Related Experiment Video
Updated: Jun 18, 2026

A Neonatal Imaging Model of Gram-Negative Bacterial Sepsis
Published on: August 12, 2020
Cytokine gene polymorphisms and sudden infant death syndrome
L Ferrante1, S H Opdal, A Vege
1Institute of Forensic Medicine, University of Oslo, Oslo, Norway. linda.ferrante@medisin.uio.no
Specific cytokine gene variations, particularly in IL-8 and IL-13, may increase the risk of sudden infant death syndrome (SIDS) in infants who sleep prone. Further research is needed to understand these genetic links.
Area of Science:
- Immunogenetics
- Pediatric Pathology
- Molecular Biology
Background:
- Sudden infant death syndrome (SIDS) is often associated with immune system stimulation.
- The role of genetic factors, specifically cytokine gene polymorphisms, in SIDS is hypothesized.
- Understanding these genetic predispositions may elucidate SIDS mechanisms.
Purpose of the Study:
- To investigate the association between functional polymorphisms in cytokine genes and SIDS.
- To determine if specific cytokine gene variants contribute to SIDS risk.
- To explore genetic links between sleeping position, fever, and SIDS.
Main Methods:
- Genotyping of single nucleotide polymorphisms (SNPs) in IL-6, IL-8, IL-12, IL-13, IL-16, IL-18, and IFNgamma genes.
- Analysis of 148 SIDS cases, 56 borderline SIDS cases, 41 infectious death cases, and 131 controls.
- Comparison of genotype distributions across different case and control groups.
Main Results:
- No overall differences in genotype distribution were found between groups.
- Specific IL-8 genotypes (IL-8 -251AA/AT and IL-8 -781CT/TT) were more frequent in SIDS cases found in a prone sleeping position.
- An association between fever and the IL-13 +4464GG genotype was observed in infectious death cases.
Conclusions:
- Certain interleukin genotypes are implicated as part of the genetic predisposition for SIDS in infants sleeping prone.
- These findings suggest a genetic component influencing SIDS risk related to sleeping position.
- Further investigation into cytokine gene polymorphisms and SIDS is warranted.
Related Concept Videos
Single Nucleotide Polymorphisms-SNPs
Comparing Copy Number Variations and SNPs
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
Pharmacogenetic Phenotypes: Alterations in Pharmacokinetics, Drug Targets and Biologic Milieu
Immunodeficiency Diseases
There are three main causes of immunodeficiency disorders...
Pharmacogenetics of Drug Targets: β₂-Adrenergic Receptors, Apo E, Thymidylate Synthase
Cytomegalovirus Disease
