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Table 1 Clinical features of FXS males [4, 7, 9, 11, 13, 17, 18, 24, 26, 27, 32, 34, 36, 37, 51]

From: Fragile X syndrome: a review of clinical and molecular diagnoses

Features

Frequency

Face

Long/Narrow face

83%

Macrocephaly

81%

Prominent ears

72–78%

High-arched palate

94%

Prominent jaw

80%

Facial hypotonia

NA

Eye puffiness

NA

Closely spaced eyes

NA

Long palpebral fissures

NA

Epicanthal folds

NA

Flat nasal bridge

NA

Broad nose

NA

Broad philtrum

NA

Central nervous system

EEG anomalies

74%

Epilepsy

10–20%

Brain MRI anomalies

Up to 50% of patients with neurologic comorbidities

Neuropsychiatric involvement

Psychomotor delay

~100%

ID

~100%

Aggressiveness

90%

Attention problems

74–84%

Hyperactivity

50–66%

Anxiety Disorder

58–86%

ASD

30–50%

Sleep problems

30%

ADHD

12–23%

Depression

8–12%

Musculoskeletal system

Joint hypermobility

50%

Pectus excavatum

50%

Flat feet

29–69%

Spine deformity

6–9%

Cardiovascular

Mitral valve anomalies

3–12%

Aortic root dilatation

25%

Eye

Refractive errors

17–59%

Strabismus

8–40%

Nystagmus

5–13%

Other

Macroorchidism

63–95%

Obesity/overweight

53–61%

Recurrent otitis media

47–97%

Gastrointestinal complaints

31%

Soft skin

NA

  1. Abbreviations: NA not available, ID intellectual disability, ASD autism spectrum disorder, ADHD anxiety disorder/hyperactivity disorder