FDA Approves Merck’s KEYTRUDA® as Adjuvant Treatment for Patients with Stage IIB or IIC Melanoma

Merck announced that the FDA has approved KEYTRUDA, Merck’s anti-PD-1 therapy, for the adjuvant treatment of adult and pediatric (12 years and older) patients with stage IIB or IIC melanoma following complete resection. 

Additionally, the FDA expanded the indication for KEYTRUDA as adjuvant treatment for stage III melanoma following complete resection to include pediatric patients (12 years and older).

The approval in stage IIB and IIC melanoma is based on data from the first interim analysis of the Phase 3 KEYNOTE-716 trial, in which KEYTRUDA showed a statistically significant improvement in recurrence-free survival (RFS), reducing the risk of disease recurrence or death by 35% (HR=0.65 [95% CI, 0.46-0.92]; p=0.0132) compared to placebo. Median RFS was not reached for either group. After a median follow-up of 14.4 months, 11% (n=54/487) of patients who received KEYTRUDA had recurrence or died compared to 17% (n=82/489) of patients who received placebo. Efficacy in pediatric patients (12 years and older) with stage IIB, IIC and III melanoma is supported by extrapolation of efficacy data from adults, given similar biology, pharmacology of drug effect, as well as similar exposure-response for efficacy and safety.

Immune-mediated adverse reactions, which may be severe or fatal, can occur in any organ system or tissue and can affect more than one body system simultaneously. Immune-mediated adverse reactions can occur at any time during or after treatment with KEYTRUDA, including pneumonitis, colitis, hepatitis, endocrinopathies, nephritis, dermatologic reactions, solid organ transplant rejection, and complications of allogeneic hematopoietic stem cell transplantation. Important immune-mediated adverse reactions listed here may not include all possible severe and fatal immune-mediated adverse reactions. Early identification and management of immune-mediated adverse reactions are essential to ensure safe use of KEYTRUDA. Based on the severity of the adverse reaction, KEYTRUDA should be withheld or permanently discontinued and corticosteroids administered if appropriate. KEYTRUDA can also cause severe or life-threatening infusion-related reactions. Based on its mechanism of action, KEYTRUDA can cause fetal harm when administered to a pregnant woman. For more information, see “Selected Important Safety Information” below.