4FJY:
reference: Discovery and in Vivo Evaluation of Dual PI3Kbeta/delta Inhibitors., Gonzalez-Lopez de Turiso F, Shin Y, Brown M, Cardozo M, Chen Y, Fong D, Hao X, He X, Henne K, Hu YL, Johnson MG, Kohn T, Lohman J, McBride HJ, McGee LR, Medina JC, Metz D, Miner K, Mohn D, Pattaropong V, Seganish J, Simard JL, Wannberg S, Whittington DA, Yu G, Cushing TD, J Med Chem. 2012 Sep 13;55(17):7667-85. Epub 2012 Aug 29. PMID: 22876881

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