raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:595109

Atypical Timothy syndrome

Synonyms: ATS · Atypical LQT8

Type
Clinical subtype
Group
Subtype of disorder
Inheritance
Autosomal dominant
Age of onset
Antenatal, Neonatal
Status
active

This disease is described under Timothy syndrome

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enAtypical Timothy syndromeATS · Atypical LQT8
frSyndrome de Timothy atypiqueATS · LQT8 atypique
deTimothy -Syndrom, atypischesATS · LQT8, atypisches
esSíndrome de Timothy atípicoLQT8 atípico
itSindrome di Timothy atipicaATS · LQT8 atipica
nlAtypisch syndroom van TimothyATS · Atypisch LQT8
ptSíndrome Timothy atípicoATS · LQT8 atípico
plZespół Timothy atypowyLQT8 atypowy
csAtypický syndrom Timothyové= en
ukАтиповий синдром ТимотіATS · Атиповий LQT8
zhAtypical Timothy syndrome= en
trAtypical Timothy syndrome= en
2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10I49.8NTBTattributedvalidated
ICD-11BC65.0NTBTattributedvalidated
MONDO0021172Evalidated
UMLSC5575746Evalidated

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 (1):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
CACNA1CDisease-causing germline mutation(s) inAssessedHGNC:1390ENSG0000015106711420512p13.33calcium voltage-gated channel subunit alpha1 C34079780[PMID]
5

Prevalence and incidence

0 records

No prevalence record in this release.

6

HPO phenotypes

Orphanet has no HPO annotation for this code in this release.

7

Sources for this card