GSTM1 and anemia (phenotype): Mohs surgery was performed for the basocellular carcinoma, and further investigations related to HHT revealed a mild anemia (hemoglobin (Hb)—10.9 mg/dL, mean corpuscular volume (MCV)—76 fL with a normal interval of 80–96 fL, and iron deficit at 28 mg/dL).