raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:96149

Distal deletion 12q syndrome

Synonyms: Distal monosomy 12q · Monosomy 12qter · Telomeric deletion 12q

Type
Malformation syndrome
Group
Disorder
Age of onset
Neonatal
Status
active

A rare partial deletion of the long arm of chromosome 12 characterized by variable combinations of developmental delay, intellectual disability, behavioral abnormalities, variable dysmorphic facial features (including microcephalus, coarse face, synophrys, epicanthal folds, large bulbous nose, small ears, low-set and posteriorly rotated ears, or large tongue, among others), and other anomalies such as malformations of the hands and fingers/feet and toes, skin and nail abnormalities, and genitourinary and cardiac abnormalities, among others.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enDistal deletion 12q syndromeDistal monosomy 12q · Monosomy 12qter · Telomeric deletion 12q
frSyndrome de délétion distale 12qDélétion 12qter · Délétion télomérique 12q · Monosomie 12qter · Monosomie distale 12q · Monosomie télomérique 12q
deDistale Deletion 12qDeletion 12q, distale · Distale Monosomie 12q · Monosomie 12qter · Telomere Deletion 12q
esSíndrome de deleción terminal 12qMonosomía 12qter · Monosomía terminal 12q
itSindrome delezione 12q distaleMonosomia 12q distale · Delezione 12q telomerica · Monosomia 12qter
nlDistale deletie 12q-syndroomDistale monosomie 12q · Monosomie 12qter · Telomerische deletie 12q
ptDeleção distal 12qDeleção telomérica 12q · Monossomia 12qter · Monossomia distal 12q
plZespół delecji dystalnej 12qDelecja dystalna 12q · Delecja telomerowa 12q · Monosomia 12qter
csDistální monozomie 12qDistální delece 12q · Monozomie 12qter · Telomerická delece 12q
ukДистальна делеція 12qДистальна моносомія 12q · Моносомія 12qter · Делеція теломерної ділянки 12q
zh12号染色体长臂远端单体12号染色体长臂端粒缺失
trDistal monozomi 12qMonozomi 12qter · Distal delesyon 12q · Telomerik delesyon 12q

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10Q93.5NTBTattributedvalidated
ICD-11LD44.C0NTBTindexvalidated
MONDO0019897Evalidated
UMLSC5438460Evalidated

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.

4

Genes

0 direct

Orphanet records no gene directly on this code.

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Prevalence and incidence

0 records

No prevalence record in this release.

6

HPO phenotypes

76 annotations · validated 2019-02-04
HPOTerm (as annotated by Orphanet)Diagnostic
Occasional (29-5%)
HP:00046912-3 toe syndactyly
HP:0001999Abnormal facial shape
HP:0001734Annular pancreas
HP:0000463Anteverted nares
HP:0009437Aplasia/Hypoplasia of the middle phalanx of the 3rd finger
HP:0008513Bilateral conductive hearing impairment
HP:0005912Biliary atresia
HP:0000248Brachycephaly
HP:0010055Broad hallux
HP:0006533Bronchodysplasia
HP:0000414Bulbous nose
HP:0004209Clinodactyly of the 5th finger
HP:0000280Coarse facial features
HP:0005129Congenital hypertrophy of left ventricle
HP:0002194Delayed gross motor development
HP:0000750Delayed speech and language development
HP:0000819Diabetes mellitus
HP:0000494Downslanted palpebral fissures
HP:0002247Duodenal atresia
HP:0000086Ectopic kidney
HP:0002987Elbow flexion contracture
HP:0002032Esophageal atresia
HP:0001531Failure to thrive in infancy
HP:0002213Fine hair
HP:0012368Flat face
HP:0002007Frontal bossing
HP:0001290Generalized hypotonia
HP:0010818Generalized tonic seizure
HP:0001263Global developmental delay
HP:0001510Growth delay
HP:0008499High hypermetropia
HP:0002705High, narrow palate
HP:0000126Hydronephrosis
HP:0000752Hyperactivity
HP:0001611Hypernasal speech
HP:0007328Impaired pain sensation
HP:0001249Intellectual disability
HP:0002751Kyphoscoliosis
HP:0002003Large forehead
HP:0001176Large hands
HP:0007573Late onset atopic dermatitis
HP:0001833Long foot
HP:0000343Long philtrum
HP:0000369Low-set ears
HP:0000256Macrocephaly
HP:0004904Maturity-onset diabetes of the young
HP:0000161Median cleft lip
HP:0000252Microcephaly
HP:0000171Microglossia
HP:0000347Micrognathia
HP:0000054Micropenis
HP:0008551Microtia
HP:0001513Obesity
HP:0008770Obsessive-compulsive trait
HP:0001845Overlapping toe
HP:0001643Patent ductus arteriosus
HP:0001655Patent foramen ovale
HP:0008081Pes valgus
HP:0002893Pituitary adenoma
HP:0000113Polycystic kidney dysplasia
HP:0009904Prominent ear helix
HP:0011407Proportionate tall stature
HP:0002021Pyloric stenosis
HP:0000742Self-mutilation
HP:0005819Short middle phalanx of finger
HP:0000470Short neck
HP:0004322Short stature
HP:0000954Single transverse palmar crease
HP:0001792Small nail
HP:0000319Smooth philtrum
HP:0011069Supernumerary tooth
HP:0000506Telecanthus
HP:0009891Underdeveloped supraorbital ridges
HP:0012741Unilateral cryptorchidism
HP:0000076Vesicoureteral reflux
HP:0000260Wide anterior fontanel

Annotation source: 12121357[PMID]_12687666[PMID]_16200635[PMID]_21457577[PMID]_23613162[PMID]_25425063[PMID]

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Sources for this card