RCOR1 loss–associated signature is associated with unfavorable outcome. (A) The heat map produced from unsupervised clustering on the BCCA cohort using the RCOR1 loss–associated gene expression signature (n = 233). (B) Kaplan-Meier analyses performed on the RCOR1-low vs RCOR1-high expression clusters in the BCCA study cohort. (C) Kaplan-Meier analyses performed on the RCOR1-low vs RCOR1-high expression clusters in the Lenz rediscovery cohort. N/A, not available.