Fanconi anaemia is caused by biallelic (or X-chromosome-linked) inactivation of 1 out of 13 FA genes (Bagby and Alter, 2006; Dorsman et al, 2007; Smogorzewska et al, 2007), including BRCA2 (FANCD1). The gene discussed is FANCA; the disease is Fanconi anemia.