GSTM1 and anemia (phenotype): By 2015, when she was 32 years old, there was a mildly affected complete blood count showing microcytic hypochromic anemia (Hb: 11.6 g/dL, MCV: 70.6 fL, MCH: 22.2 pg) (see Table 2) but no further investigations were initiated as these blood tests were part of a routine check-up requested by the patient, who was not seeking medical care at the time.