GSTM1 and spindle cell hemangioma: Interestingly, the above-mentioned trend was obvious only for the left Hb, which is consistent with a previous study showing that compared with the right Hb, the left Hb had more dramatic decreases in the quantity of ATP-binding cassette subfamily B member 1, which is involved in maintaining the steadiness of neural function in patients with SCH (Bernstein et al., 2016).