raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:538931

X-linked lymphoproliferative disease due to SAP deficiency

Synonyms: X-linked lymphoproliferative disease due to Signaling lymphocyte activation molecule-associated protein deficiency · X-linked lymphoproliferative syndrome type 1 · XLP1 · X-linked lymphoproliferative disease due to SH2 domain containing 1A protein deficiency · X-linked lymphoproliferative disease due to SH2D1A deficiency

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

A rare, genetic, primary immunodeficiency disorder characterized by an abnormal immune response to Epstein-Barr virus (EBV) infection, caused by hemizygous mutations in the X-linked <i>SH2D1A</i> gene, resulting in B cell lymphoproliferation and manifesting with various phenotypes which include EBV-driven severe or fulminant mononucleosis, hemophagocytic lymphohistiocytosis (presenting with fulminant hepatitis, hepatic necrosis, bone marrow hypoplasia, and neurological involvement), hypogammaglobulinemia, and B-cell lymphoma. Additional variable manifestations include vasculitis, lymphomatoid granulomatosis, aplastic anemia, and chronic gastritis. Occasionally, T-cell lymphoma may be observed. Laboratory findings include normal or increased activated T cells and reduced memory B cells.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enX-linked lymphoproliferative disease due to SAP deficiencyX-linked lymphoproliferative disease due to Signaling lymphocyte activation molecule-associated protein deficiency · X-linked lymphoproliferative syndrome type 1 · XLP1 · X-linked lymphoproliferative disease due to SH2 domain containing 1A protein deficiency · X-linked lymphoproliferative disease due to SH2D1A deficiency
frMaladie lymphoproliférative liée à l'X par déficit en SAPMaladie lymphoproliférative liée à l'X par déficit en SH2D1A · Maladie lymphoproliférative liée à l'X par déficit en protéine SH2 domain containing 1A · Maladie lymphoproliférative liée à l'X par déficit en protéine Signaling lymphocyte activation molecule-associated protein · Maladie lymphoproliférative liée à l'X type 1 · Syndrome lymphoprolifératif lié à l'X type 1 · XLP1
deX-chromosomales lymphoproliferatives Syndrom durch SAP-MangelSAP-Defizienz · X-chromosomale lymphoproliferative Störung durch Defizienz des SLAM-assoziierten Proteins · X-chromosomales lymphoproliferatives Syndrom Typ 1 · X-chromosomales lymphoproliferatives Syndrom durch SH2D1A-Mangel · XLP1
esEnfermedad linfoproliferativa ligada al cromosoma X por deficiencia de SAPEnfermedad linfoproliferativa ligada al cromosoma X por deficiencia de SH2D1A · Enfermedad linfoproliferativa ligada al cromosoma X por deficiencia de la proteína asociada a la molécula linfocitaria activadora de señales · Enfermedad linfoproliferativa ligada al cromosoma X por deficiencia del dominio SH2 que contiene la proteína 1A · Síndrome linfoproliferativo ligado al cromosoma X tipo 1 · XLP1
itMalattia linfoproliferativa legata all'X da deficit di SAPMalattia linfoproliferativa legata all'X da deficit della proteina 1A contenente il dominio SH2 · Malattia linfoproliferativa legata all'X da deficit della proteina associata alla molecola di segnalazione dell'attivazione dei linfociti · Malattia linfoproliferativa legata all'X da deficit di SH2D1A · Malattia linfoproliferativa legata all'X tipo 1 · XLP1
nlX-gebonden lymfoproliferatieve ziekte door SAP-deficiëntieX-gebonden lymfoproliferatief syndroom type 1 · X-gebonden lymfoproliferatieve ziekte door SH2D1A-deficiëntie · X-gebonden lymfoproliferatieve ziekte door deficiëntie van 'SH2 domain containing 1A'-proteïne · X-gebonden lymfoproliferatieve ziekte door deficiëntie van 'Signaling lymphocyte activation molecule'-geassocieerd proteïne · XLP1
ptDoença linfoproliferativa ligada ao X devido a deficiência SAPDoença linfoproliferativa ligada ao X devido a deficiência SH2D1A · Doença linfoproliferativa ligada ao X devido a deficiência XIAP · Doença linfoproliferativa ligada ao X devido a deficiência do domínio SH2 que contem a proteína 1A · Doença linfoproliferativa ligada ao X devido à deficiência de proteína associada à molécula de ativação de linfócitos de sinalização · XLP1
plChoroba limfoproliferacyjna sprzężona z chromosomem X spowodowana niedoborem SAP= en
csX-vázané lymfoproliferativní onemocnění způsobené deficitem SH2D1AXLP1 · SAP deficit · Deficit proteinu související s SH2D1A/SLAM · X-vázaný lymfoproliferativní syndrom, typ 1
ukХ-зчеплене лімфопроліферативне захворювання, зумовлене дефіцитом SAPХ-зчеплене лімфопроліферативне захворювання, зумовлене дефіцитом SH2 домену, що містить білок 1A · Х-зчеплене лімфопроліферативне захворювання, зумовлене дефіцитом SH2D1A · Х-зчеплене лімфопроліферативне захворювання, зумовлене дефіцитом білка, асоційованого з сигнальною молекулою активації лімфоцитів · Х-зчеплений лімфопроліферативний синдром, тип 1 · XLP1
zhSH2D1A基因缺陷诱导的X连锁淋巴组织增生性疾病X连锁淋巴组织增生综合征1型
trSH2D1A eksikliğine bağlı X'e bağlı lenfoproliferatif hastalıkXLP1 · SAP eksikliği · SH2D1A/SLAM ilişkili protein eksikliği · X'e bağlı lenfoproliferatif sendrom tip 1

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM308240Evalidated
ICD-10D82.3NTBTattributedvalidated
ICD-114A01.22NTBTindexvalidated
MONDO0024551Evalidated
UMLSC5399825Evalidated

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

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
SH2D1ADisease-causing germline mutation(s) inAssessedHGNC:10820ENSG00000183918300490Xq25SH2 domain containing 1A20301580[PMID]_28196537[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families100 casesWorldwideCase(s)Validated29942301[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_29942301[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