Nivolumab’s safety profile further clarified

In patients taking nivolumab for advanced melanoma, most immunologic adverse effects are mild to moderate in intensity and resolve when existing management guidelines are followed, investigators report.

Nivolumab, a programmed death-1 (PD-1) checkpoint inhibitor antibody, is effective in several tumor types, including melanoma, but its safety profile has not been well characterized to date. Researchers pooled data from two phase I exploratory and two phase III comparative clinical trials of advanced melanoma to better examine safety outcomes, in what they described as “the largest and most comprehensive analysis to date of ... anti-PD-1 monotherapy.”

The study included 576 patients (median age, 61 years) taking nivolumab. Slightly more than half had received ipilimumab, another immune checkpoint inhibitor, previously. Twelve percent had brain metastases. The median duration of nivolumab therapy was 3.7 months, reflecting a median of nine doses of the agent per patient. Median follow-up was 7.2 months (range, 0.3-62.5 months), said Jeffrey S. Weber, MD, PhD, of Dana-Farber Cancer Institute, Boston, and his associates.

The overall rate of adverse events likely to have an immunologic etiology was 49%, and most of these were mild to moderate; severe immunologic adverse effects occurred in less than 4% of patients. Prior ipilimumab therapy did not influence the number or severity of adverse reactions to nivolumab. Most immunologic adverse effects involved the skin and GI tract, and most of them, including the few severe effects, resolved when treated according to safety management guidelines.

The types of immunologic adverse events in this study were similar to those previously reported for this class of drug. However, pneumonitis developed less frequently (less than 2% of patients) in this study population than has been reported previously and also was less severe. Rare and unusual immunologic adverse events remain a possibility with PD-1 checkpoint inhibitor antibodies. In particular, five of these study participants developed grade 3 neurologic toxicities. Further information on such effects and on optimal management is needed, the investigators wrote (J Clin Oncol. 2016 Nov 14. doi: 10.1200/JCO.66.1389).

Immune modulators – chiefly systemic, topical, or inhaled corticosteroids – were frequently used to treat immunologic adverse effects. “Although there is a theoretic concern that [this] might interfere with an anticancer immune response, the results of our analysis suggest that immune modulators do not negatively affect the rate or quality of antitumor responses [to] nivolumab therapy,” Dr. Weber and his associates said.

In patients taking nivolumab for advanced melanoma, most immunologic adverse effects are mild to moderate in intensity and resolve when existing management guidelines are followed, investigators report.

Nivolumab, a programmed death-1 (PD-1) checkpoint inhibitor antibody, is effective in several tumor types, including melanoma, but its safety profile has not been well characterized to date. Researchers pooled data from two phase I exploratory and two phase III comparative clinical trials of advanced melanoma to better examine safety outcomes, in what they described as “the largest and most comprehensive analysis to date of ... anti-PD-1 monotherapy.”

The study included 576 patients (median age, 61 years) taking nivolumab. Slightly more than half had received ipilimumab, another immune checkpoint inhibitor, previously. Twelve percent had brain metastases. The median duration of nivolumab therapy was 3.7 months, reflecting a median of nine doses of the agent per patient. Median follow-up was 7.2 months (range, 0.3-62.5 months), said Jeffrey S. Weber, MD, PhD, of Dana-Farber Cancer Institute, Boston, and his associates.

The overall rate of adverse events likely to have an immunologic etiology was 49%, and most of these were mild to moderate; severe immunologic adverse effects occurred in less than 4% of patients. Prior ipilimumab therapy did not influence the number or severity of adverse reactions to nivolumab. Most immunologic adverse effects involved the skin and GI tract, and most of them, including the few severe effects, resolved when treated according to safety management guidelines.

The types of immunologic adverse events in this study were similar to those previously reported for this class of drug. However, pneumonitis developed less frequently (less than 2% of patients) in this study population than has been reported previously and also was less severe. Rare and unusual immunologic adverse events remain a possibility with PD-1 checkpoint inhibitor antibodies. In particular, five of these study participants developed grade 3 neurologic toxicities. Further information on such effects and on optimal management is needed, the investigators wrote (J Clin Oncol. 2016 Nov 14. doi: 10.1200/JCO.66.1389).

Immune modulators – chiefly systemic, topical, or inhaled corticosteroids – were frequently used to treat immunologic adverse effects. “Although there is a theoretic concern that [this] might interfere with an anticancer immune response, the results of our analysis suggest that immune modulators do not negatively affect the rate or quality of antitumor responses [to] nivolumab therapy,” Dr. Weber and his associates said.

In patients taking nivolumab for advanced melanoma, most immunologic adverse effects are mild to moderate in intensity and resolve when existing management guidelines are followed, investigators report.

Nivolumab, a programmed death-1 (PD-1) checkpoint inhibitor antibody, is effective in several tumor types, including melanoma, but its safety profile has not been well characterized to date. Researchers pooled data from two phase I exploratory and two phase III comparative clinical trials of advanced melanoma to better examine safety outcomes, in what they described as “the largest and most comprehensive analysis to date of ... anti-PD-1 monotherapy.”

The study included 576 patients (median age, 61 years) taking nivolumab. Slightly more than half had received ipilimumab, another immune checkpoint inhibitor, previously. Twelve percent had brain metastases. The median duration of nivolumab therapy was 3.7 months, reflecting a median of nine doses of the agent per patient. Median follow-up was 7.2 months (range, 0.3-62.5 months), said Jeffrey S. Weber, MD, PhD, of Dana-Farber Cancer Institute, Boston, and his associates.

The overall rate of adverse events likely to have an immunologic etiology was 49%, and most of these were mild to moderate; severe immunologic adverse effects occurred in less than 4% of patients. Prior ipilimumab therapy did not influence the number or severity of adverse reactions to nivolumab. Most immunologic adverse effects involved the skin and GI tract, and most of them, including the few severe effects, resolved when treated according to safety management guidelines.

The types of immunologic adverse events in this study were similar to those previously reported for this class of drug. However, pneumonitis developed less frequently (less than 2% of patients) in this study population than has been reported previously and also was less severe. Rare and unusual immunologic adverse events remain a possibility with PD-1 checkpoint inhibitor antibodies. In particular, five of these study participants developed grade 3 neurologic toxicities. Further information on such effects and on optimal management is needed, the investigators wrote (J Clin Oncol. 2016 Nov 14. doi: 10.1200/JCO.66.1389).

Immune modulators – chiefly systemic, topical, or inhaled corticosteroids – were frequently used to treat immunologic adverse effects. “Although there is a theoretic concern that [this] might interfere with an anticancer immune response, the results of our analysis suggest that immune modulators do not negatively affect the rate or quality of antitumor responses [to] nivolumab therapy,” Dr. Weber and his associates said.