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Table 5 Comparison of the prevalence of phenotypes between patients with 22q13 deletions encompassing more than SHANK3 gene and loss of SHANK3 alone

From: A 29 Mainland Chinese cohort of patients with Phelan–McDermid syndrome: genotype–phenotype correlations and the role of SHANK3 haploinsufficiency in the important phenotypes

Clinical feature

22q13 deletions encompass more than SHANK3 gene

Loss of SHANK3 alone

P valuea

Physical features

 Microcephalyb

2/11(18%)

1/10(10%)

1.000

 Macrocephalyc

0/11(0%)

1/10(10%)

1.000

 Sparse eyebrows

1/11(9%)

2/10(20%)

0.586

 Long eyelashes

0/11(0%)

1/10(10%)

1.000

 Periorbital fullness

3/11(27%)

2/10(20%)

1.000

 Descending palpebral fissure

4/11(36%)

3/10(30%)

1.000

 Hypertelorism

3/11(27%)

0/10(0%)

0.214

 Strabismus

4/11(36%)

2/10(20%)

0.635

 Epicanthal folds

0/11(0%)

1/10(10%)

1.000

 Wide nasal bridge

2/11(18%)

1/10(10%)

1.000

 Large/wide nose

2/11(18%)

0/10(0%)

1.000

 Bulbous nose

1/11(9%)

2/10(20%)

1.000

 Anteverted nares

0/11(0%)

1/10(10%)

1.000

 Full cheeks

0/11(0%)

1/10(10%)

1.000

 Frontal bossing

2/11(18%)

2/10(20%)

1.000

 Short philtrum

1/11(9%)

0/10(0%)

1.000

 Ear anomalies

1/11(9%)

4/10(40%)

0.149

 Thick lower lip

1/11(9%)

2/10(20%)

0.586

 Down-turned mouth

2/11(18%)

1/10(10%)

1.000

 Short stature/delayed growthd

1/17(6%)

1/12(8%)

1.000

 Tall stature/accelerated growthe

4/17(24%)

1/12(8%)

0.370

Developmental/neurological

 DD/ID

13/15(87%)

10/11(91%)

1.000

 Speech (absent speech versus sentences, age ≥ 3)

8/12(67%)

3/8(38%)

0.370

 Any type of seizures (including febrile seizures)

4/17(24%)

3/12(25%)

1.000

 Overheats or turns red easily

3/17(13%)

2/12(17%)

1.000

 Decreased perspiration

2/17(6%)

0/12(0%)

1.000

 Overly sensitive to touch

3/17(18%)

2/12(17%)

1.000

 Increased pain tolerance

11/17(65%)

7/12(58%)

1.000

 Arachnoid cyst

3/17(18%)

1/12(8%)

0.622

 Hypotonia

12/17(71%)

12/12(100%)

0.059

 Gait abnormalities

10/17(59%)

6/12(50%)

1.000

 Neuroimaging abnormalities

9/12(75%)

4/9(44%)

0.159

Behavioral features

 Autism spectrum disorder (age ≥ 3)

10/17(59%)

7/8(88%)

0.205

 Impulsiveness

11/17(65%)

11/12(92%)

0.187

 Chewing difficulties (difficulty with eating)

5/17(29%)

5/12(42%)

0.694

 Biting (self or others)

5/17(29%)

4/12(33%)

1.000

 Hair pulling

4/17(19%)

5/12(42%)

0.231

 Excessive screaming

3/17(24%)

2/12(17%)

1.000

 Aggressive behavior

5/17(29%)

4/12(33%)

1.000

 Nonstop crying (crying non-stop for 3 h)

6/17(35%)

7/12(58%)

0.274

 Hyperactivity

14/17(82%)

10/12(83%)

1.000

 Self-injury

3/17(24%)

0/12(0%)

0.246

 Pica

1/17(6%)

2/12(17%)

0.553

 Repetitive behaviors

11/17(65%)

9/12(75%)

0.694

 Sleep disturbance

4/17(19%)

3/12(25%)

1.000

 Regression

5/17(29%)

7/11(63%)

0.121

Other clinical features

 Gastroesophageal reflux

2/17(12%)

0/12(0%)

0.498

 Diarrhea/constipation

3/17(24%)

4/12(33%)

1.000

 Genital anomalies

1/15(7%)

0/7(0%)

1.000

 Eczema

4/17(24%)

4/12(33%)

0.683

 Immune deficiency

1/17(7%)

0/12(0%)

1.000

 Recurring upper respiratory tract infections

5/17(29%)

1/12(8%)

0.354

 Hearing loss

1/17(7%)

0/12(0%)

1.000

 Congenital heart defect

2/17(12%)

1/12(8%)

1.000

 Allergies

3/17(24%)

2/12(17%)

1.000

 Asthma

1/17(7%)

0/12(0%)

1.000

  1. aAll P values are Fisher’s Exact
  2. bHead circumference < 3rd percentile
  3. cHead circumference > 98th percentile
  4. dHeight < 3rd percentile
  5. eHeight > 98th percentile