Table 3. The allelic frequencies and associations between reduced sperm counts and common polymorphisms in the MTRR gene.
Gene | SNP | AA substitution | Genotype | Cases | Controls | Odds Ratio (95%CI) | Chi2 | p value | |||||||
Azoospermic | Oligozoospermic | ||||||||||||||
n | % | n | % | n | % | Azoospermic | Oligozoospermic | Azoo | Oligo | Azoo | Oligo | ||||
MTRR | c.66A>G | p.122M | GG | 19 | 28.79 | 61 | 35.26 | 42 | 37.84 | ||||||
AG | 39 | 59.09 | 93 | 53.76 | 57 | 51.35 | 1.512 (0.768–2.978) | 1.123 (0.672–1.876) | 1.438 | 0.198 | 0.2304 | 0.6566 | |||
AA | 8 | 12.12 | 19 | 10.98 | 12 | 10.81 | 1.474 (0.518–4.195) | 1.090 (0.479–2.481) | 0.531 | 0.042 | 0.4661 | 0.837 | |||
AG+AA | 47 | 71.21 | 112 | 64.74 | 69 | 62.16 | 1.506 (0.781–2.904) | 1.118 (0.682–1.833) | 1.501 | 0.194 | 0.2205 | 0.6593 | |||
A allele frequency | 55 | 41.67 | 131 | 37.86 | 81 | 36.49 | 1.501 (0.791–2.850) | 1.114 (0.689–1.802) | 1.551 | 0.192 | 0.213 | 0.6611 | |||
c.524C>T | p.S175L | CC | 29 | 41.43 | 61 | 34.08 | 35 | 31.53 | |||||||
CT | 30 | 42.86 | 78 | 43.57 | 60 | 54.05 | 0.603 (0.312–1.166) | 0.746 (0.437–1.274) | 2.271 | 1.157 | 0.1318 | 0.2821 | |||
TT | 11 | 15.71 | 40 | 22.35 | 16 | 14.42 | 0.830 (0.333–2.066) | 1.434 (0.703–2.927) | 0.161 | 0.987 | 0.6881 | 0.3205 | |||
CT+TT | 41 | 58.57 | 118 | 65.92 | 76 | 68.47 | 0.651 (0.344–1.212) | 0.891 (0.537–1.478) | 1.84 | 0.201 | 0.175 | 0.6542 | |||
T allele Frequency | 52 | 37.14 | 158 | 44.13 | 92 | 41.44 | 0.682 (0.375–1.240) | 0.985 (0.604–1.606) | 1.578 | 0.003 | 0.2091 | 0.9529 |