Laboratory examinations showed an increased thyroid-stimulating hormone, decreased free thyroxine, and positive anti-thyroglobulin antibody titres, as well as elevation of creatine phosphokinase, myoglobin, lactate dehydrogenase, serum aspartate aminotransferase, hypercholesterolemia, and a basal serum prolactin near the upper limit of normal. The gene discussed is PRL; the disease is familial hypercholesterolemia.