Constellation Pharmaceuticals recently initiated a Phase 1 clinical trial that will test whether single-agent CPI-0610 is safe and effective as an anti-myeloma therapy.

The clinical trial is taking place at a several locations across the United States, and is open to multiple myeloma patients who have relapsed after at least one previous myeloma treatment regimen.

CPI-0610 is a small molecule that inhibits bromodomain and extra-terminal (BET) proteins, which are involved in regulating the cell cycle and cell death. Bromodomain inhibitors, which include the compound JQ1, have attracted attention in recent years as potential treatments for a range of different cancers, including multiple myeloma.

A Phase 1 clinical trial of CPI-0610 as a potential treatment for lymphoma has been ongoing since last summer. The Phase 1 trial in myeloma and another Phase 1 trial in patients with acute leukemias and myelodysplastic syndromes have been added based on preclinical research showing blood-related cancers may be highly sensitive to BET inhibition.

For more information about the trial, see the trial description at the U.S. clinical trial registry.