raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:1923

Methimazole embryofetopathy

Synonyms: MMI/CMZ embryofetopathy · MMI/CMZ embryopathy · Methimazole/carbimazole embryofetopathy · Methimazole/carbimazole embryopathy

Type
Malformation syndrome
Group
Disorder
Inheritance
Not applicable
Age of onset
Antenatal, Neonatal
Status
active

A teratogenic embryofetopathy that results from maternal exposition to methimazole (MMI; or the parent compound carbimazole) in the first trimester of pregnancy. MMI is an antithyroid thionamide drug used for the treatment of Graves' disease. In the infant, MMI may result in choanal atresia, esophageal atresia, omphalocele, omphalomesenteric duct anomalies, congenital heart disease (such as ventricular septal defect), renal system malformations and aplasia cutis. Additional features that may be observed include facial dysmorphism (short upslanting palpebral fissures, a broad nasal bridge with a small nose and a broad forehead) and athelia/hypothelia.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enMethimazole embryofetopathyMMI/CMZ embryofetopathy · MMI/CMZ embryopathy · Methimazole/carbimazole embryofetopathy · Methimazole/carbimazole embryopathy
frEmbryofoetopathie au méthimazoleEmbryofoetopathie au MMI/CMZ · Embryofoetopathie au méthimazole/carbimazole · Embryopathie au MMI/CMZ · Embryopathie au méthimazole/carbimazole · Exposition anténatale au MMI/CMZ · Exposition anténatale au méthimazole/carbimazole
deMethimazol-EmbryofetopathieCarbimazol-Embryofetopathie · MMI/CMZ-Embryofetopathie · MMI/CMZ-Embryopathie · Methimazol/Carbimazol-Embryofetopathie · Methimazol/Carbimazol-Embryopathie
esEmbriofetopatía por metimazolEmbriofetopatía MMI/CMZ · Embriofetopatía por metimazol/carbimazol · Embriopatía MMI/CMZ · Embriopatía por metimazol/carbimazol
itEmbrio/fetopatia da metimazoloEmbriofetopatia da carbimazolo
nlMethimazol-embryofoetopathieMMI/CMZ-embryofoetopathie · MMI/CMZ-embryopathie · Methimazol/carbimazol-embryofoetopathie · Methimazol/carbimazol-embryopathie
ptEmbriofetopatia por metimazol
plEmbriofetopatia metimazolowaEmbriopatia metimazolowa/karbamizolowa · Embriofetopatia metimazolowa/karbamizolowa
csMethimazolová embryopatieKarbimazolová embryopatie
ukМетимазолова ембріофетопатіяМетимазолова/карбімазолова ембріофетопатія · Метимазолова/карбімазолова ембріопатія · Ембріофетопатія MMI/CMZ · Ембріопатія MMI/CMZ
zh甲巯咪唑胚胎胎儿病甲巯咪唑/卡比马唑胚胎胎儿病
trMetimazol embriyofetopatisiMMI / CMZ embriyopati · MMI / CMZ embriyofetopati · Metimazol / karbimazol embriyopatisi · Metimazol / karbimazol embriyofetopati

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10Q86.8NTBTattributedvalidated
ICD-11LD2F.0YNTBTindexvalidated
MONDO0016017Evalidated
UMLSC4510379Evalidated
GARD3573Evalidated

E exact · NTBT this ORPHAcode is narrower than the target · BTNT broader than the target · ND not decided.

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Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (2):

No children.

4

Genes

0 direct

Orphanet records no gene directly on this code.

5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families40 casesWorldwideCase(s)ValidatedORPHANET
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET

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

13 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0002032Esophageal atresia
HP:0000821Hypothyroidism
HP:0001511Intrauterine growth retardation
HP:0001561Polyhydramnios
HP:0002575Tracheoesophageal fistula
Frequent (79-30%)
HP:0001679Abnormal aortic morphology
HP:0000820Abnormality of the thyroid gland
HP:0000453Choanal atresia
HP:0001680Coarctation of aorta
HP:0000047Hypospadias
HP:0001362Skull defect
HP:0100589Urogenital fistula
HP:0001629Ventricular septal defect

Run the differential on the 5 obligate / very frequent terms

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Sources for this card