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Schrauwen I, Melegh BI, Chakchouk I, Acharya A, Nasir A, Poston A, Cornejo-Sanchez DM, Szabo Z, Karosi T, Bene J, Melegh B, Leal SM. Hearing impairment locus heterogeneity and identification of PLS1 as a new autosomal dominant gene in Hungarian Roma. Eur J Hum Genet 2019; 27:869-878. [PMID: 30872814 PMCID: PMC6777543 DOI: 10.1038/s41431-019-0372-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 01/24/2019] [Accepted: 02/08/2019] [Indexed: 01/07/2023] Open
Abstract
Roma are a socially and culturally distinct isolated population with genetically divergent subisolates, residing mainly across Central, Southern, and Eastern Europe. We evaluated the genetic etiology of hearing impairment (HI) in 15 Hungarian Roma families through exome sequencing. A family with autosomal dominant non-syndromic HI segregating a rare variant in the Calponin-homology 2 domain of PLS1, or Plastin 1 [p.(Leu363Phe)] was identified. Young adult Pls1 knockout mice have progressive HI and show morphological defects to their inner hair cells. There is evidence that PLS1 is important in the preservation of adult stereocilia and normal hearing. Four families segregated the European ancestral variant c.35delG [p.(Gly12fs)] in GJB2, and one family was homozygous for p.(Trp24*), an Indian subcontinent ancestral variant which is common amongst Roma from Slovakia, Czech Republic, and Spain. We also observed variants in known HI genes USH1G, USH2A, MYH9, MYO7A, and a splice site variant in MANBA (c.2158-2A>G) in a family with HI, intellectual disability, behavioral problems, and respiratory inflammation, which was previously reported in a Czech Roma family with similar features. Lastly, using multidimensional scaling and ADMIXTURE analyses, we delineate the degree of Asian/European admixture in the HI families understudy, and show that Roma individuals carrying the GJB2 p.(Trp24*) and MANBA c.2158-2A>G variants have a more pronounced South Asian background, whereas the other hearing-impaired Roma display an ancestral background similar to Europeans. We demonstrate a diverse genetic HI etiology in the Hungarian Roma and identify a new gene PLS1, for autosomal dominant human non-syndromic HI.
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Affiliation(s)
- Isabelle Schrauwen
- Department of Molecular and Human Genetics, Center for Statistical Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Béla I Melegh
- Department of Medical Genetics, University of Pecs, Medical School, and Szentagothai Research Centre, Pecs, Hungary
| | - Imen Chakchouk
- Department of Molecular and Human Genetics, Center for Statistical Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Anushree Acharya
- Department of Molecular and Human Genetics, Center for Statistical Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Abdul Nasir
- Synthetic Protein Engineering Lab (SPEL), Department of Molecular Science and Technology, Ajou University, Suwon, 443-749, South Korea
| | - Alexis Poston
- Department of Molecular and Human Genetics, Center for Statistical Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Diana M Cornejo-Sanchez
- Department of Molecular and Human Genetics, Center for Statistical Genetics, Baylor College of Medicine, Houston, TX, USA
- Grupo Mapeo Genético, Facultad de Medicina, Universidad de Antioquia. Medellín, 050010470, Antioquia, Colombia
| | - Zsolt Szabo
- Department of Otolaryngology and Head and Neck Surgery, B-A-Z County Central Hospital and University Teaching Hospital, Miskolc, Hungary
| | - Tamás Karosi
- Department of Otolaryngology and Head and Neck Surgery, B-A-Z County Central Hospital and University Teaching Hospital, Miskolc, Hungary
| | - Judit Bene
- Department of Medical Genetics, University of Pecs, Medical School, and Szentagothai Research Centre, Pecs, Hungary
| | - Béla Melegh
- Department of Medical Genetics, University of Pecs, Medical School, and Szentagothai Research Centre, Pecs, Hungary
| | - Suzanne M Leal
- Department of Molecular and Human Genetics, Center for Statistical Genetics, Baylor College of Medicine, Houston, TX, USA.
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Matyas P, Postyeni E, Komlosi K, Szalai R, Bene J, Magyari L, Melegh B, Hadzsiev K. Age-Related Hearing Impairment Associated NAT2, GRM7, GRHL2 Susceptibility Gene Polymorphisms and Haplotypes in Roma and Hungarian Populations. Pathol Oncol Res 2018; 25:1349-1355. [PMID: 29455378 DOI: 10.1007/s12253-018-0388-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Accepted: 02/05/2018] [Indexed: 10/18/2022]
Abstract
Age-related hearing impairment (ARHI) is the most frequent sensory disease in the elderly, which is caused by an interaction between genetic and environmental factors. Here we examined the ethnic differences, allele and genotype frequencies of the NAT2, GRM7, and GRHL2 genes pooled samples of healthy Hungarian and healthy and hearing impaired Roma people. Study populations of healthy Hungarian and Roma subjects were characterized for the rs1799930 NAT2, rs11928865 GRM7, rs10955255, rs13263539, and rs1981361 GRHL2 polymorphisms and deaf Roma subjects were characterized for the rs1799930 NAT2, rs13263539, and rs1981361 GRHL2 using a PCR-RFLP method. We found significant differences in minor allele frequencies for GRHL2 rs13263539 and rs1981361 polymorphism between healthy Roma and Hungarian samples (37.9% vs. 51.0% and 43.6% vs. 56.2%, respectively; p < 0.05). The differences of homozygous genotype of GRHL2 rs13263539 and rs1981361 variants, values were also significantly different (13.0% vs. 25.3% and 16.5 vs. 32.3%; p < 0.05). The NAT2 rs1799930 homozygous genotype was 14.0% in healthy Romas and 7.7% in Hungarians, while the minor A allele frequency was 38.0% and 26.7% in Roma and Hungarian population, respectively (p < 0.05). Furthermore, the frequency of GGT, GAC and GAT haplotypes was significantly higher in the Hungarian population than in healthy Roma (1.87 vs. 4.47%, 0.91 vs. 2.07% and 1.15 vs. 5.51%, respectively; p < 0.008). Present study revealed significant interethnic differences in allele polymorphisms of NAT2, GRM7 and GRHL2 exhibit quite marked ethnic differences in Roma populations that might have important implications for the preventive and therapeutic treatments in this population.
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Affiliation(s)
- Petra Matyas
- Department of Medical Genetics, University of Pecs, Medical School, Szigeti 12, Pecs, H-7624, Hungary.,Human Genetic and Pharmacogenomic Research Group, Janos Szentagothai Research Centre, Ifjusag 20, Pecs, H-7624, Hungary
| | - Etelka Postyeni
- Department of Medical Genetics, University of Pecs, Medical School, Szigeti 12, Pecs, H-7624, Hungary.,Human Genetic and Pharmacogenomic Research Group, Janos Szentagothai Research Centre, Ifjusag 20, Pecs, H-7624, Hungary
| | - Katalin Komlosi
- Department of Medical Genetics, University of Pecs, Medical School, Szigeti 12, Pecs, H-7624, Hungary.,Human Genetic and Pharmacogenomic Research Group, Janos Szentagothai Research Centre, Ifjusag 20, Pecs, H-7624, Hungary
| | - Renata Szalai
- Department of Medical Genetics, University of Pecs, Medical School, Szigeti 12, Pecs, H-7624, Hungary.,Human Genetic and Pharmacogenomic Research Group, Janos Szentagothai Research Centre, Ifjusag 20, Pecs, H-7624, Hungary
| | - Judit Bene
- Department of Medical Genetics, University of Pecs, Medical School, Szigeti 12, Pecs, H-7624, Hungary.,Human Genetic and Pharmacogenomic Research Group, Janos Szentagothai Research Centre, Ifjusag 20, Pecs, H-7624, Hungary
| | - Lili Magyari
- Department of Medical Genetics, University of Pecs, Medical School, Szigeti 12, Pecs, H-7624, Hungary.,Human Genetic and Pharmacogenomic Research Group, Janos Szentagothai Research Centre, Ifjusag 20, Pecs, H-7624, Hungary
| | - Bela Melegh
- Department of Medical Genetics, University of Pecs, Medical School, Szigeti 12, Pecs, H-7624, Hungary. .,Human Genetic and Pharmacogenomic Research Group, Janos Szentagothai Research Centre, Ifjusag 20, Pecs, H-7624, Hungary.
| | - Kinga Hadzsiev
- Department of Medical Genetics, University of Pecs, Medical School, Szigeti 12, Pecs, H-7624, Hungary.,Human Genetic and Pharmacogenomic Research Group, Janos Szentagothai Research Centre, Ifjusag 20, Pecs, H-7624, Hungary
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