raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:247698

Multiple endocrine neoplasia type 2A

Synonyms: MEN2A · PTC syndrome · Sipple syndrome

Type
Clinical subtype
Group
Subtype of disorder
Inheritance
Autosomal dominant
Age of onset
Childhood
Status
active

A form of multiple endocrine neoplasia type 2 (MEN2) syndrome characterized by medullary thyroid carcinoma in association with pheochromocytoma (one or both adrenal glands can be affected) and/or primary hyperparathyroidism (caused by parathyroid adenoma). Onset is typically later than in MEN2B, before 35 years of age. Diarrhea is the most frequent systemic symptom. Patients can develop Hirschsprung disease and, less frequently, cutaneous lichen amyloidosis or excessive production of adrenocorticotropic hormone.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enMultiple endocrine neoplasia type 2AMEN2A · PTC syndrome · Sipple syndrome
frNéoplasie endocrinienne multiple type 2AMEN2A · Syndrome PTC · Syndrome de Sipple
deMultiple endokrine Neoplasie Typ 2AMEN2A · PTC-Syndrom · Sipple-Syndrom
esNeoplasia endocrina múltiple tipo 2AMEN2A · NEM2A · Síndrome PTC · Síndrome de Sipple
itNeoplasia endocrina multipla, tipo 2AMEN2A · Sindrome PTC · Sindrome di Sipple
nlMultipele endocriene neoplasie type 2AMEN2A · PTC-syndroom · Syndroom van Sipple
ptNeoplasia endócrina múltipla, tipo 2A
plZespół gruczolakowatości wewnątrzwydzielniczej typu 2AMEN2A · Zespół PTC · Zespół Sipple'a
csMnohočetná endokrinní neoplázie, typ 2AMEN-2A · PTC syndrom · Sippleův syndrom
ukМножинна ендокринна неоплазія, тип 2АMEN2A · Синдром PTC · Симптом Сіппла
zh多发性内分泌肿瘤2A型Sipple综合征
trÇoklu endokrin neoplazi tip 2AMEN2A · PTC sendromu · Sipple sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM171400Evalidated
ICD-10D44.8NTBTattributedvalidated
ICD-112F7A.0NTBTindexvalidated
MONDO0008234Evalidated
MeSHD018813Evalidated
UMLSC0025268Evalidated
GARD4881Evalidated
MedDRA10073148Evalidated

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 (2):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
RETDisease-causing germline mutation(s) inAssessedHGNC:9967ENSG0000016573116476110q11.21ret proto-oncogene20833330[PMID]_20301434[PMID]
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Prevalence and incidence

0 records

No prevalence record in this release.

6

HPO phenotypes

Orphanet has no HPO annotation for this code in this release.

7

Sources for this card