Table I.
Demographic characteristics, history of multiple primary melanomas and phenotypic characteristics according to CDKN2A status
| CDKN2A+ | CDKN2A− | Total | ||
|---|---|---|---|---|
| (n = 24) | (n = 28) | (n = 52) | ||
| Sex, n (%) | ||||
| Male | 11 (45.8) | 6 (21.4) | 17 (32.7) | 0.061 |
| Female | 13 (54.2) | 22 (78.6) | 35 (67.3) | |
| Age, mean ± SD | 41.1 ± 11.5 | 53.6 ± 14.2 | 47.8 ± 14.4 | 0.001 |
| Multiple primary melanomas,n (%) | ||||
| Yes | 6 (25.0) | 1 (3.6) | 7 (13.5) | 0.040* |
| No | 18 (75.0) | 27 (96.4) | 45 (86.5) | |
| Phenotypic characteristics, n (%) | ||||
| Eyes (missing values: 3) | ||||
| Blue | 1 (4.6) | 7 (25.9) | 8 (16.3) | 0.109* |
| Green | 9 (40.9) | 5 (18.5) | 14 (28.6) | |
| Light-brown | 3 (13.6) | 6 (22.2) | 9 (18.4) | |
| Dark-brown | 9 (40.9) | 9 (33.3) | 18 (36.7) | |
| Hair (missing values: 2) | ||||
| Blonde | 4 (18.2) | 2 (7.1) | 6 (12.0) | 0.134* |
| Red | 1 (4.6) | 0 (0) | 1 (2.0) | |
| Light-brown | 10 (45.5) | 9 (32.1) | 19 (38.0) | |
| Dark-brown | 7 (31.8) | 13 (46.4) | 20 (40.0) | |
| Black | 0 (0) | 4 (13.8) | 4 (8.0) | |
| Skin colour (missing values : 2) | ||||
| White | 17 (77.3) | 17 (60.7) | 34 (68.0) | 0.213 |
| Brown (light, dark) | 5 (22.7) | 11 (39.3) | 16 (32.0) | |
| Phototype (missing values: 2) | ||||
| Type IIa | 14 (63.6) | 14 (50.0) | 28 (56.0) | |
| Type IIIb | 6 (27.3) | 6 (21.4) | 12 (24.0) | |
| Type IVc | 2 (9.1) | 8 (28.6) | 10 (20.0) | 0.253* |
| Number of naevi (missing values: 6) | ||||
| <30 | 8 (47.1) | 20 (74.1) | 28 (63.6) | 0.070 |
| ≥30 | 9 (52.9) | 7 (25.9) | 16 (36.4) | |
a
Always burn, minimal tan.
b
Burn then tan well.
c
No burn, tan well.
*
Fisher’s exact test. SD: standard deviation.