disease has basis in dysfunction of FANCB Fanconi anemia complementation group b DOID:0111098 FA2 FACB FANCB Fanconi Anemia, complementation group type B Fanconi anemia caused by mutations of the FANCB gene. This gene encodes the protein for complementation group B. Fanconi anemia complementation group type B Fanconi anemia, complementation group B Fanconi pancytopenia type 2 Fanconi pancytopenia, type 2 MESH:C564497 MONDO:0010351 NCIT:C125703 OMIM:300514 UMLS:C1845292 facb Fanconi anemia