Outcomes of Pediatric Liver Transplantation in Japan: A Report from the Registry of the Japanese Liver Transplantation Society

Background. The Japanese Liver Transplantation Society (JLTS), a cooperative research consortium, was established in 1980 to characterize and follow trends in patient characteristics and graft survival among all liver transplant patients in Japan. This study analyzed factors that may affect the current outcomes of pediatric patients who undergo liver transplantation (LT) by evaluating one of the largest pediatric LT cohorts in the world. Methods. Between November 1989 and December 2018, 3347 pediatric patients underwent LT in Japan. The survival outcomes of each donor and recipient variant were evaluated. Results. The procedures performed during the study period included living donor LT (LDLT; n = 3271), deceased donor LT (DDLT; n = 69), and domino LT (n = 7). There were 1510 male (45.1%) and 1837 female (54.9%) recipients with a median age of 1.7 y (range: 9 d to 17.9 y). The graft survival rates at 1, 10, 20, and 30 y were 88.9%, 82.2%, 77.1%, and 75.4%, respectively. Donor age, donor BMI, blood type incompatibility, recipient age, etiology of liver disease, transplant type, center experience, and transplant era were found to be significant predictors of overall graft survival. LDLT is a major treatment modality for the end-stage liver disease in children; DDLT and domino LT were applied as alternative treatments for LDLT in patients with specific pediatric liver diseases that are considered to have a poor prognosis following LDLT. Conclusions. Satisfactory long-term pediatric patient survival outcomes were achieved in the JLTS series, and we should continue to promote the deceased donor organ transplantation program in Japan.

Automated summary

The study analyzed factors influencing outcomes of pediatric liver transplantation in Japan. Results showed that donor age, donor BMI, blood type incompatibility, recipient age, etiology of liver disease, transplant type, center experience, and transplant era were significant predictors of overall graft survival. The study concluded that satisfactory long-term pediatric patient survival outcomes were achieved in the JLTS series, and promoting deceased donor organ transplantation program in Japan should continue.