Reconstitution rate of absolute CD8+ T lymphocyte counts affects overall survival after pediatric allogeneic hematopoietic stem cell transplantation.

Immune reconstitution after allogeneic stem cell transplantation protects against opportunistic infections and disease relapse. Identifying the most protective lymphocyte subset would have implications of adoptive immunotherapy. We followed up a case series of 34 allogeneic transplantations for pediatric leukemias, aplastic anemias, or solid tumors.