Table 1.
Finding | Prevalence (%) |
---|---|
Typical facial features* |
~ 95 |
Intellectual disability |
92 |
Hypotonia |
25-89 |
Postnatal growth retardation |
35-81 |
Joint hypermobility |
50-75 |
Feeding difficulties |
70 |
Congenital heart defects |
40-50 |
Premature thelarche |
7-50 |
Hearing loss |
40 |
Seizures |
10-39 |
Ocular anomalies |
33 |
Cleft lip and/or palate |
33 |
Renal and urinary tract anomalies |
25 |
Immune dysfunction: |
~ 20 |
Hypogammaglobulinemia, |
|
Idiopathic Thrombocytopenic Purpura (ITP), Autoimmune haemolytic anemia, |
|
Thyroiditis |
|
Vitiligo |
*Elongated palpebral fissures with eversion of the lateral third of the lower eyelid; Arched and broad eyebrows; Short columella with depressed nasal tip; and large, Prominent, or cupped ears.