Ca. Foy et al., THE ANGIOTENSIN-I CONVERTING-ENZYME (ACE) GENE I D POLYMORPHISM AND ACE LEVELS IN PIMA-INDIANS/, Journal of Medical Genetics, 33(4), 1996, pp. 336-337
An insertion/deletion (I/D) polymorphism of the angiotensin converting
enzyme (ACE) gene is associated with plasma ACE levels in white popul
ations. The occurrence of the I/D polymorphism and relationship to ACE
levels was examined in a Pima Indian group (n=305). The frequency of
the D allele was lower in Pimas than whites (0.29 v 0.52 respectively)
. ACE levels were significantly associated with genotype in both group
s (p = 0.0001), which accounted for 6.5% of the variation in ACE level
s in Pimas and 18% in whites. The association of the I/D polymorphism
with ACE levels confirms the relationship across ethnic groups. The lo
w frequency of the D allele in Pima Indians shows that ethnic differen
ces should be accounted for when studying the ACE gene.