raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:487825

Pierpont syndrome

Synonyms: Plantar lipomatosis-facial dysmorphism-developmental delay syndrome · Plantar lipomatosis-unusual facies-developmental delay syndrome

Type
Malformation syndrome
Group
Disorder
Inheritance
Autosomal dominant
Age of onset
Infancy, Neonatal
Status
active

A rare multiple congenital anomalies/dysmorphic syndrome characterized by axial hypotonia after birth, prolonged feeding difficulties, moderate to severe global developmental delay, seizures (in particular absence seizures), fetal digital pads, distinctive plantar fat pads anteromedial to the heels, and deep palmar and plantar grooves. Over time, fat pads may become less prominent and disappear. Distinct craniofacial dysmorphic features include a broad face with high forehead, high anterior hairline, narrow palpebral fissures that take on a crescent moon shape when smiling, broad nasal bridge and tip with anteverted nostrils, mild midfacial hypoplasia, long, smooth philtrum, thin upper lip vermillion, small, widely spaced teeth, and flat occiput/microcephaly/brachycephaly.

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Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enPierpont syndromePlantar lipomatosis-facial dysmorphism-developmental delay syndrome · Plantar lipomatosis-unusual facies-developmental delay syndrome
frSyndrome de PierpontSyndrome de lipomatose plantaire-dysmorphie faciale-retard de développement
dePierpont-SyndromPlantare Lipomatose-Gesichtsdysmorphien-Entwicklungsverzögerung-Syndrom · Plantare Lipomatose-ungewöhnliche Gesichtszüge-Entwicklungsverzögerung-Syndrom
esSíndrome de PierpontSíndrome de lipomatosis plantar-dismorfia facial-retraso del desarrollo · Síndrome de lipomatosis plantar-facies inusual-retraso del desarrollo
itSindrome di Pierpont
nlSyndroom van PierpontPlantaire lipomatose - faciale dysmorfie - ontwikkelingsachterstand-syndroom · Plantaire lipomatose - ongewoon gelaat - ontwikkelingsachterstand-syndroom
ptSíndrome de Pierpont
plZespół PierpontZespół tłuszczkowatości podeszew stóp, niezwykłej twarzy i opóźnionego rozwoju · Zespół tłuszczkowatości podeszew stóp, dysmorfii twarzy i opóźnionego rozwoju
csPierpontové syndromSyndrom zahrnující plantární lipomatózu, neobvyklou tvář a opoždění vývoje · Syndrom zahrnující plantární lipomatózu, faciální dysmorfismus a opoždění vývoje
ukСиндром ПєрпонаСиндром підошовного ліпоматозу-лицевого дизморфізму- затримки розвитку · Синдром підошовного ліпоматозу - незвичайного обличчя - затримки розвитку
zh皮尔庞特综合征足底脂肪瘤样病-面部畸形-发育迟缓综合征
trPierpont sendromuPlantar lipomatozis-alışılmadık yüz-gelişme geriliği sendromu · Plantar lipomatoz-fasiyal dismorfizm-gelişme geriliği sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM602342Evalidated
ICD-10Q87.8NTBTattributedvalidated
MONDO0011213Evalidated
MeSHC566559Evalidated
UMLSC1865644Evalidated

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
TBL1XR1Disease-causing germline mutation(s) inAssessedHGNC:29529ENSG000001775656086283q26.32TBL1X/Y related 126769062[PMID]_28562391[PMId]_21834056[PMID]
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Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families7 casesWorldwideCase(s)Validated28562391[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_28562391[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

48 annotations · validated 2020-01-10
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0007552Abnormal subcutaneous fat tissue distribution
HP:0006191Deep palmar crease
HP:0000232Everted lower lip vermilion
HP:0001252Hypotonia
HP:0001249Intellectual disability
HP:0045025Narrow palpebral fissure
HP:0001763Pes planus
HP:0000470Short neck
HP:0012811Wide nasal ridge
HP:0000687Widely spaced teeth
Frequent (79-30%)
HP:0100872Abnormality of the plantar skin of foot
HP:0007367Atrophy/Degeneration affecting the central nervous system
HP:0000248Brachycephaly
HP:0410263Brain imaging abnormality
HP:0000289Broad philtrum
HP:0000490Deeply set eye
HP:0007605Excessive wrinkling of palmar skin
HP:0000365Hearing impairment
HP:0000348High forehead
HP:0000316Hypertelorism
HP:0011341Long upper lip
HP:0000358Posteriorly rotated ears
HP:0011451Primary microcephaly
HP:0001212Prominent fingertip pads
HP:0002650Scoliosis
HP:0009381Short finger
HP:0001831Short toe
HP:0001518Small for gestational age
HP:0000319Smooth philtrum
HP:0000486Strabismus
HP:0000506Telecanthus
HP:0000233Thin vermilion border
HP:0009909Uplifted earlobe
HP:0006610Wide intermamillary distance
Occasional (29-5%)
HP:0002536Abnormal cortical gyration
HP:0001344Absent speech
HP:0002308Chiari malformation
HP:0000028Cryptorchidism
HP:0009890High anterior hairline
HP:0001382Joint hypermobility
HP:0000400Macrotia
HP:0000272Malar flattening
HP:0000482Microcornea
HP:0000568Microphthalmia
HP:0012043Pendular nystagmus
HP:0011344Severe global developmental delay
HP:0000219Thin upper lip vermilion
HP:0002119Ventriculomegaly

Run the differential on the 10 obligate / very frequent terms

Annotation source: 21834056[PMID]_26769062[PMID]_28562391[PMID]_30365874[PMID]

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Sources for this card