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Updated: Aug 12, 2026
15:09
The Use of Primary Human Fibroblasts for Monitoring Mitochondrial Phenotypes in the Field of Parkinson's Disease
Published on: October 3, 2012
Summary
Current evidence does not support heredity as a primary cause of Parkinson disease (PD). Studies show familial Parkinson disease aggregations are often other neurological disorders, not PD itself.
Area of Science:
- Neurology
- Genetics
Background:
- The role of heredity in Parkinson disease (PD) etiology has been long hypothesized.
- Early studies suggested a genetic link through family histories and kindreds.
Purpose of the Study:
- To critically evaluate the evidence for a hereditary role in Parkinson disease (PD) etiology.
- To differentiate PD from other familial parkinsonism disorders.
Main Methods:
- Review of clinical data from familial aggregations of parkinsonism.
- Analysis of case-control studies on PD prevalence in first-degree relatives.
- Examination of twin concordance rates (monozygotic vs. dizygotic).
Main Results:
- Familial parkinsonism aggregations often represent other disorders like OPCA and multiple system atrophy.
- Case-control studies show no significantly higher PD prevalence in first-degree relatives.
- Twin studies reveal low and non-significant concordance rates for PD in monozygotic twins compared to dizygotic twins.
Conclusions:
- Available data do not support a significant role for heredity in the etiology of Parkinson disease (PD).
- While a strong hereditary component is unlikely, a nonhereditary genetic defect cannot be excluded.
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