On November 6, 2019 Eli Lilly and Company (NYSE: LLY) reported that multiple abstracts from its LOXO-305 program have been accepted for presentation at the 61st American Society of Hematology (ASH) (Free ASH Whitepaper) Annual Meeting and Exposition to be held December 7-10, 2019 in Orlando, Florida (Press release, Eli Lilly, NOV 6, 2019, View Source [SID1234550457]). LOXO-305 is a next-generation, highly selective, non-covalent BTK inhibitor.
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There will be two LOXO-305 oral presentations. The first will provide an analysis of interim Phase 1 clinical trial data from the ongoing first-in-human, Phase 1/2 Trial of LOXO-305 in patients with pretreated B-cell malignancies. The second oral presentation will provide a preclinical analysis of LOXO-305’s activity in ibrutinib-resistant CLL, based on patient-derived samples. Finally, a poster presentation will provide a preclinical analysis of LOXO-305’s activity against diverse BTK C481 substitution mutations.
The presentation details, including dates and times, are highlighted below:
LOXO-305 Oral Presentation Session Date & Time: Sunday, December 8, 2019, 4:30-6:00 pm ET
Title: Results from a First-in-Human, Proof-of-Concept Phase 1 Trial in Pretreated B-Cell Malignancies for Loxo-305, a Next-Generation, Highly Selective, Non-Covalent BTK Inhibitor
Abstract Number: 501
Session Title: CLL: Therapy, excluding Transplantation: BTK Inhibitors and CAR T Cells in CLL
Presenter: Anthony Mato
LOXO-305 Oral Presentation Session Date & Time: Sunday, December 8, 2019, 12:00-1:30 pm ET
Title: LOXO-305: Targeting C481S Bruton Tyrosine Kinase in Patients with Ibrutinib-Resistant CLL
Abstract Number: 478
Session Title: CLL: Biology and Pathophysiology, excluding Therapy: Mechanisms of Response and Resistance to Targeted Agents
Presenter: Aishath Naeem
LOXO-305 Poster Presentation Session Date & Time: Monday, December 9, 2019, 6:00-8:00 pm ET
Title: Loxo-305, a Highly Selective and Non-Covalent Next Generation BTK Inhibitor, Inhibits Diverse BTK C481 Substitution Mutations
Abstract Number: 4644
Session Title: Chemical Biology and Experimental Therapeutics: Poster III
Presenter: Eliana Gomez
About LOXO-305
LOXO-305 is an investigational, novel, highly selective, non-covalent Bruton’s tyrosine kinase (BTK) inhibitor. BTK plays a key role in the B-cell antigen receptor signaling pathway, which is required for the development, activation and survival of normal white blood cells, known as B-cells, and malignant B-cells. BTK is a validated molecular target found across numerous B-cell leukemias and lymphomas including chronic lymphocytic leukemia, Waldenstrom’s macroglobulinemia, mantle cell lymphoma and marginal zone lymphoma. Currently available BTK inhibitors irreversibly inhibit BTK and the long-term efficacy of these therapies has been limited by acquired resistance, most commonly through BTK C481 mutations, and intolerance, due to off target inhibition of other cellular targets. LOXO-305 was designed to reversibly bind BTK, preserve activity in the presence of the C481 acquired resistance mutations, and avoid off-target kinases that have complicated the development of both covalent and investigational non-covalent BTK inhibitors. Interested patients and physicians can contact the Loxo Oncology Physician and Patient BTK Clinical Trial Hotline at 1-855-LOXO-305 or email [email protected].
About the LOXO-305 Phase 1/2 trial
This first-in-human, global, multi-center Phase 1/2 trial evaluates LOXO-305 as a single agent in patients with previously treated chronic lymphocytic leukemia (CLL), small lymphocytic lymphoma (SLL), or non-Hodgkin’s lymphomas (NHL). The primary objective of the Phase 1 portion of the trial is to determine the maximum tolerated dose or recommended Phase 2 dose. Key secondary objectives include measures of safety, pharmacokinetics, and anti-tumor activity (i.e. Overall Response Rate and Duration of Response, as determined by appropriate histology-specific response criteria). The trial includes a Phase 1 dose escalation phase and a Phase 2 dose expansion phase. The Phase 1 dose escalation enrolls patients with CLL/SLL or NHL who have received at least two prior lines of therapy and have progressed or are intolerant to standard of care. In the Phase 2 dose expansion phase, six cohorts are planned to allow for the characterization of the preliminary anti-tumor activity of LOXO-305: 1) CLL/SLL failed prior BTK inhibitor with BTK C481 mutation; 2) CLL/SLL failed prior BTK inhibitor without BTK C481 mutation; 3) Waldenstrom’s macroglobulinemia (WM), mantle cell lymphoma (MCL) or marginal zone lymphoma (MZL) failed prior BTK inhibitor with BTK C481 mutation; 4) WM, MCL or MZL failed prior BTK inhibitor without BTK C481 mutation; 5) CLL/SLL, WM, MCL or MZL intolerant to prior BTK inhibitor; 6) CLL/SLL, WM, MCL or MZL failed prior BTK inhibitor with unknown BTK C481 mutation status and other CLL/SLL, WM, CML, MZL or other NHL patients not meeting the definitions of Cohorts 1 through 5.