To investigate the baseline expression level of HNF1A‐AS1, we conducted qRT–PCR in six osteosarcoma cell lines (HOS, U2OS, SAOS‐2, MG63, SOSP‐9607 and 143B) and two human osteoblasts (hFOB1.19 and NHOst). The gene discussed is HNF1A; the disease is osteosarcoma.