Secondary TWAS analysis of the endometrioid endometrial cancer subtype using S-MultiXcan identified five genes, three of which (CYP19A1, HEY2, and SKAP1) passed the colocalization threshold (Supplementary Table 1); all three genes had also been identified in the main S-MultiXcan-colocalization analysis using all endometrial cancer cases (Table 1). The gene discussed is HEY2; the disease is endometrial cancer.