A Dose Escalation Study to Investigate the Safety, Pharmacokinetics (PK), Pharmacodynamics (PD) and Clinical Activity of GSK525762 in Subjects With Relapsed, Refractory Hematologic Malignancies

Summary

This is an open-label repeat dose, multicenter, 2-part study to determine the maximum tolerated dose (MTD) and the recommended Phase 2 dose (RP2D) for GSK525762 given once-daily (QD) orally. Part 1 of the study is a dose escalation phase to select the recommended Part 2 dose (RP2D) based on the safety, PK, and PD profiles observed after oral administration of GSK525762. Eligible subjects with select relapsed refractory hematological malignancies (acute myeloid leukemia \[AML\], non-Hodgkin's Lymphoma \[NHL\]and multiple myeloma \[MM\]), will be enrolled in the QD and/or BID dosing cohorts until a MTD is established. Subjects may continue treatment in the study until disease progression, unacceptable toxicity, or withdrawal of consent. . Upon determination of the MTD, twice daily (BID) dosing cohorts may be opened to collect additional safety data and evaluate the preliminary efficacy of GSK525762 administered BID. Part 2 will explore clinical activity at the MTD or RP2D; separate expansion cohorts will be planned for acute myeloid leukemia (AML), non-Hodgkin's Lymphoma (NHL, including an exploratory sub-cohort of subjects with myc and B-Cell Leukemia (BCL)2 and/or BCL6 rearrangements/overexpression \[double- and triple-hit lymphoma\]), and multiple myeloma (MM). This is the first study of this agent to be conducted in subjects with these relapsed and/or refractory hematological malignancies for which no standard therapies are anticipated to result in a durable remission.

Timeline

Start

2014-05-14

Primary completion

2020-04-30

Completion

2020-04-30

Publications

• Background Bell C; Fennell K; Chan YC; Rambow F; Yeung M; Vassiliadis D; Lara L; Yeh P; Martelotto L; Rogiers A; Kremer B; Barbash O; Mohammad H; Johanson T; Burr M; Dhar A; Karpinich N; Tian L; Tyler D; MacPherson L; Shi J; Pinnawala N; Fong CY; Papenfuss A; Grimmond S; Dawson SJ; Allan R; Kruger R; Vakoc C; Goode D; Naik S; Gilan O; Lam E; Marine JC; Prinjha R; and Dawson M.Enhancer remodeling overcomes therapeutic resistance driven by epigenetic evolution in cancer.Nature.2019;
• Dawson MA, Borthakur G, Huntly BJP, Karadimitris A, Alegre A, Chaidos A, Vogl DT, Pollyea DA, Davies FE, Morgan GJ, Glass JL, Kamdar M, Mateos MV, Tovar N, Yeh P, Delgado RG, Basheer F, Marando L, Gallipoli P, Wyce A, Krishnatry AS, Barbash O, Bakirtzi E, Ferron-Brady G, Karpinich NO, McCabe MT, Foley SW, Horner T, Dhar A, Kremer BE, Dickinson M. A Phase I/II Open-Label Study of Molibresib for the Treatment of Relapsed/Refractory Hematologic Malignancies. Clin Cancer Res. 2023 Feb 16;29(4):711-722. doi: 10.1158/1078-0432.CCR-22-1284.

Drugs

Indications