Tandem Repeats Analyzed

Our whole genome platform detects the characterized repeats listed below.

All of the listed repeats are analyzed by the following Comprehensive Analyses:

Some of the listed repeats are analyzed by our Neurology Analyses and/or Other Targeted Analyses. The relevant tests are noted in the following table.

Gene(s)

Repeat

Disorder

Neurology Analyses and/or Other Targeted Analyses That Include This STR*

AFF2

CCG

Fragile XE syndrome

AR

CAG

Spinal and bulbar muscular atrophy

ARX (2 tracts)

CGC

X-linked Intellectual developmental disorder 29 and Partington syndrome

ATN1

CAG

Dentatorubral-pallidoluysian atrophy (DRPLA)

ATXN1

CAG

Spinocerebellar ataxia 1 (SCA1)

ATXN10

ATTCT

Spinocerebellar ataxia 10 (SCA10)

ATXN2

CAG

Spinocerebellar ataxia 2 (SCA2)

ATXN3

CAG

Spinocerebellar ataxia 3 (SCA3)

ATXN7

CAG

Spinocerebellar ataxia 7 (SCA7)

ATXN80S

CTG

Spinocerebellar ataxia 8 (SCA8)

C9ORF72

GGGGCC

Frontotemporal dementia and/or amyotrophic lateral sclerosis (FTDALS1)

CACNA1A

CAG

Spinocerebellar ataxia 6 (SCA6)

CNBP

CCTG

Myotonic dystrophy type II

CSTB

CCCCGCCCCGCG

Myoclonus epilepsy

DIP2B

CGG

FRA12A fragile site

DMPK

CTG

Myotonic dystrophy type I

FGF14

GAA

Late-onset spinocerebellar ataxia 27B (SCA27B)

FMR1

CGG

Fragile X syndrome

FOXL2

GCN

Blepharophimosis, ptosis, and epicanthus inversus syndrome type II (BPES II)

See comprehensive analyses above

FXN

GAA

Friedreich’s ataxia

GIPC1

GGC

Oculopharyngodistal myopathy 2 (OPDM2)

GLS

GCA

Global developmental delay, progressive ataxia, and elevated glutamine (GDPAG)

HTT

CAG

Huntington disease

JPH3

CTG

Huntington disease-like 2 syndrome

LRP12

CGG

Oculopharyngodistal myopathy 1 (OPDM1)

NOP56

GGCCTG

Spinocerebellar ataxia 36 (SCA36)

NOTCH2NLC

GGC

Neuronal intranuclear inclusion disease

PABPN1

GCN

Oculopharyngeal muscular dystrophy

See comprehensive analyses above

PHOX2B

Alanine

Congenital central hypoventilation syndrome

See comprehensive analyses above

PPP2R2B

CAG

Spinocerebellar ataxia 12 (SCA12)

RFC1

AAGGG and other pathogenic repeats

Cerebellar ataxia, neuropathy, and vestibular areflexia syndrome (CANVAS)

SOX3

GCN

X linked intellectual developmental disorder with isolated growth hormone deficiency X linked panhypopituitarism

See comprehensive analyses above

TBP

Glutamine

Spinocerebellar ataxia 17 (SCA17)

TCF4

CAG

Fuchs endothelial corneal dystrophy

See comprehensive analyses above

VWA1

GGCGCGGAGC

Hereditary distal motor neuropathy with myopathic features (HMNMYO)

ZIC2

GCN

Holoprosencephaly 5

See comprehensive analyses above

ZFHX3

GGC

Spinocerebellar ataxia 4 (SCA4)

* Please note: Genomic Unity® Lightning Genome Analysis, IriSightTM Prenatal Analysis and IriSightTM for Pregnancy Loss are not addressed in this table. Please see the relevant test page for more information about repeats analyzed by these tests.