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Spectrum of COL4A5 mutations in Finnish Alport syndrome patients
Author(s) -
Martin Paula,
Heiskari Niina,
Pajari Heli,
GrönhagenRiska Carola,
Kääriäinen Helena,
Koskimies Olli,
Tryggvason Karl
Publication year - 2000
Publication title -
human mutation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.981
H-Index - 162
eISSN - 1098-1004
pISSN - 1059-7794
DOI - 10.1002/1098-1004(200006)15:6<579::aid-humu13>3.0.co;2-k
Subject(s) - alport syndrome , biology , exon , genetics , mutation , gene , microbiology and biotechnology , glomerulonephritis , kidney
Alport syndrome (AS) is a hereditary kidney disorder, mainly caused by mutations in the X‐chromosomal gene (COL4A5) encoding the type IV collagen a5 chain. In this study, detection of COL4A5 mutations was performed in 17 Finnish Alport syndrome families. Regions around the 51 previously known exons, as well as the two recently characterized exons 41A and 41B in COL4A5, were PCR‐amplified from the patient DNA. Direct sequencing of the amplified products was performed and mutations were found in 12 families. None of the mutations involved exons 41A or 41B. Three of the mutations were potential splicing mutations, two of which were studied at the mRNA level. Seven of the mutations were single base substitutions, and two were deletions. In five families, no mutations were found. Hum Mutat 15:579, 2000. © 2000 Wiley‐Liss, Inc.