Table 1

Genotype and allele distributions of the DCP1 I/D polymorphism in the AD, PD, PD(B+C), and control groups

GroupGenotypesAlleles
IIIDDDID
ADn=8016  (0.20)49  (0.61)15  (0.19)1-150 81  (0.51)79  (0.49)
PDn=5312 (0.23)27 (0.51)14 (0.26)51 (0.48)55 (0.52)
PD(B+C)n=349 (0.26)19 (0.56)6 (0.18)37 (0.54)31 (0.46)
Controlsn=6710 (0.15)31 (0.46)26 (0.39)51 (0.38)83 (0.62)
ε4 carriers
ADn=5712 (0.21)33 (0.58)12 (0.21)57 (0.50)57 (0.50)
PDn=236 (0.26)12 (0.52)5 (0.22)24 (0.52)22 (0.48)
PD (B+C)n=186 (0.33)10 (0.56)2 (0.11)22 (0.61)14 (0.39)
Controlsn=171 (0.06)8 (0.47)8 (0.47)10 (0.29)24 (0.71)
ε4 non-carriers
ADn=234 (0.17)16 (0.70)3 (0.13)24 (0.52)22 (0.48)
PDn=306 (0.20)15 (0.50)9 (0.30)27 (0.45)33 (0.55)
PD (B+C)n=163 (0.19)9 (0.56)4 (0.25)15 (0.47)17 (0.53)
Controlsn=509 (0.18)23 (0.46)18 (0.36)41 (0.41)59 (0.59)