Cyteir Therapeutics, Inc. announced that it is discontinuing all development of CYT-0851, its investigational monocarboxylate transporter inhibitor, and that Cyteir’s Board of Directors has determined, after consideration of potential strategic alternatives, it is in the best interests of its shareholders to dissolve Cyteir, liquidate its assets following an orderly wind down of the Company’s operations, and return remaining cash to shareholders. CYT-0851 was being evaluated in a Phase 1 combination study with capecitabine or gemcitabine in advanced ovarian cancer and other solid tumors. While durable responses were observed in both combination arms, the overall clinical efficacy data did not meet Cyteir’s criteria to advance the program into the next phase of clinical development.

Given the resources required to identify predictive biomarkers to identify who could potentially benefit from treatment with CYT-0851, and the current financial and regulatory environment, continuation of development of CYT-0851 by Cyteir was determined not to be feasible. The Company will continue to treat patients currently enrolled in the Company’s Phase 1 combination study with capecitabine or gemcitabine prior to the effectiveness of the Company’s dissolution.