Bio-Path Holdings, Inc. announced the enrollment and dosing of the first patient in a Phase 1/1b clinical trial evaluating the ability of BP1002 to treat refractory/relapsed acute myeloid leukemia (AML) patients. BP1002 targets the protein Bcl-2, which is responsible for driving cell survival in up to 60% of all cancers. By targeting Bcl-2 at the mRNA level rather than the protein, BP1002 may overcome and prevent some of the mechanisms of resistance that affect venetoclax treatment.

The current standard of care for patients with AML not eligible for intensive chemotherapy is venetoclax, an oral Bcl-2 inhibitor that targets the BH3 domain of the Bcl-2 protein, in combination with a hypomethylating agent or with low-dose cytarabine. High expression of Bcl-2 has been correlated with adverse prognosis for patients diagnosed with AML. Preclinical studies have shown BP1002 to be a potent inhibitor against the Bcl-2 target, and its benign safety profile should enable BP1002 combination therapy with approved agents, such as decitabine.

The Phase 1/1b clinical trial is being conducted at several leading cancer centers in the United States, including the Weill Medical College of Cornell University, The University of Texas MD Anderson Cancer Center, the Georgia Cancer Center, Scripps Health, and The University of California at Los Angeles Cancer Center. Initially, a total of six evaluable patients are scheduled to be treated with BP1002 monotherapy in a standard 3+3 design, with a starting dose of 20 mg/m2. The approved treatment cycle is two doses per week over four weeks, resulting in eight doses administered over twenty-eight days.

The Phase 1b portion of the study will commence after completion of BP1002 monotherapy cohorts and will assess the safety and efficacy of BP1002 in combination with decitabine in refractory/relapsed AML patients.