Hematology Times

AML cells

The US Food and Drug Administration (FDA) has granted breakthrough therapy designation to quizartinib, an investigational FLT3 inhibitor, for the treatment of adults with relapsed/refractory FLT3-ITD acute myeloid leukemia (AML).

The FDA granted quizartinib breakthrough designation based on results from the phase 3 QuANTUM-R study, which were presented at the 23rd Congress of the European Hematology Association in June.

QuANTUM-R enrolled adults with FLT3-ITD AML (at least 3% FLT3-ITD allelic ratio) who had refractory disease or had relapsed within 6 months of their first complete remission.

Patients were randomized to receive once-daily treatment with quizartinib (n=245) or a salvage chemotherapy regimen (n=122)—low-dose cytarabine (LoDAC, n=29); combination mitoxantrone, etoposide, and cytarabine (MEC, n=40); or combination fludarabine, cytarabine, and idarubicin (FLAG-IDA, n=53).

Responders could proceed to hematopoietic stem cell transplant (HSCT), and those in the quizartinib arm could resume quizartinib after HSCT. Thirty-two percent of quizartinib-treated patients and 12% of the chemotherapy group went on to HSCT.

The median follow-up was 23.5 months. The efficacy results include all randomized patients.

The overall response rate was 69% in the quizartinib arm and 30% in the chemotherapy arm. The complete response (CR) rate was 4% and 1%, respectively; the rate of CR with incomplete platelet recovery was 4% and 0%, respectively; and the rate of CR with incomplete hematologic recovery was 40% and 26%, respectively.

The median overall survival was 6.2 months in the quizartinib arm and 4.7 months in the chemotherapy arm (hazard ratio=0.76, P=0.0177). The 1-year overall survival rate was 27% and 20%, respectively.

The median event-free survival was 6.0 weeks in the quizartinib arm and 3.7 weeks in the chemotherapy arm (hazard ratio=0.90, P=0.1071).

The safety results include only patients who received their assigned treatment—241 patients who received quizartinib and 94 who received salvage chemotherapy (22 on LoDAC, 25 on MEC, and 47 on FLAG-IDA).

Grade 3 or higher hematologic treatment-emergent adverse events occurring in at least 5% of patients (in the quizartinib and chemotherapy groups, respectively) included thrombocytopenia (35% and 34%), anemia (30% and 29%), neutropenia (32% and 25%), febrile neutropenia (31% and 21%), and leukopenia (17% and 16%).

Grade 3 or higher nonhematologic treatment-emergent adverse events occurring in at least 5% of patients (in the quizartinib and chemotherapy groups, respectively) included fatigue (8% and 1%), hypokalemia (12% and 9%), sepsis/septic shock (16% and 18%), dyspnea (5% for both), hypophosphatemia (5% for both), and pneumonia (12% and 9%).

Three percent of patients in the quizartinib arm had grade 3 QTcF prolongation, and 2 patients discontinued quizartinib due to QTcF prolongation.

About breakthrough designation

Breakthrough designation is intended to expedite the development and review of new treatments for serious or life-threatening conditions.

The designation entitles the company developing a therapy to more intensive FDA guidance on an efficient and accelerated development program, as well as eligibility for other actions to expedite FDA review, such as rolling submission and priority review.

To earn breakthrough designation, a treatment must show encouraging early clinical results demonstrating substantial improvement over available therapies with regard to a clinically significant endpoint, or it must fulfill an unmet need.

Other designations for quizartinib

In addition to breakthrough therapy designation, quizartinib has fast track and orphan drug designations from the FDA.

The FDA’s fast track development program is designed to expedite clinical development and submission of applications for products with the potential to treat serious or life-threatening conditions and address unmet medical needs.

Fast track designation facilitates frequent interactions with the FDA review team, including meetings to discuss the product’s development plan and written communications about issues such as trial design and use of biomarkers.

Products that receive fast track designation may be eligible for accelerated approval and priority review if relevant criteria are met. Such products may also be eligible for rolling review, which allows a developer to submit individual sections of a product’s application for review as they are ready, rather than waiting until all sections are complete.

The FDA grants orphan designation to products intended to treat, diagnose, or prevent diseases/disorders that affect fewer than 200,000 people in the US.

Orphan designation provides incentives for sponsors to develop products for rare diseases. This may include tax credits toward the cost of clinical trials, prescription drug user fee waivers, and 7 years of market exclusivity if the product is approved.

AML cells

The US Food and Drug Administration (FDA) has granted breakthrough therapy designation to quizartinib, an investigational FLT3 inhibitor, for the treatment of adults with relapsed/refractory FLT3-ITD acute myeloid leukemia (AML).

The FDA granted quizartinib breakthrough designation based on results from the phase 3 QuANTUM-R study, which were presented at the 23rd Congress of the European Hematology Association in June.

QuANTUM-R enrolled adults with FLT3-ITD AML (at least 3% FLT3-ITD allelic ratio) who had refractory disease or had relapsed within 6 months of their first complete remission.

Patients were randomized to receive once-daily treatment with quizartinib (n=245) or a salvage chemotherapy regimen (n=122)—low-dose cytarabine (LoDAC, n=29); combination mitoxantrone, etoposide, and cytarabine (MEC, n=40); or combination fludarabine, cytarabine, and idarubicin (FLAG-IDA, n=53).

Responders could proceed to hematopoietic stem cell transplant (HSCT), and those in the quizartinib arm could resume quizartinib after HSCT. Thirty-two percent of quizartinib-treated patients and 12% of the chemotherapy group went on to HSCT.

The median follow-up was 23.5 months. The efficacy results include all randomized patients.

The overall response rate was 69% in the quizartinib arm and 30% in the chemotherapy arm. The complete response (CR) rate was 4% and 1%, respectively; the rate of CR with incomplete platelet recovery was 4% and 0%, respectively; and the rate of CR with incomplete hematologic recovery was 40% and 26%, respectively.

The median overall survival was 6.2 months in the quizartinib arm and 4.7 months in the chemotherapy arm (hazard ratio=0.76, P=0.0177). The 1-year overall survival rate was 27% and 20%, respectively.

The median event-free survival was 6.0 weeks in the quizartinib arm and 3.7 weeks in the chemotherapy arm (hazard ratio=0.90, P=0.1071).

The safety results include only patients who received their assigned treatment—241 patients who received quizartinib and 94 who received salvage chemotherapy (22 on LoDAC, 25 on MEC, and 47 on FLAG-IDA).

Grade 3 or higher hematologic treatment-emergent adverse events occurring in at least 5% of patients (in the quizartinib and chemotherapy groups, respectively) included thrombocytopenia (35% and 34%), anemia (30% and 29%), neutropenia (32% and 25%), febrile neutropenia (31% and 21%), and leukopenia (17% and 16%).

Grade 3 or higher nonhematologic treatment-emergent adverse events occurring in at least 5% of patients (in the quizartinib and chemotherapy groups, respectively) included fatigue (8% and 1%), hypokalemia (12% and 9%), sepsis/septic shock (16% and 18%), dyspnea (5% for both), hypophosphatemia (5% for both), and pneumonia (12% and 9%).

Three percent of patients in the quizartinib arm had grade 3 QTcF prolongation, and 2 patients discontinued quizartinib due to QTcF prolongation.

About breakthrough designation

Breakthrough designation is intended to expedite the development and review of new treatments for serious or life-threatening conditions.

The designation entitles the company developing a therapy to more intensive FDA guidance on an efficient and accelerated development program, as well as eligibility for other actions to expedite FDA review, such as rolling submission and priority review.

To earn breakthrough designation, a treatment must show encouraging early clinical results demonstrating substantial improvement over available therapies with regard to a clinically significant endpoint, or it must fulfill an unmet need.

Other designations for quizartinib

In addition to breakthrough therapy designation, quizartinib has fast track and orphan drug designations from the FDA.

The FDA’s fast track development program is designed to expedite clinical development and submission of applications for products with the potential to treat serious or life-threatening conditions and address unmet medical needs.

Fast track designation facilitates frequent interactions with the FDA review team, including meetings to discuss the product’s development plan and written communications about issues such as trial design and use of biomarkers.

Products that receive fast track designation may be eligible for accelerated approval and priority review if relevant criteria are met. Such products may also be eligible for rolling review, which allows a developer to submit individual sections of a product’s application for review as they are ready, rather than waiting until all sections are complete.

The FDA grants orphan designation to products intended to treat, diagnose, or prevent diseases/disorders that affect fewer than 200,000 people in the US.

Orphan designation provides incentives for sponsors to develop products for rare diseases. This may include tax credits toward the cost of clinical trials, prescription drug user fee waivers, and 7 years of market exclusivity if the product is approved.

AML cells

The US Food and Drug Administration (FDA) has granted breakthrough therapy designation to quizartinib, an investigational FLT3 inhibitor, for the treatment of adults with relapsed/refractory FLT3-ITD acute myeloid leukemia (AML).

The FDA granted quizartinib breakthrough designation based on results from the phase 3 QuANTUM-R study, which were presented at the 23rd Congress of the European Hematology Association in June.

QuANTUM-R enrolled adults with FLT3-ITD AML (at least 3% FLT3-ITD allelic ratio) who had refractory disease or had relapsed within 6 months of their first complete remission.

Patients were randomized to receive once-daily treatment with quizartinib (n=245) or a salvage chemotherapy regimen (n=122)—low-dose cytarabine (LoDAC, n=29); combination mitoxantrone, etoposide, and cytarabine (MEC, n=40); or combination fludarabine, cytarabine, and idarubicin (FLAG-IDA, n=53).

Responders could proceed to hematopoietic stem cell transplant (HSCT), and those in the quizartinib arm could resume quizartinib after HSCT. Thirty-two percent of quizartinib-treated patients and 12% of the chemotherapy group went on to HSCT.

The median follow-up was 23.5 months. The efficacy results include all randomized patients.

The overall response rate was 69% in the quizartinib arm and 30% in the chemotherapy arm. The complete response (CR) rate was 4% and 1%, respectively; the rate of CR with incomplete platelet recovery was 4% and 0%, respectively; and the rate of CR with incomplete hematologic recovery was 40% and 26%, respectively.

The median overall survival was 6.2 months in the quizartinib arm and 4.7 months in the chemotherapy arm (hazard ratio=0.76, P=0.0177). The 1-year overall survival rate was 27% and 20%, respectively.

The median event-free survival was 6.0 weeks in the quizartinib arm and 3.7 weeks in the chemotherapy arm (hazard ratio=0.90, P=0.1071).

The safety results include only patients who received their assigned treatment—241 patients who received quizartinib and 94 who received salvage chemotherapy (22 on LoDAC, 25 on MEC, and 47 on FLAG-IDA).

Grade 3 or higher hematologic treatment-emergent adverse events occurring in at least 5% of patients (in the quizartinib and chemotherapy groups, respectively) included thrombocytopenia (35% and 34%), anemia (30% and 29%), neutropenia (32% and 25%), febrile neutropenia (31% and 21%), and leukopenia (17% and 16%).

Grade 3 or higher nonhematologic treatment-emergent adverse events occurring in at least 5% of patients (in the quizartinib and chemotherapy groups, respectively) included fatigue (8% and 1%), hypokalemia (12% and 9%), sepsis/septic shock (16% and 18%), dyspnea (5% for both), hypophosphatemia (5% for both), and pneumonia (12% and 9%).

Three percent of patients in the quizartinib arm had grade 3 QTcF prolongation, and 2 patients discontinued quizartinib due to QTcF prolongation.

About breakthrough designation

Breakthrough designation is intended to expedite the development and review of new treatments for serious or life-threatening conditions.

The designation entitles the company developing a therapy to more intensive FDA guidance on an efficient and accelerated development program, as well as eligibility for other actions to expedite FDA review, such as rolling submission and priority review.

To earn breakthrough designation, a treatment must show encouraging early clinical results demonstrating substantial improvement over available therapies with regard to a clinically significant endpoint, or it must fulfill an unmet need.

Other designations for quizartinib

In addition to breakthrough therapy designation, quizartinib has fast track and orphan drug designations from the FDA.

The FDA’s fast track development program is designed to expedite clinical development and submission of applications for products with the potential to treat serious or life-threatening conditions and address unmet medical needs.

Fast track designation facilitates frequent interactions with the FDA review team, including meetings to discuss the product’s development plan and written communications about issues such as trial design and use of biomarkers.

Products that receive fast track designation may be eligible for accelerated approval and priority review if relevant criteria are met. Such products may also be eligible for rolling review, which allows a developer to submit individual sections of a product’s application for review as they are ready, rather than waiting until all sections are complete.

The FDA grants orphan designation to products intended to treat, diagnose, or prevent diseases/disorders that affect fewer than 200,000 people in the US.

Orphan designation provides incentives for sponsors to develop products for rare diseases. This may include tax credits toward the cost of clinical trials, prescription drug user fee waivers, and 7 years of market exclusivity if the product is approved.

Image by Tom Ellenberger

New research suggests the Fanconi anemia (FA) pathway plays a key role in repairing double-strand breaks (DSBs) created by CRISPR-Cas9 genome editing.

Researchers said they found that Cas9-induced single-strand template repair requires the FA pathway, and the protein FANCD2 localizes to Cas9-induced DSBs.

The team said this research provides insight into why CRISPR-Cas9 does not produce equal success in all cells.

Furthermore, the work might help researchers boost the efficiency with which cells insert new DNA into the genome and generally tweak CRISPR-Cas9 editing to get the desired outcome.

“If you want to treat sickle cell anemia, your chances of success are inextricably tied to the efficiency with which you can replace the mutated sickle cell gene with the correct one,” said study author Chris Richardson, PhD, formerly of the University of California, Berkeley, but now at Spotlight Therapeutics in Hayward, California.

“If you harvest a million cells from a patient and you have a 10% insertion rate, that is not as good as if you have 30% to 40%. Being able to manipulate those cells to increase the frequency of this process, called homology-directed repair, is exciting.”

Dr Richardson and his colleagues described this work in Nature Genetics.

CRISPR relies on DNA repair

The researchers noted that CRISPR-Cas9 creates targeted DSBs, and it’s up to the cell to repair the DNA.

This can happen in 2 ways. Enzymes can stitch the dangling ends back together, which often results in one or more bases being added or deleted, disrupting the function of the gene.

Alternatively, other enzymes can patch the break with a single strand of DNA that matches the DNA sequence upstream and downstream of the cut. A complementary DNA strand is created to complete the double-strand repair.

The former method, called non-homologous end-joining, appears to be the most common outcome after CRISPR cutting.

The latter method, homology-directed repair, happens more frequently in some cells than others and requires the presence of DNA that can be used to patch the break. Researchers often supply a single-stranded piece of DNA and hope the cell uses it to replace the faulty sequence with the new one.

Both processes are a bit mysterious, however, and no one knows why some cells readily patch in DNA while others do so infrequently.

“The enthusiasm for using CRISPR-Cas9 for medical or synthetic biology applications is great, but no one really knows what happens after you put it into cells,” Dr Richardson said. “It goes and creates these breaks, and you count on the cells to fix them, but people don’t really understand how that process works.”

To find out which DNA repair enzymes are critical to homology-directed repair after CRISPR cutting, Dr Richardson and his colleagues used a technique called CRISPR interference. They knocked out, one at a time, more than 2000 genes known or suspected to be involved in DNA repair.

The researchers were surprised to find that many of the genes that proved important—homology-directed repair dropped dramatically when they were silenced—were involved in the FA pathway.

FA pathway

The FA pathway was largely understood to repair DNA interstrand crosslinks, where a nucleotide on one strand of DNA bonds tightly with a nucleotide on the adjacent strand, interfering with DNA replication and often killing the cell.

“Based on our work, we believe that the Fanconi anemia pathway plays a major role in fixing other types of lesions as well, but is best understood as the pathway that repairs double-strand breaks,” Dr Richardson said. “After Cas9 editing, the Fanconi anemia pathway is required if you want to insert new DNA.”

The importance of the FA pathway in repairing DSBs casts doubt on some planned CRISPR treatments for Fanconi anemia itself.

Without an active FA pathway, cells may not be able to replace their mutated genes with normal genes after Cas9 makes a cut. In fact, the activity level of the FA pathway may affect how efficiently CRISPR can insert DNA in a specific cell.

The researchers concluded that, while end-joining is the default repair mechanism after a DSB, the FA pathway competes with it, and that higher activity results in more homology-directed repair and less end-joining.

Dr Richardson and his colleagues also found that 1 of the 21 proteins in the FA pathway, FANCD2, always homes in on the site of the DSB created by CRISPR-Cas9. This suggests FANCD2 plays an important role in regulating the insertion of new DNA at the cut site.

The researchers therefore believe FANCD2 could be tweaked to boost the frequency with which a cell inserts DNA via homology-directed repair.

“Also, since FANCD2 localizes to the site of Cas9 breaks, you can use FANCD2 to map where Cas9 is cutting in any cell type,” Dr Richardson said. “If you edit a population of cells and you want to know where the on- and off-target cuts are, you can just map where FANCD2 was found in the genome and you can find the cuts.”

Image by Tom Ellenberger

New research suggests the Fanconi anemia (FA) pathway plays a key role in repairing double-strand breaks (DSBs) created by CRISPR-Cas9 genome editing.

Researchers said they found that Cas9-induced single-strand template repair requires the FA pathway, and the protein FANCD2 localizes to Cas9-induced DSBs.

The team said this research provides insight into why CRISPR-Cas9 does not produce equal success in all cells.

Furthermore, the work might help researchers boost the efficiency with which cells insert new DNA into the genome and generally tweak CRISPR-Cas9 editing to get the desired outcome.

“If you want to treat sickle cell anemia, your chances of success are inextricably tied to the efficiency with which you can replace the mutated sickle cell gene with the correct one,” said study author Chris Richardson, PhD, formerly of the University of California, Berkeley, but now at Spotlight Therapeutics in Hayward, California.

“If you harvest a million cells from a patient and you have a 10% insertion rate, that is not as good as if you have 30% to 40%. Being able to manipulate those cells to increase the frequency of this process, called homology-directed repair, is exciting.”

Dr Richardson and his colleagues described this work in Nature Genetics.

CRISPR relies on DNA repair

The researchers noted that CRISPR-Cas9 creates targeted DSBs, and it’s up to the cell to repair the DNA.

This can happen in 2 ways. Enzymes can stitch the dangling ends back together, which often results in one or more bases being added or deleted, disrupting the function of the gene.

Alternatively, other enzymes can patch the break with a single strand of DNA that matches the DNA sequence upstream and downstream of the cut. A complementary DNA strand is created to complete the double-strand repair.

The former method, called non-homologous end-joining, appears to be the most common outcome after CRISPR cutting.

The latter method, homology-directed repair, happens more frequently in some cells than others and requires the presence of DNA that can be used to patch the break. Researchers often supply a single-stranded piece of DNA and hope the cell uses it to replace the faulty sequence with the new one.

Both processes are a bit mysterious, however, and no one knows why some cells readily patch in DNA while others do so infrequently.

“The enthusiasm for using CRISPR-Cas9 for medical or synthetic biology applications is great, but no one really knows what happens after you put it into cells,” Dr Richardson said. “It goes and creates these breaks, and you count on the cells to fix them, but people don’t really understand how that process works.”

To find out which DNA repair enzymes are critical to homology-directed repair after CRISPR cutting, Dr Richardson and his colleagues used a technique called CRISPR interference. They knocked out, one at a time, more than 2000 genes known or suspected to be involved in DNA repair.

The researchers were surprised to find that many of the genes that proved important—homology-directed repair dropped dramatically when they were silenced—were involved in the FA pathway.

FA pathway

The FA pathway was largely understood to repair DNA interstrand crosslinks, where a nucleotide on one strand of DNA bonds tightly with a nucleotide on the adjacent strand, interfering with DNA replication and often killing the cell.

“Based on our work, we believe that the Fanconi anemia pathway plays a major role in fixing other types of lesions as well, but is best understood as the pathway that repairs double-strand breaks,” Dr Richardson said. “After Cas9 editing, the Fanconi anemia pathway is required if you want to insert new DNA.”

The importance of the FA pathway in repairing DSBs casts doubt on some planned CRISPR treatments for Fanconi anemia itself.

Without an active FA pathway, cells may not be able to replace their mutated genes with normal genes after Cas9 makes a cut. In fact, the activity level of the FA pathway may affect how efficiently CRISPR can insert DNA in a specific cell.

The researchers concluded that, while end-joining is the default repair mechanism after a DSB, the FA pathway competes with it, and that higher activity results in more homology-directed repair and less end-joining.

Dr Richardson and his colleagues also found that 1 of the 21 proteins in the FA pathway, FANCD2, always homes in on the site of the DSB created by CRISPR-Cas9. This suggests FANCD2 plays an important role in regulating the insertion of new DNA at the cut site.

The researchers therefore believe FANCD2 could be tweaked to boost the frequency with which a cell inserts DNA via homology-directed repair.

“Also, since FANCD2 localizes to the site of Cas9 breaks, you can use FANCD2 to map where Cas9 is cutting in any cell type,” Dr Richardson said. “If you edit a population of cells and you want to know where the on- and off-target cuts are, you can just map where FANCD2 was found in the genome and you can find the cuts.”

Image by Tom Ellenberger

New research suggests the Fanconi anemia (FA) pathway plays a key role in repairing double-strand breaks (DSBs) created by CRISPR-Cas9 genome editing.

Researchers said they found that Cas9-induced single-strand template repair requires the FA pathway, and the protein FANCD2 localizes to Cas9-induced DSBs.

The team said this research provides insight into why CRISPR-Cas9 does not produce equal success in all cells.

Furthermore, the work might help researchers boost the efficiency with which cells insert new DNA into the genome and generally tweak CRISPR-Cas9 editing to get the desired outcome.

“If you want to treat sickle cell anemia, your chances of success are inextricably tied to the efficiency with which you can replace the mutated sickle cell gene with the correct one,” said study author Chris Richardson, PhD, formerly of the University of California, Berkeley, but now at Spotlight Therapeutics in Hayward, California.

“If you harvest a million cells from a patient and you have a 10% insertion rate, that is not as good as if you have 30% to 40%. Being able to manipulate those cells to increase the frequency of this process, called homology-directed repair, is exciting.”

Dr Richardson and his colleagues described this work in Nature Genetics.

CRISPR relies on DNA repair

The researchers noted that CRISPR-Cas9 creates targeted DSBs, and it’s up to the cell to repair the DNA.

This can happen in 2 ways. Enzymes can stitch the dangling ends back together, which often results in one or more bases being added or deleted, disrupting the function of the gene.

Alternatively, other enzymes can patch the break with a single strand of DNA that matches the DNA sequence upstream and downstream of the cut. A complementary DNA strand is created to complete the double-strand repair.

The former method, called non-homologous end-joining, appears to be the most common outcome after CRISPR cutting.

The latter method, homology-directed repair, happens more frequently in some cells than others and requires the presence of DNA that can be used to patch the break. Researchers often supply a single-stranded piece of DNA and hope the cell uses it to replace the faulty sequence with the new one.

Both processes are a bit mysterious, however, and no one knows why some cells readily patch in DNA while others do so infrequently.

“The enthusiasm for using CRISPR-Cas9 for medical or synthetic biology applications is great, but no one really knows what happens after you put it into cells,” Dr Richardson said. “It goes and creates these breaks, and you count on the cells to fix them, but people don’t really understand how that process works.”

To find out which DNA repair enzymes are critical to homology-directed repair after CRISPR cutting, Dr Richardson and his colleagues used a technique called CRISPR interference. They knocked out, one at a time, more than 2000 genes known or suspected to be involved in DNA repair.

The researchers were surprised to find that many of the genes that proved important—homology-directed repair dropped dramatically when they were silenced—were involved in the FA pathway.

FA pathway

The FA pathway was largely understood to repair DNA interstrand crosslinks, where a nucleotide on one strand of DNA bonds tightly with a nucleotide on the adjacent strand, interfering with DNA replication and often killing the cell.

“Based on our work, we believe that the Fanconi anemia pathway plays a major role in fixing other types of lesions as well, but is best understood as the pathway that repairs double-strand breaks,” Dr Richardson said. “After Cas9 editing, the Fanconi anemia pathway is required if you want to insert new DNA.”

The importance of the FA pathway in repairing DSBs casts doubt on some planned CRISPR treatments for Fanconi anemia itself.

Without an active FA pathway, cells may not be able to replace their mutated genes with normal genes after Cas9 makes a cut. In fact, the activity level of the FA pathway may affect how efficiently CRISPR can insert DNA in a specific cell.

The researchers concluded that, while end-joining is the default repair mechanism after a DSB, the FA pathway competes with it, and that higher activity results in more homology-directed repair and less end-joining.

Dr Richardson and his colleagues also found that 1 of the 21 proteins in the FA pathway, FANCD2, always homes in on the site of the DSB created by CRISPR-Cas9. This suggests FANCD2 plays an important role in regulating the insertion of new DNA at the cut site.

The researchers therefore believe FANCD2 could be tweaked to boost the frequency with which a cell inserts DNA via homology-directed repair.

“Also, since FANCD2 localizes to the site of Cas9 breaks, you can use FANCD2 to map where Cas9 is cutting in any cell type,” Dr Richardson said. “If you edit a population of cells and you want to know where the on- and off-target cuts are, you can just map where FANCD2 was found in the genome and you can find the cuts.”

Photo from Flickr

The US Food and Drug Administration (FDA) has granted orphan drug designation to SRF231 for the treatment of multiple myeloma (MM).

SRF231 is a fully human antibody that inhibits the activity of CD47, a protein that is overexpressed on many cancer cells and prevents them from being engulfed and eliminated by macrophages.

Surface Oncology, the company developing SRF231, is currently conducting a phase 1 trial (NCT03512340) of SRF231 in patients with solid tumors and hematologic malignancies.

Preclinical research on SRF231 was presented at the 2016 ASH Annual Meeting.

SRF231 demonstrated “potent” activity against hematologic malignancies, according to researchers.

The team said SRF231 promoted macrophage-mediated phagocytic clearance of several hematologic primary tumor samples and cell lines in vitro.

SRF231 also demonstrated activity in murine xenograft models of hematologic malignancies. Specifically, the researchers observed “profound tumor growth inhibition” in models of MM, diffuse large B-cell lymphoma, and Burkitt lymphoma.

The team said SRF231 demonstrated activity when given alone or in combination with opsonizing antibodies.

Results also showed that SRF231 did not induce hemagglutination or phagocytosis of red blood cells in vitro.

About orphan designation

The FDA grants orphan designation to products intended to treat, diagnose, or prevent diseases/disorders that affect fewer than 200,000 people in the US.

Orphan designation provides incentives for sponsors to develop products for rare diseases. This may include tax credits toward the cost of clinical trials, prescription drug user fee waivers, and 7 years of market exclusivity if the product is approved.

Photo from Flickr

The US Food and Drug Administration (FDA) has granted orphan drug designation to SRF231 for the treatment of multiple myeloma (MM).

SRF231 is a fully human antibody that inhibits the activity of CD47, a protein that is overexpressed on many cancer cells and prevents them from being engulfed and eliminated by macrophages.

Surface Oncology, the company developing SRF231, is currently conducting a phase 1 trial (NCT03512340) of SRF231 in patients with solid tumors and hematologic malignancies.

Preclinical research on SRF231 was presented at the 2016 ASH Annual Meeting.

SRF231 demonstrated “potent” activity against hematologic malignancies, according to researchers.

The team said SRF231 promoted macrophage-mediated phagocytic clearance of several hematologic primary tumor samples and cell lines in vitro.

SRF231 also demonstrated activity in murine xenograft models of hematologic malignancies. Specifically, the researchers observed “profound tumor growth inhibition” in models of MM, diffuse large B-cell lymphoma, and Burkitt lymphoma.

The team said SRF231 demonstrated activity when given alone or in combination with opsonizing antibodies.

Results also showed that SRF231 did not induce hemagglutination or phagocytosis of red blood cells in vitro.

About orphan designation

The FDA grants orphan designation to products intended to treat, diagnose, or prevent diseases/disorders that affect fewer than 200,000 people in the US.

Orphan designation provides incentives for sponsors to develop products for rare diseases. This may include tax credits toward the cost of clinical trials, prescription drug user fee waivers, and 7 years of market exclusivity if the product is approved.

Photo from Flickr

The US Food and Drug Administration (FDA) has granted orphan drug designation to SRF231 for the treatment of multiple myeloma (MM).

SRF231 is a fully human antibody that inhibits the activity of CD47, a protein that is overexpressed on many cancer cells and prevents them from being engulfed and eliminated by macrophages.

Surface Oncology, the company developing SRF231, is currently conducting a phase 1 trial (NCT03512340) of SRF231 in patients with solid tumors and hematologic malignancies.

Preclinical research on SRF231 was presented at the 2016 ASH Annual Meeting.

SRF231 demonstrated “potent” activity against hematologic malignancies, according to researchers.

The team said SRF231 promoted macrophage-mediated phagocytic clearance of several hematologic primary tumor samples and cell lines in vitro.

SRF231 also demonstrated activity in murine xenograft models of hematologic malignancies. Specifically, the researchers observed “profound tumor growth inhibition” in models of MM, diffuse large B-cell lymphoma, and Burkitt lymphoma.

The team said SRF231 demonstrated activity when given alone or in combination with opsonizing antibodies.

Results also showed that SRF231 did not induce hemagglutination or phagocytosis of red blood cells in vitro.

About orphan designation

The FDA grants orphan designation to products intended to treat, diagnose, or prevent diseases/disorders that affect fewer than 200,000 people in the US.

Orphan designation provides incentives for sponsors to develop products for rare diseases. This may include tax credits toward the cost of clinical trials, prescription drug user fee waivers, and 7 years of market exclusivity if the product is approved.

Micrograph showing thalassemia

The European Medicines Agency’s Committee for Medicinal Products for Human Use (CHMP) has recommended approval for Deferiprone Lipomed to treat iron overload in patients with thalassemia major.

Deferiprone Lipomed is a generic version of the iron chelating agent Ferriprox, which has been authorized in the European Union since August 1999.

According to the CHMP, studies have shown that Deferiprone Lipomed is of satisfactory quality and bioequivalent to Ferriprox.

The CHMP’s recommendation for Deferiprone Lipomed will be reviewed by the European Commission, which has the authority to approve medicines for use in the European Union, Norway, Iceland, and Liechtenstein.

The European Commission usually makes a decision within 67 days of the CHMP’s recommendation.

If approved, Deferiprone Lipomed will be available as 500-mg film-coated tablets.

The drug will be authorized for the following uses:

• As monotherapy to treat iron overload in patients with thalassemia major when current chelation therapy is contraindicated or inadequate
• In combination with another chelator in patients with thalassemia major when monotherapy with any iron chelator is ineffective or when prevention or treatment of life-threatening consequences of iron overload justifies rapid or intensive correction.

According to the prescribing information for Ferriprox, the combination of iron chelators should be considered on a case-by-case basis, and patients should be monitored for response and adverse events.

Fatalities and life-threatening situations (caused by agranulocytosis) have been reported with the combination of deferiprone and deferoxamine.

Combination therapy is not recommended when monotherapy with either chelator is adequate or when serum ferritin falls below 500 μg/l. Additionally, there are limited data on the combined use of Ferriprox and deferasirox.

The applicant for Deferiprone Lipomed is Lipomed GmbH.

Micrograph showing thalassemia

The European Medicines Agency’s Committee for Medicinal Products for Human Use (CHMP) has recommended approval for Deferiprone Lipomed to treat iron overload in patients with thalassemia major.

Deferiprone Lipomed is a generic version of the iron chelating agent Ferriprox, which has been authorized in the European Union since August 1999.

According to the CHMP, studies have shown that Deferiprone Lipomed is of satisfactory quality and bioequivalent to Ferriprox.

The CHMP’s recommendation for Deferiprone Lipomed will be reviewed by the European Commission, which has the authority to approve medicines for use in the European Union, Norway, Iceland, and Liechtenstein.

The European Commission usually makes a decision within 67 days of the CHMP’s recommendation.

If approved, Deferiprone Lipomed will be available as 500-mg film-coated tablets.

The drug will be authorized for the following uses:

• As monotherapy to treat iron overload in patients with thalassemia major when current chelation therapy is contraindicated or inadequate
• In combination with another chelator in patients with thalassemia major when monotherapy with any iron chelator is ineffective or when prevention or treatment of life-threatening consequences of iron overload justifies rapid or intensive correction.

According to the prescribing information for Ferriprox, the combination of iron chelators should be considered on a case-by-case basis, and patients should be monitored for response and adverse events.

Fatalities and life-threatening situations (caused by agranulocytosis) have been reported with the combination of deferiprone and deferoxamine.

Combination therapy is not recommended when monotherapy with either chelator is adequate or when serum ferritin falls below 500 μg/l. Additionally, there are limited data on the combined use of Ferriprox and deferasirox.

The applicant for Deferiprone Lipomed is Lipomed GmbH.

Micrograph showing thalassemia

The European Medicines Agency’s Committee for Medicinal Products for Human Use (CHMP) has recommended approval for Deferiprone Lipomed to treat iron overload in patients with thalassemia major.

Deferiprone Lipomed is a generic version of the iron chelating agent Ferriprox, which has been authorized in the European Union since August 1999.

According to the CHMP, studies have shown that Deferiprone Lipomed is of satisfactory quality and bioequivalent to Ferriprox.

The CHMP’s recommendation for Deferiprone Lipomed will be reviewed by the European Commission, which has the authority to approve medicines for use in the European Union, Norway, Iceland, and Liechtenstein.

The European Commission usually makes a decision within 67 days of the CHMP’s recommendation.

If approved, Deferiprone Lipomed will be available as 500-mg film-coated tablets.

The drug will be authorized for the following uses:

• As monotherapy to treat iron overload in patients with thalassemia major when current chelation therapy is contraindicated or inadequate
• In combination with another chelator in patients with thalassemia major when monotherapy with any iron chelator is ineffective or when prevention or treatment of life-threatening consequences of iron overload justifies rapid or intensive correction.

According to the prescribing information for Ferriprox, the combination of iron chelators should be considered on a case-by-case basis, and patients should be monitored for response and adverse events.

Fatalities and life-threatening situations (caused by agranulocytosis) have been reported with the combination of deferiprone and deferoxamine.

Combination therapy is not recommended when monotherapy with either chelator is adequate or when serum ferritin falls below 500 μg/l. Additionally, there are limited data on the combined use of Ferriprox and deferasirox.

The applicant for Deferiprone Lipomed is Lipomed GmbH.

Photo courtesy of Celgene

The European Medicines Agency’s Committee for Medicinal Products for Human Use (CHMP) has recommended approval for Lenalidomide Accord as a treatment for multiple myeloma (MM).

Lenalidomide Accord is a generic version of the immunomodulatory agent Revlimid, which has been authorized in the European Union since June 2007.

The CHMP said studies have demonstrated the satisfactory quality of Lenalidomide Accord and its bioequivalence to Revlimid.

The CHMP’s recommendation for Lenalidomide Accord will be reviewed by the European Commission, which has the authority to approve medicines for use in the European Union, Norway, Iceland, and Liechtenstein.

The European Commission usually makes a decision within 67 days of the CHMP’s recommendation.

If approved, Lenalidomide Accord will be available as capsules (2.5 mg, 5 mg, 7.5 mg, 10 mg, 15 mg, 20 mg, and 25 mg) and authorized for the following uses:

• As monotherapy for the maintenance treatment of adults with newly diagnosed MM who have undergone autologous stem cell transplant
• In combination with melphalan and prednisone followed by lenalidomide maintenance in adults with previously untreated MM who are not eligible for transplant
• In combination with dexamethasone to treat MM in adults who have received at least 1 prior therapy.

The applicant for Lenalidomide Accord is Accord Healthcare Limited.

Photo courtesy of Celgene

The European Medicines Agency’s Committee for Medicinal Products for Human Use (CHMP) has recommended approval for Lenalidomide Accord as a treatment for multiple myeloma (MM).

Lenalidomide Accord is a generic version of the immunomodulatory agent Revlimid, which has been authorized in the European Union since June 2007.

The CHMP said studies have demonstrated the satisfactory quality of Lenalidomide Accord and its bioequivalence to Revlimid.

The CHMP’s recommendation for Lenalidomide Accord will be reviewed by the European Commission, which has the authority to approve medicines for use in the European Union, Norway, Iceland, and Liechtenstein.

The European Commission usually makes a decision within 67 days of the CHMP’s recommendation.

If approved, Lenalidomide Accord will be available as capsules (2.5 mg, 5 mg, 7.5 mg, 10 mg, 15 mg, 20 mg, and 25 mg) and authorized for the following uses:

• As monotherapy for the maintenance treatment of adults with newly diagnosed MM who have undergone autologous stem cell transplant
• In combination with melphalan and prednisone followed by lenalidomide maintenance in adults with previously untreated MM who are not eligible for transplant
• In combination with dexamethasone to treat MM in adults who have received at least 1 prior therapy.

The applicant for Lenalidomide Accord is Accord Healthcare Limited.

Photo courtesy of Celgene

The European Medicines Agency’s Committee for Medicinal Products for Human Use (CHMP) has recommended approval for Lenalidomide Accord as a treatment for multiple myeloma (MM).

Lenalidomide Accord is a generic version of the immunomodulatory agent Revlimid, which has been authorized in the European Union since June 2007.

The CHMP said studies have demonstrated the satisfactory quality of Lenalidomide Accord and its bioequivalence to Revlimid.

The CHMP’s recommendation for Lenalidomide Accord will be reviewed by the European Commission, which has the authority to approve medicines for use in the European Union, Norway, Iceland, and Liechtenstein.

The European Commission usually makes a decision within 67 days of the CHMP’s recommendation.

If approved, Lenalidomide Accord will be available as capsules (2.5 mg, 5 mg, 7.5 mg, 10 mg, 15 mg, 20 mg, and 25 mg) and authorized for the following uses:

• As monotherapy for the maintenance treatment of adults with newly diagnosed MM who have undergone autologous stem cell transplant
• In combination with melphalan and prednisone followed by lenalidomide maintenance in adults with previously untreated MM who are not eligible for transplant
• In combination with dexamethasone to treat MM in adults who have received at least 1 prior therapy.

The applicant for Lenalidomide Accord is Accord Healthcare Limited.

Photo courtesy of Janssen

The European Medicines Agency’s Committee for Medicinal Products for Human Use (CHMP) has recommended broadening the existing marketing authorization for daratumumab (Darzalex).

The CHMP is recommending approval for daratumumab in combination with bortezomib, melphalan, and prednisone (VMP) for the treatment of adults with newly diagnosed multiple myeloma (MM) who are ineligible for autologous stem cell transplant.

The CHMP’s recommendation will be reviewed by the European Commission (EC), which has the authority to approve medicines for use in the European Union, Norway, Iceland, and Liechtenstein.

The EC usually makes a decision within 67 days of the CHMP’s recommendation.

Daratumumab already has EC approval for the following indications:

• For use in combination with lenalidomide and dexamethasone, or bortezomib and dexamethasone, to treat adults with MM who have received at least 1 prior therapy
• As monotherapy for adults with relapsed and refractory MM whose prior therapy included a proteasome inhibitor and an immunomodulatory agent and who have demonstrated disease progression on their last therapy.

The CHMP’s recommendation to expand the existing marketing authorization for daratumumab is based on results from the phase 3 ALCYONE (MMY3007) study.

Results from this study were presented at the 2017 ASH Annual Meeting and simultaneously published in NEJM.

ALCYONE enrolled 706 patients with newly diagnosed MM who were not eligible for high-dose chemotherapy with autologous stem cell transplant. Patients were randomized to receive VMP or daratumumab plus VMP (D-VMP).

The overall response rates were 91% in the D-VMP arm and 74% in the VMP arm (P<0.0001). Rates of complete response were 43% and 24%, respectively. Rates of minimal residual disease negativity were 22% and 6%, respectively.

The median progression-free survival (PFS) was not reached in the D-VMP arm and was 18.1 months in the VMP arm. The 12-month PFS was 87% and 76%, respectively. The 18-month PFS was 72% and 50%, respectively.

The most common treatment-emergent adverse events (in the D-VMP and VMP arms, respectively) were neutropenia (50% and 53%), thrombocytopenia (49% and 54%), anemia (28% and 38%), peripheral sensory neuropathy (28% and 34%), upper respiratory tract infection (26% and 14%), diarrhea (24% and 25%), pyrexia (23% and 21%), and nausea (21% and 22%).

Infusion-related reactions occurred in 28% of patients in the D-VMP arm and 0% of those in the VMP arm.

The rate of grade 3/4 infections was higher in the D-VMP arm than the VMP arm—23% and 15%, respectively. In both arms, most infections resolved.

The most common grade 3/4 treatment-emergent adverse events (in the D-VMP and VMP arms, respectively) were neutropenia (40% and 39%), thrombocytopenia (34% and 38%), and anemia (16% and 20%).

The rate of discontinuation due to adverse events was 5% in the D-VMP arm and 9% in the VMP arm.

Photo courtesy of Janssen

The European Medicines Agency’s Committee for Medicinal Products for Human Use (CHMP) has recommended broadening the existing marketing authorization for daratumumab (Darzalex).

The CHMP is recommending approval for daratumumab in combination with bortezomib, melphalan, and prednisone (VMP) for the treatment of adults with newly diagnosed multiple myeloma (MM) who are ineligible for autologous stem cell transplant.

The CHMP’s recommendation will be reviewed by the European Commission (EC), which has the authority to approve medicines for use in the European Union, Norway, Iceland, and Liechtenstein.

The EC usually makes a decision within 67 days of the CHMP’s recommendation.

Daratumumab already has EC approval for the following indications:

• For use in combination with lenalidomide and dexamethasone, or bortezomib and dexamethasone, to treat adults with MM who have received at least 1 prior therapy
• As monotherapy for adults with relapsed and refractory MM whose prior therapy included a proteasome inhibitor and an immunomodulatory agent and who have demonstrated disease progression on their last therapy.

The CHMP’s recommendation to expand the existing marketing authorization for daratumumab is based on results from the phase 3 ALCYONE (MMY3007) study.

Results from this study were presented at the 2017 ASH Annual Meeting and simultaneously published in NEJM.

ALCYONE enrolled 706 patients with newly diagnosed MM who were not eligible for high-dose chemotherapy with autologous stem cell transplant. Patients were randomized to receive VMP or daratumumab plus VMP (D-VMP).

The overall response rates were 91% in the D-VMP arm and 74% in the VMP arm (P<0.0001). Rates of complete response were 43% and 24%, respectively. Rates of minimal residual disease negativity were 22% and 6%, respectively.

The median progression-free survival (PFS) was not reached in the D-VMP arm and was 18.1 months in the VMP arm. The 12-month PFS was 87% and 76%, respectively. The 18-month PFS was 72% and 50%, respectively.

The most common treatment-emergent adverse events (in the D-VMP and VMP arms, respectively) were neutropenia (50% and 53%), thrombocytopenia (49% and 54%), anemia (28% and 38%), peripheral sensory neuropathy (28% and 34%), upper respiratory tract infection (26% and 14%), diarrhea (24% and 25%), pyrexia (23% and 21%), and nausea (21% and 22%).

Infusion-related reactions occurred in 28% of patients in the D-VMP arm and 0% of those in the VMP arm.

The rate of grade 3/4 infections was higher in the D-VMP arm than the VMP arm—23% and 15%, respectively. In both arms, most infections resolved.

The most common grade 3/4 treatment-emergent adverse events (in the D-VMP and VMP arms, respectively) were neutropenia (40% and 39%), thrombocytopenia (34% and 38%), and anemia (16% and 20%).

The rate of discontinuation due to adverse events was 5% in the D-VMP arm and 9% in the VMP arm.

Photo courtesy of Janssen

The European Medicines Agency’s Committee for Medicinal Products for Human Use (CHMP) has recommended broadening the existing marketing authorization for daratumumab (Darzalex).

The CHMP is recommending approval for daratumumab in combination with bortezomib, melphalan, and prednisone (VMP) for the treatment of adults with newly diagnosed multiple myeloma (MM) who are ineligible for autologous stem cell transplant.

The CHMP’s recommendation will be reviewed by the European Commission (EC), which has the authority to approve medicines for use in the European Union, Norway, Iceland, and Liechtenstein.

The EC usually makes a decision within 67 days of the CHMP’s recommendation.

Daratumumab already has EC approval for the following indications:

• For use in combination with lenalidomide and dexamethasone, or bortezomib and dexamethasone, to treat adults with MM who have received at least 1 prior therapy
• As monotherapy for adults with relapsed and refractory MM whose prior therapy included a proteasome inhibitor and an immunomodulatory agent and who have demonstrated disease progression on their last therapy.

The CHMP’s recommendation to expand the existing marketing authorization for daratumumab is based on results from the phase 3 ALCYONE (MMY3007) study.

Results from this study were presented at the 2017 ASH Annual Meeting and simultaneously published in NEJM.

ALCYONE enrolled 706 patients with newly diagnosed MM who were not eligible for high-dose chemotherapy with autologous stem cell transplant. Patients were randomized to receive VMP or daratumumab plus VMP (D-VMP).

The overall response rates were 91% in the D-VMP arm and 74% in the VMP arm (P<0.0001). Rates of complete response were 43% and 24%, respectively. Rates of minimal residual disease negativity were 22% and 6%, respectively.

The median progression-free survival (PFS) was not reached in the D-VMP arm and was 18.1 months in the VMP arm. The 12-month PFS was 87% and 76%, respectively. The 18-month PFS was 72% and 50%, respectively.

The most common treatment-emergent adverse events (in the D-VMP and VMP arms, respectively) were neutropenia (50% and 53%), thrombocytopenia (49% and 54%), anemia (28% and 38%), peripheral sensory neuropathy (28% and 34%), upper respiratory tract infection (26% and 14%), diarrhea (24% and 25%), pyrexia (23% and 21%), and nausea (21% and 22%).

Infusion-related reactions occurred in 28% of patients in the D-VMP arm and 0% of those in the VMP arm.

The rate of grade 3/4 infections was higher in the D-VMP arm than the VMP arm—23% and 15%, respectively. In both arms, most infections resolved.

The most common grade 3/4 treatment-emergent adverse events (in the D-VMP and VMP arms, respectively) were neutropenia (40% and 39%), thrombocytopenia (34% and 38%), and anemia (16% and 20%).

The rate of discontinuation due to adverse events was 5% in the D-VMP arm and 9% in the VMP arm.

Photo courtesy of Amgen

The European Medicines Agency’s Committee for Medicinal Products for Human Use (CHMP) has released 2 new opinions regarding blinatumomab (Blincyto).

The CHMP recommended expanding the approved use of blinatumomab to include pediatric patients, but the committee also recommended against approving blinatumomab to treat patients with minimal residual disease (MRD).

Blinatumomab is already approved by the European Commission (EC) as monotherapy for adults with Philadelphia chromosome-negative (Ph-), CD19-positive, relapsed or refractory B-cell precursor acute lymphoblastic leukemia (BCP-ALL).

Now, the CHMP has recommended expanding this use to include blinatumomab as monotherapy for patients age 1 and older with Ph-, CD19-positive, relapsed/refractory BCP-ALL. These patients must have at least 2 prior therapies or have relapsed after allogeneic hematopoietic stem cell transplant.

This recommendation was supported by data from Study ‘205. Results from this phase 1/2 study were published in the Journal of Clinical Oncology in 2016.

The CHMP has also recommended against approving blinatumomab to treat BCP-ALL patients with MRD.

This decision was influenced by data from the BLAST study. Results from this phase 2 study were published in Blood earlier this year.

The CHMP noted that, although blinatumomab helped clear away residual cells in many patients in the BLAST trial, there is no strong evidence that this leads to improved survival.

Given the uncertainty, the CHMP was of the opinion that the benefits of blinatumomab do not outweigh its risks in MRD-positive BCP-ALL patients.

Amgen, the company developing and marketing blinatumomab, can request a re-examination of the CHMP’s opinion within 15 days of receiving it.

The CHMP’s recommendations are reviewed by the EC, which has the authority to approve medicines for use in the European Union, Norway, Iceland, and Liechtenstein.

The EC usually makes a decision within 67 days of CHMP recommendations.

Photo courtesy of Amgen

The European Medicines Agency’s Committee for Medicinal Products for Human Use (CHMP) has released 2 new opinions regarding blinatumomab (Blincyto).

The CHMP recommended expanding the approved use of blinatumomab to include pediatric patients, but the committee also recommended against approving blinatumomab to treat patients with minimal residual disease (MRD).

Blinatumomab is already approved by the European Commission (EC) as monotherapy for adults with Philadelphia chromosome-negative (Ph-), CD19-positive, relapsed or refractory B-cell precursor acute lymphoblastic leukemia (BCP-ALL).

Now, the CHMP has recommended expanding this use to include blinatumomab as monotherapy for patients age 1 and older with Ph-, CD19-positive, relapsed/refractory BCP-ALL. These patients must have at least 2 prior therapies or have relapsed after allogeneic hematopoietic stem cell transplant.

This recommendation was supported by data from Study ‘205. Results from this phase 1/2 study were published in the Journal of Clinical Oncology in 2016.

The CHMP has also recommended against approving blinatumomab to treat BCP-ALL patients with MRD.

This decision was influenced by data from the BLAST study. Results from this phase 2 study were published in Blood earlier this year.

The CHMP noted that, although blinatumomab helped clear away residual cells in many patients in the BLAST trial, there is no strong evidence that this leads to improved survival.

Given the uncertainty, the CHMP was of the opinion that the benefits of blinatumomab do not outweigh its risks in MRD-positive BCP-ALL patients.

Amgen, the company developing and marketing blinatumomab, can request a re-examination of the CHMP’s opinion within 15 days of receiving it.

The CHMP’s recommendations are reviewed by the EC, which has the authority to approve medicines for use in the European Union, Norway, Iceland, and Liechtenstein.

The EC usually makes a decision within 67 days of CHMP recommendations.

Photo courtesy of Amgen

The European Medicines Agency’s Committee for Medicinal Products for Human Use (CHMP) has released 2 new opinions regarding blinatumomab (Blincyto).

The CHMP recommended expanding the approved use of blinatumomab to include pediatric patients, but the committee also recommended against approving blinatumomab to treat patients with minimal residual disease (MRD).

Blinatumomab is already approved by the European Commission (EC) as monotherapy for adults with Philadelphia chromosome-negative (Ph-), CD19-positive, relapsed or refractory B-cell precursor acute lymphoblastic leukemia (BCP-ALL).

Now, the CHMP has recommended expanding this use to include blinatumomab as monotherapy for patients age 1 and older with Ph-, CD19-positive, relapsed/refractory BCP-ALL. These patients must have at least 2 prior therapies or have relapsed after allogeneic hematopoietic stem cell transplant.

This recommendation was supported by data from Study ‘205. Results from this phase 1/2 study were published in the Journal of Clinical Oncology in 2016.

The CHMP has also recommended against approving blinatumomab to treat BCP-ALL patients with MRD.

This decision was influenced by data from the BLAST study. Results from this phase 2 study were published in Blood earlier this year.

The CHMP noted that, although blinatumomab helped clear away residual cells in many patients in the BLAST trial, there is no strong evidence that this leads to improved survival.

Given the uncertainty, the CHMP was of the opinion that the benefits of blinatumomab do not outweigh its risks in MRD-positive BCP-ALL patients.

Amgen, the company developing and marketing blinatumomab, can request a re-examination of the CHMP’s opinion within 15 days of receiving it.

The CHMP’s recommendations are reviewed by the EC, which has the authority to approve medicines for use in the European Union, Norway, Iceland, and Liechtenstein.

The EC usually makes a decision within 67 days of CHMP recommendations.

Red blood cells

The European Medicines Agency’s Committee for Medicinal Products for Human Use (CHMP) has recommended a change to the terms of marketing authorization for 3 versions of epoetin alfa—Abseamed, Binocrit, and Epoetin alfa Hexal.

The CHMP is recommending that all 3 products be approved to treat symptomatic anemia (hemoglobin concentration of ≤ 10 g/dL) in adults with low- or intermediate-1-risk primary myelodysplastic syndromes who have low serum erythropoietin (< 200 mU/mL).

The CHMP’s recommendation will be reviewed by the European Commission (EC), which has the authority to approve medicines for use in the European Union, Norway, Iceland, and Liechtenstein.

The EC usually makes a decision within 67 days of the CHMP’s recommendation.

Abseamed, Binocrit, and Epoetin alfa Hexal are already EC-approved for the following indications:

• To treat symptomatic anemia associated with chronic renal failure in adults and children ages 1 to 18 on hemodialysis and adults on peritoneal dialysis
• To treat symptomatic anemia associated with chronic renal failure in adults with renal insufficiency not yet undergoing dialysis for the treatment of severe anemia of renal origin accompanied by clinical symptoms in patients
• For adults receiving chemotherapy for solid tumors, malignant lymphoma, or multiple myeloma who are at risk of transfusion as assessed by the patient’s general status (eg, cardiovascular status, pre-existing anemia at the start of chemotherapy) for the treatment of anemia and reduction of transfusion requirements
• For adults in a predonation program to increase the yield of autologous blood; treatment should only be given to patients with moderate anemia (hemoglobin concentration range between 10 to 13 g/dL [6.2 to 8.1 mmol/L], no iron deficiency) if blood-saving procedures are not available or insufficient when the scheduled major elective surgery requires a large volume of blood (4 or more units for females or 5 or more units for males)
• For non-iron-deficient adults set to undergo major elective orthopedic surgery who have a high perceived risk for transfusion complications to reduce exposure to allogeneic blood transfusions; use should be restricted to patients with moderate anemia (eg, hemoglobin concentration range between 10 to 13 g/dL or 6.2 to 8.1 mmol/L) who do not have an autologous predonation program available and with expected moderate blood loss (900 to 1800 mL).

The marketing authorization holders are Medice Arzneimittel Pütter GmbH & Co. KG for Abseamed, Sandoz GmbH for Binocrit, and Hexal AG for Epoetin alfa Hexal.

Red blood cells

The European Medicines Agency’s Committee for Medicinal Products for Human Use (CHMP) has recommended a change to the terms of marketing authorization for 3 versions of epoetin alfa—Abseamed, Binocrit, and Epoetin alfa Hexal.

The CHMP is recommending that all 3 products be approved to treat symptomatic anemia (hemoglobin concentration of ≤ 10 g/dL) in adults with low- or intermediate-1-risk primary myelodysplastic syndromes who have low serum erythropoietin (< 200 mU/mL).

The CHMP’s recommendation will be reviewed by the European Commission (EC), which has the authority to approve medicines for use in the European Union, Norway, Iceland, and Liechtenstein.

The EC usually makes a decision within 67 days of the CHMP’s recommendation.

Abseamed, Binocrit, and Epoetin alfa Hexal are already EC-approved for the following indications:

• To treat symptomatic anemia associated with chronic renal failure in adults and children ages 1 to 18 on hemodialysis and adults on peritoneal dialysis
• To treat symptomatic anemia associated with chronic renal failure in adults with renal insufficiency not yet undergoing dialysis for the treatment of severe anemia of renal origin accompanied by clinical symptoms in patients
• For adults receiving chemotherapy for solid tumors, malignant lymphoma, or multiple myeloma who are at risk of transfusion as assessed by the patient’s general status (eg, cardiovascular status, pre-existing anemia at the start of chemotherapy) for the treatment of anemia and reduction of transfusion requirements
• For adults in a predonation program to increase the yield of autologous blood; treatment should only be given to patients with moderate anemia (hemoglobin concentration range between 10 to 13 g/dL [6.2 to 8.1 mmol/L], no iron deficiency) if blood-saving procedures are not available or insufficient when the scheduled major elective surgery requires a large volume of blood (4 or more units for females or 5 or more units for males)
• For non-iron-deficient adults set to undergo major elective orthopedic surgery who have a high perceived risk for transfusion complications to reduce exposure to allogeneic blood transfusions; use should be restricted to patients with moderate anemia (eg, hemoglobin concentration range between 10 to 13 g/dL or 6.2 to 8.1 mmol/L) who do not have an autologous predonation program available and with expected moderate blood loss (900 to 1800 mL).

The marketing authorization holders are Medice Arzneimittel Pütter GmbH & Co. KG for Abseamed, Sandoz GmbH for Binocrit, and Hexal AG for Epoetin alfa Hexal.

Red blood cells

The European Medicines Agency’s Committee for Medicinal Products for Human Use (CHMP) has recommended a change to the terms of marketing authorization for 3 versions of epoetin alfa—Abseamed, Binocrit, and Epoetin alfa Hexal.

The CHMP is recommending that all 3 products be approved to treat symptomatic anemia (hemoglobin concentration of ≤ 10 g/dL) in adults with low- or intermediate-1-risk primary myelodysplastic syndromes who have low serum erythropoietin (< 200 mU/mL).

The CHMP’s recommendation will be reviewed by the European Commission (EC), which has the authority to approve medicines for use in the European Union, Norway, Iceland, and Liechtenstein.

The EC usually makes a decision within 67 days of the CHMP’s recommendation.

Abseamed, Binocrit, and Epoetin alfa Hexal are already EC-approved for the following indications:

• To treat symptomatic anemia associated with chronic renal failure in adults and children ages 1 to 18 on hemodialysis and adults on peritoneal dialysis
• To treat symptomatic anemia associated with chronic renal failure in adults with renal insufficiency not yet undergoing dialysis for the treatment of severe anemia of renal origin accompanied by clinical symptoms in patients
• For adults receiving chemotherapy for solid tumors, malignant lymphoma, or multiple myeloma who are at risk of transfusion as assessed by the patient’s general status (eg, cardiovascular status, pre-existing anemia at the start of chemotherapy) for the treatment of anemia and reduction of transfusion requirements
• For adults in a predonation program to increase the yield of autologous blood; treatment should only be given to patients with moderate anemia (hemoglobin concentration range between 10 to 13 g/dL [6.2 to 8.1 mmol/L], no iron deficiency) if blood-saving procedures are not available or insufficient when the scheduled major elective surgery requires a large volume of blood (4 or more units for females or 5 or more units for males)
• For non-iron-deficient adults set to undergo major elective orthopedic surgery who have a high perceived risk for transfusion complications to reduce exposure to allogeneic blood transfusions; use should be restricted to patients with moderate anemia (eg, hemoglobin concentration range between 10 to 13 g/dL or 6.2 to 8.1 mmol/L) who do not have an autologous predonation program available and with expected moderate blood loss (900 to 1800 mL).

The marketing authorization holders are Medice Arzneimittel Pütter GmbH & Co. KG for Abseamed, Sandoz GmbH for Binocrit, and Hexal AG for Epoetin alfa Hexal.

Photo from Amgen

The European Medicines Agency’s Committee for Medicinal Products for Human Use (CHMP) has recommended approval for 2 pegfilgrastim biosimilar candidates—Udenyca and Pelgraz.

Both products have been deemed highly similar to the reference product, Neulasta, a growth-colony-stimulating factor intended to reduce the duration of neutropenia and the incidence of febrile neutropenia due to chemotherapy.

The CHMP’s recommendations for Pelgraz and Udenyca will be reviewed by the European Commission, which has the authority to approve medicines for use in the European Union, Norway, Iceland, and Liechtenstein.

The European Commission usually makes a decision within 67 days of the CHMP’s recommendation.

If approved, Udenyca and Pelgraz will be available as 6 mg solutions for injection.

The full indication for both products will be to reduce the duration of neutropenia and the incidence of febrile neutropenia in adults receiving cytotoxic chemotherapy for malignancies, except chronic myeloid leukemia and myelodysplastic syndromes.

The CHMP said data have shown that Pelgraz and Udenyca both have comparable quality, safety, and efficacy to Neulasta.

Pelgraz’s marketing authorization application is supported by data from a phase 1 pharmacokinetic (PK) and pharmacodynamic (PD) study in healthy volunteers and a phase 3 study of breast cancer patients receiving docetaxel, doxorubicin, and cyclophosphamide.

Results from the phase 1 study were published in Clinical Pharmacology in Drug Development in 2016.

Udenyca’s marketing authorization application is supported by data from an immunogenicity study as well as a PK/PD study comparing Udenyca (formerly CHS-1701) and Neulasta in healthy subjects.

Results from the PK/PD trial were presented at the 2017 ASCO Annual Meeting.

The applicant for Udenyca is ERA Consulting GmbH. The applicant for Pelgraz is Accord Healthcare Limited (the international arm of Intas Pharmaceuticals Ltd).

Photo from Amgen

The European Medicines Agency’s Committee for Medicinal Products for Human Use (CHMP) has recommended approval for 2 pegfilgrastim biosimilar candidates—Udenyca and Pelgraz.

Both products have been deemed highly similar to the reference product, Neulasta, a growth-colony-stimulating factor intended to reduce the duration of neutropenia and the incidence of febrile neutropenia due to chemotherapy.

The CHMP’s recommendations for Pelgraz and Udenyca will be reviewed by the European Commission, which has the authority to approve medicines for use in the European Union, Norway, Iceland, and Liechtenstein.

The European Commission usually makes a decision within 67 days of the CHMP’s recommendation.

If approved, Udenyca and Pelgraz will be available as 6 mg solutions for injection.

The full indication for both products will be to reduce the duration of neutropenia and the incidence of febrile neutropenia in adults receiving cytotoxic chemotherapy for malignancies, except chronic myeloid leukemia and myelodysplastic syndromes.

The CHMP said data have shown that Pelgraz and Udenyca both have comparable quality, safety, and efficacy to Neulasta.

Pelgraz’s marketing authorization application is supported by data from a phase 1 pharmacokinetic (PK) and pharmacodynamic (PD) study in healthy volunteers and a phase 3 study of breast cancer patients receiving docetaxel, doxorubicin, and cyclophosphamide.

Results from the phase 1 study were published in Clinical Pharmacology in Drug Development in 2016.

Udenyca’s marketing authorization application is supported by data from an immunogenicity study as well as a PK/PD study comparing Udenyca (formerly CHS-1701) and Neulasta in healthy subjects.

Results from the PK/PD trial were presented at the 2017 ASCO Annual Meeting.

The applicant for Udenyca is ERA Consulting GmbH. The applicant for Pelgraz is Accord Healthcare Limited (the international arm of Intas Pharmaceuticals Ltd).

Photo from Amgen

The European Medicines Agency’s Committee for Medicinal Products for Human Use (CHMP) has recommended approval for 2 pegfilgrastim biosimilar candidates—Udenyca and Pelgraz.

Both products have been deemed highly similar to the reference product, Neulasta, a growth-colony-stimulating factor intended to reduce the duration of neutropenia and the incidence of febrile neutropenia due to chemotherapy.

The CHMP’s recommendations for Pelgraz and Udenyca will be reviewed by the European Commission, which has the authority to approve medicines for use in the European Union, Norway, Iceland, and Liechtenstein.

The European Commission usually makes a decision within 67 days of the CHMP’s recommendation.

If approved, Udenyca and Pelgraz will be available as 6 mg solutions for injection.

The full indication for both products will be to reduce the duration of neutropenia and the incidence of febrile neutropenia in adults receiving cytotoxic chemotherapy for malignancies, except chronic myeloid leukemia and myelodysplastic syndromes.

The CHMP said data have shown that Pelgraz and Udenyca both have comparable quality, safety, and efficacy to Neulasta.

Pelgraz’s marketing authorization application is supported by data from a phase 1 pharmacokinetic (PK) and pharmacodynamic (PD) study in healthy volunteers and a phase 3 study of breast cancer patients receiving docetaxel, doxorubicin, and cyclophosphamide.

Results from the phase 1 study were published in Clinical Pharmacology in Drug Development in 2016.

Udenyca’s marketing authorization application is supported by data from an immunogenicity study as well as a PK/PD study comparing Udenyca (formerly CHS-1701) and Neulasta in healthy subjects.

Results from the PK/PD trial were presented at the 2017 ASCO Annual Meeting.

The applicant for Udenyca is ERA Consulting GmbH. The applicant for Pelgraz is Accord Healthcare Limited (the international arm of Intas Pharmaceuticals Ltd).

Image by Andre E.X. Brown

The European Medicines Agency’s Committee for Medicinal Products for Human Use (CHMP) has reiterated its negative opinion of betrixaban.

Once again, the CHMP has concluded that it cannot recommend approval of betrixaban for the prevention of venous thromboembolism (VTE) in adults hospitalized for an acute medical illness with risk factors for VTE, including VTE-related death.

The CHMP previously issued a negative opinion of betrixaban in March, but Portola Pharmaceuticals, Inc., requested a re-examination of that opinion.

The CHMP agreed to re-examine the opinion and confirmed the refusal of the marketing authorization on July 26.

The marketing authorization application for betrixaban was supported by data from the phase 3 APEX study. In this trial, researchers compared oral betrixaban to injectable enoxaparin for the prevention of VTE in patients with acute medical illnesses.

The CHMP said APEX did not satisfactorily show betrixaban’s effectiveness when used for preventing VTE in patients admitted to the hospital for recent medical illness.

In addition, patients treated with betrixaban had more episodes of bleeding than patients who received enoxaparin.

The CHMP said the excess bleeding was an important concern because betrixaban was expected to be used in patients with serious underlying conditions for whom any episode of bleeding could have serious consequences, and betrixaban’s long persistence in the body could complicate management of bleeding.

Overall, the CHMP said the benefits of betrixaban did not outweigh its risks.

Portola said this decision will not affect patients currently enrolled in clinical trials of betrixaban.

The company also said it will continue working with regulatory authorities in countries outside the European Union to potentially bring betrixaban to patients as quickly as possible.

“We are disappointed by the committee’s assessment given both the unmet need and the clinically meaningful outcomes of the APEX trial in reducing VTE and VTE-related deaths in a vulnerable patient population,” said John T. Curnutte, MD, PhD, interim co-president and head of research and development for Portola.

“We remain confident in the potential public health impact of betrixaban and will maintain focus on the US commercial launch as we continue to work toward our goal of expanding patient access to betrixaban around the world.”

Betrixaban was approved in the US in June 2017 under the trade name Bevyxxa.

Image by Andre E.X. Brown

The European Medicines Agency’s Committee for Medicinal Products for Human Use (CHMP) has reiterated its negative opinion of betrixaban.

Once again, the CHMP has concluded that it cannot recommend approval of betrixaban for the prevention of venous thromboembolism (VTE) in adults hospitalized for an acute medical illness with risk factors for VTE, including VTE-related death.

The CHMP previously issued a negative opinion of betrixaban in March, but Portola Pharmaceuticals, Inc., requested a re-examination of that opinion.

The CHMP agreed to re-examine the opinion and confirmed the refusal of the marketing authorization on July 26.

The marketing authorization application for betrixaban was supported by data from the phase 3 APEX study. In this trial, researchers compared oral betrixaban to injectable enoxaparin for the prevention of VTE in patients with acute medical illnesses.

The CHMP said APEX did not satisfactorily show betrixaban’s effectiveness when used for preventing VTE in patients admitted to the hospital for recent medical illness.

In addition, patients treated with betrixaban had more episodes of bleeding than patients who received enoxaparin.

The CHMP said the excess bleeding was an important concern because betrixaban was expected to be used in patients with serious underlying conditions for whom any episode of bleeding could have serious consequences, and betrixaban’s long persistence in the body could complicate management of bleeding.

Overall, the CHMP said the benefits of betrixaban did not outweigh its risks.

Portola said this decision will not affect patients currently enrolled in clinical trials of betrixaban.

The company also said it will continue working with regulatory authorities in countries outside the European Union to potentially bring betrixaban to patients as quickly as possible.

“We are disappointed by the committee’s assessment given both the unmet need and the clinically meaningful outcomes of the APEX trial in reducing VTE and VTE-related deaths in a vulnerable patient population,” said John T. Curnutte, MD, PhD, interim co-president and head of research and development for Portola.

“We remain confident in the potential public health impact of betrixaban and will maintain focus on the US commercial launch as we continue to work toward our goal of expanding patient access to betrixaban around the world.”

Betrixaban was approved in the US in June 2017 under the trade name Bevyxxa.

Image by Andre E.X. Brown

The European Medicines Agency’s Committee for Medicinal Products for Human Use (CHMP) has reiterated its negative opinion of betrixaban.

Once again, the CHMP has concluded that it cannot recommend approval of betrixaban for the prevention of venous thromboembolism (VTE) in adults hospitalized for an acute medical illness with risk factors for VTE, including VTE-related death.

The CHMP previously issued a negative opinion of betrixaban in March, but Portola Pharmaceuticals, Inc., requested a re-examination of that opinion.

The CHMP agreed to re-examine the opinion and confirmed the refusal of the marketing authorization on July 26.

The marketing authorization application for betrixaban was supported by data from the phase 3 APEX study. In this trial, researchers compared oral betrixaban to injectable enoxaparin for the prevention of VTE in patients with acute medical illnesses.

The CHMP said APEX did not satisfactorily show betrixaban’s effectiveness when used for preventing VTE in patients admitted to the hospital for recent medical illness.

In addition, patients treated with betrixaban had more episodes of bleeding than patients who received enoxaparin.

The CHMP said the excess bleeding was an important concern because betrixaban was expected to be used in patients with serious underlying conditions for whom any episode of bleeding could have serious consequences, and betrixaban’s long persistence in the body could complicate management of bleeding.

Overall, the CHMP said the benefits of betrixaban did not outweigh its risks.

Portola said this decision will not affect patients currently enrolled in clinical trials of betrixaban.

The company also said it will continue working with regulatory authorities in countries outside the European Union to potentially bring betrixaban to patients as quickly as possible.

“We are disappointed by the committee’s assessment given both the unmet need and the clinically meaningful outcomes of the APEX trial in reducing VTE and VTE-related deaths in a vulnerable patient population,” said John T. Curnutte, MD, PhD, interim co-president and head of research and development for Portola.

“We remain confident in the potential public health impact of betrixaban and will maintain focus on the US commercial launch as we continue to work toward our goal of expanding patient access to betrixaban around the world.”

Betrixaban was approved in the US in June 2017 under the trade name Bevyxxa.