PMID- 33849530 OWN - NLM STAT- MEDLINE DCOM- 20211125 LR - 20230906 IS - 1755-8794 (Electronic) IS - 1755-8794 (Linking) VI - 14 IP - 1 DP - 2021 Apr 13 TI - Gene variants associated with acne vulgaris presentation and severity: a systematic review and meta-analysis. PG - 103 LID - 10.1186/s12920-021-00953-8 [doi] LID - 103 AB - BACKGROUND: Multiple factors have been attributed to acne vulgaris predisposition and individual variations in the severity of skin symptoms, and genetics stood out as one of the major factors. METHODS: We performed a systematic review on the genes and their variants that have been investigated for association with acne presentation and severity. A random-effect meta-analysis using the allele model (minor allele vs. major allele) was also conducted to provide an overall estimation of risk effects of frequently reported gene variants. This included a subset data of 982 acne cases and 846 controls extracted from our existing GWAS database on various allergic and skin diseases among Singapore Chinese. RESULTS: Systematic review of 51 articles covering Asians and Caucasians found 60 genes/loci and their 100 variants implicated in acne; majority of them were in the intron, coding region/missense, and promoter regions. The commonly studied candidate genes/gene families include tumor necrosis factor (TNF), and the interleukin (IL) and cytochrome P450 (CYP) gene families. Our meta-analysis showed that most of the analyzed gene variants exhibited insignificant pooled odds ratio (pOR) and significant heterogeneity between studies. Nevertheless, we found that TNF rs1800629 A allele carriers and CYP17A1 rs743572 T allele carriers had significantly reduced mild acne risk [pOR: 0.60; 95% Confidence Interval (CI): 0.33-0.86] and severe acne risk (pOR: 0.59; 95% CI: 0.40-0.79), respectively, across populations. Overall, FST (follistatin) rs629725 A allele poses a significantly modest increased risk for acne presentation (pOR: 1.19, 95% CI: 1.14, 1.23), but neither TIMP2 (TIMP metallopeptidase inhibitor 2) rs8179090 nor CYP1A1 rs4646903 (pOR: 0.96, 95% CI: 0.80-1.12; pOR: 0.95, 95% CI: 0.83, 1.08), respectively. We discovered 15 novel SNPs in the 3' UTR region of the Toll-like Receptor 4 gene (TLR4) associated with acne presentation. CONCLUSIONS: This systematic review and meta-analysis suggest that genes influencing inflammatory responses, specifically TNF, and genes influencing the function and activity of sebaceous glands, specifically CYP17A1 and FST, have potential risk variants for acne presentation and severity across populations. Understanding the genetic susceptibility factors and biological pathways involved in the pathogenesis of acne will help us to gain insights into developing effective acne treatments. FAU - Heng, Anna Hwee Sing AU - Heng AHS AD - Allergy and Molecular Immunology Laboratory, Lee Hiok Kwee Functional Genomics Laboratories, Department of Biological Sciences, Faculty of Science, National University of Singapore, Block S2, Level 5, 14 Science Drive 4, Lower Kent Ridge Road, Singapore, 117543, Singapore. FAU - Say, Yee-How AU - Say YH AD - Allergy and Molecular Immunology Laboratory, Lee Hiok Kwee Functional Genomics Laboratories, Department of Biological Sciences, Faculty of Science, National University of Singapore, Block S2, Level 5, 14 Science Drive 4, Lower Kent Ridge Road, Singapore, 117543, Singapore. FAU - Sio, Yang Yie AU - Sio YY AD - Allergy and Molecular Immunology Laboratory, Lee Hiok Kwee Functional Genomics Laboratories, Department of Biological Sciences, Faculty of Science, National University of Singapore, Block S2, Level 5, 14 Science Drive 4, Lower Kent Ridge Road, Singapore, 117543, Singapore. FAU - Ng, Yu Ting AU - Ng YT AD - Allergy and Molecular Immunology Laboratory, Lee Hiok Kwee Functional Genomics Laboratories, Department of Biological Sciences, Faculty of Science, National University of Singapore, Block S2, Level 5, 14 Science Drive 4, Lower Kent Ridge Road, Singapore, 117543, Singapore. FAU - Chew, Fook Tim AU - Chew FT AD - Allergy and Molecular Immunology Laboratory, Lee Hiok Kwee Functional Genomics Laboratories, Department of Biological Sciences, Faculty of Science, National University of Singapore, Block S2, Level 5, 14 Science Drive 4, Lower Kent Ridge Road, Singapore, 117543, Singapore. dbscft@nus.edu.sg. LA - eng PT - Journal Article PT - Meta-Analysis PT - Research Support, Non-U.S. Gov't PT - Systematic Review DEP - 20210413 PL - England TA - BMC Med Genomics JT - BMC medical genomics JID - 101319628 SB - IM MH - *Acne Vulgaris MH - Alleles MH - *Genetic Predisposition to Disease MH - Humans MH - Polymorphism, Single Nucleotide PMC - PMC8045239 OTO - NOTNLM OT - Acne vulgaris OT - Gene OT - Genome-wide association study OT - Risk factors OT - Single nucleotide polymorphism COIS- The authors declare that they have no competing interests. EDAT- 2021/04/15 06:00 MHDA- 2021/11/26 06:00 PMCR- 2021/04/13 CRDT- 2021/04/14 05:37 PHST- 2020/11/02 00:00 [received] PHST- 2021/03/29 00:00 [accepted] PHST- 2021/04/14 05:37 [entrez] PHST- 2021/04/15 06:00 [pubmed] PHST- 2021/11/26 06:00 [medline] PHST- 2021/04/13 00:00 [pmc-release] AID - 10.1186/s12920-021-00953-8 [pii] AID - 953 [pii] AID - 10.1186/s12920-021-00953-8 [doi] PST - epublish SO - BMC Med Genomics. 2021 Apr 13;14(1):103. doi: 10.1186/s12920-021-00953-8.