raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:2891

Pili torti-developmental delay-neurological abnormalities syndrome

Type
Malformation syndrome
Group
Disorder
Age of onset
Infancy
Status
active

Pili torti-developmental delay-neurological abnormalities syndrome is characterized by growth and developmental delay, mild to moderate neurologic abnormalities, and pili torti. It has been described in a brother and his sister born to consanguineous Puerto Rican parents.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enPili torti-developmental delay-neurological abnormalities syndrome
frSyndrome de pili torti-retard de développement-anomalies neurologiques
dePili torti-Entwicklungsverzögerung-neurologische Anomalien-Syndrom
esSíndrome de pili torti-retraso del desarrollo-anomalías neurológicas
itPili torti - ritardo dello sviluppo - anomalie neurologiche
nlPili torti - ontwikkelingsachterstand - neurologische anomalieën-syndroom
ptPili torti-atraso do desenvolvimento-anomalias neurológicas
plWłosy skręcone - opóźnienie w rozwoju - nieprawidłowości neurologiczne
csSyndrom zahrnující pili torti, opoždění vývoje a neurologické abnormality
ukСиндром перекрученого волосся-затримки розвитку-неврологічних порушень
zh卷发-发育迟缓-神经系统异常综合征
trPili torti-gelişme geriliği-nörolojik anormallikler sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM261990Evalidated
ICD-10Q87.8NTBTattributedvalidated
ICD-11EC21.0NTBTattributedvalidated
MONDO0009871Evalidated
MeSHC537398Evalidated
UMLSC4274783Evalidated
GARD4362Evalidated

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 (1):

No children.

4

Genes

0 direct

Orphanet records no gene directly on this code.

5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families2 casesWorldwideCase(s)Validated1379303[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_1379303[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.

6

HPO phenotypes

10 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0010719Abnormality of hair texture
HP:0100840Aplasia/Hypoplasia of the eyebrow
HP:0001251Ataxia
HP:0001263Global developmental delay
HP:0001510Growth delay
HP:0001382Joint hypermobility
HP:0003777Pili torti
HP:0200102Sparse or absent eyelashes
Frequent (79-30%)
HP:0001288Gait disturbance
HP:0001252Hypotonia

Run the differential on the 8 obligate / very frequent terms

7

Sources for this card