Previous studies have shown that SETD1A played a key role in embryonic stem cell self‐renewal (Fang et al., 2016) and is required for breast cancer, lung adenocarcinoma, and colorectal cancer development (Fang et al., 2018; Jin et al., 2018; Salz et al., 2015; Salz et al., 2014). The gene discussed is SETD1A; the disease is breast cancer.