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The Stroke Preclinical Assessment Network Multi-Laboratory Model of Thromboembolic Stroke with Thrombolysis: TE-MCAo
Published on: December 19, 2025
Catechol-O-methyltransferase polymorphism influences outcome after ischemic stroke: a prospective double-blind study
Joachim Liepert1, Andreas Heller, Gusalija Behnisch
1Department of Neurorehabilitation, Kliniken Schmieder, Allensbach, Germany. j.liepert@kliniken-schmieder.de
Neurorehabilitation and Neural Repair
|April 4, 2013
Summary
Genetic variations in catechol-O-methyltransferase (COMT) influence stroke recovery. Patients with COMT Val/Val alleles showed better motor function and daily living abilities, though rehabilitation effectiveness was similar across genotypes.
Area of Science:
- Neuroscience
- Genetics
- Rehabilitation Medicine
Background:
- Ischemic stroke significantly impacts motor function and daily living activities.
- Dopamine metabolism, influenced by genetic variations, may affect neurological recovery.
- Understanding genetic predispositions can optimize post-stroke rehabilitation strategies.
Purpose of the Study:
- To investigate the association between catechol-O-methyltransferase (COMT) gene polymorphisms and outcomes in ischemic stroke patients undergoing neurological rehabilitation.
- To determine if specific COMT genotypes influence the effectiveness of rehabilitation therapy and long-term functional recovery.
Main Methods:
- Assessed 78 moderately affected stroke patients using the Barthel Index (BI) and Rivermead Motor Assessment (RMA) at baseline, 4 weeks, and 6 months post-rehabilitation.
- Determined catechol-O-methyltransferase (COMT) gene polymorphisms (Val/Val, Val/Met, Met/Met) in all participants.
- Analyzed functional outcomes (BI and RMA scores) in relation to COMT genetic profiles.
Main Results:
- COMT Val/Val allele carriers demonstrated superior performance on both BI and RMA compared to COMT Met/Met carriers across all assessment points.
- A gene-dose effect was observed, with Val/Met heterozygotes showing intermediate results.
- High correlation was found between BI and RMA scores, indicating consistent functional assessment.
Conclusions:
- Stroke patients with the COMT Val/Val genotype exhibit enhanced motor function and activities of daily living from the outset of rehabilitation.
- Despite baseline differences, all patient groups achieved comparable improvements through rehabilitation therapy, suggesting universal effectiveness of physical therapy across COMT polymorphism subtypes.
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