Regulatory approval

Published by the Food and Drug Administration.

The U.S. Food and Drug Administration granted approval to pembrolizumab for the first-line treatment of patients with non-small cell lung cancer expressing PD-L1 [Tumor Proportion Score (TPS) >=1%], as determined by an FDA-approved test, with no EGFR or ALK genomic tumor aberrations, and is: Stage III where patients are not candidates for surgical resection or definitive chemoradiation, or metastatic.

This is written in the approval document as:

KEYTRUDA is a programmed death receptor-1 (PD-1)-blocking antibody indicated as a single agent for the first-line treatment of patients with NSCLC expressing PD-L1 [Tumor Proportion Score (TPS) >=1%] as determined by an FDA-approved test, with no EGFR or ALK genomic tumor aberrations, and is: Stage III where patients are not candidates for surgical resection or definitive chemoradiation, or metastatic.

Citation

Merck Sharp & Dohme Corp. Keytruda (pembrolizumab) [package insert]. U.S. Food and Drug Administration website. https://www.accessdata.fda.gov/drugsatfda_docs/label/2025/125514s174lbl.pdf. Revised April 2025. Accessed April 30, 2025.

Therapeutic response

Precision oncology relationships for therapeutic response derived from this regulatory approval.

Type	Biomarker(s)	Cancer type	Therapy(ies)
Sensitivity (+)	PD-L1 >= 1%, Wild type ALK, Wild type EGFR	Non-Small Cell Lung Cancer	Pembrolizumab