miR‐148a performs the common functions of many miRNA species and is implicated in a series of biological processes including cellular proliferation, apoptosis, metastasis and invasion.8 In breast cancer cells, the ERK signalling pathway is the key downstream pathway of hypoxia‐inducible factor‐1α (HIF‐1α) and plays an important role in angiogenesis and cancer development. The gene discussed is HIF1A; the disease is breast carcinoma.