raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:221120

Pseudoaminopterin syndrome

Synonyms: ASSA · Aminopterin syndrome-like sine aminopterin

Type
Malformation syndrome
Group
Disorder
Age of onset
Antenatal, Neonatal
Status
active

Pseudoaminopterin syndrome is a developmental anomalies syndrome that resembles the aminopterin embryopathy without history of fetal exposure to aminopterin. It is characterized by skull (craniosynostosis and poorly mineralized cranial vault), dysmorphic (ocular hypertelorism, palpebral fissure anomalies, micrognathia cleft lip and/or high arched palate and small and low set/rotated ears) and limb (brachydactyly, syndactyly and clinodactyly) anomalies, associated with mild-to-moderate intellectual deficit and short stature.

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Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enPseudoaminopterin syndromeASSA · Aminopterin syndrome-like sine aminopterin
frSyndrome pseudo-aminoptérine
dePseudoaminopterin-SyndromASSA · Aminopterin-ähnliches Syndrom sine Aminopterin
esSíndrome de pseudoaminopterina
itSindrome da pseudoaminopterinaASSA · Sindrome da pseudoaminopterina senza aminopterina
nlPseudoaminopterinesyndroomASSA · Aminopterinesyndroom-achtig zonder aminopterine
ptSíndrome pseudoaminopterina
plZespół pseudoaminopterynowyASSA · Zespół podobny do zespołu aminopterynowego bez aminopteryny
csPseudoaminopterinový syndromASSA · Syndrom podobný aminopterinovému syndromu, bez expozice aminopterinu
ukПсевдоаміноптериновий синдромАміноптериновий синдром, подібний до синусного аміноптерину · ASSA
zh伪氨基蝶呤综合症氨基蝶呤综合症样氨基喋呤
trPsödoaminopterin sendromuASSA · Aminopterin sendromu-benzeri sinüs aminopterin

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM600325Evalidated
ICD-10Q82.0NTBTattributedvalidated
ICD-11LD24.GYNTBTindexvalidated
MONDO0010865Evalidated
MeSHC535823Evalidated
UMLSC0795939Evalidated
GARD4544Evalidated

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.

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Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families11 casesWorldwideCase(s)Validated22811276[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_22811276[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.

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HPO phenotypes

63 annotations · validated 2019-09-30
HPOTerm (as annotated by Orphanet)Diagnostic
Frequent (79-30%)
HP:0009911Abnormal temporal bone morphology
HP:0040064Abnormality of limbs
HP:0000581Blepharophimosis
HP:0000028Cryptorchidism
HP:0002236Frontal upsweep of hair
HP:0000218High palate
HP:0002553Highly arched eyebrow
HP:0000316Hypertelorism
HP:0001249Intellectual disability
HP:0002996Limited elbow movement
HP:0000347Micrognathia
HP:0010657Patchy reduction of bone mineral density
HP:0000358Posteriorly rotated ears
HP:0000426Prominent nasal bridge
HP:0000520Proptosis
HP:0004322Short stature
HP:0009891Underdeveloped supraorbital ridges
Occasional (29-5%)
HP:0000387Absent earlobe
HP:0001746Asplenia
HP:0001156Brachydactyly
HP:0000337Broad forehead
HP:0040025Clinodactyly of the 4th finger
HP:0001864Clinodactyly of the 5th toe
HP:0100759Clubbing of fingers
HP:0000268Dolichocephaly
HP:0000286Epicanthus
HP:0000324Facial asymmetry
HP:0003473Fatigable weakness
HP:0008947Floppy infant
HP:0002007Frontal bossing
HP:0001263Global developmental delay
HP:0030043Hip subluxation
HP:0000085Horseshoe kidney
HP:0000238Hydrocephalus
HP:0001611Hypernasal speech
HP:0009739Hypoplasia of the antihelix
HP:0000023Inguinal hernia
HP:0003186Inverted nipples
HP:0000256Macrocephaly
HP:0000691Microdontia
HP:0008598Mild conductive hearing impairment
HP:0011470Nasogastric tube feeding in infancy
HP:0000602Ophthalmoplegia
HP:0000202Orofacial cleft
HP:0001845Overlapping toe
HP:0001655Patent foramen ovale
HP:0000767Pectus excavatum
HP:0001763Pes planus
HP:0002033Poor suck
HP:0100259Postaxial polydactyly
HP:0025193Posterolateral diaphragmatic hernia
HP:0000884Prominent sternum
HP:0010767Sacrococcygeal pilonidal abnormality
HP:0004442Sagittal craniosynostosis
HP:0010044Short 4th metacarpal
HP:0000322Short philtrum
HP:0009778Short thumb
HP:0000954Single transverse palmar crease
HP:0001238Slender finger
HP:0002209Sparse scalp hair
HP:0005048Synostosis of carpal bones
HP:0004684Talipes valgus
HP:0006610Wide intermamillary distance

Annotation source: 3621652[PMID]_7888136[PMID]_19938091[PMID]_22811276[PMID]

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Sources for this card