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Table 4 Risk factors of autism in the AGRE sample according to epilepsy

From: Does epilepsy in multiplex autism pedigrees define a different subgroup in terms of clinical characteristics and genetic risk?

Risk factors

 

Total (n)

Epilepsy (n)

No epilepsy (n)

Total of individuals

478

63

415

Chromosomal abnormality or genetic condition

14 (2.92%)

4 (6.35%)

10 (2.4%)

 

16p11.2 deletion/duplication

4

2

2

 

15q11–13 duplication

3

1

2

 

22q11.21 duplication

1

0

1

 

22q13.33 duplication

1

0

1

 

t(2;9)(p13;q34.3)

1

1

0

 

Mosaic t(3;16)

1

0

1

 

Mosaic t(3;14)

1

0

1

 

Trisomy 21

1

0

1

 

Mosaic trisomy 12

1

0

1

Prematuritya/pre- or perinatal insult

19 (3.98%)

3 (4.76%)

16 (3.9%)

Cerebral palsy

 

2 (0.42%)

0

2 (0.48%)

Abnormal cerebral imaging

3 (0.63%)

2 (3.17%)

1 (0.24%)

 

Agenesis of corpus callosum

1

1

0

 

Left frontal damage

1

1

0

 

Not given

1

0

1

Other significant abnormality

4 (0.84%)

1 (1.59%)

3 (0.72%)

 

Significant dysmorphology

2

0

2

 

Mitochondrial disorder, mild tonsillectomy (premature puberty)

1

1

0

 

Cranial nerve paralysis (congenital versus traumatic)

1

0

1

Total of individuals with abnormalitiesb

42 (8.8%)

10 (15.9%)

32 (7.71%)

  1. aDefined as delivery before 35 weeks of gestational age for single births or before 33 weeks of gestational age for twin births; bP = 0.052. AGRE, Autism Genetic Resource Exchange.