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Table 2 Population I (FAP and AFAP): The table lists combination of genotypes (1 = wildtype genotype, 2 = heterozygote genotype and 3 = variant genotype) and phenotypic FAP group (1 = APC, 2 = APC MCR and 3 = APC AFAP) for each SNP and age where 50% of population I is polyposis free for each genotype. The mutation group/SNP interaction is the p-value from a joint test of the interaction parameters of a Cox model

From: CD36 – a plausible modifier of disease phenotype in familial adenomatous polyposis

SNP genotype

Age where 50% of population is polyposis free for each genotypea

Test equality of survivor functions

Cox model Mutationgroup/SNP interaction

APC (mutation group 1)

APC MCR (mutation group 2)

APC AFAP (mutation group 3)

p-values

p-values Wald-test

1

2

3

1

2

3

1

2

3

Log-Rank

Tarone-ware

Wilcoxon

 

rs1049673

38

37

29

29

25

36

49

46

38

0.0082

0.0062

0.0057

0.3090

rs1761667

39

37

34

36

41

16

58

38

49

0.0010

0.0011

0.0015

0.0663

rs1984112

35

37

39

16

32

42

49

42

51

0.0036

0.0007

0.0001

0.4608

  1. aGenotypes: 1 = wildtype, 2 = heterozygous and 3 = variant