The insertion/deletion polymorphism of the angiotensin converting enzyme (ACE) in Parkinson's disease.

Open Neurol J · 2008 · PMC2627518 · PMID 19452013

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marginally non-significantno p-value reported

When results were analyzed by groups defined by phenotype and not by genotype, a marginally non-significant result was revealed: there were only 9 DD homozygotes (26.5%) in the patients with an initial tremor-dominant form of PD (n=34) compared to 21 DD homozygotes (48.8%) in the bradykinesia-rigidity dominant form (n=43) (Fisher exact test p=0.061 and Pearson χ 2 test p=0.061).

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