Genetic polymorphisms in IL1B predict susceptibility to steroid-induced osteonecrosis of the femoral head in Chinese Han population

Osteoporos Int. 2019 Apr;30(4):871-877. doi: 10.1007/s00198-019-04835-9. Epub 2019 Mar 9.

Abstract

The purpose of this research was to examine if the IL1B gene polymorphism has impact on the risk of steroid-induced ONFH in Chinese population. We found that IL1B rs1143630 decreased the SANFH's risk and IL1B rs2853550 increased the risk of steroid-induced ONFH. So, we guess that IL1B gene influences the genetic susceptibility of steroid-induced ONFH.

Introduction: Genetic polymorphisms in IL1B gene could be related in the pathogenesis of osteonecrosis. Discusses on the relationship between the IL1B gene and steroid-induced osteonecrosis of the femoral head (steroid-induced ONFH) is still less in Chinese Han population. So, in this research, we want to examine whether the IL1B gene polymorphism has impact on the risk of steroid-induced ONFH in Chinese population.

Methods: A total of 286 steroid-induced ONFH patients and 441 controls were recruited, and seven SNPs (rs2853550, rs1143643, rs3136558, rs1143630, rs1143627, rs16944, and rs1143623) in IL1B gene were selected; unconditional logistic regression analysis was used to research the influence on the risk of steroid-induced ONFH. Functional annotations of IL1B variants were performed by RegulomeDB and HaploReg.

Results: rs1143630 (A>C) in the IL1B gene decreased the risk of steroid-induced ONFH in the allele model (OR = 0.69, 95%CI 0.51-0.93, p = 0.014). Further genetic model analyses found that IL1B rs2853550 AG genotype increased the risk of steroid-induced ONFH compared with the people who are carriers of the IL1B rs2853550 GG genotype (OR = 1.69, 95%CI 1.16-2.46, p = 0.012). In the dominant model, IL1B rs1143630 GG-GT genotype decreased the risk of steroid-induced ONFH (OR = 0.62, 95%CI 0.44-0.87, p = 0.0051). And further haplotype analysis was performed, while the result was not significant. Using RegulomeDB and HaploReg, rs2853550 is likely to affect TF binding, any motif and DNase peak.

Conclusions: We guess that IL1B gene influences the genetic susceptibility of steroid-induced ONFH.

Keywords: Case-control research; Gene polymorphism; IL1B gene; Steroid-induced ONFH.

Publication types

  • Multicenter Study

MeSH terms

  • Adult
  • Asian People / genetics
  • Case-Control Studies
  • China / epidemiology
  • Female
  • Femur Head Necrosis / chemically induced*
  • Femur Head Necrosis / epidemiology
  • Femur Head Necrosis / genetics*
  • Gene Frequency
  • Genetic Predisposition to Disease
  • Glucocorticoids / adverse effects*
  • Haplotypes
  • Humans
  • Interleukin-1beta / genetics*
  • Male
  • Middle Aged
  • Polymorphism, Single Nucleotide*

Substances

  • Glucocorticoids
  • IL1B protein, human
  • Interleukin-1beta