Indeed, increased ALDH activity was detected in lnc030‐high breast cancer tissues compared with that in lnc030‐low tumor tissues (Figure 2H), and the breast cancer cells isolated from breast tumor with high lnc030 expression showed higher mammosphere‐formation abilities in comparison to those with low lnc030 expression (Figure 2I). The gene discussed is SQLE-DT; the disease is breast neoplasm.