Pembrolizumab in Combination With CRT for LA-SCCHN

Summary

This is a single-arm, multi-site, open-label trial of pembrolizumab (MK-3475) used in combination with standard, cisplatin-based, definitive chemoradiotherapy (CRT) in patients with stage III-IVB squamous cell carcinoma of the head and neck (SCCHN). Approximately 39 patients with Stage III-IVB SCCHN will be enrolled to evaluate both the safety and efficacy of this novel combination. Subjects will not be randomized and will all receive the study treatment. Treatment will consist of a loading dose of pembrolizumab 200 mg IV given 7 days prior to initiation of CRT (day-7). CRT with cisplatin 40 mg/m2 IV weekly and head and neck radiation at 70 Gy fractionated at 2 Gy once daily over 35 days, will begin on day 1. CRT will end on approximately day 46-50. Pembrolizumab 200 mg IV will continue following CRT in an adjuvant fashion starting on day 57 for an additional 5 doses, as tolerated, through day 141. Subjects will be evaluated for response following treatment.

Timeline

Start

2015-11

Primary completion

2020-09-29

Completion

2025-08

Publications

• Background Spanos WC, Nowicki P, Lee DW, Hoover A, Hostager B, Gupta A, Anderson ME, Lee JH. Immune response during therapy with cisplatin or radiation for human papillomavirus-related head and neck cancer. Arch Otolaryngol Head Neck Surg. 2009 Nov;135(11):1137-46. doi: 10.1001/archoto.2009.159.
• Background Vermeer DW, Spanos WC, Vermeer PD, Bruns AM, Lee KM, Lee JH. Radiation-induced loss of cell surface CD47 enhances immune-mediated clearance of human papillomavirus-positive cancer. Int J Cancer. 2013 Jul;133(1):120-9. doi: 10.1002/ijc.28015. Epub 2013 Feb 12.
• Background Lyford-Pike S, Peng S, Young GD, Taube JM, Westra WH, Akpeng B, Bruno TC, Richmon JD, Wang H, Bishop JA, Chen L, Drake CG, Topalian SL, Pardoll DM, Pai SI. Evidence for a role of the PD-1:PD-L1 pathway in immune resistance of HPV-associated head and neck squamous cell carcinoma. Cancer Res. 2013 Mar 15;73(6):1733-41. doi: 10.1158/0008-5472.CAN-12-2384. Epub 2013 Jan 3.
• Background Seiwert T, Burtness B, Weiss J, Gluck I, Eder JP, Pai SI, et al. A phase IB study of MK-3475 in patients with human papilloma virus (HPV) associated and non-HPV associated head and neck (H/N) cancer. ASCO 2014 Abstract #6011, Jun 2014.
• Background Dovedi SJ, Adlard AL, Lipowska-Bhalla G, McKenna C, Jones S, Cheadle EJ, Stratford IJ, Poon E, Morrow M, Stewart R, Jones H, Wilkinson RW, Honeychurch J, Illidge TM. Acquired resistance to fractionated radiotherapy can be overcome by concurrent PD-L1 blockade. Cancer Res. 2014 Oct 1;74(19):5458-68. doi: 10.1158/0008-5472.CAN-14-1258.
• Background Parikh F, Duluc D, Imai N, Clark A, Misiukiewicz K, Bonomi M, Gupta V, Patsias A, Parides M, Demicco EG, Zhang DY, Kim-Schulze S, Kao J, Gnjatic S, Oh S, Posner MR, Sikora AG. Chemoradiotherapy-induced upregulation of PD-1 antagonizes immunity to HPV-related oropharyngeal cancer. Cancer Res. 2014 Dec 15;74(24):7205-16. doi: 10.1158/0008-5472.CAN-14-1913. Epub 2014 Oct 15.
• Powell SF, Gold KA, Gitau MM, Sumey CJ, Lohr MM, McGraw SC, Nowak RK, Jensen AW, Blanchard MJ, Fischer CD, Bykowski J, Ellison CA, Black LJ, Thompson PA, Callejas-Valera JL, Lee JH, Cohen EEW, Spanos WC. Safety and Efficacy of Pembrolizumab With Chemoradiotherapy in Locally Advanced Head and Neck Squamous Cell Carcinoma: A Phase IB Study. J Clin Oncol. 2020 Jul 20;38(21):2427-2437. doi: 10.1200/JCO.19.03156. Epub 2020 Jun 1.

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Indications