inborn error of immunity hereditary disease hereditary neoplastic syndrome lymphoproliferative syndrome https://github.com/monarch-initiative/mondo/issues/6116 GARD:0020633 A disorder characterized by proliferation of lymphocytes at various stages of differentiation. Lymphoproliferative disorders can be neoplastic (clonal, as in lymphomas and leukemias) or reactive (polyclonal, as in infectious mononucleosis). NCIT:C9308 lymphoproliferative syndrome SCTID:277466009 MEDGEN:6162 Orphanet:238510 lymphoproliferative disorder MESH:D008232 UMLS:C0024314 MONDO:0016537 OMIMPS:308240 DOID:0060704