Preprint Review Version 1 Preserved in Portico This version is not peer-reviewed

Vitamin D-related Genetic Variations and Non-alcoholic Fatty Liver Disease: a Systematic Review

Version 1 : Received: 8 July 2022 / Approved: 11 July 2022 / Online: 11 July 2022 (04:57:43 CEST)

How to cite: Jaroenlapnopparat, A.; Suppakitjanusant, P.; Ponvilawan, B.; Charoenngam, N. Vitamin D-related Genetic Variations and Non-alcoholic Fatty Liver Disease: a Systematic Review. Preprints 2022, 2022070150 (doi: 10.20944/preprints202207.0150.v1). Jaroenlapnopparat, A.; Suppakitjanusant, P.; Ponvilawan, B.; Charoenngam, N. Vitamin D-related Genetic Variations and Non-alcoholic Fatty Liver Disease: a Systematic Review. Preprints 2022, 2022070150 (doi: 10.20944/preprints202207.0150.v1).

Abstract

Background: Studies have demonstrated the link between vitamin D-related genetic variations and non-skeletal outcomes. We aimed to identify all available data on the association of vitamin D-related genetic variations with non-alcoholic fatty liver disease (NAFLD). Methods: Potentially eligible studies were identified from Embase and Medline databases from inception to June 2022 using search strategy that comprised terms for “Vitamin D” and “NAFLD”. Eligible study must report the association between vitamin D-related genetic variations and presence, severity or response to treatment of NAFLD. Data were extracted from each eligible study. Results: A total of 3,495 articles were identified. After systematic review, twelve studies were in-cluded. A total of 26 genetic variations were identified. Presence of NAFLD was associated with variations of GC (rs222054, rs222020, rs10011000, rs7041), VDR (rs2228570, rs11168287, rs10783219, rs4752), CYP24A1 (rs3787557, rs6068816, rs2296241, rs2248359) and CYP27B1 (rs4646536). Severity of NAFLD was associated with variations of GC (rs4588), VDR (rs2228570, rs4334089), CYP2R1 (rs10741657), DHCR7 (rs1544410, rs3829251, rs12785878) and CYP24A1 (rs3787557, rs6068816, rs6097809, rs6127119, rs2248359, rs3787554, rs4809960, rs6022999). Response to calcitriol treatment was associated with variation of VDR (rs10735810). Conclusions: Multiple vitamin D-related genetic variations were associated with NAFLD, indi-cating the role of vitamin D in the pathogenesis of NAFLD.

Keywords

Non-alcoholic fatty liver disease; Non-alcoholic steatohepatitis; Vitamin D; VDR; CYP27B1; CYP2R1; CYP24A1; GC; DHCR7; Genetic variation; Polymorphism; Systematic review

Subject

MEDICINE & PHARMACOLOGY, Gastroenterology

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