Also, in a study consisted of nine severe ICU admitted Chinese patients with COVID‐19 the lower level of Hb [112 g/L (106‐130.5 g/L)] was detected compared to 18 severe non‐ICU patients [134.5 g/L (114.8‐144 g/L)] (P = .054).4 The gene discussed is GSTM1; the disease is COVID-19.