raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:33355

Reticular dysgenesis

Synonyms: AK2 deficiency · De Vaal disease · SCID with sensorineural deafness · SCID with sensorineural hearing loss · Severe combined immunodeficiency with sensorineural deafness · Severe combined immunodeficiency with sensorineural hearing loss

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

Reticular dysgenesis is the most severe form of severe combined immunodeficiency (SCID) and is characterized by bilateral sensorineural deafness and a lack of innate and adaptive immune functions leading to fatal septicemia within days after birth if not treated.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enReticular dysgenesisAK2 deficiency · De Vaal disease · SCID with sensorineural deafness · SCID with sensorineural hearing loss · Severe combined immunodeficiency with sensorineural deafness · Severe combined immunodeficiency with sensorineural hearing loss
frDysgénésie réticulaireDISC avec surdité · Déficit en AK2 · Déficit immunitaire combiné sévère avec surdité · Immunodéficience combinée sévère avec surdité · Maladie de De Vaal · SCID avec surdité
deRetikuläre DysgenesieAK2-Mangel · Adenylatkinase 2-Defizienz · De Vaal-Krankheit · SCID mit sensorineuralem Hörverlust · Schwerer kombinierter Immundefekt mit sensorineuraler Schwerhörigkeit
esDisgenesia reticularDeficiencia de AK2 · Enfermedad de De Vaal · IDCG con hipoacusia neurosensorial · IDCG con sordera neurosensorial · Inmunodeficiencia combinada grave con hipoacusia neurosensorial · Inmunodeficiencia combinada grave con sordera neurosensorial · SCID con hipoacusia neurosensorial · SCID con sordera neurosensorial
itDisgenesia reticolareSCID con sordità neurosensoriale · SCID con perdita dell'udito neurosensoriale · Deficit di AK2 · Immunodeficienza combinata grave con sordità neurosensoriale · Immunodeficienza combinata grave con perdita dell'udito neurosensoriale · Malattia di De Vaal
nlReticulaire dysgenesieAK2-deficiëntie · Ernstige gecombineerde immuundeficiëntie met sensorineuraal gehoorverlies · Ernstige gecombineerde immuundeficiëntie met sensorineurale doofheid · SCID met sensorineuraal gehoorverlies · SCID met sensorineurale doofheid · Ziekte van De Vaal
ptDisgenesia reticularAleucocitose congénita · Doença de De Vaal · Hipoplasia hematopoiética generalizada · Imunodeficiência combinada grave com leucopenia
plDysgenezja siateczkiChoroba De Vaala · Ciężki złożony Niedobór odporności z leukopenią · Niedobór AK2 · SCID z leukopenią · Uogólniona hipoplazja hematopoetyczna · Wrodzona aleukocytoza
csRetikulární dysgenezeDeficit AK2 · Vrozená aleukocytóza · De Vaalova choroba · Generalizovaná hematopoetická hypoplázie · SCID s leukopenií · Těžká kombinovaná imunodeficience s leukopenií
ukДисгенезія сітківкиДефіцит АК2 · Вроджений алейкоцитоз · Хвороба де Ваала · Генералізована гіпоплазія кровотворних органів · ТКІД з лейкопенією · Тяжкий комбінований імунодефіцит з лейкопенією
zh网状组织发育不全严重联合免疫缺陷病伴白细胞减少
trRetiküler disgeneziAK2 eksikliği · De Vaal hastalığı · Lökopeni ile seyreden SCID · Doğumsal alökositoz · Jeneralize hematopoetik hipoplazi · Lökopeni ile seyreden ağır kombine immün yetmezlik

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM267500Evalidated
ICD-10D81.0Especificvalidated
ICD-114A01.10NTBTindexvalidated
MONDO0009973Evalidated
MeSHC538361Evalidated
UMLSC0272167Evalidated
GARD8625Evalidated

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
AK2Disease-causing germline mutation(s) (loss of function) inAssessedHGNC:362ENSG000000044551030201p35.1adenylate kinase 219043416[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Annual incidence<1 / 1 000 0000.03 / 100 000EuropeValue and classValidated[EXPERT]
Point prevalence<1 / 1 000 000—EuropeClass onlyNot yet validatedORPHANET

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

20 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0003287Abnormality of mitochondrial metabolism
HP:0001874Abnormality of neutrophils
HP:0001903Anemia
HP:0010515Aplasia/Hypoplasia of the thymus
HP:0005374Cellular immunodeficiency
HP:0000389Chronic otitis media
HP:0004313Decreased circulating antibody level
HP:0002014Diarrhea
HP:0000365Hearing impairment
HP:0001882Leukopenia
HP:0002205Recurrent respiratory infections
HP:0100806Sepsis
HP:0004430Severe combined immunodeficiency
Frequent (79-30%)
HP:0001508Failure to thrive
HP:0001945Fever
HP:0002024Malabsorption
HP:0001824Weight loss
Occasional (29-5%)
HP:0001944Dehydration
HP:0000988Skin rash
HP:0200042Skin ulcer

Run the differential on the 12 obligate / very frequent terms

7

Sources for this card