raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:1596

Distal deletion 15q syndrome

Synonyms: 15q26 deletion syndrome · Distal monosomy 15q · Monosomy 15q26 · Telomeric 15q deletion syndrome

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

Distal monosomy 15q is a rare chromosomal anomaly syndrome characterized by pre- and postnatal growth restriction, developmental delay, variable degrees of intellectual disability, hand and foot anomalies (e.g. brachy-/clinodactyly, talipes equinovarus, nail hypoplasia, proximally placed digits) and mild craniofacial dysmorphism (incl. microcephaly, triangular face, broad nasal bridge, micrognathia). Neonatal lymphedema, heart malformations, aplasia cutis congenita, aortic root dilatation, and autistic spectrum disorder have also been reported.

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Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enDistal deletion 15q syndrome15q26 deletion syndrome · Distal monosomy 15q · Monosomy 15q26 · Telomeric 15q deletion syndrome
frSyndrome de délétion distale 15qMonosomie 15q26 · Monosomie distale 15q · Syndrome de délétion 15q26 · Syndrome de délétion télomérique 15q
deDistale Deletion 15q15q26-Deletionssyndrom · Distale Monosomie 15q · Monosomie 15q26 · Telomeres 15q-Deletionssyndrom
esSíndrome de deleción terminal 15qMonosomía 15q26 · Monosomía terminal 15q · Síndrome de deleción 15q26
itSindrome delezione 15q distaleMonosomia 15q distale · Monosomia 15q26 · Sindrome delezione 15q telomerica · Sindrome delezione 15q26
nlDistale deletie 15q-syndroom15q26-deletiesyndroom · Distale monosomie 15q · Monosomie 15q26 · Telomerische 15q-deletiesyndroom
ptDeleção distal 15qMonossomia 15q26 · Síndrome de deleção 15q26 · Síndrome de deleção telomérica 15q
plZespół delecji dystalnej 15qDelecja 15q26 · Zespół delecji 15q26 · Zespół dystalnej delecji 15q26 · Zespół telomerowej delecji 15q26 · Delecja telomerowa 15q
csDistální monozomie 15qSyndrom delece 15q26 · Distální delece 15q syndrom · Monozomie 15q26 · Telomerická delece 15q syndrom
ukДистальна делеція 15qСиндром делеції 15q26 · Дистальна моносомія 15q · Моносомія 15q26 · Синдром делеції теломерної ділянки 15q
zh远端单倍体15q末端着丝粒15q26缺失综合征
trDistal monozomi 15qMonozomi 15q26 · 15q26 delesyon sendromu · Distal 15q delesyon sendromu · Telomerik 15q delesyon sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM612626Evalidated
ICD-10Q93.5NTBTattributedvalidated
ICD-11LD44.FNTBTindexvalidated
MONDO0012964Evalidated
UMLSC4707662Evalidated

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 (1):

No children.

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Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
MCTP2Role in the phenotype ofAssessedHGNC:25636ENSG0000014056361629715q26.2multiple C2 and transmembrane domain containing 223773997[PMID]
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Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families30 casesWorldwideCase(s)Validated22065603[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_22065603[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

59 annotations · validated 2017-08-28
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0001511Intrauterine growth retardation
HP:0001518Small for gestational age
Frequent (79-30%)
HP:00057092-3 toe cutaneous syndactyly
HP:0012303Abnormal aortic arch morphology
HP:0000164Abnormality of the dentition
HP:0007018Attention deficit hyperactivity disorder
HP:0000729Autistic behavior
HP:0001647Bicuspid aortic valve
HP:0010297Bifid tongue
HP:0000581Blepharophimosis
HP:0000455Broad nasal tip
HP:0000175Cleft palate
HP:0001680Coarctation of aorta
HP:0000280Coarse facial features
HP:0000776Congenital diaphragmatic hernia
HP:0000028Cryptorchidism
HP:0030353Decreased serum insulin-like growth factor 1
HP:0000750Delayed speech and language development
HP:0001508Failure to thrive
HP:0040019Finger clinodactyly
HP:0005469Flat occiput
HP:0002761Generalized joint hypermobility
HP:0002857Genu valgum
HP:0001263Global developmental delay
HP:0001510Growth delay
HP:0000365Hearing impairment
HP:0002827Hip dislocation
HP:0000316Hypertelorism
HP:0000047Hypospadias
HP:0030918Low 1-minute APGAR score
HP:0000369Low-set ears
HP:0000252Microcephaly
HP:0000347Micrognathia
HP:0000054Micropenis
HP:0001718Mitral stenosis
HP:0008897Postnatal growth retardation
HP:0002089Pulmonary hypoplasia
HP:0001250Seizure
HP:0009882Short distal phalanx of finger
HP:0009381Short finger
HP:0000322Short philtrum
HP:0004322Short stature
HP:0200055Small hand
HP:0001792Small nail
HP:0000486Strabismus
HP:0001762Talipes equinovarus
HP:0000219Thin upper lip vermilion
HP:0000325Triangular face
HP:0000582Upslanted palpebral fissure
Occasional (29-5%)
HP:0100542Abnormal localization of kidney
HP:0004471Aplasia cutis congenita over the scalp vertex
HP:0000476Cystic hygroma
HP:0011651Double outlet right ventricle with doubly committed ventricular septal defect and pulmonary stenosis
HP:0004383Hypoplastic left heart
HP:0011560Mitral atresia
HP:0000003Multicystic kidney dysplasia
HP:0001643Patent ductus arteriosus
HP:0000954Single transverse palmar crease
HP:0001195Single umbilical artery

Run the differential on the 2 obligate / very frequent terms

Annotation source: 17702015[PMID]_1849352[PMID]_20962017[PMID]_27192887[PMID]_16114049[PMID]_18512227[PMID]_23603061[PMID]

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Sources for this card