FDA Updates Prescribing Information for Keytruda and Tecentriq

On August 16, 2018, the Food and Drug Administration updated the prescribing information for pembrolizumab (Keytruda, Merck & Co., Inc.) and atezolizumab (Tecentriq, Genentech, Inc.) to require the use of an FDA-approved companion diagnostic test to determine PD-L1 levels in tumor tissue from patients with locally advanced or metastatic urothelial cancer who are cisplatin-ineligible. FDA approved two different companion diagnostic tests, one for use with Keytruda and one for use with Tecentriq.

On August 16, 2018, the FDA approved the Dako PD-L1 IHC 22C3 PharmDx Assay (Dako North America, Inc.) as a companion diagnostic to select patients with locally advanced or metastatic urothelial carcinoma who are cisplatin-ineligible for treatment with Keytruda. The 22C3 assay determines PD-L1 expression by using a combined positive score (CPS) assessing PD-L1 staining in tumor and immune cells.

On July 2, 2018, the FDA approved the Ventana PD-L1 (SP142) Assay (Ventana Medical Systems, Inc.) as a companion diagnostic test to select patients with locally advanced or metastatic urothelial carcinoma who are cisplatin-ineligible for treatment with Tecentriq. The SP142 assay determines PD L1 expression in immune cells.

Read the full FDA announcement here.

Posted 8/20/2018