On May 10, 2021 Checkmate Pharmaceuticals, Inc. (NASDAQ: CMPI) ("Checkmate"), a clinical stage biopharmaceutical company focused on developing its proprietary technology to harness the power of the immune system to combat cancer, reported the development program expansion of vidutolimod (CMP-001) into non-melanoma skin cancers in combination with Libtayo (cemiplimab) under a clinical supply agreement with Regeneron Pharmaceuticals, Inc. ("Regeneron") (Press release, Checkmate Pharmaceuticals, MAY 10, 2021, View Source [SID1234579601]). Vidutolimod is an advanced generation Toll-like receptor 9 (TLR9) agonist, delivered as a biologic virus-like particle utilizing a CpG-A oligodeoxynucleotide as a key component. Cemiplimab is a PD-1 blocking antibody being jointly developed by Regeneron and Sanofi.
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Checkmate and Regeneron will collaborate on a multi-indication, Phase 2, proof-of-concept clinical trial of vidutolimod in combination with cemiplimab in the following patient cohorts: (a) PD-1 treatment-naïve subjects with cutaneous squamous cell carcinoma (CSCC), (b) subjects with cutaneous squamous cell carcinoma (CSCC) that is refractory to PD-1 blockade, and (c) subjects with Merkel cell carcinoma (MCC) that is refractory to PD-1 blockade. Checkmate will be the sponsor of the clinical trial, and Regeneron will supply cemiplimab.
"We’re pleased to collaborate with Regeneron as we expand evaluation of vidutolimod as a potent stimulator of innate immune activity to patients with life-threatening non-melanoma skin cancers such as CSCC and MCC," said Barry Labinger, President and Chief Executive Officer of Checkmate. "We look forward to advancing vidutolimod in combination with Libtayo to further unlock the capabilities and impact of immuno-oncology therapeutics."