On May 18, 2017 ArQule, Inc. (Nasdaq: ARQL) reported that preclinical data for ARQ 531 in diffuse large B-cell lymphoma (DLBCL) in vitro and in vivo tumor models will be presented on June 23, 2017 at EHA (Free EHA Whitepaper) Congress in Madrid, Spain (Press release, ArQule, MAY 18, 2017, View Source [SID1234519210]). The data supports clinical trials with ARQ 531 in the ibrutinib resistant patient population. A phase 1 trial with ARQ 531 in patients with B-cell malignancies refractory to other therapeutic options, including ibrutinib, is planned to commence by the third quarter of 2017. ARQ 531 is an investigational, orally bioavailable, potent and reversible inhibitor of both wild type and C481S-mutant Bruton’s tyrosine kinase (BTK). Schedule your 30 min Free 1stOncology Demo! Presentation Details
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Friday, June 23, 2017: Non-Hodgkin and Hodgkin Lymphoma – Biology
ARQ 531
Abstract E1400
ARQ 531, a reversible BTK inhibitor, demonstrates potent anti-tumor activity in ABC-DLBCL and GCB-DLBCL
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Time: 9:30 AM CET
About BTK and ARQ 531
ARQ 531 is an investigational, orally bioavailable, potent and reversible Bruton’s tyrosine kinase (BTK) inhibitor. Biochemical and cellular studies have shown that ARQ 531 inhibits both the wild type and C481S-mutant forms of BTK. The C481S mutation is a known emerging resistance mechanism for first generation irreversible BTK inhibitors. In preclinical studies ARQ 531 has demonstrated high oral bioavailability as well as good ADME, pharmacokinetic and metabolic properties. The company plans to initiate a phase 1 trial by the third quarter of 2017. BTK is a therapeutic target that has been clinically proven to inhibit B-cell receptor signaling in blood cancers.