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Table 1 Number of different genotype combinations of the MTHFR 677C→Ta and 1298 A→Cb polymorphism in 167 HD patients

From: Failure to confirm influence of Methyltetrahydrofolate reductase (MTHFR) polymorphisms on age at onset of Huntington disease

MTHFR 677CC (%) 677CT (%) 677TT (%)
genotype n = 71 n = 75 n = 21
1298AA (n = 80) 23 (13.7) 37 (22.1) 20 (12)
1298AC (n = 74) 35 (21) 38 (22.8) 1 (0.6)
1298CC(n = 13) 13(7.8) 0 0
  1. aAllele frequency of MTHFR 677T amounts to 0.35.
  2. bAllele frequency of MTHFR 1298C amounts to 0.29.