Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

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Good, D.A. et al.

Good, Busfield, Fletcher, Lovelock, Duffy, Kesting, Andersen, Shaw,

Identification of SQSTM1 mutations in familial Paget's disease in Australian pedigrees.

We have conducted a genome-wide scan on a pedigree containing 372 adult members, of whom 49 have PDB. In the present study, we report linkage of a large pedigree to the PDB3 region on chromosome 5q35-qter with a peak multipoint LOD score of 6.77. Sequestosome 1 (SQSTM/ p62) has been identified as the causative PDB gene in this region. Six sequestosome 1 mutations have been described to date. Four mutations have been identified in exon 8, 1210delT and 1215delC both resulting in premature stop codon at amino acid 394, 1215C to T (P392L), 1224insT (E396X), one mutation in exon 7, 1200C to T (P387L) and a G to A splice junction mutation at IVS7+1. These mutations cluster in the C terminus of the protein and are predicted to disrupt the ubiquitin binding properties of sequestosome 1. Sequence analysis of the gene encoding sequestosome 1 revealed a single base pair deletion (1215delC) segregating with the majority of affected members in the pedigree. This deletion introduces a stop codon at position 394, resulting in premature termination of the protein (L394X) and loss of the ubiquitin-associated binding domain. Screening of affected members from 10 further PDB families identified the previously reported P392L mutation in one family. No SQSTM1/ p62 coding mutations were found in the remaining 9 families or in 113 age-matched controls.[1]

References

Identification of SQSTM1 mutations in familial Paget's disease in Australian pedigrees. Good, D.A., Busfield, F., Fletcher, B.H., Lovelock, P.K., Duffy, D.L., Kesting, J.B., Andersen, J., Shaw, J.T. Bone (2004) [Pubmed]

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