paclitaxel in patients with recurrent ovarian or endometrial tumors. Phase 1b studies are also expected to be opened in combination with gemcitabine in late stage pancreatic cancer.
In recent months, Bio-Path advanced to dose level 2 and expects to complete enrollment in order to advance to dose level 3 by year-end.
Phase 1/1b Clinical Trial in BP1002 in Relapsed/Refractory AML – A Phase 1/1b clinical trial for BP1002 to treat relapsed/refractory AML patients, including venetoclax-resistant patients, is ongoing. BP1002 targets the protein Bcl-2, which is responsible for driving cell survival in up to 60% of all cancers. The drug venetoclax treats AML patients by blocking the activity of the Bcl-2 protein in AML patients. However, patients become resistant to venetoclax. BP1002 treats the Bcl-2 target by blocking the cell’s ability to produce Bcl-2, and could have the potential to eliminate the need for venetoclax. AML patients that fail frontline venetoclax-based therapy have very poor prognosis with median overall survival of less than three months. The first dose cohort consisted of a starting dose of 20 mg/m2, and there were no dose limiting toxicities.
Bio-Path recently completed the second dose cohort of 40 mg/m2 and is completing an analysis of PK/PD data to be submitted to the FDA in order to advance to the next dose level. Upon submission of data and approval from FDA, Bio-Path expects to advance to dose level 3 in the fourth quarter of 2024.
Phase 1 Clinical Trial in BP1002 in Refractory/Relapsed Lymphoma and Chronic Lymphocytic Leukemia (CLL) – A Phase 1 clinical trial to evaluate the ability of BP1002 to treat refractory/relapsed lymphoma and refractory/relapsed chronic lymphocytic leukemia (CLL) patients is currently ongoing. The Phase 1 clinical trial is being conducted at the Georgia Cancer Center, The University of Texas Southwestern and New York Medical College. In January 2024, Bio-Path announced successful completion of the first dose cohort in the Phase 1 clinical trial. A total of six evaluable patients are scheduled to be treated over two dose levels with BP1002 monotherapy in a standard 3+3 design, unless there is a dose limiting toxicity which would require an additional three patients to be tested. There were no dose limiting toxicities in the first dose cohort (20 mg/m2).
Enrollment has continued for patients in the second BP1002 dose cohort of 40 mg/m2 and the Company expects to complete enrollment and to review these data by year-end.
Preclinical Work for BP1003 – The Company continues to advance its drug candidate, BP1003, for the treatment of advanced solid tumors, including pancreatic cancer. BP1003 is an antisense RNAi nanoparticle targeting the STAT3 protein. Plans are to conduct a Phase 1 study of BP1003 in patients with refractory, metastatic solid tumors (pancreatic, non-small cell lung cancer).
Prexigebersen as Potential Treatment for Obesity and Obesity-related Cancers – The RNAi target of prexigebersen is the Grb2 protein, which is involved in activating the RAS/ERK pathway for cell growth. By blocking the cell’s ability to produce Grb2, prexigebersen treatment may limit cell growth. In obesity, two such pathways are related to leptin and insulin. Activation of leptin or insulin receptors can stimulate the RAS/ERK pathway via Grb2i.
Bio-Path believes development of prexigebersen for the treatment for obesity and obesity-related cancers could be accelerated given the large amount of safety data from prexigebersen treatment of leukemia patients and the continued unmet medical need. The Company is preparing for preclinical development evaluating prexigebersen for the treatment of obesity and will continue thereafter to conduct additional Investigational New Drug (IND)-enabling studies with an aim to advance prexigebersen into first-in-human studies in this indication.
About Bio-Path Holdings, Inc.
Bio-Path is a biotechnology company developing DNAbilize®, a novel technology that has yielded a pipeline of RNAi nanoparticle drugs that can be administered with a simple intravenous transfusion. Bio-Path’s lead product candidate, prexigebersen (BP1001, targeting the Grb2 protein), is in a Phase 2 study for blood cancers, and BP1001-A, a drug product modification of prexigebersen, is in a Phase 1/1b study for solid tumors. The Company’s second product, BP1002, which targets the Bcl-2 protein, is being evaluated for the treatment of blood cancers and solid tumors, including lymphoma and acute myeloid leukemia. In addition, an IND is expected to be filed for BP1003, a novel liposome-incorporated STAT3 antisense oligodeoxynucleotide developed by Bio-Path as a specific inhibitor of STAT3.