Fanconi anemia, complementation group bOMIM Phenotype
Preferred Label : Fanconi anemia, complementation group b;
Symbol : FANCB;
CISMeF acronym : FACB; FANCB; FA2;
Type : Phenotype, molecular basis known;
Alternative titles and symbols : Fanconi pancytopenia, type 2; FA2; FACB;
Description : Fanconi anemia (FA) is a clinically and genetically heterogeneous disorder that causes
genomic instability. Characteristic clinical features include developmental abnormalities
in major organ systems, early-onset bone marrow failure, and a high predisposition
to cancer. The cellular hallmark of FA is hypersensitivity to DNA crosslinking agents
and high frequency of chromosomal aberrations pointing to a defect in DNA repair (summary
by Deakyne and Mazin, 2011). Patients with FANCB mutations often present with multiple
additional congenital anomalies, including the constellation of features designated;
Inheritance : X-linked recessive;
Molecular basis : Caused by mutation in the Fanconi anemia, complementation group B gene (FANCB, 300515.0001);