Table 1 Demografic and clinical characteristics of the 114 patients with NF1 included in the study.

From: Bone metabolism in patients with type 1 neurofibromatosis: key role of sun exposure and physical activity

Feature

Mild phenotype (n = 31)

Moderate (n = 39)

Severe phenotype (n = 44)

Whole cohort (n = 114)

Mean age (average) ± SD

13 ± 6.0 years (2–22 years)

12 ± 6.9 years (2–22 years)

12.3 ± 5.9 years (1–23 years)

11.9 ± 5.6 years (1–23 years)

No mutation

N = 8

N = 8

N = 8

N = 24

Gender

M = 12; F = 19

M = 13; F = 26

M = 20; F = 24

M = 45; F = 69

CALMs

31 (100%)

39 (100%)

44 (100%)

114 (100%)

Lisch nodules

11 (35.4%)

20 (51. 3%)

25 (56.8%)

56 (49.1%)

Axillary and/or inguinal freckling

23 (74.2%)

33 (84.6%)

33 (75%)

89 (78%)

Plexiform neurofibroma

0 (0.0%)

6 (15.3%)

9 (20.4%)

15 (13.2%)

Mild non-progressive scoliosis

12 (38.7%)

18 (46.1%)

NA

4 40 (35.1%)

Progressive scoliosis

0 (0.0%)

14 (35.9%)

25 (56.8%)

39 (34.2%)

Heart involvement

4 (12.9%)

7 (17.9%)

12 (27.3%)

23 (20.2%)

OPG

0 (0.0%)

0 (0.0%)

27 (61.4%)

27 (23.6%)

Other tumors

0 (0.0%)

0 (0.0%)

17 (38.6%)

17 (14.9%)

Development delay and/or cognitive deficit

0 (0.0%)

0 (0.0%)

28 (63.6%)

28 (24.5%)

  1. F females, M males, NA not available.