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Genetics of cluster headache: an update.
Lorenzo Pinessi1, Innocenzo Rainero, Chiara Rivoiro
1Neurology III, Headache Center, Department of Neuroscience, University of Turin, Via Cherasco 15, I-10126, Turin, Italy. lorenzo.pinessi@unito.it
The Journal of Headache and Pain
|December 20, 2005
Summary
Recent studies indicate genetic factors contribute to cluster headache (CH). Research shows a higher prevalence in relatives and twin pairs, with a significant association found for the HCRTR2 gene in cluster headache (CH) patients.
Area of Science:
- Genetics
- Neurology
- Epidemiology
Background:
- Cluster headache (CH) was historically not considered an inherited disorder.
- Recent genetic epidemiological surveys suggest a hereditary component.
- Studies show increased CH prevalence in first-degree relatives and concordant monozygotic twins.
Purpose of the Study:
- To review recent advancements in understanding the genetics of cluster headache (CH).
- To highlight the emerging evidence for genetic factors in CH etiology.
Main Methods:
- Review of genetic epidemiological studies on cluster headache.
- Analysis of familial aggregation and twin studies.
- Examination of genetic association studies, including gene mutation screening.
Main Results:
- First-degree relatives of CH patients exhibit higher CH likelihood.
- Concordant monozygotic twin pairs with CH have been reported.
- No mutations found in CACNA1A and NOS genes, but a significant association with the HCRTR2 gene was identified.
Conclusions:
- Genetic factors are increasingly recognized as playing a role in cluster headache (CH).
- The specific genes and their number involved in CH remain under investigation.
- The HCRTR2 gene represents a potential candidate in the genetic basis of CH.