_:vb50938077 "url:http://www.ncbi.nlm.nih.gov/gene/3981"^^ . _:vb50938077 "url:http://omim.org/entry/606593"^^ . _:vb50938077 . _:vb50938077 "A combined T cell and B cell immunodeficiency that has_material_basis_in a mutation in the LIG4 gene, a DNA ligase, encoding a protein essential for V(D)J recombination and DNA double-strand break (DSB) repair through nonhomologous end joining (NHEJ). Patients present with immunodeficiency and developmental and growth delay."^^ . _:vb50938077 . _:vb50938077 . _:vb50938077 . _:vb50938077 .