Neurosurgical Subspecialty Bedside Guide Improves Nursing Confidence

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Familiarity with a neurosurgical nursing guide had a positive impact on the confidence of medical-surgical nurses caring for neurosurgical patients and helped improve patient care skills.

The VA Portland Healthcare System (VAPHCS) is a 277-bed facility that serves more than 85,000 inpatient and 880,000 outpatient visits each year from veterans in Oregon and southwestern Washington. The VAPHCS consists of a main tertiary care VAMC with an acute medical and surgical facility that includes 30 beds serving qualifying veterans. Supported surgical specialties include urology, general surgery, vascular surgery, otolaryngology, orthopedic surgery, ophthalmology, cardiothoracic surgery, transplant surgery, and neurological surgery. Neurosurgical patients account for about 12% to 13% of annual surgical patients. The VAPHCS also is partnered with Oregon Health & Science University in the training of health care professionals, such as physicians and nurses.

The expectation at the VAPHCS is that medical-surgical nurses care for 4 to 5 concurrent patients, often from different surgical services. Caring for patients with different medical and surgical needs, variable ambulatory, swallowing, and elimination functions, and different physician teams can become confusing; even within a single surgical service, postoperative care due to procedure complexity, specificity of care orders, and the real possibility of medical catastrophe can seem overwhelming. Therefore, subspecialty nursing training poses a challenge that requires technical in-service and didactic education and allocation of resources.

Despite systems level subspecialty nursing training, medical emergencies identified at the bedside can be mismanaged.1 Errors in care can be due to an incomplete knowledge of the patient’s procedure and misunderstanding of positioning and activity limitations.

To encourage medical-surgical nurses to become more engaged and confident in subspecialty patient care, the authors developed a bedside neurosurgical nursing guide to allow for independent procedure related education. The comprehensive guide summarized the clinical course for postoperative neurosurgical patients undergoing cranial and spinal surgeries. This guide included appropriate surgery-related images, procedure overviews, management decisions, potential postoperative complications, and wound care directions. The guide was distributed to medical-surgical nurses caring for neurosurgical patients. The authors hypothesized that the guide would enable nurses to better predict adverse outcomes and respond appropriately and would improve confidence in patient care.

Methods

For educational purposes, a bedside neurosurgical nursing guide (text and graphics) was created for the 16 surgical subspecialty nurses at the VAPHCS. The guide detailed the most common cranial and spinal neurosurgical procedures performed at VAPHCS and was written based on a typical postoperative course for each procedure by the chief neurosurgery resident at VAPHCS with collaboration from the attending neurosurgeons (Figure).

A quality improvement (QI) project was undertaken to assess nursing confidence with neurosurgical patients’ care pre- and postfamiliarity with the bedside neurosurgical nursing guide. A literature search revealed no validated survey assessing nursing confidence, so one was created using the Likert scale. Specifically, an anonymous 6-question survey was completed by all 16 surgical nurses prior to familiarization with the guide. Responses were recorded as scores of 1 to 5 for questions 1, 3, and 4, with a response of 1 indicative of no comfort or confidence and a response of 5 indicative of the highest level of comfort or confidence. Responses were recorded as either true or false for questions 2 and 6, and never, occasionally, frequently, or always for question 5.

The guide was made available to nurses for 6 months without encouragement to use it. After 6 months, a 3-week period of familiarization with and education about the availability of the guide was instituted at morning nursing reports; the total availability of the guide to nursing staff was 6 months 3 weeks. After this period the same 6-question survey was distributed, and data were collected.

Survey responses were categorized into 2 groups. Responses to questions 1, 3, and 4 were categorized as group 1, and responses to questions 4 and 5 were categorized as group 2. Responses (never and occasionally) to question 5, were categorized as group 1 and responses (frequently and always) as group 2 (Table). Responses to questions 2 and 6 were grouped 1 for true and 2 for false. Nurses participating in this study ranged in age from 22 to 57 years, education level ranged from registered nurse to a bachelor of science in nursing, and years of experience ranged from < 1 year to 27 years.

Statistics were calculated using chi-square analysis with Yates correction online calculator. For the chi-square analysis, the prefamiliarization data for groups 1 and 2 were used as the expected values, and the postfamiliarization data were used for the observed values. In this manner, differences were discerned between the before and after questionnaire responses. The VAPHCS institutional review board determined that the study was not human research and exempt from review.

 

 

Findings

Anonymous survey responses were collected from all 16 surgical subspecialty nurses both prior and after familiarization with the nursing guide.The response rate was 100% with only a few incomplete responses excluded from the analysis. Three questions in the prefamiliarization questionnaire had no appropriate response, and 1 question in the postfamiliarization survey had no appropriate response.

Improvement was statistically significant in responses for questions 1, 3, 5, and 6 (P = .026, .008, .004, and .033, respectively). No significant differences were found for questions 2 and 4 (P = .974 and .116, respectively). It is possible that there was no significant difference in question 2 because prefamiliarization responses were already favorable. Even if nurses did not feel comfortable taking care of neurosurgical patients (as assessed in question 1), they noted confidence improvement by working on the ward and through informal assimilation of knowledge and skill, which would have accumulated naturally over 1 year.

Prior to familiarization with the guide, 7 nurses did not feel confident in assessing the need to contact a physician (question 4). After familiarization with the nursing guide, favorable responses increased from 9 to 14 nurses. Results trended toward but did not reach statistical significance, likely due to the small sample size.

Ultimately, in the 16 surgical subspecialty nurses surveyed, familiarization with the nursing guide was shown to improve comfort in taking care of neurosurgical patients and increase confidence in patient care skills. At the end of the QI project (6 months, 3 weeks), all nurses knew where to locate the bedside neurosurgical nursing guide and were familiar with it and its use. The guide remains accessible to the medical-surgical nurses and continues to be used.

Discussion

Nursing confidence has an undervalued effect on patient care.2 Confidence, or a belief in one’s own ability, varies directly with competence. Systematic quantification of nursing competence has been extensively studied using self-report questionnaires and clinical simulations.2,3 Competency can be quantified and normalized using formal assessment; however, confidence is somewhat intangible. Nursing confidence is a situation-dependent subjective feeling of security and is derived from an internalized assessment of skills that are commensurate with patient needs. Nursing confidence is further influenced by an intuited value within the care team, adequate knowledge of the patient’s condition, and procedures and protocols.4

A similar but less specific definition deconstructs nursing confidence as “significance of a professional network of coworkers” and the “importance of confirmation of professional role and competence.”5 The professional network of coworkers is invaluable as it underlies the essence of patient-centered care. The adaptive leadership framework is integral to the modern delivery of patient care, and via this framework frontline clinical staff, including nurses, are empowered.6,7

The second portion of Haavardsholm and Nåden’s definition, “importance of confirmation of professional role and competence” describes the association of the most easily augmented correlate of confidence: competency.5 Nursing competency is supplemented continuously with in-service training and recertification processes; however, despite this, demands placed on nurses can be technologically advanced and extremely varied. Nursing competency is known to directly correlate with increasing education, as nurses holding a master’s degree have been shown to outperform those with a bachelor of nursing degree.3

Increased formal education as well as increased work experience (> 5 years) are correlated with increased critical thinking ability.4,5 The critical thinking ability of health care providers can be fortified by clinical simulation, which leads to statistically significant improvement in clinical competency.2,3

A literature review of Medline and the National Library of Medicine PubMed online databases for search terms (nurs*, confidence, bedside, guide) was performed but did not result in original research assessing nurse confidence related to bedside guides. In this population, nurses were anonymously compared against their own historical data obviating any effect of education or experience on survey measures.

 

 

Nursing Self-Confidence

Evidence suggests that nursing confidence is a complex manifestation of the security felt within the care team and the comfort of one’s own professional abilities.4 Patients’ trust in the team caring for them is based on the confidence exuded by the team.8 In this way, nursing confidence can affect the patient-care team profoundly. Value is maximized when a nurse’s self-confidence engenders patient confidence and trust. Due to the varied patient load and complexity of subspecialty nursing care, it is hypothesized that bedside manuals/guidelines can be used to educate the subspecialty nurses on specific patient-related issues.

Nursing practice competence and confidence is vital to providing care for patients with complex postsurgical health care needs. Patient safety and outcome are paramount. This can be intimidating for newly qualified surgical subspecialty nurses who have not yet had experience with or adequate exposure to patients with complex postsurgical needs. Surgical nursing continuing education places an emphasis on adaptation to ever-changing specialized surgical procedures and postoperative patient care. Nevertheless, it is difficult for surgical subspecialty nurses to learn and retain all the possible complexities of individual cases and to confidently, appropriately, and safely care for patients especially when adverse events arise.

Recognizing that leadership is personal and not dependent on hierarchy, surgical subspecialty nurses may be better suited to specific bedside training and counseling.6,9 A key factor influencing nursing confidence is communication and collaboration with physicians.9 The role of the physician at VA medical facilities is no longer to be a commanding figure with complete medical autonomy; rather, a unified team of specialized practitioners collaboratively facilitate and deliver patient care.

There is no specific research detailing the use of bedside nursing guides in caring for postoperative patients. However, at VAPHCS, nurses created supplemental material regarding postoperative acute care of vascular surgery patients, which was found to be subjectively helpful in elevating nursing confidence. To the authors’ knowledge, no such supplemental information/guide exists for other specialty surgical services.

The surgical nursing guide created here detailed visuals of many common neurosurgical procedures performed at VAPHCS and included a prioritized checklist, which the 16 surgical subspecialty nurses could reference postoperatively. The authors hypothesized that this would enhance the nurses’ ability to efficiently manage specific situations while bridging communication gaps between surgical teams and nurses. The survey results agree with previous reports that suggested that the application of an adaptive leadership framework would empower nurses to deliver excellent patient-centered care, care that can be augmented with subspecialty nursing guides.7,10

Based on these results the authors propose that subspecialty surgical services consider use of a practical nursing guide for all surgical subspecialty nurses to reference, improve familiarity with procedures, and provide guidance to manage adverse events. Since implementing this reader-friendly paradigm within neurosurgical care, a nurse driven expansion has now included other subspecialty services at the VAPHCS with success.

Limitations

Survey responses have inherent bias and sampling error rates. The sample size for this survey was small. Data were grouped for data analysis. Competency and patient outcomes were not measured.

 

 

Future Directions

Despite specific surgical specialty postoperative patient care training, an overall lack of confidence can persist. A physician-created neurosurgical nursing guide that detailed the most common neurosurgical procedures, expected postoperative care, and potential emergencies was shown to improve nursing confidence. Collaborative (physician and nursing leaders) QI projects, such as described here; development of specific surgical specialty initiatives designed to improve confidence and quality; and nurse-physician communication and teamwork could lead to improved patient satisfaction and outcome.

The costs associated with developing and using bedside nursing guides are relatively low, and efficiency can be considered high. Competency improvement could be measured by creating a specialty-specific case scenario question bank. Effects on patient satisfaction and outcome could be measured by a patient satisfaction survey. Improvements in beside catastrophe management could be prospectively tracked; for example, rates of mismanagement of mobility status, emergent transfers to the intensive care unit, or poor wound care could be compared pre- and postfamiliarization with a subspecialty guide.

Conclusion

Familiarization with the VAPHCS neurosurgical nursing guide had a positive impact on the confidence of medical-surgical nurses caring for neurosurgical patients. Medical-surgical nurses were more comfortable taking care of neurosurgical patients; they felt the guide helped improve skills and noted improved knowledge regarding involvement of physician oversight. Although objective parameters were not assessed, improvement in nursing confidence in general leads to improved overall nurse-physician communication and patient management. A further study might target objective parameters associated with guide usage, such as changes in the number of emergencies or calls to physicians regarding management.

Acknowledgments
The authors thank Andy Rekito, MS, for illustrative assistance.

References

1. Pusateri ME, Prior MM, Kiely SC. The role of the non-ICU staff nurse on a medical emergency team: perceptions and understanding. Am J Nurs. 2011;111(5):22-29, quiz 30-31.

2. Bambini D, Washburn J, Perkins R. Outcomes of clinical simulation for novice nursing students: communication, confidence, clinical judgment. Nurs Educ Perspect. 2009;30(2):79-82.

3. Chang MJ, Chang YJ, Kuo SH, Yang YH, Chou FH. Relationships between critical thinking ability and nursing competence in clinical nurses. J Clin Nurs. 2011;20(21-22):3224-3232.

4. Perry P. Concept analysis: confidence/self-confidence. Nurs Forum. 2011;46(4):218-230.

5. Haavardsholm I, Nåden D. The concept of confidence—the nurse’s perception. Eur J Cancer Care (Engl). 2009;18(5):483-491.

6. Bailey DE Jr, Docherty SL, Adams JA, et al. Studying the clinical encounter with the Adaptive Leadership framework. J Healthc Leadersh. 2012;2012(4):83-91.

7. Hall C, McCutcheon H, Deuter K, Matricciani L. Evaluating and improving a model of nursing care delivery: a process of partnership. Collegian. 2012;19(4):203-210.

8. Williams AM, Irurita VF. Therapeutic and non-therapeutic interpersonal interactions: the patient’s perspective. J Clin Nurs. 2004;13(7):806-815.

9. Carryer J. Collaboration between doctors and nurses. J Prim Health Care. 2011;3(1):77-79.

10. Chadwick MM. Creating order out of chaos: a leadership approach. AORN J. 2010;91(1):154-170.

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Dr. Raskin is a pediatric neurological surgery fellow; Dr. Liu is a neurological surgery fellow; Dr. McCartney is an associate professor and researcher; Dr. Ross is an associate professor; Dr. Raslan is an assistant professor; all in the department of Neurological Surgery at Oregon Health & Science University. Ms. Hannam is a nurse coordinator at the Medical-Surgical Nursing, Inpatient and Emergency Services Department at VA Portland Health Care System; all in Portland, Oregon.

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The authors report no actual or potential conflicts of interest with regard to this article.

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The opinions expressed herein are those of the authors and do not necessarily reflect those of Federal Practitioner, Frontline Medical Communications Inc., the U.S. Government, or any of its agencies.

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Dr. Raskin is a pediatric neurological surgery fellow; Dr. Liu is a neurological surgery fellow; Dr. McCartney is an associate professor and researcher; Dr. Ross is an associate professor; Dr. Raslan is an assistant professor; all in the department of Neurological Surgery at Oregon Health & Science University. Ms. Hannam is a nurse coordinator at the Medical-Surgical Nursing, Inpatient and Emergency Services Department at VA Portland Health Care System; all in Portland, Oregon.

Author disclosures
The authors report no actual or potential conflicts of interest with regard to this article.

Disclaimer
The opinions expressed herein are those of the authors and do not necessarily reflect those of Federal Practitioner, Frontline Medical Communications Inc., the U.S. Government, or any of its agencies.

Author and Disclosure Information

Dr. Raskin is a pediatric neurological surgery fellow; Dr. Liu is a neurological surgery fellow; Dr. McCartney is an associate professor and researcher; Dr. Ross is an associate professor; Dr. Raslan is an assistant professor; all in the department of Neurological Surgery at Oregon Health & Science University. Ms. Hannam is a nurse coordinator at the Medical-Surgical Nursing, Inpatient and Emergency Services Department at VA Portland Health Care System; all in Portland, Oregon.

Author disclosures
The authors report no actual or potential conflicts of interest with regard to this article.

Disclaimer
The opinions expressed herein are those of the authors and do not necessarily reflect those of Federal Practitioner, Frontline Medical Communications Inc., the U.S. Government, or any of its agencies.

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Related Articles
Familiarity with a neurosurgical nursing guide had a positive impact on the confidence of medical-surgical nurses caring for neurosurgical patients and helped improve patient care skills.
Familiarity with a neurosurgical nursing guide had a positive impact on the confidence of medical-surgical nurses caring for neurosurgical patients and helped improve patient care skills.

The VA Portland Healthcare System (VAPHCS) is a 277-bed facility that serves more than 85,000 inpatient and 880,000 outpatient visits each year from veterans in Oregon and southwestern Washington. The VAPHCS consists of a main tertiary care VAMC with an acute medical and surgical facility that includes 30 beds serving qualifying veterans. Supported surgical specialties include urology, general surgery, vascular surgery, otolaryngology, orthopedic surgery, ophthalmology, cardiothoracic surgery, transplant surgery, and neurological surgery. Neurosurgical patients account for about 12% to 13% of annual surgical patients. The VAPHCS also is partnered with Oregon Health & Science University in the training of health care professionals, such as physicians and nurses.

The expectation at the VAPHCS is that medical-surgical nurses care for 4 to 5 concurrent patients, often from different surgical services. Caring for patients with different medical and surgical needs, variable ambulatory, swallowing, and elimination functions, and different physician teams can become confusing; even within a single surgical service, postoperative care due to procedure complexity, specificity of care orders, and the real possibility of medical catastrophe can seem overwhelming. Therefore, subspecialty nursing training poses a challenge that requires technical in-service and didactic education and allocation of resources.

Despite systems level subspecialty nursing training, medical emergencies identified at the bedside can be mismanaged.1 Errors in care can be due to an incomplete knowledge of the patient’s procedure and misunderstanding of positioning and activity limitations.

To encourage medical-surgical nurses to become more engaged and confident in subspecialty patient care, the authors developed a bedside neurosurgical nursing guide to allow for independent procedure related education. The comprehensive guide summarized the clinical course for postoperative neurosurgical patients undergoing cranial and spinal surgeries. This guide included appropriate surgery-related images, procedure overviews, management decisions, potential postoperative complications, and wound care directions. The guide was distributed to medical-surgical nurses caring for neurosurgical patients. The authors hypothesized that the guide would enable nurses to better predict adverse outcomes and respond appropriately and would improve confidence in patient care.

Methods

For educational purposes, a bedside neurosurgical nursing guide (text and graphics) was created for the 16 surgical subspecialty nurses at the VAPHCS. The guide detailed the most common cranial and spinal neurosurgical procedures performed at VAPHCS and was written based on a typical postoperative course for each procedure by the chief neurosurgery resident at VAPHCS with collaboration from the attending neurosurgeons (Figure).

A quality improvement (QI) project was undertaken to assess nursing confidence with neurosurgical patients’ care pre- and postfamiliarity with the bedside neurosurgical nursing guide. A literature search revealed no validated survey assessing nursing confidence, so one was created using the Likert scale. Specifically, an anonymous 6-question survey was completed by all 16 surgical nurses prior to familiarization with the guide. Responses were recorded as scores of 1 to 5 for questions 1, 3, and 4, with a response of 1 indicative of no comfort or confidence and a response of 5 indicative of the highest level of comfort or confidence. Responses were recorded as either true or false for questions 2 and 6, and never, occasionally, frequently, or always for question 5.

The guide was made available to nurses for 6 months without encouragement to use it. After 6 months, a 3-week period of familiarization with and education about the availability of the guide was instituted at morning nursing reports; the total availability of the guide to nursing staff was 6 months 3 weeks. After this period the same 6-question survey was distributed, and data were collected.

Survey responses were categorized into 2 groups. Responses to questions 1, 3, and 4 were categorized as group 1, and responses to questions 4 and 5 were categorized as group 2. Responses (never and occasionally) to question 5, were categorized as group 1 and responses (frequently and always) as group 2 (Table). Responses to questions 2 and 6 were grouped 1 for true and 2 for false. Nurses participating in this study ranged in age from 22 to 57 years, education level ranged from registered nurse to a bachelor of science in nursing, and years of experience ranged from < 1 year to 27 years.

Statistics were calculated using chi-square analysis with Yates correction online calculator. For the chi-square analysis, the prefamiliarization data for groups 1 and 2 were used as the expected values, and the postfamiliarization data were used for the observed values. In this manner, differences were discerned between the before and after questionnaire responses. The VAPHCS institutional review board determined that the study was not human research and exempt from review.

 

 

Findings

Anonymous survey responses were collected from all 16 surgical subspecialty nurses both prior and after familiarization with the nursing guide.The response rate was 100% with only a few incomplete responses excluded from the analysis. Three questions in the prefamiliarization questionnaire had no appropriate response, and 1 question in the postfamiliarization survey had no appropriate response.

Improvement was statistically significant in responses for questions 1, 3, 5, and 6 (P = .026, .008, .004, and .033, respectively). No significant differences were found for questions 2 and 4 (P = .974 and .116, respectively). It is possible that there was no significant difference in question 2 because prefamiliarization responses were already favorable. Even if nurses did not feel comfortable taking care of neurosurgical patients (as assessed in question 1), they noted confidence improvement by working on the ward and through informal assimilation of knowledge and skill, which would have accumulated naturally over 1 year.

Prior to familiarization with the guide, 7 nurses did not feel confident in assessing the need to contact a physician (question 4). After familiarization with the nursing guide, favorable responses increased from 9 to 14 nurses. Results trended toward but did not reach statistical significance, likely due to the small sample size.

Ultimately, in the 16 surgical subspecialty nurses surveyed, familiarization with the nursing guide was shown to improve comfort in taking care of neurosurgical patients and increase confidence in patient care skills. At the end of the QI project (6 months, 3 weeks), all nurses knew where to locate the bedside neurosurgical nursing guide and were familiar with it and its use. The guide remains accessible to the medical-surgical nurses and continues to be used.

Discussion

Nursing confidence has an undervalued effect on patient care.2 Confidence, or a belief in one’s own ability, varies directly with competence. Systematic quantification of nursing competence has been extensively studied using self-report questionnaires and clinical simulations.2,3 Competency can be quantified and normalized using formal assessment; however, confidence is somewhat intangible. Nursing confidence is a situation-dependent subjective feeling of security and is derived from an internalized assessment of skills that are commensurate with patient needs. Nursing confidence is further influenced by an intuited value within the care team, adequate knowledge of the patient’s condition, and procedures and protocols.4

A similar but less specific definition deconstructs nursing confidence as “significance of a professional network of coworkers” and the “importance of confirmation of professional role and competence.”5 The professional network of coworkers is invaluable as it underlies the essence of patient-centered care. The adaptive leadership framework is integral to the modern delivery of patient care, and via this framework frontline clinical staff, including nurses, are empowered.6,7

The second portion of Haavardsholm and Nåden’s definition, “importance of confirmation of professional role and competence” describes the association of the most easily augmented correlate of confidence: competency.5 Nursing competency is supplemented continuously with in-service training and recertification processes; however, despite this, demands placed on nurses can be technologically advanced and extremely varied. Nursing competency is known to directly correlate with increasing education, as nurses holding a master’s degree have been shown to outperform those with a bachelor of nursing degree.3

Increased formal education as well as increased work experience (> 5 years) are correlated with increased critical thinking ability.4,5 The critical thinking ability of health care providers can be fortified by clinical simulation, which leads to statistically significant improvement in clinical competency.2,3

A literature review of Medline and the National Library of Medicine PubMed online databases for search terms (nurs*, confidence, bedside, guide) was performed but did not result in original research assessing nurse confidence related to bedside guides. In this population, nurses were anonymously compared against their own historical data obviating any effect of education or experience on survey measures.

 

 

Nursing Self-Confidence

Evidence suggests that nursing confidence is a complex manifestation of the security felt within the care team and the comfort of one’s own professional abilities.4 Patients’ trust in the team caring for them is based on the confidence exuded by the team.8 In this way, nursing confidence can affect the patient-care team profoundly. Value is maximized when a nurse’s self-confidence engenders patient confidence and trust. Due to the varied patient load and complexity of subspecialty nursing care, it is hypothesized that bedside manuals/guidelines can be used to educate the subspecialty nurses on specific patient-related issues.

Nursing practice competence and confidence is vital to providing care for patients with complex postsurgical health care needs. Patient safety and outcome are paramount. This can be intimidating for newly qualified surgical subspecialty nurses who have not yet had experience with or adequate exposure to patients with complex postsurgical needs. Surgical nursing continuing education places an emphasis on adaptation to ever-changing specialized surgical procedures and postoperative patient care. Nevertheless, it is difficult for surgical subspecialty nurses to learn and retain all the possible complexities of individual cases and to confidently, appropriately, and safely care for patients especially when adverse events arise.

Recognizing that leadership is personal and not dependent on hierarchy, surgical subspecialty nurses may be better suited to specific bedside training and counseling.6,9 A key factor influencing nursing confidence is communication and collaboration with physicians.9 The role of the physician at VA medical facilities is no longer to be a commanding figure with complete medical autonomy; rather, a unified team of specialized practitioners collaboratively facilitate and deliver patient care.

There is no specific research detailing the use of bedside nursing guides in caring for postoperative patients. However, at VAPHCS, nurses created supplemental material regarding postoperative acute care of vascular surgery patients, which was found to be subjectively helpful in elevating nursing confidence. To the authors’ knowledge, no such supplemental information/guide exists for other specialty surgical services.

The surgical nursing guide created here detailed visuals of many common neurosurgical procedures performed at VAPHCS and included a prioritized checklist, which the 16 surgical subspecialty nurses could reference postoperatively. The authors hypothesized that this would enhance the nurses’ ability to efficiently manage specific situations while bridging communication gaps between surgical teams and nurses. The survey results agree with previous reports that suggested that the application of an adaptive leadership framework would empower nurses to deliver excellent patient-centered care, care that can be augmented with subspecialty nursing guides.7,10

Based on these results the authors propose that subspecialty surgical services consider use of a practical nursing guide for all surgical subspecialty nurses to reference, improve familiarity with procedures, and provide guidance to manage adverse events. Since implementing this reader-friendly paradigm within neurosurgical care, a nurse driven expansion has now included other subspecialty services at the VAPHCS with success.

Limitations

Survey responses have inherent bias and sampling error rates. The sample size for this survey was small. Data were grouped for data analysis. Competency and patient outcomes were not measured.

 

 

Future Directions

Despite specific surgical specialty postoperative patient care training, an overall lack of confidence can persist. A physician-created neurosurgical nursing guide that detailed the most common neurosurgical procedures, expected postoperative care, and potential emergencies was shown to improve nursing confidence. Collaborative (physician and nursing leaders) QI projects, such as described here; development of specific surgical specialty initiatives designed to improve confidence and quality; and nurse-physician communication and teamwork could lead to improved patient satisfaction and outcome.

The costs associated with developing and using bedside nursing guides are relatively low, and efficiency can be considered high. Competency improvement could be measured by creating a specialty-specific case scenario question bank. Effects on patient satisfaction and outcome could be measured by a patient satisfaction survey. Improvements in beside catastrophe management could be prospectively tracked; for example, rates of mismanagement of mobility status, emergent transfers to the intensive care unit, or poor wound care could be compared pre- and postfamiliarization with a subspecialty guide.

Conclusion

Familiarization with the VAPHCS neurosurgical nursing guide had a positive impact on the confidence of medical-surgical nurses caring for neurosurgical patients. Medical-surgical nurses were more comfortable taking care of neurosurgical patients; they felt the guide helped improve skills and noted improved knowledge regarding involvement of physician oversight. Although objective parameters were not assessed, improvement in nursing confidence in general leads to improved overall nurse-physician communication and patient management. A further study might target objective parameters associated with guide usage, such as changes in the number of emergencies or calls to physicians regarding management.

Acknowledgments
The authors thank Andy Rekito, MS, for illustrative assistance.

The VA Portland Healthcare System (VAPHCS) is a 277-bed facility that serves more than 85,000 inpatient and 880,000 outpatient visits each year from veterans in Oregon and southwestern Washington. The VAPHCS consists of a main tertiary care VAMC with an acute medical and surgical facility that includes 30 beds serving qualifying veterans. Supported surgical specialties include urology, general surgery, vascular surgery, otolaryngology, orthopedic surgery, ophthalmology, cardiothoracic surgery, transplant surgery, and neurological surgery. Neurosurgical patients account for about 12% to 13% of annual surgical patients. The VAPHCS also is partnered with Oregon Health & Science University in the training of health care professionals, such as physicians and nurses.

The expectation at the VAPHCS is that medical-surgical nurses care for 4 to 5 concurrent patients, often from different surgical services. Caring for patients with different medical and surgical needs, variable ambulatory, swallowing, and elimination functions, and different physician teams can become confusing; even within a single surgical service, postoperative care due to procedure complexity, specificity of care orders, and the real possibility of medical catastrophe can seem overwhelming. Therefore, subspecialty nursing training poses a challenge that requires technical in-service and didactic education and allocation of resources.

Despite systems level subspecialty nursing training, medical emergencies identified at the bedside can be mismanaged.1 Errors in care can be due to an incomplete knowledge of the patient’s procedure and misunderstanding of positioning and activity limitations.

To encourage medical-surgical nurses to become more engaged and confident in subspecialty patient care, the authors developed a bedside neurosurgical nursing guide to allow for independent procedure related education. The comprehensive guide summarized the clinical course for postoperative neurosurgical patients undergoing cranial and spinal surgeries. This guide included appropriate surgery-related images, procedure overviews, management decisions, potential postoperative complications, and wound care directions. The guide was distributed to medical-surgical nurses caring for neurosurgical patients. The authors hypothesized that the guide would enable nurses to better predict adverse outcomes and respond appropriately and would improve confidence in patient care.

Methods

For educational purposes, a bedside neurosurgical nursing guide (text and graphics) was created for the 16 surgical subspecialty nurses at the VAPHCS. The guide detailed the most common cranial and spinal neurosurgical procedures performed at VAPHCS and was written based on a typical postoperative course for each procedure by the chief neurosurgery resident at VAPHCS with collaboration from the attending neurosurgeons (Figure).

A quality improvement (QI) project was undertaken to assess nursing confidence with neurosurgical patients’ care pre- and postfamiliarity with the bedside neurosurgical nursing guide. A literature search revealed no validated survey assessing nursing confidence, so one was created using the Likert scale. Specifically, an anonymous 6-question survey was completed by all 16 surgical nurses prior to familiarization with the guide. Responses were recorded as scores of 1 to 5 for questions 1, 3, and 4, with a response of 1 indicative of no comfort or confidence and a response of 5 indicative of the highest level of comfort or confidence. Responses were recorded as either true or false for questions 2 and 6, and never, occasionally, frequently, or always for question 5.

The guide was made available to nurses for 6 months without encouragement to use it. After 6 months, a 3-week period of familiarization with and education about the availability of the guide was instituted at morning nursing reports; the total availability of the guide to nursing staff was 6 months 3 weeks. After this period the same 6-question survey was distributed, and data were collected.

Survey responses were categorized into 2 groups. Responses to questions 1, 3, and 4 were categorized as group 1, and responses to questions 4 and 5 were categorized as group 2. Responses (never and occasionally) to question 5, were categorized as group 1 and responses (frequently and always) as group 2 (Table). Responses to questions 2 and 6 were grouped 1 for true and 2 for false. Nurses participating in this study ranged in age from 22 to 57 years, education level ranged from registered nurse to a bachelor of science in nursing, and years of experience ranged from < 1 year to 27 years.

Statistics were calculated using chi-square analysis with Yates correction online calculator. For the chi-square analysis, the prefamiliarization data for groups 1 and 2 were used as the expected values, and the postfamiliarization data were used for the observed values. In this manner, differences were discerned between the before and after questionnaire responses. The VAPHCS institutional review board determined that the study was not human research and exempt from review.

 

 

Findings

Anonymous survey responses were collected from all 16 surgical subspecialty nurses both prior and after familiarization with the nursing guide.The response rate was 100% with only a few incomplete responses excluded from the analysis. Three questions in the prefamiliarization questionnaire had no appropriate response, and 1 question in the postfamiliarization survey had no appropriate response.

Improvement was statistically significant in responses for questions 1, 3, 5, and 6 (P = .026, .008, .004, and .033, respectively). No significant differences were found for questions 2 and 4 (P = .974 and .116, respectively). It is possible that there was no significant difference in question 2 because prefamiliarization responses were already favorable. Even if nurses did not feel comfortable taking care of neurosurgical patients (as assessed in question 1), they noted confidence improvement by working on the ward and through informal assimilation of knowledge and skill, which would have accumulated naturally over 1 year.

Prior to familiarization with the guide, 7 nurses did not feel confident in assessing the need to contact a physician (question 4). After familiarization with the nursing guide, favorable responses increased from 9 to 14 nurses. Results trended toward but did not reach statistical significance, likely due to the small sample size.

Ultimately, in the 16 surgical subspecialty nurses surveyed, familiarization with the nursing guide was shown to improve comfort in taking care of neurosurgical patients and increase confidence in patient care skills. At the end of the QI project (6 months, 3 weeks), all nurses knew where to locate the bedside neurosurgical nursing guide and were familiar with it and its use. The guide remains accessible to the medical-surgical nurses and continues to be used.

Discussion

Nursing confidence has an undervalued effect on patient care.2 Confidence, or a belief in one’s own ability, varies directly with competence. Systematic quantification of nursing competence has been extensively studied using self-report questionnaires and clinical simulations.2,3 Competency can be quantified and normalized using formal assessment; however, confidence is somewhat intangible. Nursing confidence is a situation-dependent subjective feeling of security and is derived from an internalized assessment of skills that are commensurate with patient needs. Nursing confidence is further influenced by an intuited value within the care team, adequate knowledge of the patient’s condition, and procedures and protocols.4

A similar but less specific definition deconstructs nursing confidence as “significance of a professional network of coworkers” and the “importance of confirmation of professional role and competence.”5 The professional network of coworkers is invaluable as it underlies the essence of patient-centered care. The adaptive leadership framework is integral to the modern delivery of patient care, and via this framework frontline clinical staff, including nurses, are empowered.6,7

The second portion of Haavardsholm and Nåden’s definition, “importance of confirmation of professional role and competence” describes the association of the most easily augmented correlate of confidence: competency.5 Nursing competency is supplemented continuously with in-service training and recertification processes; however, despite this, demands placed on nurses can be technologically advanced and extremely varied. Nursing competency is known to directly correlate with increasing education, as nurses holding a master’s degree have been shown to outperform those with a bachelor of nursing degree.3

Increased formal education as well as increased work experience (> 5 years) are correlated with increased critical thinking ability.4,5 The critical thinking ability of health care providers can be fortified by clinical simulation, which leads to statistically significant improvement in clinical competency.2,3

A literature review of Medline and the National Library of Medicine PubMed online databases for search terms (nurs*, confidence, bedside, guide) was performed but did not result in original research assessing nurse confidence related to bedside guides. In this population, nurses were anonymously compared against their own historical data obviating any effect of education or experience on survey measures.

 

 

Nursing Self-Confidence

Evidence suggests that nursing confidence is a complex manifestation of the security felt within the care team and the comfort of one’s own professional abilities.4 Patients’ trust in the team caring for them is based on the confidence exuded by the team.8 In this way, nursing confidence can affect the patient-care team profoundly. Value is maximized when a nurse’s self-confidence engenders patient confidence and trust. Due to the varied patient load and complexity of subspecialty nursing care, it is hypothesized that bedside manuals/guidelines can be used to educate the subspecialty nurses on specific patient-related issues.

Nursing practice competence and confidence is vital to providing care for patients with complex postsurgical health care needs. Patient safety and outcome are paramount. This can be intimidating for newly qualified surgical subspecialty nurses who have not yet had experience with or adequate exposure to patients with complex postsurgical needs. Surgical nursing continuing education places an emphasis on adaptation to ever-changing specialized surgical procedures and postoperative patient care. Nevertheless, it is difficult for surgical subspecialty nurses to learn and retain all the possible complexities of individual cases and to confidently, appropriately, and safely care for patients especially when adverse events arise.

Recognizing that leadership is personal and not dependent on hierarchy, surgical subspecialty nurses may be better suited to specific bedside training and counseling.6,9 A key factor influencing nursing confidence is communication and collaboration with physicians.9 The role of the physician at VA medical facilities is no longer to be a commanding figure with complete medical autonomy; rather, a unified team of specialized practitioners collaboratively facilitate and deliver patient care.

There is no specific research detailing the use of bedside nursing guides in caring for postoperative patients. However, at VAPHCS, nurses created supplemental material regarding postoperative acute care of vascular surgery patients, which was found to be subjectively helpful in elevating nursing confidence. To the authors’ knowledge, no such supplemental information/guide exists for other specialty surgical services.

The surgical nursing guide created here detailed visuals of many common neurosurgical procedures performed at VAPHCS and included a prioritized checklist, which the 16 surgical subspecialty nurses could reference postoperatively. The authors hypothesized that this would enhance the nurses’ ability to efficiently manage specific situations while bridging communication gaps between surgical teams and nurses. The survey results agree with previous reports that suggested that the application of an adaptive leadership framework would empower nurses to deliver excellent patient-centered care, care that can be augmented with subspecialty nursing guides.7,10

Based on these results the authors propose that subspecialty surgical services consider use of a practical nursing guide for all surgical subspecialty nurses to reference, improve familiarity with procedures, and provide guidance to manage adverse events. Since implementing this reader-friendly paradigm within neurosurgical care, a nurse driven expansion has now included other subspecialty services at the VAPHCS with success.

Limitations

Survey responses have inherent bias and sampling error rates. The sample size for this survey was small. Data were grouped for data analysis. Competency and patient outcomes were not measured.

 

 

Future Directions

Despite specific surgical specialty postoperative patient care training, an overall lack of confidence can persist. A physician-created neurosurgical nursing guide that detailed the most common neurosurgical procedures, expected postoperative care, and potential emergencies was shown to improve nursing confidence. Collaborative (physician and nursing leaders) QI projects, such as described here; development of specific surgical specialty initiatives designed to improve confidence and quality; and nurse-physician communication and teamwork could lead to improved patient satisfaction and outcome.

The costs associated with developing and using bedside nursing guides are relatively low, and efficiency can be considered high. Competency improvement could be measured by creating a specialty-specific case scenario question bank. Effects on patient satisfaction and outcome could be measured by a patient satisfaction survey. Improvements in beside catastrophe management could be prospectively tracked; for example, rates of mismanagement of mobility status, emergent transfers to the intensive care unit, or poor wound care could be compared pre- and postfamiliarization with a subspecialty guide.

Conclusion

Familiarization with the VAPHCS neurosurgical nursing guide had a positive impact on the confidence of medical-surgical nurses caring for neurosurgical patients. Medical-surgical nurses were more comfortable taking care of neurosurgical patients; they felt the guide helped improve skills and noted improved knowledge regarding involvement of physician oversight. Although objective parameters were not assessed, improvement in nursing confidence in general leads to improved overall nurse-physician communication and patient management. A further study might target objective parameters associated with guide usage, such as changes in the number of emergencies or calls to physicians regarding management.

Acknowledgments
The authors thank Andy Rekito, MS, for illustrative assistance.

References

1. Pusateri ME, Prior MM, Kiely SC. The role of the non-ICU staff nurse on a medical emergency team: perceptions and understanding. Am J Nurs. 2011;111(5):22-29, quiz 30-31.

2. Bambini D, Washburn J, Perkins R. Outcomes of clinical simulation for novice nursing students: communication, confidence, clinical judgment. Nurs Educ Perspect. 2009;30(2):79-82.

3. Chang MJ, Chang YJ, Kuo SH, Yang YH, Chou FH. Relationships between critical thinking ability and nursing competence in clinical nurses. J Clin Nurs. 2011;20(21-22):3224-3232.

4. Perry P. Concept analysis: confidence/self-confidence. Nurs Forum. 2011;46(4):218-230.

5. Haavardsholm I, Nåden D. The concept of confidence—the nurse’s perception. Eur J Cancer Care (Engl). 2009;18(5):483-491.

6. Bailey DE Jr, Docherty SL, Adams JA, et al. Studying the clinical encounter with the Adaptive Leadership framework. J Healthc Leadersh. 2012;2012(4):83-91.

7. Hall C, McCutcheon H, Deuter K, Matricciani L. Evaluating and improving a model of nursing care delivery: a process of partnership. Collegian. 2012;19(4):203-210.

8. Williams AM, Irurita VF. Therapeutic and non-therapeutic interpersonal interactions: the patient’s perspective. J Clin Nurs. 2004;13(7):806-815.

9. Carryer J. Collaboration between doctors and nurses. J Prim Health Care. 2011;3(1):77-79.

10. Chadwick MM. Creating order out of chaos: a leadership approach. AORN J. 2010;91(1):154-170.

References

1. Pusateri ME, Prior MM, Kiely SC. The role of the non-ICU staff nurse on a medical emergency team: perceptions and understanding. Am J Nurs. 2011;111(5):22-29, quiz 30-31.

2. Bambini D, Washburn J, Perkins R. Outcomes of clinical simulation for novice nursing students: communication, confidence, clinical judgment. Nurs Educ Perspect. 2009;30(2):79-82.

3. Chang MJ, Chang YJ, Kuo SH, Yang YH, Chou FH. Relationships between critical thinking ability and nursing competence in clinical nurses. J Clin Nurs. 2011;20(21-22):3224-3232.

4. Perry P. Concept analysis: confidence/self-confidence. Nurs Forum. 2011;46(4):218-230.

5. Haavardsholm I, Nåden D. The concept of confidence—the nurse’s perception. Eur J Cancer Care (Engl). 2009;18(5):483-491.

6. Bailey DE Jr, Docherty SL, Adams JA, et al. Studying the clinical encounter with the Adaptive Leadership framework. J Healthc Leadersh. 2012;2012(4):83-91.

7. Hall C, McCutcheon H, Deuter K, Matricciani L. Evaluating and improving a model of nursing care delivery: a process of partnership. Collegian. 2012;19(4):203-210.

8. Williams AM, Irurita VF. Therapeutic and non-therapeutic interpersonal interactions: the patient’s perspective. J Clin Nurs. 2004;13(7):806-815.

9. Carryer J. Collaboration between doctors and nurses. J Prim Health Care. 2011;3(1):77-79.

10. Chadwick MM. Creating order out of chaos: a leadership approach. AORN J. 2010;91(1):154-170.

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CAR met primary endpoint at interim analysis in DLBCL

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CAR met primary endpoint at interim analysis in DLBCL

 

 

 

Attendees at the

2016 ASH Annual Meeting

 

SAN DIEGO—The chimeric antigen receptor (CAR) T-cell therapy KTE-C19 has met its primary endpoint at the pre-specified interim analysis of the phase 2 ZUMA-1 trial in diffuse large B-cell lymphoma (DLBCL), according to data presented at the 2016 ASH Annual Meeting.

 

DLBCL patients had an overall response rate (ORR) of 76% and a complete response (CR) rate of 47% (P<0.0001) after 3 months or more of follow-up. And most responses were evident by day 30, the researchers report.

 

ZUMA-1 is the first multicenter trial of an anti-CD19 CAR T-cell therapy in refractory, aggressive non-Hodgkin lymphoma (NHL).

 

A second NHL cohort of primary mediastinal B-cell lymphoma or transformed follicular lymphoma (PMBCL/TFL) patients were also treated. Together, the cohorts achieved an ORR of 79% and a CR rate of 52%.

 

Sattva Neelapu, MD, of The University of Texas MD Anderson Cancer Center in Houston, Texas, presented the results as a late-breaking abstract (LBA-6*).

 

Detailed results of the PMBCL/TFL cohort were presented separately (abstract 998) at the meeting.

 

Earlier data from the phase 2 study have been reported in Hematology Times.

 

Phase 2 interim analysis

 

The study enrolled 111 patients, all of whom underwent leukapheresis. Seven of these patients were not treated, 5 due to serious adverse events (SAEs), 1 due to unavailable product, and 2 due to non-measurable disease.

 

“Importantly, there was no bridging therapy allowed on the study,” Dr Neelapu pointed out.

 

Patients then received a conditioning regimen of cyclophosphamide (500 mg/m2) and fludarabine (30 mg/m2) for 3 days. Two patients experienced SAEs after the conditioning regimen, making it a total of 10 patients who could not be treated.

 

Two days after the conditioning regimen was completed, investigators dosed 101 patients with KTE-C19 at a target dose of 2 × 106 anti-CD19 CAR T cells/kg.

 

“The majority of patients that were enrolled on the study were treated,” Dr Neelapu emphasized. “In fact, 91% of the 111 patients enrolled were treated and received the target dose of KTE-C19.”

 

Dr Neelapu noted that the success rate for manufacturing the CAR T cells was 99%, and the average turnaround time from apheresis to delivery to the clinical site was 17 days.

 

The study called for a pre-specified interim efficacy analysis when 50 patients in cohort 1—DLBCL patients—had at least 3 months of follow-up. This occurred on August 24, 2016, and the data was analyzed as of that date.

 

The primary endpoint was ORR of P<0.0001 using an exact binomial test comparing observed ORR to a historical control assumption of 20%. Key secondary endpoints included duration of response, overall survival, safety, and levels of CAR T cells and cytokines.

 

At the time of the pre-specified interim analysis, 93 patients had at least 1 month of follow-up. Fifty-one patients with DLBCL and 11 patients with PMBCL/TFL had at least 3 months of follow-up.

 

Patient characteristics

 

Dr Neelapu reported data on 73 DLBCL patients (cohort 1) and 20 PMBCL/TFL patients (cohort 2) evaluable with at least 1 month of follow-up at the time of the presentation.

 

The median age of all 93 patients was 59 (range, 25-76), and about half were 60 years or older.

 

Two-thirds of patients in cohort 1 and three-quarters in cohort 2 were male. Sixty-six percent of cohort 1 and 40% of cohort 2 had an ECOG performance status of 1.

 

Cohort 1 had a median of 3 prior therapies (range, 1-7), and 44% had an International Prognostic Index (IPI) risk score of 3-4. Cohort 2 had a median of 4 prior therapies (range, 2-12), and 45% had an IPI risk score of 3-4.

 

 

 

Fifty-six DLBCL patients (77%) were refractory to their second or later line of therapy, and 15 (21%) had relapsed after autologous stem cell transplant.

 

Sixteen PMBCL/TFL patients (80%) were refractory to their second or later line of therapy, and 4 (20%) relapsed after autologous stem cell transplant.

 

Results

 

Dr Neelapu indicated that patients responded rapidly to treatment, and most responses were evident at the first tumor assessment.

 

At 3 months’ follow-up or longer, the ORR was 76% and the CR rate 47% for the 51 DLBCL patients in cohort 1. This was a 6-fold higher CR rate compared with historical outcomes.

 

For the 11 PMBCL/TFL patients in cohort 2, the ORR was 91% and the CR rate was 73% at 3 months or longer.

 

Both cohorts combined yielded an ORR of 79% and a CR rate of 52%.

 

The treatment effect was consistent across key covariates—refractory patients, disease stage, IPI risk score, CD4/CD8 ratio, and steroid and tocilizumab use.

 

Dr Neelapu described the case of a 62-year-old male with refractory DLBCL who had 4 prior rituximab-based therapies. He had no response to his last 3 therapies combining rituximab with GDP (gemcitabine, cisplatin, and dexamethasone), ICE (ifosfamide, carboplatin, and etoposide), or lenalidomide.

 

After KTE-C19 therapy, the patient has an ongoing CR that has lasted more than 9 months.

 

Adverse events

 

Sixty-eight DLBCL patients (93%) experienced grade 3 or higher adverse events (AEs). These included 10 patients (14%) with cytokine release syndrome (CRS) and 18 (25%) with neurologic events.

 

Eighteen PMBCL/TFL patients (90%) experienced grade 3 or higher AEs, 2 (10%) with grade 3 or higher CRS and 9 (45%) with grade 3 or higher neurologic events.

 

CRS and neurological events were generally reversible, Dr Neelapu said. All CRS events resolved except 1 in the PMBCL/TFL cohort.

 

In both cohorts combined, 38% of patients received tocilizumab, 17% received corticosteroids, and 17% received both.

 

Three neurological events were ongoing at the data cut-off—grade 1 memory impairment, grade 1 tremor, and grade 2 tremor.

 

There were no cases of cerebral edema.

 

Three patients died from causes other than progressive disease—1 DLBCL patient and 2 in the PMBCL/TFL cohort.

 

Investigators considered the DLBCL patient death (due to hemophagocytic lymphohistiocytosis) and 1 death in the PMBCL/TFL arm (due to cardiac arrest) to be treatment-related.

 

Investigators did not consider the other death in the PMBCL/TFL arm (due to pulmonary embolism) to be treatment-related.

 

The most frequent grade 3 or higher treatment-emergent AEs in both arms combined included neutropenia (63%), anemia (42%), leukopenia (40%), febrile neutropenia (29%), thrombocytopenia (26%), encephalopathy (19%), hypophosphatemia (17%), and decreased lymphocyte count (17%).

 

Peak CAR T-cell expansion occurred between 7 and 14 days and was associated with ongoing CRs and grade 3 or greater neurological events, but not with CRS.

 

AEs were managed effectively across the 22 study sites, Dr Neelapu added, and most sites had no prior CAR T-cell therapy experience.

 

Dr Neelapu noted that the ZUMA-1 results are consistent with earlier KTE-C19 trials in aggressive NHL.

 

The primary analysis for this phase 2 study is expected to occur when all treated patients have 6 months of follow-up in the first quarter of 2017.

 

The study is sponsored by Kite Pharma but is also funded, in part, by the Leukemia and Lymphoma Society Therapy Acceleration Program.

 

*Information in the abstract differs from that presented at the meeting.

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Attendees at the

2016 ASH Annual Meeting

 

SAN DIEGO—The chimeric antigen receptor (CAR) T-cell therapy KTE-C19 has met its primary endpoint at the pre-specified interim analysis of the phase 2 ZUMA-1 trial in diffuse large B-cell lymphoma (DLBCL), according to data presented at the 2016 ASH Annual Meeting.

 

DLBCL patients had an overall response rate (ORR) of 76% and a complete response (CR) rate of 47% (P<0.0001) after 3 months or more of follow-up. And most responses were evident by day 30, the researchers report.

 

ZUMA-1 is the first multicenter trial of an anti-CD19 CAR T-cell therapy in refractory, aggressive non-Hodgkin lymphoma (NHL).

 

A second NHL cohort of primary mediastinal B-cell lymphoma or transformed follicular lymphoma (PMBCL/TFL) patients were also treated. Together, the cohorts achieved an ORR of 79% and a CR rate of 52%.

 

Sattva Neelapu, MD, of The University of Texas MD Anderson Cancer Center in Houston, Texas, presented the results as a late-breaking abstract (LBA-6*).

 

Detailed results of the PMBCL/TFL cohort were presented separately (abstract 998) at the meeting.

 

Earlier data from the phase 2 study have been reported in Hematology Times.

 

Phase 2 interim analysis

 

The study enrolled 111 patients, all of whom underwent leukapheresis. Seven of these patients were not treated, 5 due to serious adverse events (SAEs), 1 due to unavailable product, and 2 due to non-measurable disease.

 

“Importantly, there was no bridging therapy allowed on the study,” Dr Neelapu pointed out.

 

Patients then received a conditioning regimen of cyclophosphamide (500 mg/m2) and fludarabine (30 mg/m2) for 3 days. Two patients experienced SAEs after the conditioning regimen, making it a total of 10 patients who could not be treated.

 

Two days after the conditioning regimen was completed, investigators dosed 101 patients with KTE-C19 at a target dose of 2 × 106 anti-CD19 CAR T cells/kg.

 

“The majority of patients that were enrolled on the study were treated,” Dr Neelapu emphasized. “In fact, 91% of the 111 patients enrolled were treated and received the target dose of KTE-C19.”

 

Dr Neelapu noted that the success rate for manufacturing the CAR T cells was 99%, and the average turnaround time from apheresis to delivery to the clinical site was 17 days.

 

The study called for a pre-specified interim efficacy analysis when 50 patients in cohort 1—DLBCL patients—had at least 3 months of follow-up. This occurred on August 24, 2016, and the data was analyzed as of that date.

 

The primary endpoint was ORR of P<0.0001 using an exact binomial test comparing observed ORR to a historical control assumption of 20%. Key secondary endpoints included duration of response, overall survival, safety, and levels of CAR T cells and cytokines.

 

At the time of the pre-specified interim analysis, 93 patients had at least 1 month of follow-up. Fifty-one patients with DLBCL and 11 patients with PMBCL/TFL had at least 3 months of follow-up.

 

Patient characteristics

 

Dr Neelapu reported data on 73 DLBCL patients (cohort 1) and 20 PMBCL/TFL patients (cohort 2) evaluable with at least 1 month of follow-up at the time of the presentation.

 

The median age of all 93 patients was 59 (range, 25-76), and about half were 60 years or older.

 

Two-thirds of patients in cohort 1 and three-quarters in cohort 2 were male. Sixty-six percent of cohort 1 and 40% of cohort 2 had an ECOG performance status of 1.

 

Cohort 1 had a median of 3 prior therapies (range, 1-7), and 44% had an International Prognostic Index (IPI) risk score of 3-4. Cohort 2 had a median of 4 prior therapies (range, 2-12), and 45% had an IPI risk score of 3-4.

 

 

 

Fifty-six DLBCL patients (77%) were refractory to their second or later line of therapy, and 15 (21%) had relapsed after autologous stem cell transplant.

 

Sixteen PMBCL/TFL patients (80%) were refractory to their second or later line of therapy, and 4 (20%) relapsed after autologous stem cell transplant.

 

Results

 

Dr Neelapu indicated that patients responded rapidly to treatment, and most responses were evident at the first tumor assessment.

 

At 3 months’ follow-up or longer, the ORR was 76% and the CR rate 47% for the 51 DLBCL patients in cohort 1. This was a 6-fold higher CR rate compared with historical outcomes.

 

For the 11 PMBCL/TFL patients in cohort 2, the ORR was 91% and the CR rate was 73% at 3 months or longer.

 

Both cohorts combined yielded an ORR of 79% and a CR rate of 52%.

 

The treatment effect was consistent across key covariates—refractory patients, disease stage, IPI risk score, CD4/CD8 ratio, and steroid and tocilizumab use.

 

Dr Neelapu described the case of a 62-year-old male with refractory DLBCL who had 4 prior rituximab-based therapies. He had no response to his last 3 therapies combining rituximab with GDP (gemcitabine, cisplatin, and dexamethasone), ICE (ifosfamide, carboplatin, and etoposide), or lenalidomide.

 

After KTE-C19 therapy, the patient has an ongoing CR that has lasted more than 9 months.

 

Adverse events

 

Sixty-eight DLBCL patients (93%) experienced grade 3 or higher adverse events (AEs). These included 10 patients (14%) with cytokine release syndrome (CRS) and 18 (25%) with neurologic events.

 

Eighteen PMBCL/TFL patients (90%) experienced grade 3 or higher AEs, 2 (10%) with grade 3 or higher CRS and 9 (45%) with grade 3 or higher neurologic events.

 

CRS and neurological events were generally reversible, Dr Neelapu said. All CRS events resolved except 1 in the PMBCL/TFL cohort.

 

In both cohorts combined, 38% of patients received tocilizumab, 17% received corticosteroids, and 17% received both.

 

Three neurological events were ongoing at the data cut-off—grade 1 memory impairment, grade 1 tremor, and grade 2 tremor.

 

There were no cases of cerebral edema.

 

Three patients died from causes other than progressive disease—1 DLBCL patient and 2 in the PMBCL/TFL cohort.

 

Investigators considered the DLBCL patient death (due to hemophagocytic lymphohistiocytosis) and 1 death in the PMBCL/TFL arm (due to cardiac arrest) to be treatment-related.

 

Investigators did not consider the other death in the PMBCL/TFL arm (due to pulmonary embolism) to be treatment-related.

 

The most frequent grade 3 or higher treatment-emergent AEs in both arms combined included neutropenia (63%), anemia (42%), leukopenia (40%), febrile neutropenia (29%), thrombocytopenia (26%), encephalopathy (19%), hypophosphatemia (17%), and decreased lymphocyte count (17%).

 

Peak CAR T-cell expansion occurred between 7 and 14 days and was associated with ongoing CRs and grade 3 or greater neurological events, but not with CRS.

 

AEs were managed effectively across the 22 study sites, Dr Neelapu added, and most sites had no prior CAR T-cell therapy experience.

 

Dr Neelapu noted that the ZUMA-1 results are consistent with earlier KTE-C19 trials in aggressive NHL.

 

The primary analysis for this phase 2 study is expected to occur when all treated patients have 6 months of follow-up in the first quarter of 2017.

 

The study is sponsored by Kite Pharma but is also funded, in part, by the Leukemia and Lymphoma Society Therapy Acceleration Program.

 

*Information in the abstract differs from that presented at the meeting.

 

 

 

Attendees at the

2016 ASH Annual Meeting

 

SAN DIEGO—The chimeric antigen receptor (CAR) T-cell therapy KTE-C19 has met its primary endpoint at the pre-specified interim analysis of the phase 2 ZUMA-1 trial in diffuse large B-cell lymphoma (DLBCL), according to data presented at the 2016 ASH Annual Meeting.

 

DLBCL patients had an overall response rate (ORR) of 76% and a complete response (CR) rate of 47% (P<0.0001) after 3 months or more of follow-up. And most responses were evident by day 30, the researchers report.

 

ZUMA-1 is the first multicenter trial of an anti-CD19 CAR T-cell therapy in refractory, aggressive non-Hodgkin lymphoma (NHL).

 

A second NHL cohort of primary mediastinal B-cell lymphoma or transformed follicular lymphoma (PMBCL/TFL) patients were also treated. Together, the cohorts achieved an ORR of 79% and a CR rate of 52%.

 

Sattva Neelapu, MD, of The University of Texas MD Anderson Cancer Center in Houston, Texas, presented the results as a late-breaking abstract (LBA-6*).

 

Detailed results of the PMBCL/TFL cohort were presented separately (abstract 998) at the meeting.

 

Earlier data from the phase 2 study have been reported in Hematology Times.

 

Phase 2 interim analysis

 

The study enrolled 111 patients, all of whom underwent leukapheresis. Seven of these patients were not treated, 5 due to serious adverse events (SAEs), 1 due to unavailable product, and 2 due to non-measurable disease.

 

“Importantly, there was no bridging therapy allowed on the study,” Dr Neelapu pointed out.

 

Patients then received a conditioning regimen of cyclophosphamide (500 mg/m2) and fludarabine (30 mg/m2) for 3 days. Two patients experienced SAEs after the conditioning regimen, making it a total of 10 patients who could not be treated.

 

Two days after the conditioning regimen was completed, investigators dosed 101 patients with KTE-C19 at a target dose of 2 × 106 anti-CD19 CAR T cells/kg.

 

“The majority of patients that were enrolled on the study were treated,” Dr Neelapu emphasized. “In fact, 91% of the 111 patients enrolled were treated and received the target dose of KTE-C19.”

 

Dr Neelapu noted that the success rate for manufacturing the CAR T cells was 99%, and the average turnaround time from apheresis to delivery to the clinical site was 17 days.

 

The study called for a pre-specified interim efficacy analysis when 50 patients in cohort 1—DLBCL patients—had at least 3 months of follow-up. This occurred on August 24, 2016, and the data was analyzed as of that date.

 

The primary endpoint was ORR of P<0.0001 using an exact binomial test comparing observed ORR to a historical control assumption of 20%. Key secondary endpoints included duration of response, overall survival, safety, and levels of CAR T cells and cytokines.

 

At the time of the pre-specified interim analysis, 93 patients had at least 1 month of follow-up. Fifty-one patients with DLBCL and 11 patients with PMBCL/TFL had at least 3 months of follow-up.

 

Patient characteristics

 

Dr Neelapu reported data on 73 DLBCL patients (cohort 1) and 20 PMBCL/TFL patients (cohort 2) evaluable with at least 1 month of follow-up at the time of the presentation.

 

The median age of all 93 patients was 59 (range, 25-76), and about half were 60 years or older.

 

Two-thirds of patients in cohort 1 and three-quarters in cohort 2 were male. Sixty-six percent of cohort 1 and 40% of cohort 2 had an ECOG performance status of 1.

 

Cohort 1 had a median of 3 prior therapies (range, 1-7), and 44% had an International Prognostic Index (IPI) risk score of 3-4. Cohort 2 had a median of 4 prior therapies (range, 2-12), and 45% had an IPI risk score of 3-4.

 

 

 

Fifty-six DLBCL patients (77%) were refractory to their second or later line of therapy, and 15 (21%) had relapsed after autologous stem cell transplant.

 

Sixteen PMBCL/TFL patients (80%) were refractory to their second or later line of therapy, and 4 (20%) relapsed after autologous stem cell transplant.

 

Results

 

Dr Neelapu indicated that patients responded rapidly to treatment, and most responses were evident at the first tumor assessment.

 

At 3 months’ follow-up or longer, the ORR was 76% and the CR rate 47% for the 51 DLBCL patients in cohort 1. This was a 6-fold higher CR rate compared with historical outcomes.

 

For the 11 PMBCL/TFL patients in cohort 2, the ORR was 91% and the CR rate was 73% at 3 months or longer.

 

Both cohorts combined yielded an ORR of 79% and a CR rate of 52%.

 

The treatment effect was consistent across key covariates—refractory patients, disease stage, IPI risk score, CD4/CD8 ratio, and steroid and tocilizumab use.

 

Dr Neelapu described the case of a 62-year-old male with refractory DLBCL who had 4 prior rituximab-based therapies. He had no response to his last 3 therapies combining rituximab with GDP (gemcitabine, cisplatin, and dexamethasone), ICE (ifosfamide, carboplatin, and etoposide), or lenalidomide.

 

After KTE-C19 therapy, the patient has an ongoing CR that has lasted more than 9 months.

 

Adverse events

 

Sixty-eight DLBCL patients (93%) experienced grade 3 or higher adverse events (AEs). These included 10 patients (14%) with cytokine release syndrome (CRS) and 18 (25%) with neurologic events.

 

Eighteen PMBCL/TFL patients (90%) experienced grade 3 or higher AEs, 2 (10%) with grade 3 or higher CRS and 9 (45%) with grade 3 or higher neurologic events.

 

CRS and neurological events were generally reversible, Dr Neelapu said. All CRS events resolved except 1 in the PMBCL/TFL cohort.

 

In both cohorts combined, 38% of patients received tocilizumab, 17% received corticosteroids, and 17% received both.

 

Three neurological events were ongoing at the data cut-off—grade 1 memory impairment, grade 1 tremor, and grade 2 tremor.

 

There were no cases of cerebral edema.

 

Three patients died from causes other than progressive disease—1 DLBCL patient and 2 in the PMBCL/TFL cohort.

 

Investigators considered the DLBCL patient death (due to hemophagocytic lymphohistiocytosis) and 1 death in the PMBCL/TFL arm (due to cardiac arrest) to be treatment-related.

 

Investigators did not consider the other death in the PMBCL/TFL arm (due to pulmonary embolism) to be treatment-related.

 

The most frequent grade 3 or higher treatment-emergent AEs in both arms combined included neutropenia (63%), anemia (42%), leukopenia (40%), febrile neutropenia (29%), thrombocytopenia (26%), encephalopathy (19%), hypophosphatemia (17%), and decreased lymphocyte count (17%).

 

Peak CAR T-cell expansion occurred between 7 and 14 days and was associated with ongoing CRs and grade 3 or greater neurological events, but not with CRS.

 

AEs were managed effectively across the 22 study sites, Dr Neelapu added, and most sites had no prior CAR T-cell therapy experience.

 

Dr Neelapu noted that the ZUMA-1 results are consistent with earlier KTE-C19 trials in aggressive NHL.

 

The primary analysis for this phase 2 study is expected to occur when all treated patients have 6 months of follow-up in the first quarter of 2017.

 

The study is sponsored by Kite Pharma but is also funded, in part, by the Leukemia and Lymphoma Society Therapy Acceleration Program.

 

*Information in the abstract differs from that presented at the meeting.

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Predicting the risk of CKD in sickle cell anemia

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Micrograph showing sickled

and normal red blood cells

Image by Graham Beards

Researchers say they have identified a genetic risk profile that can be used to predict which patients with sickle cell anemia (SCA) are likely to develop chronic kidney disease (CKD).

The team found evidence to suggest that a profile incorporating APOL1 G1/G2, α-thalassemia, and BCL11A can help physicians categorize SCA patients as having a high or low risk of CKD.

The researchers reported these findings in Haematologica.

Identifying SCA patients at the greatest risk of CKD can help physicians develop proactive, individualized strategies to reduce the high rate of early mortality due to CKD, said study author Santosh Saraf, MD, of the University of Illinois at Chicago.

“We looked at the genetic factors already known to be associated with kidney disease or the degree of red blood cell hemolysis and examined the relationship they had with the condition in sickle cell patients,” Dr Saraf said.

“Our hypothesis was that a genetic risk profile that integrated APOL1, α-thalassemia, and BCL11A would improve our ability to predict a patient’s risk for developing chronic kidney disease.”

To test this theory, Dr Saraf and his colleagues recruited 262 adult patients with SCA treated at a single center between 2010 and 2016. The team collected patient data, drew blood, analyzed genetic markers, and prospectively followed the patients to see if they developed CKD.

Stratification

The researchers used their genetic profile to stratify patients according to risk for CKD.

Patients were considered high-risk if they had APOL1 G1/G2 and wild-type BCL11A but did not have α-thalassemia.

Patients were considered low-risk if they were negative for APOL1 G1/G2 but had α-thalassemia (either α-/αα or α-/α-) and the BCL11A rs1427407 T allele (either G/T or T/T).

The researchers defined all other combinations as intermediate-risk.

The team found the genetic profile identified SCA patients at high and low risk for albuminuria or an estimated glomerular filtration rate less than 60 mL/min/1.73m2.

The researchers also said application of the genetic profile revealed progressively higher rates of CKD progression.

Mechanisms

Dr Saraf and his colleagues noted that homozygosity or compound heterozygosity for APOL1 G1/G2 is the strongest genetic association for CKD in African Americans, and APOL1 G1/G2 is associated with proteinuria and albuminuria in SCA patients.

The researchers pointed out that APOL1 G1/G2 variants associate with CKD in African

Americans by unknown mechanisms, but the team found an association with

hemolysis in SCA, as reflected by hemoglobinuria.

As for α-thalassemia, it’s associated with reduced hemolysis and protection from albuminuria. The researchers said α-thalassemia reduces hemolysis in SCA by decreasing the

intra-erythrocyte concentration of sickle hemoglobin (HbS) and reducing

HbS polymerization.

Finally, Dr Saraf and his colleagues noted that BCL11A rs1427407 leads to higher fetal hemoglobin (HbF) levels, reduced hemolysis, and amelioration of SCA-related complications. The team said the BCL11A rs1427407 T variant leads to decreased function of BCL11A at the HbF promoter and therefore increases HbF, leading to decreased HbS polymerization.

“The results of this study are encouraging,” Dr Saraf said. “By understanding more about the genetic risk factors of kidney disease in sickle cell patients, we are one step closer to improving the length and quality of life for the millions of people worldwide living with sickle cell disease.”

“Using combinations of genes to better predict complications in sickle cell anemia is a new approach,” added study author Victor Gordeuk, MD, of the University of Illinois at Chicago.

“The results of this study indicate that it is effective and probably can be improved on in the future to be an important part of our evaluation of patients.”

 

 

The researchers said the small sample size and observational nature of this study are limitations, and they hope to validate the results with larger studies.

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Micrograph showing sickled

and normal red blood cells

Image by Graham Beards

Researchers say they have identified a genetic risk profile that can be used to predict which patients with sickle cell anemia (SCA) are likely to develop chronic kidney disease (CKD).

The team found evidence to suggest that a profile incorporating APOL1 G1/G2, α-thalassemia, and BCL11A can help physicians categorize SCA patients as having a high or low risk of CKD.

The researchers reported these findings in Haematologica.

Identifying SCA patients at the greatest risk of CKD can help physicians develop proactive, individualized strategies to reduce the high rate of early mortality due to CKD, said study author Santosh Saraf, MD, of the University of Illinois at Chicago.

“We looked at the genetic factors already known to be associated with kidney disease or the degree of red blood cell hemolysis and examined the relationship they had with the condition in sickle cell patients,” Dr Saraf said.

“Our hypothesis was that a genetic risk profile that integrated APOL1, α-thalassemia, and BCL11A would improve our ability to predict a patient’s risk for developing chronic kidney disease.”

To test this theory, Dr Saraf and his colleagues recruited 262 adult patients with SCA treated at a single center between 2010 and 2016. The team collected patient data, drew blood, analyzed genetic markers, and prospectively followed the patients to see if they developed CKD.

Stratification

The researchers used their genetic profile to stratify patients according to risk for CKD.

Patients were considered high-risk if they had APOL1 G1/G2 and wild-type BCL11A but did not have α-thalassemia.

Patients were considered low-risk if they were negative for APOL1 G1/G2 but had α-thalassemia (either α-/αα or α-/α-) and the BCL11A rs1427407 T allele (either G/T or T/T).

The researchers defined all other combinations as intermediate-risk.

The team found the genetic profile identified SCA patients at high and low risk for albuminuria or an estimated glomerular filtration rate less than 60 mL/min/1.73m2.

The researchers also said application of the genetic profile revealed progressively higher rates of CKD progression.

Mechanisms

Dr Saraf and his colleagues noted that homozygosity or compound heterozygosity for APOL1 G1/G2 is the strongest genetic association for CKD in African Americans, and APOL1 G1/G2 is associated with proteinuria and albuminuria in SCA patients.

The researchers pointed out that APOL1 G1/G2 variants associate with CKD in African

Americans by unknown mechanisms, but the team found an association with

hemolysis in SCA, as reflected by hemoglobinuria.

As for α-thalassemia, it’s associated with reduced hemolysis and protection from albuminuria. The researchers said α-thalassemia reduces hemolysis in SCA by decreasing the

intra-erythrocyte concentration of sickle hemoglobin (HbS) and reducing

HbS polymerization.

Finally, Dr Saraf and his colleagues noted that BCL11A rs1427407 leads to higher fetal hemoglobin (HbF) levels, reduced hemolysis, and amelioration of SCA-related complications. The team said the BCL11A rs1427407 T variant leads to decreased function of BCL11A at the HbF promoter and therefore increases HbF, leading to decreased HbS polymerization.

“The results of this study are encouraging,” Dr Saraf said. “By understanding more about the genetic risk factors of kidney disease in sickle cell patients, we are one step closer to improving the length and quality of life for the millions of people worldwide living with sickle cell disease.”

“Using combinations of genes to better predict complications in sickle cell anemia is a new approach,” added study author Victor Gordeuk, MD, of the University of Illinois at Chicago.

“The results of this study indicate that it is effective and probably can be improved on in the future to be an important part of our evaluation of patients.”

 

 

The researchers said the small sample size and observational nature of this study are limitations, and they hope to validate the results with larger studies.

Micrograph showing sickled

and normal red blood cells

Image by Graham Beards

Researchers say they have identified a genetic risk profile that can be used to predict which patients with sickle cell anemia (SCA) are likely to develop chronic kidney disease (CKD).

The team found evidence to suggest that a profile incorporating APOL1 G1/G2, α-thalassemia, and BCL11A can help physicians categorize SCA patients as having a high or low risk of CKD.

The researchers reported these findings in Haematologica.

Identifying SCA patients at the greatest risk of CKD can help physicians develop proactive, individualized strategies to reduce the high rate of early mortality due to CKD, said study author Santosh Saraf, MD, of the University of Illinois at Chicago.

“We looked at the genetic factors already known to be associated with kidney disease or the degree of red blood cell hemolysis and examined the relationship they had with the condition in sickle cell patients,” Dr Saraf said.

“Our hypothesis was that a genetic risk profile that integrated APOL1, α-thalassemia, and BCL11A would improve our ability to predict a patient’s risk for developing chronic kidney disease.”

To test this theory, Dr Saraf and his colleagues recruited 262 adult patients with SCA treated at a single center between 2010 and 2016. The team collected patient data, drew blood, analyzed genetic markers, and prospectively followed the patients to see if they developed CKD.

Stratification

The researchers used their genetic profile to stratify patients according to risk for CKD.

Patients were considered high-risk if they had APOL1 G1/G2 and wild-type BCL11A but did not have α-thalassemia.

Patients were considered low-risk if they were negative for APOL1 G1/G2 but had α-thalassemia (either α-/αα or α-/α-) and the BCL11A rs1427407 T allele (either G/T or T/T).

The researchers defined all other combinations as intermediate-risk.

The team found the genetic profile identified SCA patients at high and low risk for albuminuria or an estimated glomerular filtration rate less than 60 mL/min/1.73m2.

The researchers also said application of the genetic profile revealed progressively higher rates of CKD progression.

Mechanisms

Dr Saraf and his colleagues noted that homozygosity or compound heterozygosity for APOL1 G1/G2 is the strongest genetic association for CKD in African Americans, and APOL1 G1/G2 is associated with proteinuria and albuminuria in SCA patients.

The researchers pointed out that APOL1 G1/G2 variants associate with CKD in African

Americans by unknown mechanisms, but the team found an association with

hemolysis in SCA, as reflected by hemoglobinuria.

As for α-thalassemia, it’s associated with reduced hemolysis and protection from albuminuria. The researchers said α-thalassemia reduces hemolysis in SCA by decreasing the

intra-erythrocyte concentration of sickle hemoglobin (HbS) and reducing

HbS polymerization.

Finally, Dr Saraf and his colleagues noted that BCL11A rs1427407 leads to higher fetal hemoglobin (HbF) levels, reduced hemolysis, and amelioration of SCA-related complications. The team said the BCL11A rs1427407 T variant leads to decreased function of BCL11A at the HbF promoter and therefore increases HbF, leading to decreased HbS polymerization.

“The results of this study are encouraging,” Dr Saraf said. “By understanding more about the genetic risk factors of kidney disease in sickle cell patients, we are one step closer to improving the length and quality of life for the millions of people worldwide living with sickle cell disease.”

“Using combinations of genes to better predict complications in sickle cell anemia is a new approach,” added study author Victor Gordeuk, MD, of the University of Illinois at Chicago.

“The results of this study indicate that it is effective and probably can be improved on in the future to be an important part of our evaluation of patients.”

 

 

The researchers said the small sample size and observational nature of this study are limitations, and they hope to validate the results with larger studies.

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Chemical could aid malaria control

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Anopheles gambiae mosquito

Photo courtesy of the CDC

A chemical that disrupts hormone signaling in mosquitoes may reduce their ability to transmit malaria, according to a study published in PLOS Pathogens.

The findings suggest a potential new approach to combat spread of the disease.

“As insecticide resistance is spreading, new intervention methods to control mosquitoes are urgently needed,” said study author Flaminia Catteruccia, PhD, of the Harvard T. H. Chan School of Public Health in Boston, Massachusetts.

“Our study provides a new strategy based on the use of a non-toxic compound that prevents transmission of malaria parasites without killing the mosquito.”

Dr Catteruccia and her colleagues treated adult female Anopheles gambiae mosquitoes with a chemical known as dibenzoylhydrazine (DBH) to see how it would impact their biological processes.

DBH mimics the action of the steroid hormone 20-hydroxyecdysone, which plays a key role in the reproductive cycle of the female mosquito.

The researchers found various aspects of the mosquitoes’ life cycle to be disrupted after treatment with DBH.

DBH-treated mosquitoes produced and laid fewer eggs, didn’t mate successfully, and died more rapidly than non-treated mosquitoes. The effects were greater the higher the DBH dose.

And DBH-treated mosquitoes were less likely to be infected by malaria parasites.

To further explore the potential of hormone targeting as a malaria control tactic, the researchers fed their experimental results into a mathematical model of the mosquito life cycle.

The results suggest that applying DBH to bed nets or spraying it indoors could potentially reduce malaria transmission as effectively as insecticides.

The researchers noted that DBH compounds are not toxic to mammals, which would make them ideally suited for use in bed nets, where low toxicity is essential.

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Anopheles gambiae mosquito

Photo courtesy of the CDC

A chemical that disrupts hormone signaling in mosquitoes may reduce their ability to transmit malaria, according to a study published in PLOS Pathogens.

The findings suggest a potential new approach to combat spread of the disease.

“As insecticide resistance is spreading, new intervention methods to control mosquitoes are urgently needed,” said study author Flaminia Catteruccia, PhD, of the Harvard T. H. Chan School of Public Health in Boston, Massachusetts.

“Our study provides a new strategy based on the use of a non-toxic compound that prevents transmission of malaria parasites without killing the mosquito.”

Dr Catteruccia and her colleagues treated adult female Anopheles gambiae mosquitoes with a chemical known as dibenzoylhydrazine (DBH) to see how it would impact their biological processes.

DBH mimics the action of the steroid hormone 20-hydroxyecdysone, which plays a key role in the reproductive cycle of the female mosquito.

The researchers found various aspects of the mosquitoes’ life cycle to be disrupted after treatment with DBH.

DBH-treated mosquitoes produced and laid fewer eggs, didn’t mate successfully, and died more rapidly than non-treated mosquitoes. The effects were greater the higher the DBH dose.

And DBH-treated mosquitoes were less likely to be infected by malaria parasites.

To further explore the potential of hormone targeting as a malaria control tactic, the researchers fed their experimental results into a mathematical model of the mosquito life cycle.

The results suggest that applying DBH to bed nets or spraying it indoors could potentially reduce malaria transmission as effectively as insecticides.

The researchers noted that DBH compounds are not toxic to mammals, which would make them ideally suited for use in bed nets, where low toxicity is essential.

Anopheles gambiae mosquito

Photo courtesy of the CDC

A chemical that disrupts hormone signaling in mosquitoes may reduce their ability to transmit malaria, according to a study published in PLOS Pathogens.

The findings suggest a potential new approach to combat spread of the disease.

“As insecticide resistance is spreading, new intervention methods to control mosquitoes are urgently needed,” said study author Flaminia Catteruccia, PhD, of the Harvard T. H. Chan School of Public Health in Boston, Massachusetts.

“Our study provides a new strategy based on the use of a non-toxic compound that prevents transmission of malaria parasites without killing the mosquito.”

Dr Catteruccia and her colleagues treated adult female Anopheles gambiae mosquitoes with a chemical known as dibenzoylhydrazine (DBH) to see how it would impact their biological processes.

DBH mimics the action of the steroid hormone 20-hydroxyecdysone, which plays a key role in the reproductive cycle of the female mosquito.

The researchers found various aspects of the mosquitoes’ life cycle to be disrupted after treatment with DBH.

DBH-treated mosquitoes produced and laid fewer eggs, didn’t mate successfully, and died more rapidly than non-treated mosquitoes. The effects were greater the higher the DBH dose.

And DBH-treated mosquitoes were less likely to be infected by malaria parasites.

To further explore the potential of hormone targeting as a malaria control tactic, the researchers fed their experimental results into a mathematical model of the mosquito life cycle.

The results suggest that applying DBH to bed nets or spraying it indoors could potentially reduce malaria transmission as effectively as insecticides.

The researchers noted that DBH compounds are not toxic to mammals, which would make them ideally suited for use in bed nets, where low toxicity is essential.

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Congenital CMV linked to increased risk of ALL

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Sleeping newborn

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Newborns with congenital cytomegalovirus (CMV) infection may have an increased risk of developing acute lymphoblastic leukemia (ALL), according to a study published in Blood.

The data also suggest the risk may be particularly high among Hispanic children.

Researchers said this is the first study to suggest that congenital CMV infection is a risk factor for childhood ALL and is more prominent in Hispanic children.

To conduct this study, the researchers first identified all known infections present in the bone marrow of 127 children diagnosed with ALL and 38 children diagnosed with acute myeloid leukemia (AML).

The team found CMV infection was prevalent in children with ALL but rare in those with AML.

Next, the researchers looked for CMV in newborn blood samples from 268 children who went on to develop ALL. The team compared the samples with samples from 270 healthy children.

“Our goal in tracking CMV back from the time of diagnosis to the womb was to establish that this infection occurred well before initiation of disease,” said lead study author Stephen Francis, PhD, of the University of Nevada and University of California, San Francisco.

He and his colleagues found that children who went on to develop ALL were nearly 4 times more likely than control subjects to be CMV-positive at birth. The odds ratio was 3.71 (P=0.0016).

The odds ratio was 5.9 in Hispanic children and 2.1 in non-Hispanic whites. The researchers said this finding is particularly interesting because of the high rate of ALL observed in Hispanics.

“If it’s true that in utero CMV is one of the initiating events in the development of childhood leukemia, then control of the virus has the potential to be a prevention target,” Dr Francis said. “That’s the real take-home message.”

While this research is in the early stages, the researchers hope these results will inspire more studies that will validate these findings and lead to the development of a CMV vaccine.

“This is the first step, but if we do end up finding a causal link to the most common childhood cancer, we hope that will light a fire in terms of stopping mother-to-child transmission of CMV,” Dr Francis said.

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Sleeping newborn

Photo by Vera Kratochvil

Newborns with congenital cytomegalovirus (CMV) infection may have an increased risk of developing acute lymphoblastic leukemia (ALL), according to a study published in Blood.

The data also suggest the risk may be particularly high among Hispanic children.

Researchers said this is the first study to suggest that congenital CMV infection is a risk factor for childhood ALL and is more prominent in Hispanic children.

To conduct this study, the researchers first identified all known infections present in the bone marrow of 127 children diagnosed with ALL and 38 children diagnosed with acute myeloid leukemia (AML).

The team found CMV infection was prevalent in children with ALL but rare in those with AML.

Next, the researchers looked for CMV in newborn blood samples from 268 children who went on to develop ALL. The team compared the samples with samples from 270 healthy children.

“Our goal in tracking CMV back from the time of diagnosis to the womb was to establish that this infection occurred well before initiation of disease,” said lead study author Stephen Francis, PhD, of the University of Nevada and University of California, San Francisco.

He and his colleagues found that children who went on to develop ALL were nearly 4 times more likely than control subjects to be CMV-positive at birth. The odds ratio was 3.71 (P=0.0016).

The odds ratio was 5.9 in Hispanic children and 2.1 in non-Hispanic whites. The researchers said this finding is particularly interesting because of the high rate of ALL observed in Hispanics.

“If it’s true that in utero CMV is one of the initiating events in the development of childhood leukemia, then control of the virus has the potential to be a prevention target,” Dr Francis said. “That’s the real take-home message.”

While this research is in the early stages, the researchers hope these results will inspire more studies that will validate these findings and lead to the development of a CMV vaccine.

“This is the first step, but if we do end up finding a causal link to the most common childhood cancer, we hope that will light a fire in terms of stopping mother-to-child transmission of CMV,” Dr Francis said.

Sleeping newborn

Photo by Vera Kratochvil

Newborns with congenital cytomegalovirus (CMV) infection may have an increased risk of developing acute lymphoblastic leukemia (ALL), according to a study published in Blood.

The data also suggest the risk may be particularly high among Hispanic children.

Researchers said this is the first study to suggest that congenital CMV infection is a risk factor for childhood ALL and is more prominent in Hispanic children.

To conduct this study, the researchers first identified all known infections present in the bone marrow of 127 children diagnosed with ALL and 38 children diagnosed with acute myeloid leukemia (AML).

The team found CMV infection was prevalent in children with ALL but rare in those with AML.

Next, the researchers looked for CMV in newborn blood samples from 268 children who went on to develop ALL. The team compared the samples with samples from 270 healthy children.

“Our goal in tracking CMV back from the time of diagnosis to the womb was to establish that this infection occurred well before initiation of disease,” said lead study author Stephen Francis, PhD, of the University of Nevada and University of California, San Francisco.

He and his colleagues found that children who went on to develop ALL were nearly 4 times more likely than control subjects to be CMV-positive at birth. The odds ratio was 3.71 (P=0.0016).

The odds ratio was 5.9 in Hispanic children and 2.1 in non-Hispanic whites. The researchers said this finding is particularly interesting because of the high rate of ALL observed in Hispanics.

“If it’s true that in utero CMV is one of the initiating events in the development of childhood leukemia, then control of the virus has the potential to be a prevention target,” Dr Francis said. “That’s the real take-home message.”

While this research is in the early stages, the researchers hope these results will inspire more studies that will validate these findings and lead to the development of a CMV vaccine.

“This is the first step, but if we do end up finding a causal link to the most common childhood cancer, we hope that will light a fire in terms of stopping mother-to-child transmission of CMV,” Dr Francis said.

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How to Categorize Pediatric Asthma

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Does Chronic Complaining Mask Acute Problem?

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The radiograph demonstrates age-related degenerative changes. Of note is a moderate compression fracture of L3 with close to 50% loss of height. It is difficult to say for sure the fracture is acute; by plain film alone, it would be deemed age indeterminate. 

Of concern, though, is the posterior portion of the superior endplate of L3, which appears to be posteriorly displaced into the spinal canal. This finding suggests possible retropulsion and, if this fracture was in fact acute, would suggest a possible unstable fracture. Further imaging is warranted. 

The patient underwent noncontrast CT of the lumbar spine, which demonstrated that the fracture was acute. It also indicated that there was dorsal retropulsion causing close to 50% canal compromise. The patient was subsequently admitted for further workup and evaluation.

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ANSWER

The radiograph demonstrates age-related degenerative changes. Of note is a moderate compression fracture of L3 with close to 50% loss of height. It is difficult to say for sure the fracture is acute; by plain film alone, it would be deemed age indeterminate. 

Of concern, though, is the posterior portion of the superior endplate of L3, which appears to be posteriorly displaced into the spinal canal. This finding suggests possible retropulsion and, if this fracture was in fact acute, would suggest a possible unstable fracture. Further imaging is warranted. 

The patient underwent noncontrast CT of the lumbar spine, which demonstrated that the fracture was acute. It also indicated that there was dorsal retropulsion causing close to 50% canal compromise. The patient was subsequently admitted for further workup and evaluation.

ANSWER

The radiograph demonstrates age-related degenerative changes. Of note is a moderate compression fracture of L3 with close to 50% loss of height. It is difficult to say for sure the fracture is acute; by plain film alone, it would be deemed age indeterminate. 

Of concern, though, is the posterior portion of the superior endplate of L3, which appears to be posteriorly displaced into the spinal canal. This finding suggests possible retropulsion and, if this fracture was in fact acute, would suggest a possible unstable fracture. Further imaging is warranted. 

The patient underwent noncontrast CT of the lumbar spine, which demonstrated that the fracture was acute. It also indicated that there was dorsal retropulsion causing close to 50% canal compromise. The patient was subsequently admitted for further workup and evaluation.

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An 80-year-old woman who resides in a nursing home is sent to urgent care for evaluation of back pain. There have been no witnessed injuries or falls. The notes from the nursing home staff indicate that the patient, who has severe dementia, tends to chronically complain about one ailment or another. However, the patient’s family seems to feel she is complaining more than usual.

Her only other medical history is controlled hypertension. Her vital signs are stable. On physical exam, you note an elderly female who is pleasant but very confused. She is able to follow simple commands and appears to be able to move all her extremities well, with no obvious neurologic compromise. Inspection of her back does not demonstrate any obvious wounds, bruising, or step-offs. She does have generalized tenderness as you palpate her lumbar region.

The triage nurse already ordered lumbar spine radiographs, which have been completed. The lateral view is shown. What is your impression?

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PIK3 inhibitor gives slight PFS edge at high cost for HR+/HER2– advanced breast cancer

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– A combination of a PI3K inhibitor and selective estrogen receptor down-regulator (SERD) met its primary endpoint of 2.1 months better progression-free survival (PFS) in postmenopausal women with locally advanced or metastatic breast cancer who were quickly running out of other treatment options.

Yet the small gain in PFS came at a very high price in terms of toxicities, including mood disorders that may have led to patient suicide attempts, according to investigators.

The BELLE-3 trial looked at the combination of the SERD fulvestrant (Faslodex) and an experimental inhibitor of the PI3 kinase, buparlisib, in postmenopausal women with hormone receptor–positive, human epidermal growth factor receptor–2 (HER2)-negative breast cancer treated with an aromatase inhibitor (AI) who experienced disease progression either on or after receiving therapy with an inhibitor of the mammalian target of rapamycin complex 1 (mTORC1).

The combination of fulvestrant and buparlisib was associated with a median PFS of 3.9 months, compared with 1.8 months for fulvestrant and placebo (P less than .001), Angelo Di Leo, MD, of Ospedale Misericordia e Dolce in Prato, Italy, reported at the San Antonio Breast Cancer Symposium,

Objective response rates (ORR) were low, at 7.8% in the combination arm, and 2.1% in the fulvestrant-plus-placebo arm.

Although the PFS difference was statistically significant, “the higher rate of toxicity in patients receiving buparlisib and fulvestrant, including transaminase elevations and mood disorders, may represent a clinically relevant challenge for future development of this compound in this particular group of patients,” Dr. Di Leo said.
 

Blocks AKT pathway

The preclinical rationale for the use of a P13K inhibitor after disease progression on mTORC1 inhibitor is that current mTOR inhibitors such as everolimus have a feedback mechanism that activates the AKT pathway, and that the use of P13K inhibitors can “abrogate or attenuate this activation, potentially blocking that pathway,” explained coinvestigator Ruth O’Regan, MD, head of the division of hematology and oncology at the University of Wisconsin–Madison School of Medicine and Public Health. Dr. O’Regan discussed the BELLE-3 findings in a briefing prior to Dr. Di Leo’s presentation of the data in general session.

Dr. Ruth O'Regan

In BELLE-3, 432 postmenopausal women with HR+/HER2-, AI-pretreated, locally advanced or metastatic breast cancer that had progressed on or after treatment with an mTOR inhibitor as the last line of therapy were enrolled. The patients were stratified by the presence or absence of visceral disease and then randomized on a 2:1 basis to fulvestrant 500 mg daily plus either buparlisib 100 mg/day (289 patients), or placebo (143).

As noted, the primary endpoint of investigator-assessed PFS favored the addition of buparlisib, with a hazard ratio for progression of 0.67 (P less than .001). PFS results by independent central review were similar (HR 0.57, P less than .001).

The ORR for the buparlisib/fulvestrant combination, 7.6%, consisted of 0.3% complete responses, and 7.3% partial responses. The ORR for placebo/fulvestrant, 2.1%, was composed entirely of partial responses. The respective clinical benefit rates, defined as a combination of complete and partial responses and stable disease, were 24.6% and 15.4.

The benefit of buparlisib was evidently entirely among patients with visceral disease, with a PFS of 3.1 vs. 1.5 months. In contrast, PFS among patients with no visceral disease was 4.2 vs. 4.1 months, respectively, and was not significant.

In addition, the P13K inhibitor seemed to benefit patients with PIK3CA mutations detected in either the primary tumor or in circulating DNA samples, but not patients with wild-type PIK3CA.
 

Depression, anxiety with combination

Patients assigned to buparlisib/fulvestrant had substantially higher proportions of alanine aminotransferase (ALT) and aspartate aminotransferase (AST) elevations compared with patients on placebo fulvestrant, as well as more reported depression and anxiety. Three patients in the buparlisib arm attempted suicide. There were no reported suicide attempts in the placebo arm.

Dr. O’Regan said at the briefing that mood disorders are known adverse events associated with buparlisib, and that patients with psychiatric disorders were excluded from the trial.

Carlos Arteaga, MD, co-leader of the Breast Cancer Research Program at Vanderbilt-Ingram Cancer Center in Nashville, Tenn., who moderated the briefing, said in an interview that PI kinase mutations do not appear to be a good target, and that a pan-PIK3 inhibitor such as buparlisib may be hitting too many targets at once.

Inhibiting all of the PIK3 isoforms – alpha, beta, gamma, and delta – “may be a little too tough,” he said.

The trial should serve as impetus for developing agents that inhibit only the alpha isoform of PIK3 which mutates and appears to be the driver of some types of breast cancer, he said.

Following Dr. Di Leo’s presentation, perennial SABCS gadfly Steven Vogl, MD, New York, told the speaker that “you presented this very nicely, it’s very interesting biology. I don’t think you’d want to do this again to a human, right? Three month prolongation in PFS, miserable, with diarrhea, depression – you don’t want to do this again, is that correct?”

“I think buparlisib is probably not the best compound to be used in this particular setting of patients,” Dr. Di Leo said, but added that a better-tolerated PI3K inhibitor might be more effective.

“Actually, the study is raising an important question: Should we use the PI3K inhibitor in place of the mTOR inhibitor, or perhaps, as the study suggests, should we use the P13K inhibitors sequentially, after the mTOR inhibitor. This is an open question,” he replied.

Novartis sponsored the study. Dr. Di Leo disclosed consulting and lecture fees from the company, and Dr. O’Regan disclosed contracted research support. Dr. Arteaga reported no disclosures relevant to the study.

 

 

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– A combination of a PI3K inhibitor and selective estrogen receptor down-regulator (SERD) met its primary endpoint of 2.1 months better progression-free survival (PFS) in postmenopausal women with locally advanced or metastatic breast cancer who were quickly running out of other treatment options.

Yet the small gain in PFS came at a very high price in terms of toxicities, including mood disorders that may have led to patient suicide attempts, according to investigators.

The BELLE-3 trial looked at the combination of the SERD fulvestrant (Faslodex) and an experimental inhibitor of the PI3 kinase, buparlisib, in postmenopausal women with hormone receptor–positive, human epidermal growth factor receptor–2 (HER2)-negative breast cancer treated with an aromatase inhibitor (AI) who experienced disease progression either on or after receiving therapy with an inhibitor of the mammalian target of rapamycin complex 1 (mTORC1).

The combination of fulvestrant and buparlisib was associated with a median PFS of 3.9 months, compared with 1.8 months for fulvestrant and placebo (P less than .001), Angelo Di Leo, MD, of Ospedale Misericordia e Dolce in Prato, Italy, reported at the San Antonio Breast Cancer Symposium,

Objective response rates (ORR) were low, at 7.8% in the combination arm, and 2.1% in the fulvestrant-plus-placebo arm.

Although the PFS difference was statistically significant, “the higher rate of toxicity in patients receiving buparlisib and fulvestrant, including transaminase elevations and mood disorders, may represent a clinically relevant challenge for future development of this compound in this particular group of patients,” Dr. Di Leo said.
 

Blocks AKT pathway

The preclinical rationale for the use of a P13K inhibitor after disease progression on mTORC1 inhibitor is that current mTOR inhibitors such as everolimus have a feedback mechanism that activates the AKT pathway, and that the use of P13K inhibitors can “abrogate or attenuate this activation, potentially blocking that pathway,” explained coinvestigator Ruth O’Regan, MD, head of the division of hematology and oncology at the University of Wisconsin–Madison School of Medicine and Public Health. Dr. O’Regan discussed the BELLE-3 findings in a briefing prior to Dr. Di Leo’s presentation of the data in general session.

Dr. Ruth O'Regan

In BELLE-3, 432 postmenopausal women with HR+/HER2-, AI-pretreated, locally advanced or metastatic breast cancer that had progressed on or after treatment with an mTOR inhibitor as the last line of therapy were enrolled. The patients were stratified by the presence or absence of visceral disease and then randomized on a 2:1 basis to fulvestrant 500 mg daily plus either buparlisib 100 mg/day (289 patients), or placebo (143).

As noted, the primary endpoint of investigator-assessed PFS favored the addition of buparlisib, with a hazard ratio for progression of 0.67 (P less than .001). PFS results by independent central review were similar (HR 0.57, P less than .001).

The ORR for the buparlisib/fulvestrant combination, 7.6%, consisted of 0.3% complete responses, and 7.3% partial responses. The ORR for placebo/fulvestrant, 2.1%, was composed entirely of partial responses. The respective clinical benefit rates, defined as a combination of complete and partial responses and stable disease, were 24.6% and 15.4.

The benefit of buparlisib was evidently entirely among patients with visceral disease, with a PFS of 3.1 vs. 1.5 months. In contrast, PFS among patients with no visceral disease was 4.2 vs. 4.1 months, respectively, and was not significant.

In addition, the P13K inhibitor seemed to benefit patients with PIK3CA mutations detected in either the primary tumor or in circulating DNA samples, but not patients with wild-type PIK3CA.
 

Depression, anxiety with combination

Patients assigned to buparlisib/fulvestrant had substantially higher proportions of alanine aminotransferase (ALT) and aspartate aminotransferase (AST) elevations compared with patients on placebo fulvestrant, as well as more reported depression and anxiety. Three patients in the buparlisib arm attempted suicide. There were no reported suicide attempts in the placebo arm.

Dr. O’Regan said at the briefing that mood disorders are known adverse events associated with buparlisib, and that patients with psychiatric disorders were excluded from the trial.

Carlos Arteaga, MD, co-leader of the Breast Cancer Research Program at Vanderbilt-Ingram Cancer Center in Nashville, Tenn., who moderated the briefing, said in an interview that PI kinase mutations do not appear to be a good target, and that a pan-PIK3 inhibitor such as buparlisib may be hitting too many targets at once.

Inhibiting all of the PIK3 isoforms – alpha, beta, gamma, and delta – “may be a little too tough,” he said.

The trial should serve as impetus for developing agents that inhibit only the alpha isoform of PIK3 which mutates and appears to be the driver of some types of breast cancer, he said.

Following Dr. Di Leo’s presentation, perennial SABCS gadfly Steven Vogl, MD, New York, told the speaker that “you presented this very nicely, it’s very interesting biology. I don’t think you’d want to do this again to a human, right? Three month prolongation in PFS, miserable, with diarrhea, depression – you don’t want to do this again, is that correct?”

“I think buparlisib is probably not the best compound to be used in this particular setting of patients,” Dr. Di Leo said, but added that a better-tolerated PI3K inhibitor might be more effective.

“Actually, the study is raising an important question: Should we use the PI3K inhibitor in place of the mTOR inhibitor, or perhaps, as the study suggests, should we use the P13K inhibitors sequentially, after the mTOR inhibitor. This is an open question,” he replied.

Novartis sponsored the study. Dr. Di Leo disclosed consulting and lecture fees from the company, and Dr. O’Regan disclosed contracted research support. Dr. Arteaga reported no disclosures relevant to the study.

 

 

 

– A combination of a PI3K inhibitor and selective estrogen receptor down-regulator (SERD) met its primary endpoint of 2.1 months better progression-free survival (PFS) in postmenopausal women with locally advanced or metastatic breast cancer who were quickly running out of other treatment options.

Yet the small gain in PFS came at a very high price in terms of toxicities, including mood disorders that may have led to patient suicide attempts, according to investigators.

The BELLE-3 trial looked at the combination of the SERD fulvestrant (Faslodex) and an experimental inhibitor of the PI3 kinase, buparlisib, in postmenopausal women with hormone receptor–positive, human epidermal growth factor receptor–2 (HER2)-negative breast cancer treated with an aromatase inhibitor (AI) who experienced disease progression either on or after receiving therapy with an inhibitor of the mammalian target of rapamycin complex 1 (mTORC1).

The combination of fulvestrant and buparlisib was associated with a median PFS of 3.9 months, compared with 1.8 months for fulvestrant and placebo (P less than .001), Angelo Di Leo, MD, of Ospedale Misericordia e Dolce in Prato, Italy, reported at the San Antonio Breast Cancer Symposium,

Objective response rates (ORR) were low, at 7.8% in the combination arm, and 2.1% in the fulvestrant-plus-placebo arm.

Although the PFS difference was statistically significant, “the higher rate of toxicity in patients receiving buparlisib and fulvestrant, including transaminase elevations and mood disorders, may represent a clinically relevant challenge for future development of this compound in this particular group of patients,” Dr. Di Leo said.
 

Blocks AKT pathway

The preclinical rationale for the use of a P13K inhibitor after disease progression on mTORC1 inhibitor is that current mTOR inhibitors such as everolimus have a feedback mechanism that activates the AKT pathway, and that the use of P13K inhibitors can “abrogate or attenuate this activation, potentially blocking that pathway,” explained coinvestigator Ruth O’Regan, MD, head of the division of hematology and oncology at the University of Wisconsin–Madison School of Medicine and Public Health. Dr. O’Regan discussed the BELLE-3 findings in a briefing prior to Dr. Di Leo’s presentation of the data in general session.

Dr. Ruth O'Regan

In BELLE-3, 432 postmenopausal women with HR+/HER2-, AI-pretreated, locally advanced or metastatic breast cancer that had progressed on or after treatment with an mTOR inhibitor as the last line of therapy were enrolled. The patients were stratified by the presence or absence of visceral disease and then randomized on a 2:1 basis to fulvestrant 500 mg daily plus either buparlisib 100 mg/day (289 patients), or placebo (143).

As noted, the primary endpoint of investigator-assessed PFS favored the addition of buparlisib, with a hazard ratio for progression of 0.67 (P less than .001). PFS results by independent central review were similar (HR 0.57, P less than .001).

The ORR for the buparlisib/fulvestrant combination, 7.6%, consisted of 0.3% complete responses, and 7.3% partial responses. The ORR for placebo/fulvestrant, 2.1%, was composed entirely of partial responses. The respective clinical benefit rates, defined as a combination of complete and partial responses and stable disease, were 24.6% and 15.4.

The benefit of buparlisib was evidently entirely among patients with visceral disease, with a PFS of 3.1 vs. 1.5 months. In contrast, PFS among patients with no visceral disease was 4.2 vs. 4.1 months, respectively, and was not significant.

In addition, the P13K inhibitor seemed to benefit patients with PIK3CA mutations detected in either the primary tumor or in circulating DNA samples, but not patients with wild-type PIK3CA.
 

Depression, anxiety with combination

Patients assigned to buparlisib/fulvestrant had substantially higher proportions of alanine aminotransferase (ALT) and aspartate aminotransferase (AST) elevations compared with patients on placebo fulvestrant, as well as more reported depression and anxiety. Three patients in the buparlisib arm attempted suicide. There were no reported suicide attempts in the placebo arm.

Dr. O’Regan said at the briefing that mood disorders are known adverse events associated with buparlisib, and that patients with psychiatric disorders were excluded from the trial.

Carlos Arteaga, MD, co-leader of the Breast Cancer Research Program at Vanderbilt-Ingram Cancer Center in Nashville, Tenn., who moderated the briefing, said in an interview that PI kinase mutations do not appear to be a good target, and that a pan-PIK3 inhibitor such as buparlisib may be hitting too many targets at once.

Inhibiting all of the PIK3 isoforms – alpha, beta, gamma, and delta – “may be a little too tough,” he said.

The trial should serve as impetus for developing agents that inhibit only the alpha isoform of PIK3 which mutates and appears to be the driver of some types of breast cancer, he said.

Following Dr. Di Leo’s presentation, perennial SABCS gadfly Steven Vogl, MD, New York, told the speaker that “you presented this very nicely, it’s very interesting biology. I don’t think you’d want to do this again to a human, right? Three month prolongation in PFS, miserable, with diarrhea, depression – you don’t want to do this again, is that correct?”

“I think buparlisib is probably not the best compound to be used in this particular setting of patients,” Dr. Di Leo said, but added that a better-tolerated PI3K inhibitor might be more effective.

“Actually, the study is raising an important question: Should we use the PI3K inhibitor in place of the mTOR inhibitor, or perhaps, as the study suggests, should we use the P13K inhibitors sequentially, after the mTOR inhibitor. This is an open question,” he replied.

Novartis sponsored the study. Dr. Di Leo disclosed consulting and lecture fees from the company, and Dr. O’Regan disclosed contracted research support. Dr. Arteaga reported no disclosures relevant to the study.

 

 

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Key clinical point: The PI3K inhibitor buparlisib plus fulvestrant slightly prolonged progression-free survival of HR+/HER2– breast cancer pretreated with an aromatase inhibitor and mTOR inhibitor.

Major finding: The combination met its primary endpoint of better PFS than fulvestrant/placebo, but with high liver toxicity and mood disorders.

Data source: Randomized phase III trial of 432 women with hormone receptor–positive, HER2-negative, AI-pretreated breast cancer that progressed on or after mTOR inhibitor therapy.

Disclosures: Novartis sponsored the study. Dr. Di Leo disclosed consulting and lecture fees from the company, and Dr. O’Regan disclosed contracted research support. Dr. Arteaga reported no disclosures relevant to the study.

More tricuspid valve regurgitation should be fixed

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CHICAGO– Fixing the tricuspid valve should be part of left-sided heart operations in many cases of functional tricuspid regurgitation, but study data and international guidelines supporting the practice are too frequently ignored, said Steven Bolling, MD.

Speaking during Heart Valve Summit 2016, Dr. Bolling said that of the approximately four million U.S. individuals with mitral regurgitation, about 1.6 million, or 40%, have concomitant tricuspid regurgitation (TR). Yet, he said, only about 7,000 concomitant tricuspid valve (TV) repairs are performed in the 60,000 patients receiving mitral valve (MV) repair surgery annually, for a TV repair rate of less than 12%. “Tricuspid regurgitation is ignored,” said Dr. Bolling, a conference organizer and professor of surgery at the University of Michigan, Ann Arbor.

Dr. Allen C. Bolling
“When functional tricuspid regurgitation is fixed, the right ventricle gets better,” said Dr. Bolling, citing a study that showed favorable right ventricular remodeling after concomitant MV-TV repair.

A 2015 study followed 645 consecutive patients who underwent primary repair of degenerative mitral regurgitation. The patients who had concomitant TVR, he said, “had far less TR, better right ventricle function, and it’s safe. There was lower mortality and morbidity” (J Am Coll Cardiol. 2015 May 12;65[18]:1931-8).

Citing a study of 5,589 patients undergoing surgery for mitral valve regurgitation only, 16% of these had severe – grade 3-4+ – TR preoperatively. However, at discharge, 62% of those had severe residual TR. Despite a “good” mitral result, said Dr. Bolling, multiple studies dating back to the 1980s have demonstrated that surgical repair of just the mitral valve still results in functional tricuspid regurgitation (FTR) rates of up to 67%. “There’s no guarantee of FTR ‘getting better,’” said Dr. Bolling.

The problem lies fundamentally in the annular dilation and change of shape of the tricuspid annulus, and so these issues must be addressed for a good functional result, he said. This dilation and distortion has been shown to occur in up to 75% of all cases of MR (Circulation. 2006;114:1-492).

“Placing an ‘undersized’ tricuspid ring is actually restoring normal sizing to the annulus,” said Dr. Bolling. The normal tricuspid annular dimension is 2.8 cm, plus or minus 0.5 cm, he said. Patients fare better both in the immediate postoperative period and at follow-up with an “undersized” TV repair for FTR, he said.

And surgeons shouldn’t worry about stenosis with an “undersized” TV repair, he said. High school geometry shows that a 26-mm valve diameter yields an area of about 4 square cm, for a 2- to 3-mm gradient, said Dr. Bolling.

Detection of tricuspid regurgitation can itself be a tricky prospect, because tricuspid regurgitation is dynamic. “You should look for functional tricuspid regurgitation preoperatively,” said Dr. Bolling. “Under anesthesia, four-plus TR can become mild.” Accordingly, any significant intraoperative TR or a dilated annulus should be considered indications for tricuspid valve repair, he said.

Though adding TV repair to mitral surgery may add some complexity, it does not necessarily add risk, said Dr. Bolling, citing a study of 110 matched patients with FTR that found a trend toward lower 30-day mortality for combined repair, when compared to mitral repair only (2% versus 8.5%, P = .2).

However, the single-intervention group had a 40% rate of tricuspid progression compared to 5% when both valves were repaired, and the 5-year survival rate was higher for those who had the combined surgery (74% versus 45%; Ann Thorac Surg. 2009 Mar;87[3]:698-703).

According to American College of Cardiology/American Heart Association (ACC/AHA) guidelines for managing valvular heart disease, which were last updated in 2014, patients with severe TR who are undergoing left-sided valve surgery should have concomitant TV repair, a class I recommendation.

The European Society of Cardiology and the European Association for Cardio-Thoracic Surgery (ESC/EACTS) 2012 guidelines are in accord with the ACC/AHA for this population, also issuing a class I recommendation.

For patients with greater than mild TR who have tricuspid annular dilation or right-sided heart failure, TV repair is a class IIa recommendation, according to the ACC/AHA guidelines. For patients with FTR who also have either pulmonary hypertension or right ventricular dilation or dysfunction, TV repair is an ACC/AHA class IIb recommendation.

In the European guidelines, patients with moderate secondary TR with a tricuspid annulus over 40 mm in diameter who are undergoing left-sided valve surgery, or who have right ventricular dilation or dysfunction, should undergo TV repair. This is a class IIa recommendation in the ESC/EACTS schema.

Dr. Bolling reported financial relationships with the Sorin Group, Medtronic, and Edwards Lifesciences.

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CHICAGO– Fixing the tricuspid valve should be part of left-sided heart operations in many cases of functional tricuspid regurgitation, but study data and international guidelines supporting the practice are too frequently ignored, said Steven Bolling, MD.

Speaking during Heart Valve Summit 2016, Dr. Bolling said that of the approximately four million U.S. individuals with mitral regurgitation, about 1.6 million, or 40%, have concomitant tricuspid regurgitation (TR). Yet, he said, only about 7,000 concomitant tricuspid valve (TV) repairs are performed in the 60,000 patients receiving mitral valve (MV) repair surgery annually, for a TV repair rate of less than 12%. “Tricuspid regurgitation is ignored,” said Dr. Bolling, a conference organizer and professor of surgery at the University of Michigan, Ann Arbor.

Dr. Allen C. Bolling
“When functional tricuspid regurgitation is fixed, the right ventricle gets better,” said Dr. Bolling, citing a study that showed favorable right ventricular remodeling after concomitant MV-TV repair.

A 2015 study followed 645 consecutive patients who underwent primary repair of degenerative mitral regurgitation. The patients who had concomitant TVR, he said, “had far less TR, better right ventricle function, and it’s safe. There was lower mortality and morbidity” (J Am Coll Cardiol. 2015 May 12;65[18]:1931-8).

Citing a study of 5,589 patients undergoing surgery for mitral valve regurgitation only, 16% of these had severe – grade 3-4+ – TR preoperatively. However, at discharge, 62% of those had severe residual TR. Despite a “good” mitral result, said Dr. Bolling, multiple studies dating back to the 1980s have demonstrated that surgical repair of just the mitral valve still results in functional tricuspid regurgitation (FTR) rates of up to 67%. “There’s no guarantee of FTR ‘getting better,’” said Dr. Bolling.

The problem lies fundamentally in the annular dilation and change of shape of the tricuspid annulus, and so these issues must be addressed for a good functional result, he said. This dilation and distortion has been shown to occur in up to 75% of all cases of MR (Circulation. 2006;114:1-492).

“Placing an ‘undersized’ tricuspid ring is actually restoring normal sizing to the annulus,” said Dr. Bolling. The normal tricuspid annular dimension is 2.8 cm, plus or minus 0.5 cm, he said. Patients fare better both in the immediate postoperative period and at follow-up with an “undersized” TV repair for FTR, he said.

And surgeons shouldn’t worry about stenosis with an “undersized” TV repair, he said. High school geometry shows that a 26-mm valve diameter yields an area of about 4 square cm, for a 2- to 3-mm gradient, said Dr. Bolling.

Detection of tricuspid regurgitation can itself be a tricky prospect, because tricuspid regurgitation is dynamic. “You should look for functional tricuspid regurgitation preoperatively,” said Dr. Bolling. “Under anesthesia, four-plus TR can become mild.” Accordingly, any significant intraoperative TR or a dilated annulus should be considered indications for tricuspid valve repair, he said.

Though adding TV repair to mitral surgery may add some complexity, it does not necessarily add risk, said Dr. Bolling, citing a study of 110 matched patients with FTR that found a trend toward lower 30-day mortality for combined repair, when compared to mitral repair only (2% versus 8.5%, P = .2).

However, the single-intervention group had a 40% rate of tricuspid progression compared to 5% when both valves were repaired, and the 5-year survival rate was higher for those who had the combined surgery (74% versus 45%; Ann Thorac Surg. 2009 Mar;87[3]:698-703).

According to American College of Cardiology/American Heart Association (ACC/AHA) guidelines for managing valvular heart disease, which were last updated in 2014, patients with severe TR who are undergoing left-sided valve surgery should have concomitant TV repair, a class I recommendation.

The European Society of Cardiology and the European Association for Cardio-Thoracic Surgery (ESC/EACTS) 2012 guidelines are in accord with the ACC/AHA for this population, also issuing a class I recommendation.

For patients with greater than mild TR who have tricuspid annular dilation or right-sided heart failure, TV repair is a class IIa recommendation, according to the ACC/AHA guidelines. For patients with FTR who also have either pulmonary hypertension or right ventricular dilation or dysfunction, TV repair is an ACC/AHA class IIb recommendation.

In the European guidelines, patients with moderate secondary TR with a tricuspid annulus over 40 mm in diameter who are undergoing left-sided valve surgery, or who have right ventricular dilation or dysfunction, should undergo TV repair. This is a class IIa recommendation in the ESC/EACTS schema.

Dr. Bolling reported financial relationships with the Sorin Group, Medtronic, and Edwards Lifesciences.

 

CHICAGO– Fixing the tricuspid valve should be part of left-sided heart operations in many cases of functional tricuspid regurgitation, but study data and international guidelines supporting the practice are too frequently ignored, said Steven Bolling, MD.

Speaking during Heart Valve Summit 2016, Dr. Bolling said that of the approximately four million U.S. individuals with mitral regurgitation, about 1.6 million, or 40%, have concomitant tricuspid regurgitation (TR). Yet, he said, only about 7,000 concomitant tricuspid valve (TV) repairs are performed in the 60,000 patients receiving mitral valve (MV) repair surgery annually, for a TV repair rate of less than 12%. “Tricuspid regurgitation is ignored,” said Dr. Bolling, a conference organizer and professor of surgery at the University of Michigan, Ann Arbor.

Dr. Allen C. Bolling
“When functional tricuspid regurgitation is fixed, the right ventricle gets better,” said Dr. Bolling, citing a study that showed favorable right ventricular remodeling after concomitant MV-TV repair.

A 2015 study followed 645 consecutive patients who underwent primary repair of degenerative mitral regurgitation. The patients who had concomitant TVR, he said, “had far less TR, better right ventricle function, and it’s safe. There was lower mortality and morbidity” (J Am Coll Cardiol. 2015 May 12;65[18]:1931-8).

Citing a study of 5,589 patients undergoing surgery for mitral valve regurgitation only, 16% of these had severe – grade 3-4+ – TR preoperatively. However, at discharge, 62% of those had severe residual TR. Despite a “good” mitral result, said Dr. Bolling, multiple studies dating back to the 1980s have demonstrated that surgical repair of just the mitral valve still results in functional tricuspid regurgitation (FTR) rates of up to 67%. “There’s no guarantee of FTR ‘getting better,’” said Dr. Bolling.

The problem lies fundamentally in the annular dilation and change of shape of the tricuspid annulus, and so these issues must be addressed for a good functional result, he said. This dilation and distortion has been shown to occur in up to 75% of all cases of MR (Circulation. 2006;114:1-492).

“Placing an ‘undersized’ tricuspid ring is actually restoring normal sizing to the annulus,” said Dr. Bolling. The normal tricuspid annular dimension is 2.8 cm, plus or minus 0.5 cm, he said. Patients fare better both in the immediate postoperative period and at follow-up with an “undersized” TV repair for FTR, he said.

And surgeons shouldn’t worry about stenosis with an “undersized” TV repair, he said. High school geometry shows that a 26-mm valve diameter yields an area of about 4 square cm, for a 2- to 3-mm gradient, said Dr. Bolling.

Detection of tricuspid regurgitation can itself be a tricky prospect, because tricuspid regurgitation is dynamic. “You should look for functional tricuspid regurgitation preoperatively,” said Dr. Bolling. “Under anesthesia, four-plus TR can become mild.” Accordingly, any significant intraoperative TR or a dilated annulus should be considered indications for tricuspid valve repair, he said.

Though adding TV repair to mitral surgery may add some complexity, it does not necessarily add risk, said Dr. Bolling, citing a study of 110 matched patients with FTR that found a trend toward lower 30-day mortality for combined repair, when compared to mitral repair only (2% versus 8.5%, P = .2).

However, the single-intervention group had a 40% rate of tricuspid progression compared to 5% when both valves were repaired, and the 5-year survival rate was higher for those who had the combined surgery (74% versus 45%; Ann Thorac Surg. 2009 Mar;87[3]:698-703).

According to American College of Cardiology/American Heart Association (ACC/AHA) guidelines for managing valvular heart disease, which were last updated in 2014, patients with severe TR who are undergoing left-sided valve surgery should have concomitant TV repair, a class I recommendation.

The European Society of Cardiology and the European Association for Cardio-Thoracic Surgery (ESC/EACTS) 2012 guidelines are in accord with the ACC/AHA for this population, also issuing a class I recommendation.

For patients with greater than mild TR who have tricuspid annular dilation or right-sided heart failure, TV repair is a class IIa recommendation, according to the ACC/AHA guidelines. For patients with FTR who also have either pulmonary hypertension or right ventricular dilation or dysfunction, TV repair is an ACC/AHA class IIb recommendation.

In the European guidelines, patients with moderate secondary TR with a tricuspid annulus over 40 mm in diameter who are undergoing left-sided valve surgery, or who have right ventricular dilation or dysfunction, should undergo TV repair. This is a class IIa recommendation in the ESC/EACTS schema.

Dr. Bolling reported financial relationships with the Sorin Group, Medtronic, and Edwards Lifesciences.

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AGA Patient INFO Center now offers gMed instructions

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The Patient INFO Center, AGA’s digital library of patient education, continues to grow and expand. As new topics and educational resources are added, there are also opportunities to enhance the experience of using the library to better connect with patients.

In addition to electronic health record systems Athena, Cerner, and EPIC, you can now integrate AGA’s patient education materials into gMed. Based on member feedback and popular demand, AGA created instructions with gMed consultants and tested them with members to ensure accuracy and ease of use.

Check out the newly added gMed instructions and everything else the Patient INFO Center has to offer.

Have thoughts on the Patient INFO Center? Email [email protected].
 

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The Patient INFO Center, AGA’s digital library of patient education, continues to grow and expand. As new topics and educational resources are added, there are also opportunities to enhance the experience of using the library to better connect with patients.

In addition to electronic health record systems Athena, Cerner, and EPIC, you can now integrate AGA’s patient education materials into gMed. Based on member feedback and popular demand, AGA created instructions with gMed consultants and tested them with members to ensure accuracy and ease of use.

Check out the newly added gMed instructions and everything else the Patient INFO Center has to offer.

Have thoughts on the Patient INFO Center? Email [email protected].
 

 

The Patient INFO Center, AGA’s digital library of patient education, continues to grow and expand. As new topics and educational resources are added, there are also opportunities to enhance the experience of using the library to better connect with patients.

In addition to electronic health record systems Athena, Cerner, and EPIC, you can now integrate AGA’s patient education materials into gMed. Based on member feedback and popular demand, AGA created instructions with gMed consultants and tested them with members to ensure accuracy and ease of use.

Check out the newly added gMed instructions and everything else the Patient INFO Center has to offer.

Have thoughts on the Patient INFO Center? Email [email protected].
 

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