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Article: Detection and characterization of mosaicism in autosomal dominant polycystic kidney disease

TitleDetection and characterization of mosaicism in autosomal dominant polycystic kidney disease
Authors
KeywordsADPKD
diagnostics
genotype/phenotype correlations
mosaicism
mutations
PKD1
prognostics
Issue Date2020
Citation
Kidney International, 2020, v. 97, n. 2, p. 370-382 How to Cite?
AbstractAutosomal dominant polycystic kidney disease (ADPKD) is an inherited, progressive nephropathy accounting for 4-10% of end stage renal disease worldwide. PKD1 and PKD2 are the most common disease loci, but even accounting for other genetic causes, about 7% of families remain unresolved. Typically, these unsolved cases have relatively mild kidney disease and often have a negative family history. Mosaicism, due to de novo mutation in the early embryo, has rarely been identified by conventional genetic analysis of ADPKD families. Here we screened for mosaicism by employing two next generation sequencing screens, specific analysis of PKD1 and PKD2 employing long-range polymerase chain reaction, or targeted capture of cystogenes. We characterized mosaicism in 20 ADPKD families; the pathogenic variant was transmitted to the next generation in five families and sporadic in 15. The mosaic pathogenic variant was newly discovered by next generation sequencing in 13 families, and these methods precisely quantified the level of mosaicism in all. All of the mosaic cases had PKD1 mutations, 14 were deletions or insertions, and 16 occurred in females. Analysis of kidney size and function showed the mosaic cases had milder disease than a control PKD1 population, but only a few had clearly asymmetric disease. Thus, in a typical ADPKD population, readily detectable mosaicism by next generation sequencing accounts for about 1% of cases, and about 10% of genetically unresolved cases with an uncertain family history. Hence, identification of mosaicism is important to fully characterize ADPKD populations and provides informed prognostic information.
Persistent Identifierhttp://hdl.handle.net/10722/316181
ISSN
2023 Impact Factor: 14.8
2023 SCImago Journal Rankings: 3.886
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorHopp, Katharina-
dc.contributor.authorCornec-Le Gall, Emilie-
dc.contributor.authorSenum, Sarah R.-
dc.contributor.authorte Paske, Iris B.A.W.-
dc.contributor.authorRaj, Sonam-
dc.contributor.authorLavu, Sravanthi-
dc.contributor.authorBaheti, Saurabh-
dc.contributor.authorEdwards, Marie E.-
dc.contributor.authorMadsen, Charles D.-
dc.contributor.authorHeyer, Christina M.-
dc.contributor.authorOng, Albert C.M.-
dc.contributor.authorBae, Kyongtae T.-
dc.contributor.authorFatica, Richard-
dc.contributor.authorSteinman, Theodore I.-
dc.contributor.authorChapman, Arlene B.-
dc.contributor.authorGitomer, Berenice-
dc.contributor.authorPerrone, Ronald D.-
dc.contributor.authorRahbari-Oskoui, Frederic F.-
dc.contributor.authorTorres, Vicente E.-
dc.contributor.authorHarris, Peter C.-
dc.date.accessioned2022-08-24T15:49:31Z-
dc.date.available2022-08-24T15:49:31Z-
dc.date.issued2020-
dc.identifier.citationKidney International, 2020, v. 97, n. 2, p. 370-382-
dc.identifier.issn0085-2538-
dc.identifier.urihttp://hdl.handle.net/10722/316181-
dc.description.abstractAutosomal dominant polycystic kidney disease (ADPKD) is an inherited, progressive nephropathy accounting for 4-10% of end stage renal disease worldwide. PKD1 and PKD2 are the most common disease loci, but even accounting for other genetic causes, about 7% of families remain unresolved. Typically, these unsolved cases have relatively mild kidney disease and often have a negative family history. Mosaicism, due to de novo mutation in the early embryo, has rarely been identified by conventional genetic analysis of ADPKD families. Here we screened for mosaicism by employing two next generation sequencing screens, specific analysis of PKD1 and PKD2 employing long-range polymerase chain reaction, or targeted capture of cystogenes. We characterized mosaicism in 20 ADPKD families; the pathogenic variant was transmitted to the next generation in five families and sporadic in 15. The mosaic pathogenic variant was newly discovered by next generation sequencing in 13 families, and these methods precisely quantified the level of mosaicism in all. All of the mosaic cases had PKD1 mutations, 14 were deletions or insertions, and 16 occurred in females. Analysis of kidney size and function showed the mosaic cases had milder disease than a control PKD1 population, but only a few had clearly asymmetric disease. Thus, in a typical ADPKD population, readily detectable mosaicism by next generation sequencing accounts for about 1% of cases, and about 10% of genetically unresolved cases with an uncertain family history. Hence, identification of mosaicism is important to fully characterize ADPKD populations and provides informed prognostic information.-
dc.languageeng-
dc.relation.ispartofKidney International-
dc.subjectADPKD-
dc.subjectdiagnostics-
dc.subjectgenotype/phenotype correlations-
dc.subjectmosaicism-
dc.subjectmutations-
dc.subjectPKD1-
dc.subjectprognostics-
dc.titleDetection and characterization of mosaicism in autosomal dominant polycystic kidney disease-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.kint.2019.08.038-
dc.identifier.pmid31874800-
dc.identifier.scopuseid_2-s2.0-85076864885-
dc.identifier.volume97-
dc.identifier.issue2-
dc.identifier.spage370-
dc.identifier.epage382-
dc.identifier.eissn1523-1755-
dc.identifier.isiWOS:000508449300021-

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