Laboratory workup (Table 1) was noteworthy: severe normocytic normochromic anemia with a hematocrit (Ht) of 11% and hemoglobin (Hb) of 3.8 gr/dL, Mean Corpuscular Volume (MCV) 84.5 fL, and increased Red Blood Cell Distribution Width (RDW) 20%. Here, GSTM1 is linked to anemia.