raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:1561

Fatal infantile cytochrome C oxidase deficiency

Synonyms: Fatal infantile COX deficiency · Fatal infantile cardioencephalomyopathy due to cytochrome C oxidase deficiency

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

Fatal infantile cytochrome C oxidase deficiency is a very rare mitochondrial disease characterized clinically by cardioencephalomyopathy resulting in death in infancy.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enFatal infantile cytochrome C oxidase deficiencyFatal infantile COX deficiency · Fatal infantile cardioencephalomyopathy due to cytochrome C oxidase deficiency
frDéficit en cytochrome C oxydase fatal infantileCardio-encéphalo-myopathie fatale infantile par déficit en cytochrome oxydase C · Déficit en COX fatal infantile
deCytochrom-c-Oxidase-Mangel, infantile fatale FormCOX-Mangel, infantiler fataler · Fatale infantile Kardioenzephalomyopathie durch Cytochrom-c-Oxidase-Mangel
esDeficiencia de citocromo C oxidasa fatal del lactanteCardioencefalomiopatía fatal del lactante por deficiencia de citocromo C oxidasa · Deficiencia de COX fatal del lactante
itDeficit di citocromo C ossidasi, infantile letaleCardioencefalomiopatia infantile letale da deficit di citocromo C ossidasi · Deficit di COX, infantile letale
nlFatale infantiele deficiëntie van cytochroom C-oxidaseFatale infantiele COX-deficiëntie · Fatale infantiele cardio-encefalomyopathie door deficiëntie van cytochroom C-oxidase
ptDeficiência de citocromo C oxidase fatal da infânciaCardio-encéfalo-miopatia por deficiência de citocromo C oxidase fatal · Deficiência de COX fatal da infância
plDziecięcy Niedobór oksydazy cytochromu CŚmiertelna dziecięca kardioencefalomiopatia z powodu niedoboru oksydazy cytochromu c · Śmiertelny dziecięcy Niedobór COX
csFatální infantilní deficit cytochrom C oxidázyFatální infantilní deficit COX · Fatální infantilní kardioencefalomyopatie způsobená deficitem cytochrom C oxidázy
ukФатальний дефіцит цитохрому С оксидази у новонародженихФатальна дитяча кардіоенцефаломіопатія внаслідок дефіциту цитохрому С оксидази · Фатальний дефіцит COX у новонароджених
zh致死性婴儿细胞色素C氧化酶缺乏症细胞色素C氧化酶缺乏所致致死性婴儿心脑肌病
trÖlümcül infantil sitokrom C oksidaz eksikliğiLetal infantil COX eksikliği · Sitokrom C oksidaz eksikliğine bağlı letal infantil kardiyoensefalomiyopati

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM604377BTNTvalidated
OMIM615119BTNTvalidated
OMIM616500BTNTvalidated
OMIM616501BTNTvalidated
ICD-10G71.3NTBTattributedvalidated
ICD-118C73.YNTBTindexvalidated
MONDO0015487Evalidated
MONDO15487Evalidated
UMLSC4273730Evalidated

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 (3):

No children.

4

Genes

5 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
COA5Disease-causing germline mutation(s) inAssessedHGNC:33848ENSG000001835136139202q11.2cytochrome c oxidase assembly factor 521457908[PMID]
COA6Disease-causing germline mutation(s) inAssessedHGNC:18025ENSG000001682756147721q42.2cytochrome c oxidase assembly factor 624549041[PMID]_25339201[PMID]
COX15Disease-causing germline mutation(s) inAssessedHGNC:2263ENSG0000001491960364610q24.2cytochrome c oxidase assembly factor COX152175025[PMID]_21412973[PMID]
SCO1Disease-causing germline mutation(s) inAssessedHGNC:10603ENSG0000013302860364417p13.1synthesis of cytochrome C oxidase 111013136[PMID]_19295170[PMID]_23878101[PMID]
SCO2Disease-causing germline mutation(s) inAssessedHGNC:10604ENSG0000028419460427222q13.33synthesis of cytochrome C oxidase 210545952[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families16 casesWorldwideCase(s)Validated2175025[PMID]_15235026[PMID]_15863660[PMID]_21412973[PMID]_21457908[PMID]_26160915[PMID]_25339201[PMID]_10545952[PMID]_10749987[PMID]_18924171[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidated2175025[PMID]_15235026[PMID]_15863660[PMID]_21412973[PMID]_21457908[PMID]_26160915[PMID]_25339201[PMID]_10545952[PMID]_10749987[PMID]_18924171[PMID]_ORPHANET

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