A boy of 8 years, went to the doctor with complaints of fatigue, decreased appetite, icteric sclera, abdominal pain. The neonatal period was prolonged jaundice. In physical development does not lag behind. Objectively established: pale skin, mucous membranes shells and sclera icteric. Liver - +2 cm, slightly painful on palpation. Defecation and urination are normal. During a laboratory blood test found: erythrocytes - 4,5 × 1012/l, hemoglobin - 115 g/l, leukocytes - 7 × 10 ^ g/l, speed erythrocyte sedimentation rate - 8 mm/h, direct bilirubin - 10 μmol/l, indirect - 39 μmol/l, aspartate aminotransferase (AST) - 17 u/l, alanine aminotransferase (ALT) - 21 U / l. Which is the diagnosis most likely?