Because immune cells that express Siglec 7 are more powerful functionally than the counterparts without Siglec 7 [70], killing of the immune cells by α2‐6sialo mucin O‐glycans induced by alcohol can help shield benign cancer cells from immune surveillance and enable them to survive and thrive in alcohol abusers until they advance to the malignant stage. The gene discussed is MUC5AC; the disease is alcohol drinking.