raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:693681

Activated PI3K-delta syndrome 2

Synonyms: APDS type 2 · APDS2 · Activated p110delta syndrome, type 2 · Activated phosphoinositide 3-kinase delta syndrome type 2 · PASLI-R1 · Senescent T-cells-lymphadenopathy-immunodeficiency syndrome due to p110delta-activating mutations, type 2

Type
Disease
Group
Disorder
Inheritance
Autosomal dominant
Status
active

Orphadata ships no English definition for this code.

1

Names in Orphadata languages

9 of 12 languages
LangNameSynonyms
enActivated PI3K-delta syndrome 2APDS type 2 · APDS2 · Activated p110delta syndrome, type 2 · Activated phosphoinositide 3-kinase delta syndrome type 2 · PASLI-R1 · Senescent T-cells-lymphadenopathy-immunodeficiency syndrome due to p110delta-activating mutations, type 2
frSyndrome de PI3K-delta activée 2APDS type 2 · APDS2 · Syndrome de déficit immunitaire-lymphadénopathie et cellules T sénéscentes dus à des mutations activatrices de p110delta type 2
deAktivierte PIK3-Delta-Syndrom 2APDS Typ 2 · APDS2 · Aktivierte Phosphoinositid-3-Kinase-delta-Syndrom Typ 2 · PASLI-R1 · Seneszente T-Zellen-Lymphadenopathie-Immundefektsyndrom durch p110delta-aktivierende Mutationen vom Typ 2
esSíndrome de PIK3-delta activada 2APDS tipo 2 · APDS2 · PASLI-R1 · Síndrome de células T senescentes-linfadenopatía-inmunodeficiencia por mutaciones activadoras en p110delta, tipo 2 · Síndrome de fosfoinosítido 3-quinasa delta activada 2 · Síndrome de p110delta activada tipo 2
itSindrome da attivazione di PI3K-delta 2APDS · APDS tipo 2 · APDS2 · Sindrome da attivazione di fosfoinositide 3-chinasi delta tipo 2 · PASLI-R1 · Sindrome cellule T senescenti-linfoadenopatia-immunodeficienza da mutazioni attivanti p110delta, tipo 2
nlGeactiveerd PIK3-delta-syndroom 2APDS type 2 · APDS2 · Geactiveerd fosfoinositide 3-kinase delta-syndroom type 2 · Geactiveerd p110delta-syndroom, type 2 · PASLI-R1 · Senescente T-cellen - lymfadenopathie - immuundeficiëntie-syndroom door p110delta-activerende mutaties, type 2
ptSíndrome 2 de PIK3-delta activadoAPDS tipo 2 · APDS2 · PASLI-R1 · Síndrome de células T senescentes-linfadenopatia-imunodeficiência devido a mutações ativadoras de p110delta, tipo 2 · Síndrome de fosfoinositídeo 3-quinase delta ativada tipo 2 · Síndrome p110delta activado, tipo 2
plZespół aktywacji PI3K-delta typu 2= en
csActivated PI3K-delta syndrome 2= en
2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM616005Evalidated
ICD-10D81.8NTBTattributedvalidated
ICD-114A01.0YNTBTattributedvalidated

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
PIK3R1Disease-causing germline mutation(s) (gain of function) inAssessedHGNC:8979ENSG000001456751718335q13.1phosphoinositide-3-kinase regulatory subunit 125133428[PMID]
5

Prevalence and incidence

0 records

No prevalence record in this release.

6

HPO phenotypes

21 annotations · validated 2025-03-19
HPOTerm (as annotated by Orphanet)Diagnostic
Frequent (79-30%)
HP:0002110Bronchiectasis
HP:0005387Combined immunodeficiency
HP:0002720Decreased circulating IgA level
HP:0008348Decreased circulating IgG2 level
HP:0010976Decreased total B cell count
HP:0001508Failure to thrive
HP:0001263Global developmental delay
HP:0011956Intestinal lymphoid nodular hyperplasia
HP:0002716Lymphadenopathy
HP:0002205Recurrent respiratory infections
HP:0004322Short stature
HP:0001744Splenomegaly
Occasional (29-5%)
HP:0002960Autoimmunity
HP:0032204Chronic active Epstein-Barr virus infection
HP:0005411Chronic intestinal candidiasis
HP:0000509Conjunctivitis
HP:0002014Diarrhea
HP:0002240Hepatomegaly
HP:0002024Malabsorption
HP:0032163Molluscum contagiosum
HP:0032247Persistent CMV viremia

Annotation source: 34249806[PMID]_34422726[PMID]_27116393[PMID]

7

Sources for this card