Genetics of Paget's disease of bone.
Paget's disease of bone is a chronic bone disease that affects up to 3% of Caucasians older than 55 years. The cause of Paget's disease is unknown but involves genetic factors. Familial cases display an autosomal dominant pattern of inheritance with incomplete penetrance. Genetic heterogeneity has been demonstrated and eight potential susceptibility loci identified. There is sound evidence incriminating Sequestosome 1 (SQSTM1) on the long arm of chromosome 5 (5q35-qter), of which nine mutations have been described in Paget's disease of bone. These mutations are located in exons 7 and 8, which encode a highly conserved ubiquitin-binding domain. The prevalence of SQSTM1 mutations is about 10% in France. Tests for SQSTM1 mutations should be done in patients with Paget's disease of bone, even where the family history is negative. Detection of a mutation allows evaluation of family members to ensure early diagnosis of the disease before complications develop.
Clinical genetics unit, hôpital Lariboisière, Paris, France. laetitia.michou@lrb.ap-hop-paris.fr
Laëtitia
L
Michou
Corinne
C
Collet
Jean-Louis
JL
Laplanche
Philippe
P
Orcel
François
F
Cornélis
D048868:Adaptor Proteins, Signal Transducing; D025063:Chromosome Disorders / Q000235:genetics; D002895:Chromosomes, Human, Pair 5 / Q000235:genetics; D005091:Exons / Q000235:genetics; D005799:Genes, Dominant; D018740:Genetic Heterogeneity; D020022:Genetic Predisposition to Disease; D005820:Genetic Testing; D006801:Humans; D009154:Mutation; D010001:Osteitis Deformans / Q000175:diagnosis / Q000235:genetics* / Q000503:physiopathology; D011506:Proteins / Q000235:genetics*; D000071456:Sequestosome-1 Protein
D048868:Adaptor Proteins, Signal Transducing; D011506:Proteins; C099718:SQSTM1 protein, human; D000071456:Sequestosome-1 Protein