Table 1.
Clinical features of the patient, 17p+ and del16q12/Townes– Brocks syndromes
| Patient2 | 17p+ syndrome1 | Del 16q12/Townes Brocks syndrome3 | |
|---|---|---|---|
| Low birth weight | + | + | |
| Failure to thrive | + | + | + |
| Short stature | + | + | + |
| Hypotonia | + | ++ | + |
| Microcephaly | + | ++ | |
| Broad nasal bridge | + | ||
| High arched palate | + | ||
| Broad forehead | + | + | + |
| Down-slanted palpebral fissures | + | + | |
| Long nasal tip | + | + | |
| Triangular face | + | ||
| Micrognathia | + | + | + |
| Low-set dysplastic ears | + | ++ | |
| Congenital heart defects | + | ++ | |
| Renal anomalies | + | ++ | |
| Inguinal hernia | + | ||
| Umbilical hernia | + | ++ | |
| Gastroesophageal reflux | + | ++ | ++ |
| Anal stenosis/imperforate anus | ++ | ||
| Anomalies of internal/external genitalia | ++ | ||
| Scoliosis | + | + | |
| Broad/bifid thumb | ++ | ||
| Triphalangeal thumb | + | ++ | |
| Hypoplastic thumb | + | ++ | |
| Preaxial polydactyly | ++ | ||
| Finger/toes syndactyly | + | ++ | |
| Metatarsal anomalies | ++ | ||
| Congenital dislocation of the hips | + | + | |
| Cubital deviation of the fingers | + | + | |
| Clubfoot | + | + | |
| Left facial nerve paralysis | + | [+] | |
| Oral–pharyngeal dysphagia | + | ++ | |
| Mental retardation | + | ++ | ++ |
| Language/cognitive impairment | + | ++ | |
| Epilepsy/EEG abnormalities | ++ | ||
| Autistic features | ++ | ||
| Sleep apnea | ? | ++ | |
| Hypermetropia | ? | ++ | |
| Hearing impairment | ? | + | ++ |
?, not specifically explored; ++, features observed in more than 70% of the patients with the common duplication; [+], Though not strictly described as facial palsy, an asymmetric smile is seen in many photographs of these patients. ++, those features found also in Townes–Brocks syndrome.
Features described in duplications 17p11.2 syndrome [5].
Features found in the patient.