has material basis in germline mutation in XIAP X-linked lymphoproliferative disease due to XIAP deficiency https://github.com/monarch-initiative/mondo/issues/4521 https://rarediseases.info.nih.gov/diseases/10916/x-linked-lymphoproliferative-syndrome-2 https://www.malacards.org/card/lymphoproliferative_syndrome_x_linked_2 XIAP deficiency MESH:C564469 Orphanet:538934 NCIT:C126295 OMIM:300635 DOID:0060706 lymphoproliferative syndrome, X-linked, 2 XIAP-related lymphoproliferative disease, X-linked MONDO:0010385 X-linked lymphoproliferative syndrome type 2 X-linked lymphoproliferative disease due to XIAP deficiency MEDGEN:336848 A condition of decreased or absent presence of baculoviral IAP repeat-containing protein 4. Deficiency of this protein is associated with X-linked lymphoproliferative syndrome 2. GARD:0010916 lymphoproliferative syndrome, X-linked, type 2 lymphoproliferative syndrome, X-linked, 2, X-linked recessive XIAP deficiency/XLPs Xiap deficiency XLP2 UMLS:C1845076 X-linked lymphoproliferative syndrome X-linked recessive disease