The Search for the Genes of Vasovagal Syncope
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Only humans faint, and not all do so. Syncope tends to recur, and the predisposition to syncope can persist over many decades. Observations such as these have suggested that there may be a genetic predisposition to vasovagal syncope. It seems to have a high prevalence in some families; having a parent who faints increases the likelihood of an offspring fainting, and this is increased even further if both biological parents faint. Numerous studies have correlated a number of genotypes with positive tilt tests. However, the control subjects are usually those who faint, but have negative tilt tests, making the conclusions about association with the clinical phenotype less certain. Twin studies, highly focused genome-wide association studies, and gene duplicate studies all suggest there are sites in the genome that associate with vasovagal syncope, although the specific genes, pathways, and proteins are unknown. A recent large, candidate gene study of kindreds with high, multigenerational prevalence of the vasovagal syncope identified 3 genes that associate with vasovagal syncope. Our understanding of the genetic correlates of vasovagal syncope is in its infancy, with much to be understood.
Mohammed R, Sultan I, Shamakh A, Balamesh A, Kishta A, Alkhotani L Cureus. 2024; 16(6):e62201.
PMID: 39006710 PMC: 11239957. DOI: 10.7759/cureus.62201.
Global prevalence of vasovagal syncope: A systematic review and meta-analysis.
Salari N, Karimi Z, Hemmati M, Mohammadi A, Shohaimi S, Mohammadi M Glob Epidemiol. 2024; 7:100136.
PMID: 38283939 PMC: 10821537. DOI: 10.1016/j.gloepi.2024.100136.
Ganglionated Plexus Ablation Procedures to Treat Vasovagal Syncope.
Yarkoni M, Rehman W, Bajwa A, Yarkoni A, Rehman A Int J Mol Sci. 2023; 24(17).
PMID: 37686062 PMC: 10487499. DOI: 10.3390/ijms241713264.
Development of a nomogram model to predict malignant vasovagal syncope in Chinese children.
Sun R, Kang Y, Zhang M, Wang H, Shi L, Li X Front Pediatr. 2023; 11:1158537.
PMID: 37077332 PMC: 10109463. DOI: 10.3389/fped.2023.1158537.
Vasovagal Syncope Is Associated with Variants in Genes Involved in Neurohumoral Signaling Pathways.
Titov B, Matveeva N, Kulakova O, Baulina N, Bazyleva E, Kheymets G Genes (Basel). 2022; 13(9).
PMID: 36140820 PMC: 9498630. DOI: 10.3390/genes13091653.