The DNA Ligase IV Syndrome R278H Mutation Impairs B Lymphopoiesis via Error-Prone Nonhomologous End-Joining. Park J, Welner RS, Chan MY, et al. The DNA Ligase IV Syndrome R278H Mutation Impairs B Lymphopoiesis via Error-Prone Nonhomologous End-Joining. J Immunol. 2016;196(1):244-55. doi:10.4049/jimmunol.1403099 Read more