Table 2 Relative genotype and allele frequencies of the COL1A1 Sp1 binding site polymorphism within the control and ACL rupture group and its subgroups
Controls(n = 130)ACL(n = 117)ACL subgroups, based on mechanism of injury
Direct(n = 15)Indirect(n = 18)Non-contact(n = 50)
GG genotype, %70.0 (n = 91)68.4 (n = 80)80.0 (n = 12)66.7 (n = 12)72.0 (n = 36)
GT genotype, %25.4 (n = 33)31.6 (n = 37)20.0 (n = 3)33.3 (n = 6)28.0 (n = 14)
TT genotype, %*4.6 (n = 6)0.0 (n = 0)0.0 (n = 0)0.0 (n = 0)0.0 (n = 0)
G allele, %82.7 (n = 215)84.2 (n = 197)90.0 (n = 27)83.3 (n = 30)86.0 (n = 86)
T allele, %17.3 (n = 45)15.8 (n = 37)10.0 (n = 3)16.7 (n = 6)14.0 (n = 14)
  • ACL, anterior cruciate ligament.

  • *Owing to the absence of participants with a TT genotype in the ACL group and three subgroups, the GT and TT participants were combined and compared with the GG participants.

  • Controls vs ACL genotypes, p = 0.890.

  • Controls vs ACL, TT genotype vs GG + GT genotypes, p = 0.031, OR = 0.08, 95% CI <0.01 to 1.46.

  • Controls vs non-contact genotypes, p = 0.935.

  • Controls vs ACL alleles, p = 0.745.

  • Controls vs non-contact alleles, p = 0.548.

  • Data are % (n).