Corvus Presents Provisional Data On CPI-444

Corvus Pharmaceuticals (NASDAQ:CRVS) shared interim safety and efficiency results from an ongoing Phase 1/1b study at the American Association for Cancer Research Annual Meeting.
As quoted in the press release:

The data showed that treatment with CPI-444 as a single agent and in combination with atezolizumab (Tecentriq®) was well tolerated and resulted in anti-tumor activity in patients with multiple types of advanced solid tumors, including those resistant or refractory to prior treatment with anti-PD-1 or anti-PD-L1 antibodies. CPI-444 is a selective and potent inhibitor of the adenosine A2A receptor. Atezolizumab, developed by Genentech, a member of the Roche Group, is a monoclonal antibody designed to target and bind to a protein called PD-L1 (programmed death ligand-1).
“The data obtained to date are the first report of clinical activity of adenosine receptor blockade in cancer and indicate that CPI-444 provides disease control and induces tumor regression in a number of patients with extensive disease in several tumor types, many of whom are resistant/refractory to prior therapy with an anti-PD-(L)1 antibody,” said Richard A. Miller, an oncologist and co-founder, president and chief executive officer of Corvus. “In addition to the previously announced expansion of the single-agent renal cell cancer cohort, we have expanded three more cohorts — the single agent non-small cell lung cancer patient cohort as well as the renal cell and non-small cell lung cancer patient cohorts treated with the combination therapy.”
Interim safety data on 113 patients and efficacy data for 96 patients enrolled in the study were presented at the AACR conference. Patients with the following histologies were enrolled: 28% triple negative breast cancer (TNBC); 25% non-small cell lung cancer (NSCLC); 12% melanoma (MEL); 12% renal cell cancer (RCC) and 23% others. The median age of the patients was 64 years. All patients had failed approved therapies for their disease, having received a median of two prior treatment regimens (range: 1-5), and 56 percent were resistant or refractory to prior treatment with anti-PD-(L)1 antibodies. Ninety percent of patients had visceral metastases including 37% with liver and 9% with brain metastases.  For patients with RCC and NSCLC, the median number of prior therapies was 4 and 3, respectively.  Seventy nine percent and 75%, of RCC and NSCLC patients, respectively, were resistant/refractory to prior anti-PD-(L)1 therapy. The efficacy endpoints of the study are response rate and disease control rate (defined as complete response, partial response or stable disease).

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