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Familial intrahepatic cholestasis associated with progressive neuromuscular disease and vitamin E deficiency.

Three Japanese patients with familial progressive intrahepatic cholestasis developed complications involving neurologic abnormalities characterized by ataxia and pigmentary retinopathy. Serum vitamin E concentrations were extremely low in all patients, suggesting a long-term vitamin E deficiency. High dose oral supplementation of alpha-tocopherol produced normal serum vitamin E levels in two patients. Parenteral administration of vitamin E resulted in no clinical improvement in one patient who first received the treatment at 14 years of age. In the other two patients, the progression of neurological abnormalities was slowed by vitamin E supplementation. Cholestyramine treatment resulted in an apparent decrease in serum vitamin E levels despite oral alpha-tocopherol supplementation.