Table 2.

PRNP codon 129 genotype distributions within our multiple system atrophy (MSA) group, healthy controls, and sporadic Creutzfeld-Jakob disease (sCJD)

Genotype	MSA	Controls	sCJDa	MSA vs controls
				Odds ratio (95% CI)	p value
M129V heterozygous	119 (50%)	191 (41.4%)	35 (11.8%)	0.7 (0.5–0.9)	p = 0.03
M129M and V129V homozygous	119 (50%)	271 (58.6%)	265 (88.2%)

Key: CI, confidence interval.

^a- (Parchi et al., 1999).