On February 13, 2025 Bio-Path Holdings, Inc., (NASDAQ:BPTH), a biotechnology company leveraging its proprietary DNAbilize liposomal delivery and antisense technology to develop a portfolio of targeted nucleic acid cancer and obesity drugs, reported an update from the Company’s ongoing Phase 1/1b clinical trial of BP1001-A in solid tumor patients and reports continued patient progress from the Company’s ongoing Phase 2 triple combination study of prexigebersen in Acute Myeloid Leukemia (AML) (Press release, Bio-Path Holdings, FEB 13, 2025, View Source [SID1234650243]).
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"These continued positive responses mark a significant milestone for Bio-Path as they suggest our DNAbilize platform technology has the potential to produce multiple drug candidates capable of target-specific protein inhibition for over-expressed, disease-causing gene products," said Peter H. Nielsen, President and Chief Executive Officer of Bio-Path. "As previously reported in August 2024, we were thrilled to see that our first patient treated with the higher dose (90 mg/m2) in our Phase 1/1b study of BP1001-A who has shown tumor regression and stable disease continued successful treatment through a tenth treatment cycle. We believe this is significant, particularly considering the heavily pretreated and fragile patient population involved."
"This elderly female patient with gynecologic cancer had previously been treated with multiple lines of chemotherapy along with multiple surgeries for her disease, and only now is showing positive clinical results with BP1001-A treatment. Importantly, we are not seeing the onerous side effects typically seen in patients with advanced solid tumors being treated with standard chemotherapies," continued Mr. Nielsen.
"In addition, we previously noted extended treatment durability in two elderly patients in our Phase 2 triple combination study of prexigebersen, venetoclax and decitabine in AML patients. We are pleased to report that each of these patients remain in complete remission after two years of treatment. These ongoing positive outcomes underscore the potential for prexigebersen to treat fragile AML patients for extended periods. We are particularly pleased with these results, as elderly AML patients are typically unable to tolerate intensive chemotherapy and thus experience very poor clinical outcomes," concluded Mr. Nielsen.
Solid Tumor Patient Response in Second, Higher Dose Cohort – Previously, Bio-Path reported its first patient in the second dose cohort in its Phase 1/1b advanced solid tumor clinical trial experienced a positive response that may signal that this analog of prexigebersen has potential as a new treatment for advanced solid tumors. The patient appears to be doing well on study after failing extensive chemotherapy and surgical treatment for gynecologic cancer, demonstrating a 15% reduction in her primary tumor through six cycles of treatment. Moreover, it appears that these positive outcomes may have contributed to allowing her to continue with rigorous exercise and improved quality of life.
As of January 2025, this patient continues doing well on treatment, recently completing nine cycles and is now in her tenth treatment cycle.
The dose finding portion of the Phase 1/1b trial is comprised of BP1001-A monotherapy with no accompanying chemotherapy. This clinical trial of BP1001-A in patients with advanced or recurrent solid tumors has successfully completed the initial prescribed dose in the first cohort of 60 mg/m2 and began enrollment in the higher dose cohort of 90 mg/m2. The Phase 1b portion of the study is expected to commence after completion of three planned BP1001-A monotherapy dose level cohorts and is intended to assess the safety and efficacy of BP1001-A in combination with 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.
AML Patients Demonstrate Extended Treatment Durability – Previously, Bio-Path reported two patients were identified in the Phase 2 clinical trial treating AML patients who demonstrated continued treatment durability. As of January 2025, both these patients are receiving treatment and are continuing to do well. The first patient is an elderly female who had received 16 cycles of treatment over 21 months when first reported on. She continues on study having received 20 cycles over 26 months and she remains in complete remission. The second patient is an elderly male who had received 12 cycles of treatment over 14 months when first reported on. He continues on study having received 16 cycles over 20 months and remains in complete remission. Both patients are being treated with the triple combination of prexigebersen, decitabine and venetoclax.