Association between brain-derived neurotrophic factor gene polymorphisms and fibromyalgia in a Korean population: a...

Area of Science:

• Neuroscience
• Genetics
• Rheumatology

Background:

• Brain-derived neurotrophic factor (BDNF) is implicated in fibromyalgia (FM) pathophysiology.
• Altered BDNF levels are observed in FM patients' blood and cerebrospinal fluid.

Purpose of the Study:

• To investigate the association between BDNF gene polymorphisms and FM susceptibility.
• To explore the relationship between BDNF gene polymorphisms and FM symptom severity.

Main Methods:

• Genotyping of 10 positions in the BDNF gene.
• Analysis of allele and genotype frequencies in 409 FM patients and 423 healthy controls.
• Haplotype analysis of BDNF gene variations.

Main Results:

• Significant differences in BDNF rs11030104 allele and genotype frequencies between FM patients and controls.
• The GG genotype and G allele of rs11030104 showed a protective effect against FM.
• The TT genotype of BDNF rs12273539 was associated with increased FM susceptibility.
• Certain BDNF haplotypes demonstrated a protective effect against FM.
• Specific BDNF genotypes and haplotypes correlated with FM symptom presentation.

Conclusions:

• This study is the first to link BDNF gene polymorphisms to FM.
• Specific BDNF single-nucleotide polymorphisms and haplotypes are associated with FM susceptibility.
• BDNF gene variations contribute to the development and symptoms of FM.