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. 2017 Nov 22;25(2):L1–L5. doi: 10.1530/ERC-17-0286

Table 2.

Number of gastroenteropancreatic (GEP) neuroendocrine neoplasia (NEN) patients with and without missense variants in the TSC2 and RET genes compared to unaffected individuals from the ExAC database.

TSC2 missense variants RET missense variants
Carriers Non-carriers Odds ratio (Pvalue) CI (95%) Carriers Non-carriers Odds ratio (Pvalue) CI (95%)
GEP NEN group 8 85 1 92
ExAC (European non-Finnish) 107 3958 OR = 3.5 (P = 0.004) Lower: 1.42
Upper: 7.42
127 11,742 OR = 1 (P = 1) Lower: 0.02
Upper: 5.84
ExAC (Latin American) 52 2480 OR = 4.48 (P = 0.001) Lower: 1.78
Upper: 9.90
11 789 OR = 0.78 (P = 1) Lower: 0.01
Upper: 5.48
ExAC (all populations) 340 9491 OR = 2.63 (P = 0.016) Lower: 1.09
Upper: 5.47
145 10,833 OR = 0.81 (P = 1) Lower: 0.02
Upper: 4.71

The European non-Finnish samples are considered the closest ancestry population to our series. Because the sample size of the ExAC database varies among genes and sites, we conservatively inferred the number of individuals with and without deleterious variants by multiplying the frequency of the variants of interest and the sample size of the least sampled site for each of the three partitions of the data: European non-Finnish, Latin American and unfiltered. For example, in the European ExAC dataset, the TSC2 genomic region with the lowest sample size has 2N = 8130 alleles, corresponding to 4065 individuals. As there are 107 rare variants in this sample, we assumed they represent 107 individuals within the group. All analyses were statistically significant (Fisher’s exact test).