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. 2015 Aug 26;24(5):652–659. doi: 10.1038/ejhg.2015.178

Table 2. Growth parameters and the key clinical features of KdVS.

  17q21.31 deletion (n=33) KANSL1 variant (n=12) KdVS total (n=45)
Clinical features n % n % n %
Growth parameters
 Low birth weight 7/23 30.4 2/12 16.7 9/35 25.7
 Postnatal short stature 10/24 41.7 2/10 20.0 12/34 35.3
 Microcephaly 1/25 4.0 0/10 0.0 1/35 2.9
 Macrocephaly 3/25 12.0 2/10 20 5/35 14.3
             
Neurological features
 Hypotonia 28/32 87.5 10/12 83.3 38/44 86.4
 Feeding problems 19/25 76.0 8/12 66.7 27/37 73.0
 DD/intellectual disability 33/33 100.0 12/12 100.0 45/45 100.0
  Mild 13/30 43.3 4/11 36.3 17/41 41.5
  Moderate 11/30 36.7 4/11 36.3 15/41 36.6
  Severe 6/30 20.0 3/11 27.2 9/41 22.0
 Motor delay 25/25 100.0 11/12 91.7 36/37 97.3
 Speech delay 24/24 100.0 12/12 100.0 36/36 100.0
 Seizures/EEG anomalies 15/33 45.5 7/12 58.3 22/45 48.9
 Friendly/amiable affect 26/30 88.7 11/12 91.7 37/42 88.7
 Structural CNS anomalies 15/26 57.7 3/8 37.5 18/34 52.9
  Enlarged ventricles 10/27 37.0 3/9 33.3 13/36 36.1
             
Neuropsychological disorders 18/32 56.3 7/12 58.3 25/44 56.8
             
Dysmorphic features
 Long face 23/32 71.9 10/12 83.3 33/44 75.0
 Upslanting palpebral fissures 16/33 48.5 8/11 72.7 24/44 54.5
 Narrow/short palpebral fissures 14/24 58.3 5/10 50.0 19/34 55.0
 Ptosis 12/33 36.4 2/11 18.1 14/44 31.8
 Epicanthal folds 18/33 54.5 5/11 45.5 23/44 52.3
 Tubular or pear-shaped nose 27/32 84.4 7/11 63.6 34/43 81.0
 Bulbous nasal tip 29/32 90.6 9/11 81.8 38/43 88.3
 Everted lower lip 15/24 66.7 9/11 81.8 25/35 71.4
 Large/prominent ears 14/32 43.8 0/11 0.0 14/43 32.6
             
Musculoskeletal anomalies 25/32 78.1 8/11 72.7 33/43 76.7
 Tracheo/laryngomalacia 5/33 15.2 4/11 36.3 9/44 20.9
 Scoliosis/kyphosis 13/33 39.4 4/12 33.3 17/45 37.8
 Joint hyperlaxity 17/30 56.7 7/11 63.6 24/41 58.5
 Positional deformity feet 12/31 38.7 8/11 72.7 20/42 47.6
             
Visual and hearing impairments 16/29 55.2 8/9 72.7 24/38 63.2
 Hypermetropia 10/31 32.3 6/11 54.5 16/42 38.0
 Strabismus 12/33 36.4 6/11 54.5 18/44 40.9
 Hearing impairment 9/28 32.1 1/12 8.3 10/40 25.0
             
Heart defects 11/33 33.3 6/11 54.5 17/44 38.6
             
Renal and urogenital anomalies 14/32 43.8 5/10 50.0 19/42 45.2
 Cryptorchidism 7/14 50.0 3/5 60.0 10/19 52.6
             
Ectodermal abnormalities 21/32 65.6 7/10 70.0 28/42 66.7
 Multiple moles 5/33 15.2 3/11 27.3 8/44 18.2