Twenty-three recent cases of orthotopic liver transplantation were individually reviewed in an effort to determine why survival had declined from the 50% one-year survival rate of an immediately precedent series. In the series of 23, only six (26%) achieved one-year survival. Faulty case selection, technical complications, the use of damaged organs, and complications of immunosuppression were the main causes of death. Attention was directed to the possible use of preoperative lymphoid depletion to improve the effectiveness and safety of immunosuppression. Our total experience with orthotopic liver transplantation up to January 1978 has been reported 1 with a minimum potential follow-up of at least one year for every recipient. As these 141 cases were compiled there was a slow improvement in the one-year survival rate, which in the last 30 patients reached the 50% level. We report here a subsequent, less encouraging experience in 23 more consecutive cases. An analysis of these recent patients was undertaken to determine the reasons for the recent increase in mortality, and to consider further policy changes in case selection and management from which to mount renewed efforts. CASE MATERIAL AND METHODS Underlying Liver Disease The Table gives information on the 23 cases. There were 12 adults and 11 children. Among the adults the most common diagnosis was chronic aggressive hepatitis (six examples). Two patients with sclerosing cholangitis had had previous operations, and one (orthotopic transplant [OT] patient 149) had a residual duodenal fistula. There was one example each of protoporphyria, secondary biliary cirrhosis from an old choledochal cyst, primary biliary cirrhosis, and alcoholic cirrhosis. Of the five children with biliary atresia, three had undergone unsuccessful Kasai procedure. Four children had alpha 1-antitrypsin deficiency and one had congenital hepatic fibrosis. The final pediatric patient was a 15-year-old girl (OT 150) whose duct system had been excised five years previously during right hepatic lobectomy for trauma. Repeated attempts at duct