raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:319678

Encephalopathy-hypertrophic cardiomyopathy-renal tubular disease syndrome

Type
Disease
Group
Disorder
Inheritance
Autosomal recessive
Age of onset
Neonatal
Status
active

Encephalopathy-hypertrophic cardiomyopathy-renal tubular disease syndrome is a rare mitochondrial disease due to a defect in coenzyme Q10 biosynthesis that manifests with a broad spectrum of signs and symptoms which may include: neonatal lactic acidosis, global developmental delay, tonus disorder, seizures, reduced spontaneous movements, ventricular hypertrophy, bradycardia, renal tubular dysfunction with massive lactic acid excretion in urine, severe biochemical defect of respiratory chain complexes II/III when assayed together and deficiency of coenzyme Q10 in skeletal muscle. Cerebral and cerebellar atrophy can be seen on magnetic resonance imaging and multiple choroid plexus cysts and symmetrical hyperechoic signal alterations in basal ganglia have been observed on ultrasound.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enEncephalopathy-hypertrophic cardiomyopathy-renal tubular disease syndrome
frSyndrome d'encéphalopathie-cardiomyopathie hypertrophique-néphropathie tubulaire
deEnzephalopathie mit hypertropher Kardiomyopathie und renal-tubulärer Störung
esSíndrome de encefalopatía-miocardiopatía hipertrófica-enfermedad tubular renal
itEncefalopatia - cardiomiopatia ipertrofica - malattia tubulare renale
nlEncefalopathie - hypertrofische cardiomyopathie - tubulaire nierziekte-syndroom
ptSíndrome de encefalopatia-miocardiopatia hipertrófica-doença tubular renal
plEncefalopatia - kardiomiopatia przerostowa - choroba kanalików nerkowych
csSyndrom zahrnující encefalopatii, hypertrofickou kardiomyopatii a renální tubulární nemoc
ukСиндром енцефалопатії-гіпертрофічної кардіоміопатії-ниркової недостатності
zh脑病-肥厚型心肌病-肾小管疾病综合征
trEnsefalopati-hipertrofik kardiyomiyopati-renal tübüler hastalık sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM614654BTNTvalidated
OMIM616733BTNTvalidated
ICD-10E88.8NTBTattributedvalidated
ICD-115C53.22NTBTattributedvalidated
MONDO0013840Evalidated
UMLSC4706367Evalidated

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 (2):

No children.

4

Genes

2 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
COQ7Disease-causing germline mutation(s) (loss of function) inAssessedHGNC:2244ENSG0000016718660168316p12.3coenzyme Q7, hydroxylase31240163[PMID]_28409910[PMID]_26084283[PMID]
COQ9Disease-causing germline mutation(s) inAssessedHGNC:25302ENSG0000008868261283716q21coenzyme Q919375058[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families1 casesWorldwideCase(s)Validated11562630[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_11562630[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

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

7

Sources for this card