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Jhun EH, Sadhu N, He Y, Yao Y, Wilkie DJ, Molokie RE, Wang ZJ. S100B single nucleotide polymorphisms exhibit sex-specific associations with chronic pain in sickle cell disease in a largely African-American cohort. PLoS One 2020; 15:e0232721. [PMID: 32379790 PMCID: PMC7205279 DOI: 10.1371/journal.pone.0232721] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 04/20/2020] [Indexed: 01/27/2023] Open
Abstract
BACKGROUND Pain in sickle cell disease (SCD) is severe and multifaceted resulting in significant differences in its frequency and intensity among individuals. In this study, we examined the influence of S100B gene single nucleotide polymorphisms (SNP) on acute and chronic pain variability in SCD. METHODS Composite pain index (CPI) scores captured chronic pain. Painful crisis related emergency care utilization recorded acute pain incidence. Genotyping was performed using MassARRAY iPLEX platform. RESULTS Regression analysis revealed associations of increased CPI with rs9722 A allele in additive (p = 0.005) and dominant (p = 0.005) models. Rs1051169 G allele on the other hand was associated with decreased CPI in additive (p = 0.001), and dominant (p = 0.005) models. Sex-specific analysis found that these associations were significant in females but not males in this cohort. Linkage analysis identified two haploblocks. Block 1 (rs9983698-rs9722) haplotype T-A was associated with increased CPI (p = 0.002) while block 2 (rs1051169-rs11911834) haplotype G-G was associated with decreased CPI (p = 0.001). Both haplotypic associations were only significant in females. No association of S100B SNPs with utilization reached statistical significance. CONCLUSIONS S100B SNPs and haplotypes are associated with chronic pain in female, but not male, patients with SCD, implicating a potential role of S100B polymorphism in SCD pain heterogeneity in a sex-dependent manner.
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Affiliation(s)
- Ellie H. Jhun
- Department of Pharmaceutical Sciences, University of Illinois College of Pharmacy, Chicago, Illinois, United States of America
| | - Nilanjana Sadhu
- Department of Pharmaceutical Sciences, University of Illinois College of Pharmacy, Chicago, Illinois, United States of America
| | - Ying He
- Department of Pharmaceutical Sciences, University of Illinois College of Pharmacy, Chicago, Illinois, United States of America
- Comprehensive Sickle Cell Center, University of Illinois at Chicago, Chicago, Illinois, United States of America
| | - Yingwei Yao
- Department of Biobehavioral Nursing Science, University of Florida College of Nursing, Gainesville, Florida, United States of America
| | - Diana J. Wilkie
- Department of Biobehavioral Nursing Science, University of Florida College of Nursing, Gainesville, Florida, United States of America
| | - Robert E. Molokie
- Department of Pharmaceutical Sciences, University of Illinois College of Pharmacy, Chicago, Illinois, United States of America
- Comprehensive Sickle Cell Center, University of Illinois at Chicago, Chicago, Illinois, United States of America
- Jesse Brown Veteran’s Administration Medical Center, Chicago, Illinois, United States of America
- Division of Hematology/Oncology, University of Illinois at Chicago College of Medicine, Chicago, Illinois, United States of America
| | - Zaijie Jim Wang
- Department of Pharmaceutical Sciences, University of Illinois College of Pharmacy, Chicago, Illinois, United States of America
- Comprehensive Sickle Cell Center, University of Illinois at Chicago, Chicago, Illinois, United States of America
- Department of Neurology & Rehabilitation, University of Illinois at Chicago College of Medicine, Chicago, Illinois, United States of America
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