Cited by 46Genetic Associations and EpidemiologyTryptophan and brain disordersTreatment of Major Depression

Identification of IL6 as a susceptibility gene for major depressive disorder

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Zhang, Chen, Wu, Zhiguo, Zhao, Guoqing, Wang, Fan, Fang, Yiru·2016·Scientific Reports

Abstract

Our previous work implied that interleukin 6 (IL6) may be a biological marker for major depressive disorder (MDD). In this study, we performed a comprehensive genetic study to determine the association between the gene encoding IL6 (IL6) and MDD in Han Chinese. There were 50 drug-naïve MDD patients and 50 healthy controls undergoing an mRNA expression study. A sample of 772 patients with MDD and 759 healthy controls were used for genetic analysis. Next, we performed an eQTL analysis to identify whether risk SNP(s) is associated with IL6 expression in brain. Our results showed that patients with MDD have higher levels of IL6 than healthy controls (P = 0.008). The SNP rs1800797 has a significant association with MDD (P = 0.01) in a dominant model. The eQTL analysis showed a marginally significant association between the rs1800797 and IL6 expression in the frontal cortex (P = 0.087). Our preliminary findings are suggestive of an association between rs1800797 and the risk of MDD. Further investigations are required to evaluate this association in larger samples to increase statistical power, and to examine the correlation between rs1800797 and IL6 methylation patterns.

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Authors
Zhang, C., Wu, Z., Zhao, G., Wang, F., & Fang, Y.
Affiliations
Shanghai Jiao Tong University (CN)
Corresponding author
  • Zhang, Chen
  • Fang, Yiru
Venue
Scientific Reports
Published
2016-08-09
Volume
6
Issue
1
Pages
31264-31264
ISSN
2045-2322 (ISSN-L)
OpenAlex
W2511596774
Cited by
46
References
56
Citations by year
2026: 2 · 2025: 5 · 2024: 2 · 2023: 2 · 2022: 3 · 2021: 5 · 2020: 7 · 2019: 6 · 2018: 7 · 2017: 6 · 2016: 1
FWCI
5.38
Type
journal article
Language
en
Open access
Locations
  • Scientific Reports (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • National Natural Science Foundation of China (81,471,358)
  • Shanghai Municipal Education Commission (20152530)
  • Science and Technology Commission of Shanghai Municipality (201540029, 20152530)
  • Health and Family Planning Commission of Sichuan Province (201540029)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
Keywords
interleukin-6, major depressive disorder, genetic susceptibility, rs1800797, expression quantitative trait loci, brain gene expression, frontal cortex, Han Chinese, mRNA expression, DNA methylation
MeSH terms
Adult, Brain, China, Major Depressive Disorder, Female, Frontal Lobe, Genotype, Humans, Male, Risk, RNA, Messenger, Smoking, Cohort Studies, Interleukin-6, Case-Control Studies, DNA Methylation, Genetic Predisposition to Disease, Polymorphism, Single Nucleotide, Gene Expression Profiling, Quantitative Trait Loci, Asian People

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