Based on these analyses, we selected four KDM4C-amplified basal breast cancer cell lines (SUM149, HCC1954, HCC38 and HCC70) and four KDM4C-non-amplified lines (HCC1806, HDQP1, HCC1143 and HCC1569) to assess the functional relevance of KDM4C in basal breast cancer (Extended Data Fig. 2a,b). Here, KDM4C is linked to breast cancer.