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ID: ALA5223188
Journal: ACS Med Chem Lett
Title: Discovery of OICR12694: A Novel, Potent, Selective, and Orally Bioavailable BCL6 BTB Inhibitor.
Authors: Mamai A, Chau AM, Wilson BJ, Watson ID, Joseph BB, Subramanian PR, Morshed MM, Morin JA, Prakesch MA, Lu T, Connolly P, Kuntz DA, Pomroy NC, Poda G, Nguyen K, Marcellus R, Strathdee G, Theriault B, Subramaniam R, Mohammed M, Abibi A, Chan M, Winston J, Kiyota T, Undzys E, Aman A, Austin N, Du Jardin M, Packman K, Phillippar U, Attar R, Edwards J, O'Meara J, Uehling DE, Al-Awar R, Privé GG, Isaac MB.
Abstract: B cell lymphoma 6 (BCL6), a highly regulated transcriptional repressor, is deregulated in several forms of non-Hodgkin lymphoma (NHL), most notably in diffuse large B-cell lymphoma (DLBCL). The activities of BCL6 are dependent on protein-protein interactions with transcriptional co-repressors. To find new therapeutic interventions addressing the needs of patients with DLBCL, we initiated a program to identify BCL6 inhibitors that interfere with co-repressor binding. A virtual screen hit with binding activity in the high micromolar range was optimized by structure-guided methods, resulting in a novel and highly potent inhibitor series. Further optimization resulted in the lead candidate 58 (OICR12694/JNJ-65234637), a BCL6 inhibitor with low nanomolar DLBCL cell growth inhibition and an excellent oral pharmacokinetic profile. Based on its overall favorable preclinical profile, OICR12694 is a highly potent, orally bioavailable candidate for testing BCL6 inhibition in DLBCL and other neoplasms, particularly in combination with other therapies.
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