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  • Lona-Durazo, FridaUniv Toronto, Dept Anthropol, Hlth Sci Complex,Room 352, Mississauga, ON L5L 1C6, Canada (författare)

Meta-analysis of GWA studies provides new insights on the genetic architecture of skin pigmentation in recently admixed populations

  • Artikel/kapitelEngelska2019

Förlag, utgivningsår, omfång ...

  • 2019-07-17
  • BMC,2019
  • electronicrdacarrier

Nummerbeteckningar

  • LIBRIS-ID:oai:DiVA.org:uu-390776
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-390776URI
  • https://doi.org/10.1186/s12863-019-0765-5DOI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

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Klassifikation

  • Ämneskategori:ref swepub-contenttype
  • Ämneskategori:art swepub-publicationtype

Anmärkningar

  • Background: Association studies in recently admixed populations are extremely useful to identify the genetic architecture of pigmentation, due to their high genotypic and phenotypic variation. However, to date only four Genome-Wide Association Studies (GWAS) have been carried out in these populations.Results: We present a GWAS of skin pigmentation in an admixed sample from Cuba (N=762). Additionally, we conducted a meta-analysis including the Cuban sample, and admixed samples from Cape Verde, Puerto Rico and African-Americans from San Francisco. This meta-analysis is one of the largest efforts so far to characterize the genetic basis of skin pigmentation in admixed populations (N=2,104). We identified five genome-wide significant regions in the meta-analysis, and explored if the markers observed in these regions are associated with the expression of relevant pigmentary genes in human melanocyte cultures. In three of the regions identified in the meta-analysis (SLC24A5, SLC45A2, and GRM5/TYR), the association seems to be driven by non-synonymous variants (rs1426654, rs16891982, and rs1042602, respectively). The rs16891982 polymorphism is strongly associated with the expression of the SLC45A2 gene. In the GRM5/TYR region, in addition to the rs1042602 non-synonymous SNP located on the TYR gene, variants located in the nearby GRM5 gene have an independent effect on pigmentation, possibly through regulation of gene expression of the TYR gene. We also replicated an association recently described near the MFSD12 gene on chromosome 19 (lead variant rs112332856). Additionally, our analyses support the presence of multiple signals in the OCA2/HERC2/APBA2 region on chromosome 15. A clear causal candidate is the HERC2 intronic variant rs12913832, which has a profound influence on OCA2 expression. This variant has pleiotropic effects on eye, hair, and skin pigmentation. However, conditional and haplotype-based analyses indicate the presence of other variants with independent effects on melanin levels in OCA2 and APBA2. Finally, a follow-up of genome-wide signals identified in a recent GWAS for tanning response indicates that there is a substantial overlap in the genetic factors influencing skin pigmentation and tanning response.Conclusions: Our meta-analysis of skin pigmentation GWAS in recently admixed populations provides new insights about the genetic architecture of this complex trait.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Hernandez-Pacheco, NataliaUniv La Laguna, Res Unit, Hosp Univ NS de Candelaria, Santa Cruz De Tenerife, Spain;Univ La Laguna, Genom & Hlth Grp, Dept Biochem Microbiol Cell Biol & Genet, Tenerife, Spain (författare)
  • Fan, ShaohuaUniv Penn, Dept Genet, Perelman Sch Med, Philadelphia, PA 19104 USA (författare)
  • Zhang, TongwuNCI, Lab Translat Genom, Div Canc Epidemiol & Genet, NIH, Bethesda, MD 20892 USA (författare)
  • Choi, JiyeonNCI, Lab Translat Genom, Div Canc Epidemiol & Genet, NIH, Bethesda, MD 20892 USA (författare)
  • Kovacs, Michael A.NCI, Lab Translat Genom, Div Canc Epidemiol & Genet, NIH, Bethesda, MD 20892 USA (författare)
  • Loftus, Stacie K.NHGRI, Genet Dis Res Branch, NIH, Bethesda, MD 20892 USA (författare)
  • Le, Phuong (författare)
  • Edwards, MelissaUniv Toronto, Dept Anthropol, Hlth Sci Complex,Room 352, Mississauga, ON L5L 1C6, Canada (författare)
  • Fortes-Lima, Cesar A.Uppsala universitet,Människans evolution,Univ Paris Diderot, Evolutionary Anthropol Team, Lab Ecoanthropol & Ethnobiol UMR7206, CNRS,MNHN,Musee Homme, Paris, France(Swepub:uu)cesfo882 (författare)
  • Eng, CelesteUniv Calif San Francisco, Dept Bioengn & Therapeut Sci, San Francisco, CA 94143 USA (författare)
  • Huntsman, ScottUniv Calif San Francisco, Dept Bioengn & Therapeut Sci, San Francisco, CA 94143 USA (författare)
  • Hu, DongleiUniv Calif San Francisco, Dept Bioengn & Therapeut Sci, San Francisco, CA 94143 USA (författare)
  • Javier Gomez-Cabezas, EnriqueCtr Sociol & Psychol Res, Havana, Cuba (författare)
  • Caridad Marin-Padron, LiliaMed Univ Havana, Natl Ctr Med Genet, Havana, Cuba (författare)
  • Grauholm, JonasStatens Serum Inst, Dept Congenital Disorders, Copenhagen, Denmark (författare)
  • Mors, OleAarhus Univ, Translat Neuropsychiat Unit, Dept Clin Med, Aarhus, Denmark;Aarhus Univ, Lundbeck Fdn Initiat Integrat Psychiat Res, Aarhus, Denmark;Aarhus Univ Hosp, Psychiat Dept, Aarhus, Denmark (författare)
  • Burchard, Esteban G.Univ Calif San Francisco, Dept Bioengn & Therapeut Sci, San Francisco, CA 94143 USA (författare)
  • Norton, Heather L.Univ Cincinnati, Dept Anthropol, Cincinnati, OH USA (författare)
  • Pavan, William J.NHGRI, Genet Dis Res Branch, NIH, Bethesda, MD 20892 USA (författare)
  • Brown, Kevin M.NCI, Lab Translat Genom, Div Canc Epidemiol & Genet, NIH, Bethesda, MD 20892 USA (författare)
  • Tishkoff, SarahUniv Penn, Dept Genet, Perelman Sch Med, Philadelphia, PA 19104 USA;Univ Penn, Dept Biol, Sch Arts & Sci, Philadelphia, PA 19104 USA (författare)
  • Pino-Yanes, MariaUniv La Laguna, Genom & Hlth Grp, Dept Biochem Microbiol Cell Biol & Genet, Tenerife, Spain;Inst Salud Carlos III, CIBER Enfermedades Resp, Madrid, Spain;Univ La Laguna, ITB, Santa Cruz De Tenerife, Spain (författare)
  • Beleza, SandraUniv Leicester, Dept Genet & Genome Biol, Coll Life Sci, Leicester, Leics, England (författare)
  • Marcheco-Teruel, BeatrizMed Univ Havana, Natl Ctr Med Genet, Havana, Cuba (författare)
  • Parra, Esteban J.Univ Toronto, Dept Anthropol, Hlth Sci Complex,Room 352, Mississauga, ON L5L 1C6, Canada (författare)
  • Univ Toronto, Dept Anthropol, Hlth Sci Complex,Room 352, Mississauga, ON L5L 1C6, CanadaUniv La Laguna, Res Unit, Hosp Univ NS de Candelaria, Santa Cruz De Tenerife, Spain;Univ La Laguna, Genom & Hlth Grp, Dept Biochem Microbiol Cell Biol & Genet, Tenerife, Spain (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:BMC Genetics: BMC201471-2156

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