Schmidt, A.W.* ; Kühnapfel, A.* ; Kirsten, H.* ; Grallert, H. ; Hellerbrand, C.* ; Kiefer, F.* ; Mann, K.* ; Mueller, S.* ; Nöthen, M.M.* ; Peters, A. ; Ridinger, M.* ; Frank, J.* ; Rietschel, M.* ; Soranzo, N.* ; Soyka, M.* ; Wodarz, N.* ; Malerba, G.* ; Gambaro, G.* ; Gieger, C. ; Scholz, M.* ; Krug, S.* ; Michl, P.* ; Ewers, M.* ; Witt, H.* ; Laumen, H.* ; Rosendahl, J.*
Colocalization analysis of pancreas eQTLs with risk loci from alcoholic and novel non-alcoholic chronic pancreatitis GWAS suggests potential disease causing mechanisms.
Pancreatol. 22, 449-456 (2022)
Background: Previous genome-wide association studies (GWAS) identified genome-wide significant risk loci in chronic pancreatitis and investigated underlying disease causing mechanisms by simple overlaps with expression quantitative trait loci (eQTLs), a procedure which may often result in false positive conclusions. Methods: We conducted a GWAS in 584 non-alcoholic chronic pancreatitis (NACP) patients and 6040 healthy controls. Next, we applied Bayesian colocalization analysis of identified genome-wide significant risk loci from both, our recently published alcoholic chronic pancreatitis (ACP) and the novel NACP dataset, with pancreas eQTLs from the GTEx V8 European cohort to prioritize candidate causal genes and extracted credible sets of shared causal variants. Results: Variants at the CTRC (p = 1.22 × 10−21) and SPINK1 (p = 6.59 × 10−47) risk loci reached genome-wide significance in NACP. CTRC risk variants colocalized with CTRC eQTLs in ACP (PP4 = 0.99, PP4/PP3 = 95.51) and NACP (PP4 = 0.99, PP4/PP3 = 95.46). For both diseases, the 95% credible set of shared causal variants consisted of rs497078 and rs545634. CLDN2-MORC4 risk variants colocalized with CLDN2 eQTLs in ACP (PP4 = 0.98, PP4/PP3 = 42.20) and NACP (PP4 = 0.67, PP4/PP3 = 7.18), probably driven by the shared causal variant rs12688220. Conclusions: A shared causal CTRC risk variant might unfold its pathogenic effect in ACP and NACP by reducing CTRC expression, while the CLDN2-MORC4 shared causal variant rs12688220 may modify ACP and NACP risk by increasing CLDN2 expression.
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Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Typ der Hochschulschrift
Herausgeber
Schlagwörter
Bayesian Colocalization Analysis ; Chronic Pancreatitis ; Eqtl ; Gtex ; Gwas
Keywords plus
Sprache
englisch
Veröffentlichungsjahr
2022
Prepublished im Jahr
0
HGF-Berichtsjahr
2022
ISSN (print) / ISBN
1424-3903
e-ISSN
1424-3911
ISBN
Bandtitel
Konferenztitel
Konferzenzdatum
Konferenzort
Konferenzband
Quellenangaben
Band: 22,
Heft: 4,
Seiten: 449-456
Artikelnummer: ,
Supplement: ,
Reihe
Verlag
Elsevier
Verlagsort
Tag d. mündl. Prüfung
0000-00-00
Betreuer
Gutachter
Prüfer
Topic
Hochschule
Hochschulort
Fakultät
Veröffentlichungsdatum
0000-00-00
Anmeldedatum
0000-00-00
Anmelder/Inhaber
weitere Inhaber
Anmeldeland
Priorität
Begutachtungsstatus
Peer reviewed
Institut(e)
Institute of Epidemiology (EPI)
POF Topic(s)
30202 - Environmental Health
Forschungsfeld(er)
Genetics and Epidemiology
PSP-Element(e)
G-504091-002
G-504000-010
G-504091-004
Förderungen
Else Kroner-Fresenius-Stiftung
Deutsche Forschungsgemeinschaft
Copyright
Erfassungsdatum
2022-07-21