To elucidate whether SNHG1 influences the tumorigenesis and metastasis of BC in vivo, EJ cells stably transfected with sh‐NC vectors or sh‐SNHG1 plasmids (sh‐SNHG1 #1 and sh‐SNHG1 #2) were injected subcutaneously into nude mice. The gene discussed is SNHG1; the disease is breast cancer.