Han et al31 showed that LUCAT1 expression was overexpressed in the methotrexate (MTX)‐resistant cells and knockdown expression of LUCAT1 suppressed the osteosarcoma cell proliferation, tumour growth and invasion and some drug resistance‐correlated genes (MRP5, MDR1LRP1) partly through sponging miR‐200c expression. The gene discussed is LUCAT1; the disease is neoplasm.