raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:436174

Cataract-growth hormone deficiency-sensory neuropathy-sensorineural hearing loss-skeletal dysplasia syndrome

Synonyms: CAGSSS

Type
Disease
Group
Disorder
Inheritance
Autosomal recessive
Age of onset
Childhood, Infancy
Status
active

A rare mitochondrial disease characterized by a highly variable phenotypic spectrum comprising delayed motor development, peripheral neuropathy, cataract, short stature due to growth hormone deficiency, nystagmus, sensorineural hearing loss, dysmorphic facial features, and skeletal abnormalities consistent with spondyloepimetaphyseal dysplasia. Hyperextensible joints, achalasia, and telangiectasia have also been described. Cognition is normal. Atrophy of the pituitary gland has been observed in brain imaging.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enCataract-growth hormone deficiency-sensory neuropathy-sensorineural hearing loss-skeletal dysplasia syndromeCAGSSS
frSyndrome de cataracte-insuffisance somatotrope-neuropathie sensorielle-surdité neurosensorielle-dysplasie squelettiqueCAGSSS · Syndrome de cataracte-déficit en hormone de croissance-neuropathie sensorielle-surdité neurosensorielle-dysplasie squelettique
deKatarakt-Wachstumshormonmangel-sensorische Neuropathie-sensorineurale Schwerhörigkeit-Skelettdysplasie-Syndrom= en
esSíndrome de catarata-deficiencia de hormona de crecimiento-neuropatía sensitiva-hipoacusia neurosensorial-displasia esquelética= en
itSindrome cataratta-deficit dell'ormone della crescita-neuropatia sensoriale-sordità neurosensoriale-displasia scheletrica= en
nlCataract - deficiëntie van groeihormoon - sensorische neuropathie - sensorineuraal gehoorverlies - skeletdysplasie-syndroom= en
ptSíndrome de catarata-deficiência de hormona de crescimento-neuropatia sensitiva-perda auditiva neurossensorial-displasia esquelética
plZespół zaćmy, niedoboru hormonu wzrostu, neuropatii czuciowej, czuciowo-nerwowej utraty słuchu i dysplazji szkieletowej= en
csSyndrom zahrnující kataraktu, deficit růstového hormonu, senzorickou neuropatii, senzorineurální ztrátu sluchu a kostní dysplázii= en
ukСиндром катаракти-дефіциту гормону росту-сенсорної нейропатії-сенсоневральної приглухуватості-скелетної дисплазії= en
zh白内障-生长激素缺乏症-感觉神经病-感觉神经性听力减退-骨骼发育不良综合征= en
trKatarakt-büyüme hormonu eksikliği-duyusal nöropati-sensörinöral işitme kaybı-iskelet displazi sendromu= en

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM616007Evalidated
ICD-10Q87.8NTBTattributedvalidated
ICD-115C53.2ZNTBTattributedvalidated
MONDO0014455Evalidated
UMLSC4014942Evalidated

E exact · NTBT this ORPHAcode is narrower than the target · BTNT broader than the target · ND not decided.

3

Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (9):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
IARS2Disease-causing germline mutation(s) (loss of function) inAssessedHGNC:29685ENSG000000677046128011q41isoleucyl-tRNA synthetase 2, mitochondrial25130867[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families3 casesWorldwideCase(s)Validated25130867[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_25130867[PMID]

Value is Orphadata's ValMoy: the mean estimate per 100 000 for prevalence and incidence, the number of cases or families for case reports.

6

HPO phenotypes

24 annotations · validated 2015-09-23
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0002571Achalasia
HP:0008619Bilateral sensorineural hearing impairment
HP:0000518Cataract
HP:0008445Cervical spinal canal stenosis
HP:0000824Decreased response to growth hormone stimulation test
HP:0000519Developmental cataract
HP:0003162Fasting hypoglycemia
HP:0002857Genu valgum
HP:0002827Hip dislocation
HP:0001270Motor delay
HP:0000160Narrow mouth
HP:0007470Periarticular subcutaneous nodules
HP:0009830Peripheral neuropathy
HP:0000399Prelingual sensorineural hearing impairment
HP:0000408Progressive sensorineural hearing impairment
HP:0011220Prominent forehead
HP:0002650Scoliosis
HP:0000407Sensorineural hearing impairment
HP:0004322Short stature
HP:0002652Skeletal dysplasia
HP:0003416Spinal canal stenosis
HP:0002655Spondyloepiphyseal dysplasia
HP:0000574Thick eyebrow
HP:0005659Thoracic kyphoscoliosis

Run the differential on the 12 obligate / very frequent terms

Annotation source: 25130867[PMID]_8409271[PMID]

7

Sources for this card