In our study, prevalence of anaemia (Hb<11g%) was 1696/ 3723 cases (50·1%);—mild anaemia (10–10·9gms%) in 830 (24·5%); moderate anaemia (7–9·9gms %) in 758 (22·5%) and severe anaemia (<7gms %) in 108 cases (3·2%). The gene discussed is GSTM1; the disease is anemia (phenotype).