Laboratory workup revealed normocytic anemia (6.9 g/dL), thrombocytopenia (54 x 10^9/L), mild hyponatremia (131 mmol/L), total bilirubin of 2.7 mg/dL, aspartate aminotransferase (AST) of 148 U/L, and normal alanine aminotransferase (ALT). The gene discussed is GPT; the disease is anemia.