|Indication:||Solid tumors, malignant and non-malignant hematological indications|
|Mode of action:||CXCR4 antagonism|
|Stage of development:||Phase 3|
|Patent status:||Over 10 patent families cover the BL-8040 composition and methods of use thereof|
BL-8040 is a novel, short peptide that functions as a high-affinity antagonist for CXCR4, which BioLineRx is developing for the treatment of solid tumors, acute myeloid leukemia, or AML, and stem-cell mobilization for bone-marrow transplantation. BL-8040 is being developed by BioLineRx under a worldwide, exclusive license from Biokine Therapeutics.
In January 2016, BioLineRx entered into a collaboration with MSD (a tradename of Merck & Co., Inc., Kenilworth, New Jersey) in the field of cancer immunotherapy. Based on this collaboration, in September 2016 a Phase 2a study was initiated, known as the COMBAT/KEYNOTE-202 study, focusing on evaluating the safety and efficacy of BL-8040 in combination with KEYTRUDA® (pembrolizumab), MSD’s anti-PD-1 therapy, in 37 patients with metastatic pancreatic adenocarcinoma. The study is an open-label, multicenter, single-arm trial designed to evaluate the clinical response, safety and tolerability of the combination of these therapies as well as multiple pharmacodynamic parameters, including the ability to improve infiltration of T cells into the tumor and their reactivity. Partial results from the monotherapy portion of this study showed that BL-8040 increases infiltration of T cells into the tumor, induces an increase in the number of total immune cells in the peripheral blood, and decreases the frequency of peripheral blood regulatory T cells (Tregs). Top-line results from the initial dual combination arm of the trial showed that the combination demonstrated encouraging disease control and overall survival in patients with metastatic pancreatic cancer. In addition, the results showed that BL-8040 significantly improves T-cell infiltration into the tumor and reduces immunosuppression in the tumor microenvironment, especially in combination with KEYTRUDA.
BioLineRx has expanded the COMBAT/KEYNOTE-202 study under the collaboration to include a triple combination arm investigating the safety, tolerability and efficacy of BL-8040, KEYTRUDA and chemotherapy. Regulatory submissions required to conduct the additional arm of the study have been made and its initiation is planned for the fourth quarter of 2018. Results from the new triple combination arm of the study are expected in the second half of 2019.
In August 2016, in the framework of an agreement with MD Anderson Cancer Center, BioLineRx entered into an additional collaboration for the investigation of BL-8040 in combination with KEYTRUDA in pancreatic cancer. The focus of this study, in addition to assessing clinical response, is the mechanism-of-action by which both drugs might synergize, as well as multiple assessments to evaluate the biological anti-tumor effects induced by the combination. BioLineRx is supplying BL-8040 for this Phase 2b study, which commenced in January 2017. Top-line results from this study are anticipated in the first half of 2019.
In September 2016, BioLineRx entered into a collaboration with Genentech, Inc., or Genentech (a member of the Roche Group), in the framework of which both companies would carry out Phase 1b/2 studies investigating BL-8040 in combination with TECENTRIQ® (atezolizumab), Genentech’s anti-PDL1 cancer immunotherapy, in various solid tumors and hematologic malignancies. The clinical study collaboration between us and Genentech is part of MORPHEUS, Roche’s novel cancer immunotherapy development platform. Genentech commenced a Phase 1b/2 study for the treatment of pancreatic cancer in July 2017, as well as a Phase 1b/2 study in gastric cancer in October 2017. As part of the collaboration, Genentech is also considering initiating a third Phase 1b/2 study in lung cancer. These studies will evaluate the clinical response, safety and tolerability of the combination of these therapies, as well as multiple pharmacodynamic parameters.
During 2016, BioLineRx completed and reported on a Phase 2a proof-of-concept trial for the treatment of relapsed or refractory acute myeloid leukemia, or r/r AML, which was conducted on 42 patients at six world-leading cancer research centers in the U.S. and at five premier sites in Israel. The study included both a dose-escalation and a dose-expansion phase. Reports on the trial included detailed, positive safety and response rate data for subjects treated with a combination of BL-8040 and high dose cytarabine, or HiDAC. At the annual meeting of the European Hematology Association in June 2018, BioLineRx presented positive overall survival data from the long-term follow-up part of this study. BioLineRx continues to monitor long-term survival data for patients in the study and, in parallel, is planning its next clinical development steps in this indication.
BioLineRx is currently investigating BL-8040 as a consolidation treatment together with cytarabine (the current standard of care) for AML patients who have responded to standard induction treatment and are in complete remission and, in this regard, are conducting a significant Phase 2b trial in Germany, in collaboration with the German Study Alliance Leukemia Group. The Phase 2b trial is a double-blind, placebo-controlled, randomized, multi-center study aimed at assessing the efficacy of BL-8040 in addition to standard consolidation therapy in AML patients. Up to 194 patients will be enrolled in the trial. The primary endpoint of the study is to compare the relapse-free survival (RFS) time in AML subjects in their first remission during a minimum follow-up time of 18 months after randomization. BioLineRx continues to discuss with its collaboration partners the potential conduct of an interim analysis on this study based on various factors, including the occurrence of a minimum number of reported relapse events and/or exposure to provide a reasonable statistical powering for the analysis. The Company’s current best estimate for the timing of such potential interim analysis is mid-2019, with top-line results from the trial expected in 2021.
In September 2017, BioLineRx initiated a Phase 1b/2 trial in AML, known as the BATTLE trial, under the collaboration with Genentech referred to above in "― Solid tumors.” The trial will focus on the maintenance treatment of patients with intermediate- and high-risk AML who have achieved a complete response following induction and consolidation therapy. Up to 60 patients are planned to be enrolled in this single arm, open-label study, planned to take place at approximately 22 sites in the U.S., Europe and Israel. Top-line results from this study are expected in 2021.
In March 2015, BioLineRx reported successful top-line safety and efficacy results from a Phase 1 safety and efficacy trial for the use of BL-8040 as a novel stem-cell mobilization treatment for allogeneic bone marrow transplantation at Hadassah Medical Center in Jerusalem.
In March 2016, BioLineRx initiated a Phase 2 trial for BL-8040 for allogeneic stem-cell transplantation, conducted in collaboration with the Washington University School of Medicine, Division of Oncology and Hematology. Initial results of this study announced in March 2017 show that a single injection of BL-8040 mobilized sufficient amounts of cells required for transplantation at a level of efficacy similar to that achieved by using 4-6 injections of G-CSF, the current standard of care. Topline results of this study are now expected in mid-2018, as a result of certain delays in study recruitment in connection with the addition of two sites to the study and the regulatory filings associated therewith.
In December 2017, BioLineRx commenced a randomized, controlled Phase 3 registrational trial for BL-8040, known as the GENESIS trial, for the mobilization of HSCs for autologous transplantation in patients with multiple myeloma. The trial began with a lead-in period for dose confirmation, which was to include 10-30 patients and progress to the placebo-controlled main part, which is designed to include 177 patients in more than 25 centers. Top-line results of the randomized, placebo-controlled main part of the study are expected in 2020.
In addition to the above, BioLineRx is currently conducting, or planning to conduct, a number of investigator-initiated, open-label studies in a variety of indications, to support the interest of the scientific and medical communities in exploring additional uses for BL-8040. These studies serve to further elucidate the mechanism of action for BL-8040.
In September 2013, the FDA granted an Orphan Drug Designation to BL-8040 as a therapeutic for the treatment of AML; and in January 2014, the FDA granted an Orphan Drug Designation to BL-8040 as a treatment for stem cell mobilization. In January 2015, the FDA modified this Orphan Drug Designation for BL-8040 for use either as a single agent or in combination with G-CSF.
In vitro and in vivo data show that BL-8040 binds to CXCR4 at the low nanomolar range (1-10nM) and occupies it for prolonged periods of time (>24h). Characterization of the CXCR4 antagonism action of BL-8040 in comparison to other CXCR4 antagonists revealed that, unlike other compounds from the same class, BL-8040 acts as an antagonist as well as an inverse agonist. This activity leads to decreased autonomous signaling of CXCR4 and suggests activity against constitutively active variants.
BL-8040 inhibits the growth of various tumor types including multiple myeloma, non-Hodgkin’s lymphoma, leukemia, non-small cell lung carcinoma, neuroblastoma and melanoma. BL-8040 significantly and preferentially stimulated apoptotic cell death of malignant cells (multiple myeloma, non-Hodgkin’s lymphoma and leukemias). Significant synergistic and/or additive tumor cell killing activity has been observed in-vitro and in-vivo when tumor cells were treated with BL-8040 together with Rituximab, Bortezomib, Imatinib, Cytarbine, BCL-2 inhibitor ABT-199 and the FLT-3 inhibitor AC-220 (in NHL, MM, CML, AML, and AML-FLT3-ITD models, respectively). BL-8040 also mobilizes cancer cells as well as neutrophils and progenitor cells from the bone marrow to the peripheral blood.
In November 2017, BioLineRx disclosed preclinical data supporting BL-8040 as robust mobilizer of hematopoietic stem cells, or HSCs, associated with long-term engraftment.
For more information: info@BioLineRx.com