Recovery from marked altered consciousness in a patient with adult-onset type II citrullinemia diagnosed by DNA analysis and treated with a living related partial liver transplantation.

A 21-year-old woman was admitted with altered consciousness and hyperammonemia. She was diagnosed as having adult-onset type II citrullinemia (CTLN2) by DNA analysis. The patient had mutations of the SLC25A13 gene, which were compound heterozygotes of 851 del 4 and IVS11+1G>A. CTLN2 has a poor prognosis, in spite of various intensive medications, and we performed a living related partial liver transplantation (LRLT). Over a 2-year follow-up, the patient has been well. CTLN2 can be diagnosed by the DNA analysis and can be treated by LRLT.