raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:652

Multiple endocrine neoplasia type 1

Synonyms: MEN1 · Wermer syndrome

Type
Disease
Group
Disorder
Inheritance
Autosomal dominant, Not applicable
Age of onset
All ages
Status
active

A rare inherited cancer syndrome, characterized by the development of multiple neuroendocrine tumors of the parathyroids, gastro-entero-pancreatic tract, and anterior pituitary gland, and less commonly the adrenal cortical gland, thymus and bronchi, with other non-endocrine tumors in some patients.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enMultiple endocrine neoplasia type 1MEN1 · Wermer syndrome
frNéoplasie endocrinienne multiple type 1NEM1 · Syndrome de Wermer
deNeoplasie, endokrine multiple, Typ 1MEN 1 · Wermer-Syndrom
esNeoplasia endocrina múltiple tipo 1
itNeoplasia endocrina multipla tipo 1MEN 1 · Sindrome di Wermer
nlMultipele endocriene neoplasie type 1MEN1 · Syndroom van Wermer
ptNeoplasias endócrinas múltiplas tipo 1MEN 1 · Síndrome Wermer
plZespół mnogiej gruczolakowatości wewnątrzwydzielniczej typu 1MEN 1 · Zespół Wermera
csSyndrom mnohočetné endokrinní neoplázie, typ 1MEN1 · Wermerův syndrom
ukМножинні ендокринні неоплазії, тип 1MEN1 · Синдром Вермера
zh多发性内分泌瘤病1型Wermer综合征
trÇoklu endokrin neoplazi tip-IMEN1 · Wermer sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM131100Evalidated
ICD-10D44.8NTBTattributedvalidated
ICD-112F7A.0NTBTindexvalidated
MONDO0007540Evalidated
MeSHD018761Evalidated
UMLSC0025267Evalidated
GARD3829Evalidated
MedDRA10073150Evalidated

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 (5):

No children.

4

Genes

3 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
CDKN1BCandidate gene tested inNot yet assessedHGNC:1785ENSG0000011127660077812p13.1cyclin dependent kinase inhibitor 1B22026581[PMID]_25824098[PMID]
CDKN2BCandidate gene tested inNot yet assessedHGNC:1788ENSG000001478836004319p21.3cyclin dependent kinase inhibitor 2B19141585[PMID]
MEN1Disease-causing germline mutation(s) inAssessedHGNC:7010ENSG0000013389561373311q13.1menin 120301710[PMID]
5

Prevalence and incidence

1 record
TypeClassValueAreaQualificationValidationSource
Point prevalence1-9 / 100 0003.3 / 100 000EuropeValue and classValidated20301710[PMID]_17014705[PMID]_ [EXPERT]

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

74 annotations · validated 2020-03-16
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0010615Angiofibromas
HP:0003072Hypercalcemia
HP:0031058Impairment of activities of daily living
HP:0008208Parathyroid hyperplasia
HP:0008200Primary hyperparathyroidism
Frequent (79-30%)
HP:0002027Abdominal pain
HP:0000849Adrenocortical abnormality
HP:0040306Decreased male libido
HP:0002014Diarrhea
HP:0100829Galactorrhea
HP:0002020Gastroesophageal reflux
HP:0002150Hypercalciuria
HP:0500167Hypergastrinemia
HP:0000802Impotence
HP:0005605Large cafe-au-lait macules with irregular margins
HP:0001012Multiple lipomas
HP:0002894Neoplasm of the pancreas
HP:0004398Peptic ulcer
HP:0002893Pituitary adenoma
HP:0006767Pituitary prolactin cell adenoma
HP:0004349Reduced bone mineral density
HP:0001824Weight loss
HP:0002044Zollinger-Ellison syndrome
Occasional (29-5%)
HP:0040085Abnormal circulating aldosterone
HP:0006744Adrenocortical carcinoma
HP:0000141Amenorrhea
HP:0002039Anorexia
HP:0100570Carcinoid tumor
HP:0007449Confetti-like hypopigmented macules
HP:0001289Confusion
HP:0002019Constipation
HP:0001293Cranial nerve compression
HP:0032044Decreased vigilance
HP:0001944Dehydration
HP:0000716Depression
HP:0002588Duodenal ulcer
HP:0000845Elevated circulating growth hormone concentration
HP:0000169Gingival fibromatosis
HP:0000853Goiter
HP:0002315Headache
HP:0002248Hematemesis
HP:0000822Hypertension
HP:0003118Increased circulating cortisol level
HP:0002659Increased susceptibility to fractures
HP:0012197Insulinoma
HP:0006723Intestinal carcinoid
HP:0001254Lethargy
HP:0002249Melena
HP:0002858Meningioma
HP:0002018Nausea
HP:0000787Nephrolithiasis
HP:0002797Osteolysis
HP:0030405Pancreatic endocrine tumor
HP:0011760Pituitary growth hormone cell adenoma
HP:0001579Primary hypercortisolism
HP:0011407Proportionate tall stature
HP:0000736Short attention span
HP:0012232Shortened QT interval
HP:0002890Thyroid carcinoma
HP:0002013Vomiting
Very rare (<4-1%)
HP:0001259Coma
HP:0003528Elevated calcitonin
HP:0002888Ependymoma
HP:0030404Glucagonoma
HP:0003144Increased serum serotonin
HP:0011151Obtundation status
HP:0006780Parathyroid carcinoma
HP:0002666Pheochromocytoma
HP:0008291Pituitary corticotropic cell adenoma
HP:0011759Pituitary gonadotropic cell adenoma
HP:0011761Pituitary null cell adenoma
HP:0011762Pituitary thyrotropic cell adenoma
HP:0030445Pulmonary carcinoid tumor
HP:0100522Thymoma

Run the differential on the 5 obligate / very frequent terms

Annotation source: 20301710[PMID]

7

Sources for this card