Abstract
Programmed cell death-1 (PD-1) pathway inhibition in head and neck squamous cell carcinoma (HNSCC) has demonstrated inconsistent efficacy regarding human papillomavirus (HPV) status and PD-L1 expression. This study compared outcomes in HNSCC in the context of PD-L1 and HPV expression. Outcomes: PD-L1 and HPV expression; overall survival (OS), and tumor response (ORR). 1088 patients received PD-1/L1 inhibitors. Four methodologies were identified in determining PD-L1 expression, most commonly using the Dako PD-L1 IHC 22C3 pharmaDx assay. Using a 1% threshold, ORR was greater for PD-L1 expressers vs non-expressers (18.9%, CI 16.1-21.8 v 8.8% CI 5.3-13.7, P = 0.009), as was OS at 6 months (60.6%, CI 49.2-71.4 v 49.0%, CI 39.1-59.0, P = 0.04) but not at 12 or 18 months. No advantages were identified for HPV expressers. Patients expressing PD-L1 may have a better tumor response and OS. No impact on survival or response was observed based on HPV status.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.