LuCaP tissue microarrays (TMAs) were constructed and stained as previously described (16 (link)). Antibodies directed toward the detection of BCL2 [EPR17509] (Abcam, cat# ab182858) p-CDK1 (Abcam, ab-133463) and Wee1 (Santa Cruz Biotechnologies, sc-5258) were used according to the manufacturer’s instructions. Staining assessment was blinded and the H-score was calculated and averaged across multiple tissue/tumor cores for the same LuCaP PDX line.