ArticleBiochemical genetics2025
Impact of rs2046045 SNP in PDE8B on TSH Levels: Insights into Genetic Susceptibility to Hypothyroidism.
Article in Biochemical genetics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Hypothyroidism is the most prevalent thyroid disorder and leads to adverse effects on the human body. Serum thyroid stimulating hormone (TSH) values have been related to polymorphisms in multiple genes that may be involved in the regulation of thyroid function. The single nucleotide polymorphism (SNP) rs2046045 is situated in the intron region of the phosphodiesterase 8B (PDE8B) gene, which encodes a high-affinity cyclic adenosine monophosphate (cAMP)-specific phosphodiesterase widely expressed in thyroid tissue. The principal goal of the present study was to investigate the association between the SNP rs2046045 of the PDE8B gene and hypothyroidism. The study was designed as a case-control study, and a total of 160 hypothyroid and 160 healthy controls were involved. Blood samples were drawn from each individual, and deoxyribonuleic acid (DNA) was separated with a suitable DNA isolation kit. For genotyping, the polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) technique was employed. The IBM Statistical Package for Social Sciences (SPSS) 25.0 was utilized to analyze the statistical data. Age differences between the patients and controls were not observed in the present study. The genotype frequency of homozygous wild type (TT), homozygous mutate type (GG), and heterozygous (GT) was 45%, 2.5%, and 52.5%, respectively, in control subjects and 27.5%, 11.25%, and 61.25%, respectively, in cases, and showed a significant difference (p = 0.0002). The minor G allele frequency is elevated in hypothyroid patients as compared to healthy control subjects (41.87% vs. 28.75%), p = 0.0005. The presence of the mutant allele G of rs2046045 in the PDE8B gene correlates with elevated serum TSH levels in hypothyroid patients.
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