Warsaw breakage syndrome is a cohesinopathy characterized by cellular defects in sister chromatid cohesion and hypersensitivity to agents that induce replication stress. It is caused by defective DDX11/ChlR1, a XPD helicase family member. In Warsaw breakage syndrome, features of Fanconi anemia (chromosomal breakage) and Roberts syndrome (sister chromatid cohesion defects) coexist, and individuals with this disorder show severe microcephaly, facial dysmorphy, pre- and post- natal growth retardation, and abnormal skin pigmentation.
Category
Congenital malformation
Brite
Human diseases in ICD-11 classification [BR:br08403]
20 Developmental anomalies
Multiple developmental anomalies or syndromes
LD2F Syndromes with multiple structural anomalies, without predominant body system involvement
H00914 Warsaw breakage syndrome
Pathway-based classification of diseases [BR:br08402]
Cellular process
nt06512 Chromosome cohesion and segregation
H00914 Warsaw breakage syndrome