PMID- 10200984 OWN - NLM STAT- MEDLINE DCOM- 19990714 LR - 20091119 IS - 0085-2538 (Print) IS - 0085-2538 (Linking) VI - 55 IP - 4 DP - 1999 Apr TI - Mutational analysis within the 3' region of the PKD1 gene. PG - 1225-33 AB - BACKGROUND: Autosomal dominant polycystic kidney disease (ADPKD) is one of the most common genetic diseases in humans, affecting 1 out of 1000 individuals. At least three different genes are involved in this disease. The search for mutations in PKD1 is complicated because most of the transcript is encoded by a genomic region reiterated more proximally on chromosome 16, and no prevalent mutation has been reported. METHODS: We have screened DNA from exon 43 through exon 46 and intron 40 of the PKD1 sequence by single-stranded conformational polymorphism (SSCP) analysis in 175 ADPKD patients. RESULTS: We have found 25 differences with respect to the reported PKD1 DNA sequence, seven of which are mutations (Q4041X, Q4124X, IVS44-1G-->C, IVS45-1G-->A, 12801del28, R4275W, and Q4224P). We found different phenotypical expressions of the same mutation in the families studied. We have detected several common polymorphisms, and some of them cosegregate, suggesting a common origin of these alleles in PKD1. CONCLUSIONS: The detection of only seven mutations in 175 unrelated ADPKD patients for this region of the PKD1 analyzed suggests that mutations could be widespread throughout all of the gene and that a prevalent mutation is not expected to occur. The identified PKD1 missense mutations may help to refine critical regions of the protein. Until a quicker and more sensitive method for the detection of mutations becomes available, linkage studies will continue to be the basis for the molecular diagnosis of ADPKD families. FAU - Badenas, C AU - Badenas C AD - Department of Genetics, Institut d'Investigacions Biomediques August Pi i Sunyer, University of Barcelona, Spain. FAU - Torra, R AU - Torra R FAU - San Millan, J L AU - San Millan JL FAU - Lucero, L AU - Lucero L FAU - Mila, M AU - Mila M FAU - Estivill, X AU - Estivill X FAU - Darnell, A AU - Darnell A LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Kidney Int JT - Kidney international JID - 0323470 RN - 0 (Proteins) RN - 0 (TRPP Cation Channels) RN - 0 (polycystic kidney disease 1 protein) SB - IM MH - Adult MH - Aged MH - Amino Acid Substitution/genetics MH - DNA Mutational Analysis MH - Female MH - Genetic Testing MH - Humans MH - Male MH - Middle Aged MH - Mutation/genetics MH - Polycystic Kidney, Autosomal Dominant/*genetics MH - Polymorphism, Single-Stranded Conformational MH - Proteins/*genetics MH - TRPP Cation Channels EDAT- 1999/04/14 00:00 MHDA- 1999/04/14 00:01 CRDT- 1999/04/14 00:00 PHST- 1999/04/14 00:00 [pubmed] PHST- 1999/04/14 00:01 [medline] PHST- 1999/04/14 00:00 [entrez] AID - 10.1046/j.1523-1755.1999.00368.x [doi] AID - S0085-2538(15)46073-9 [pii] PST - ppublish SO - Kidney Int. 1999 Apr;55(4):1225-33. doi: 10.1046/j.1523-1755.1999.00368.x.