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Table 1 Phenotype information of patients included in the study

From: SNP arrays: comparing diagnostic yields for four platforms in children with developmental delay

Patient

Sex

Age a

Diagnosis b

Dysmorphism

Malformation(s)

Other

1.1

F

12 y

ID

Yes

Multiple: multicystic dysplastic kidney (left), ventriculomegaly, temporal white matter loss, pectus excavatum

Deafness, myopia, nystagmus, dysphagia, mild scoliosis

3.2

M

6 mo

Growth delay

Yes

Cerebral: microcephaly, gyral simplification, myelination delay

Spastic quadriparesis

6.3

M

11 y

PDD, mild ID

Yes

Mild: pectus excavatum

Café au lait spots. Mother: school difficulties, epilepsy, murmur, arthrosis

10.4

M

7 y

Global DD, PDD

No

No

Hypotonia, café au lait spots, pes planus

11.4

M

13 y

Global DD

No

No

Simple febrile convulsions, hypotonia, diminished deep tendon reflexes

14.5

F

14 y

Mild ID, growth delay

Yes

Multiple: microcephaly, thick corpus callosum, malocclusion, filum terminale lipoma, sacral agenesis

Feeding difficulties

17.6

M

3 y

DD, autism

No

No

-

20.7

M

18 mo

Speech delay

Yes

Craniofacial: trigonocephaly, labiopalatine cleft

Heterochromia, facial asymmetry

23.8

M

13 y

DD, mild ID

No

Multiple: cerebellar atrophy, malocclusion, valgus feet

Ataxia

26.9

M

5 y

Global DD, mild ID

Yes

No

Obesity, ataxia, buccolingual dyspraxia, increased lactates (blood & LCR)

29.10

M

17 y

ID, autism

Yes

No

Obesity, retinitis pigmentosa

32.11

M

2 y

DD

Yes

Cerebral: microcephaly, pons size slightly reduced, 4th ventricle size slightly increased

Short stature, epilepsy, gastroesophageal reflux

35.12

M

17 mo

Global DD

Yes

Multiple: optic atrophy, thin corpus callosum, cerebral atrophy, myelination delay

Epilepsy, hypotonia, mild limb spasticity

38.13

F

6 y

ID

No

No

-

41.14

M

22 mo

Global DD

Yes

No

Ligament hypermobility. Father: learning disability

44.15

M

4 y

DD, autism

No

Craniofacial: submucosal palatine cleft

Velopharyngeal insufficiency

47.16

M

3 y

Global DD

No

Pulmonary valve stenosis

Gastroesophageal reflux

50.17

F

10 y

Global DD

No

No

Epilepsy

53.18

M

5 y

Global DD

No

No

Tall stature

56.19

F

11 y

Mild ID

No

No

Strabismus

59.20

F

34 mo

Atypical development

No

No

Mild facial asymmetry

  1. ay: years, mo: months.
  2. bID: intellectual disability, PDD: pervasive developmental disorder, DD: developmental delay.