raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:43

X-linked adrenoleukodystrophy

Synonyms: ALD · X-ALD · X-linked ALD

Type
Disease
Group
Disorder
Inheritance
X-linked dominant
Age of onset
Adolescent, Adult, Childhood, Elderly
Status
active

A rare progressive peroxisomal disorder characterized by endocrine dysfunction (adrenal failure and sometimes testicular insufficiency), progressive myelopathy, peripheral neuropathy and, variably, progressive leukodystrophy.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enX-linked adrenoleukodystrophyALD · X-ALD · X-linked ALD
frAdrénoleucodystrophie liée à l'XALD · ALD liée à l'X · X-ALD
deAdrenoleukodystrophie, X-chromosomaleX-ALD · ALD · ALD, X-chromosomale
esAdrenoleucodistrofia ligada al cromosoma XALD · ALD ligada al cromosoma X · X-ALD
itAdrenoleucodistrofia legata all'XALD · ALD legata all'X · X-ALD
nlX-gebonden adrenoleukodystrofieALD · X-ALD · X-gebonden ALD
ptAdrenoleucodistrofia ligada ao XALD · ALD ligada ao X · X-ALD
plAdrenoleukodystrofia sprzężona z chromosomem XALD · ALD sprzężona z chromosomem X · X-ALD
csX-vázaná adrenoleukodystrofieALD · X-ALD · X-vázaná ALD
ukХ-зчеплена адренолейкодистрофіяALD · X-ALD · Х-зчеплений АЛД
zhX连锁肾上腺脑白质营养不良X连锁肾上腺脑白质营养不良
trX'e bağlı adrenolökodistrofiALD · X-ALD · X-ilişkili ALD

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM300100Evalidated
OMIM302700BTNTvalidated
ICD-10E71.3NTBTinclusionvalidated
ICD-115C57.1NTBTindexvalidated
MeSHD000326Evalidated
UMLSC0162309Evalidated
GARD5758Evalidated
MedDRA10051260Evalidated

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):

Children (2):

4

Genes

0 direct · 2 via subtypes

Orphanet records no gene directly on this code.

Recorded by Orphanet on subtypes of this disorder:

GeneSubtypeAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
ABCD1ORPHA:139396X-linked cerebral adrenoleukodystrophyDisease-causing germline mutation(s) inAssessedHGNC:61ENSG00000101986300371Xq28ATP binding cassette subfamily D member 120301491[PMID]
ABCD1ORPHA:139399AdrenomyeloneuropathyDisease-causing germline mutation(s) inAssessedHGNC:61ENSG00000101986300371Xq28ATP binding cassette subfamily D member 120301491[PMID]
5

Prevalence and incidence

3 records
TypeClassValueAreaQualificationValidationSource
Point prevalence1-9 / 1 000 0000.8 / 100 000NorwayValue and classValidated23419472[PMID]
Prevalence at birth1-5 / 10 0002.0639 / 100 000United StatesValue and classValidated31074578[PMID]
Prevalence at birth1-9 / 1 000 0000.8 / 100 000IsraelValue and classValidated33239050[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

36 annotations · validated 2017-04-04
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0001939Abnormality of metabolism/homeostasis
HP:0000504Abnormality of vision
HP:0007018Attention deficit hyperactivity disorderDiagnostic criterion
HP:0000708Atypical behavior
HP:0002312Clumsiness
HP:0100543Cognitive impairment
HP:0000726Dementia
HP:0004302Functional motor deficit
HP:0001288Gait disturbance
HP:0002315Headache
HP:0000752Hyperactivity
HP:0002311Incoordination
HP:0001249Intellectual disability
HP:0008969Leg muscle stiffness
HP:0002385Paraparesis
HP:0001730Progressive hearing impairment
HP:0007199Progressive spastic paraparesis
HP:0003474Somatic sensory dysfunction
HP:0001328Specific learning disability
HP:0000505Visual impairment
HP:0000572Visual loss
Frequent (79-30%)
HP:0011733Abnormality of adrenal physiology
HP:0000846Adrenal insufficiency
HP:0000718Aggressive behavior
HP:0002381Aphasia
HP:0000734Disinhibition
HP:0001269Hemiparesis
HP:0008768Inappropriate sexual behavior
HP:0003154Increased circulating ACTH level
HP:0002516Increased intracranial pressure
HP:0000011Neurogenic bladder
HP:0002839Urinary bladder sphincter dysfunction
HP:0001123Visual field defect
Occasional (29-5%)
HP:0000651Diplopia
HP:0000802Impotence
HP:0003470Paralysis

Run the differential on the 12 obligate / very frequent terms

Annotation source: 20301491[PMID]

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Sources for this card