Table 1.
Demographic, clinical and mutation characteristics of the sample
| Characteristic | Category | N | (%) |
|---|---|---|---|
| Age at CRC diagnosis | Under 30 yrs old | 13 | 14.8 |
| 31-50 yrs old | 54 | 61.4 | |
| Over 50 yrs old | 21 | 23.9 | |
| Sex | Female | 58 | 65.9 |
| Male | 30 | 34.1 | |
| Ethnicity (self-reported) | White | 55 | 62.5 |
| "Pardo"* | 31 | 35.2 | |
| Non-available | 2 | 2.3 | |
| Place of Birth | Southeast | 67 | 76.1 |
| Northeast | 12 | 13.6 | |
| South | 3 | 3.4 | |
| North | 2 | 2.3 | |
| Midwest | 2 | 2,3 | |
| Colorectal tumor | Separate | 78 | 88.6 |
| Synchronous | 9 | 10.2 | |
| Metachronous | 1 | 1.1 | |
| Extracolonic tumors in proband | Endometrial | 6 | 6.8 |
| Breast | 3 | 3.4 | |
| Stomach | 2 | 2.3 | |
| Small intestine | 2 | 2.3 | |
| Hepatic | 1 | 1.1 | |
| Pelvis renal and ureter | 1 | 1.1 | |
| Ovary | 1 | 1.1 | |
| Classification according to family history | Bethesda Criteria | 50 | 56.8 |
| Amsterdam Criteria | 38 | 43.2 | |
| Patogenic mutations | None | 57 | 64.8 |
| MLH1 | 15 | 17.0 | |
| MSH2 | 16 | 18.2 |
*Those who declare with admixture or multiethnic origin