Genetic determinants of risk and survival in pulmonary arterial hypertension
Abstract Background Pulmonary arterial hypertension (PAH) is a rare disorder leading to premature death. Rare genetic variants contribute to disease etiology but the contribution of common genetic variation to disease risk and outcome remains poorly characterized.Methods We performed two separate genome-wide association studies of PAH using data across 11,744 European-ancestry individuals (including 2,085 patients), one with genotypes from 5,895 whole genome sequences and another with genotyping array data from 5,849 further samples. Cross-validation of loci reaching genome-wide significance was sought by meta-analysis. We functionally annotated associated variants and tested associations with duration of survival.Findings A locus atHLA-DPA1/DPB1within the class II major histocompatibility (MHC) region and a second nearSOX17were significantly associated with PAH. TheSOX17locus contained two independent signals associated with PAH. Functional and epigenomic data indicate that the risk variants nearSOX17alter gene regulation via an enhancer active in endothelial cells. PAH risk variants determined haplotype-specific enhancer activity and CRISPR-inhibition of the enhancer reducedSOX17expression. Analysis of median survival showed that PAH patients with two copies of theHLA-DPA1/DPB1risk variant had a two-fold difference (>16 years versus 8 years), compared to patients homozygous for the alternative allele.Interpretation We have found that common genetic variation at loci inHLA-DPA1/DPB1and an enhancer nearSOX17are associated with PAH. Impairment of Sox17 function may be more common in PAH than suggested by rare mutations inSOX17. Allelic variation atHLA-DPB1stratifies PAH patients for survival following diagnosis, with implications for future therapeutic trial design.Funding UK NIHR, BHF, UK MRC, Dinosaur Trust, NIH/NHLBI, ERS, EMBO, Wellcome Trust, EU, AHA, ACClinPharm, Netherlands CVRI, Dutch Heart Foundation, Dutch Federation of UMC, Netherlands OHRD and RNAS, German DFG, German BMBF, APH Paris, Inserm, Université Paris-Sud, and French ANR..
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Preprint| Erscheinungsjahr: |
2022 |
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| Erschienen: |
2022 |
| Enthalten in: |
bioRxiv.org - (2022) vom: 23. Aug. Zur Gesamtaufnahme - year:2022 |
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| Sprache: |
Englisch |
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| doi: |
10.1101/317164 |
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| PPN (Katalog-ID): |
XBI036970778 |
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| 041 | |a eng | ||
| 100 | 1 | |a Rhodes, Christopher J. |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Genetic determinants of risk and survival in pulmonary arterial hypertension |
| 264 | 1 | |c 2022 | |
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| 520 | |a Abstract Background Pulmonary arterial hypertension (PAH) is a rare disorder leading to premature death. Rare genetic variants contribute to disease etiology but the contribution of common genetic variation to disease risk and outcome remains poorly characterized.Methods We performed two separate genome-wide association studies of PAH using data across 11,744 European-ancestry individuals (including 2,085 patients), one with genotypes from 5,895 whole genome sequences and another with genotyping array data from 5,849 further samples. Cross-validation of loci reaching genome-wide significance was sought by meta-analysis. We functionally annotated associated variants and tested associations with duration of survival.Findings A locus atHLA-DPA1/DPB1within the class II major histocompatibility (MHC) region and a second nearSOX17were significantly associated with PAH. TheSOX17locus contained two independent signals associated with PAH. Functional and epigenomic data indicate that the risk variants nearSOX17alter gene regulation via an enhancer active in endothelial cells. PAH risk variants determined haplotype-specific enhancer activity and CRISPR-inhibition of the enhancer reducedSOX17expression. Analysis of median survival showed that PAH patients with two copies of theHLA-DPA1/DPB1risk variant had a two-fold difference (>16 years versus 8 years), compared to patients homozygous for the alternative allele.Interpretation We have found that common genetic variation at loci inHLA-DPA1/DPB1and an enhancer nearSOX17are associated with PAH. Impairment of Sox17 function may be more common in PAH than suggested by rare mutations inSOX17. Allelic variation atHLA-DPB1stratifies PAH patients for survival following diagnosis, with implications for future therapeutic trial design.Funding UK NIHR, BHF, UK MRC, Dinosaur Trust, NIH/NHLBI, ERS, EMBO, Wellcome Trust, EU, AHA, ACClinPharm, Netherlands CVRI, Dutch Heart Foundation, Dutch Federation of UMC, Netherlands OHRD and RNAS, German DFG, German BMBF, APH Paris, Inserm, Université Paris-Sud, and French ANR. | ||
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