Skip to main content
. Author manuscript; available in PMC: 2019 May 6.
Published in final edited form as: Am J Med Genet A. 2016 Sep 19;170(11):2870–2881. doi: 10.1002/ajmg.a.37688

TABLE IV.

Medical Features in Triple X Syndrome

Medical feature Prior reportsd (%) Total number (%) Prenatal diagnosis (%) Postnatal diagnosis (%) P
Ophthalmologic disorders
 Congenital cataracts 2/74 (2.7) 0/44 (0) 2/30 (6.7)
 Strabismus 11/74 (14.9) 6/44 (13.6) 5/30 (16.7) 0.749
ENT disorders
 Recurrent otitis media 15/72 (21.1) 12/44 (27.3) 3/28 (10.7) 0.137
 Cleft palate/velopharyngeal insufficiency 3/73 (4.1) 2/43 (4.7) 1/30 (3.3)
 Dental disordersa 32/72 (44.4) 19/42 (45.2) 13/30 (43.3) 1.000
Respiratory disorders
 Asthma 16/71 (22.5) 9/43 (20.9) 7/28 (25.0) 0.774
 Hospitalization for respiratory infection or asthma 12/74 (16.2) 3/44 (6.8) 9/30 (30.0) 0.011*
Cardiac disorders
 Congenital heart defectsb 6/74 (8.1) 4/44 (9.1) 3/30 (10.0) 1.000
Gastrointestinal disorders
 Gastroesophageal reflux 6/74 (8.1) 2/44 (4.5) 4/30 (13.3) 0.215
 Constipation 34/74 (45.9) 15/44 (34.1) 19/30 (63.3) 0.018*
 Functional abdominal pain 12–45% 14/74 (18.9) 9/44 (20.5) 5/30 (16.7) 0.769
Genitourinary disorders
 Genitourinary abnormalitiesc 5–16% 9/74 (12.2) 7/44 (15.9) 2/30 (6.7) 0.296
Musculoskeletal disorders
 Congenital hip dysplasia 2–12% 2/74 (2.7) 2/44 (4.5) 0/30 (0)
 Clubfoot 2/74 (2.7) 2/44 (4.5) 0/30 (0)
Neurologic disorders
 Seizure disorder 11–15% 12/74 (16.2) 1/44 (2.3) 11/30 (36.7) <0.001*,**
 Headaches 13/73 (17.8) 4/43 (9.3) 9/30 (30.0) 0.031*
 Tremor 6–20% 12/74 (16.2) 5/44 (11.4) 7/30 (23.3) 0.208
Other
 Environmental or food allergies 21/74 (28.4) 12/44 (27.3) 9/30 (30.0) 0.799
a

Dental disorders included: poor dentition classified as four or more caries/fillings, significant malocclusion, current, or previous orthodontia.

b

Congenital heart defects included: atrial septal defect (n = 3) and ventricular septal defect (n = 5).

c

Genitourinary abnormalities included: cystic dysplastic kidneys (n = 4), unilateral kidney (n = 1), ureter malformation (n = 1), bilateral hydronephrosis (n = 3).

*

P = 0.05 or less.

**

Result remained statistically significant after correction for multiple comparisons.