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J Med Chem. 2019 Feb 28;62(4):2140-2153. doi: 10.1021/acs.jmedchem.8b01857. Epub 2019 Feb 20.

Optimization of Pan-Pim Kinase Activity and Oral Bioavailability Leading to Diaminopyrazole (GDC-0339) for the Treatment of Multiple Myeloma.

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Genentech, Inc. , 1 DNA Way , South San Francisco , California 94080 , United States.
Charles River Discovery Research Services UK Limited (formerly BioFocus), Chesterford Research Park , Saffron Walden , Essex CB10 1XL , United Kingdom.


Pim kinases have been targets of interest for a number of therapeutic areas. Evidence of durable single-agent efficacy in human clinical trials validated Pim kinase inhibition as a promising therapeutic approach for multiple myeloma patients. Here, we report the compound optimization leading to GDC-0339 (16), a potent, orally bioavailable, and well tolerated pan-Pim kinase inhibitor that proved efficacious in RPMI8226 and MM.1S human multiple myeloma xenograft mouse models and has been evaluated as an early development candidate.

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