raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:97685

17q11 microdeletion syndrome

Synonyms: Del(17)(q11) · Monosomy 17q11 · NF1 microdeletion syndrome · Neurofibromatosis type 1 microdeletion syndrome

Type
Clinical subtype
Group
Subtype of disorder
Inheritance
Not applicable
Age of onset
Antenatal, Infancy, Neonatal
Status
active

17q11 microdeletion syndrome is a rare severe form of neurofibromatosis type 1 (NF1) characterized by mild facial dysmorphism, developmental delay, intellectual disability, increased risk of malignancies, and a large number of neurofibromas.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
en17q11 microdeletion syndromeDel(17)(q11) · Monosomy 17q11 · NF1 microdeletion syndrome · Neurofibromatosis type 1 microdeletion syndrome
frSyndrome de microdélétion 17q11Del(17)(q11) · Monosomie 17q11 · Syndrome de microdélétion-NF1 · Syndrome de microdélétion-neurofibromatose type 1
deMikrodeletionssyndrom 17q11Del(17)(q11) · Monosomie 17q11 · NF1-Mikrodeletionssyndrom · Neurofibromatose Typ 1-Mikrodeletionssyndrom
esSíndrome de microdeleción 17q11Del(17)(q11) · Monosomía 17q11 · Síndrome de microdeleción NF1 · Síndrome de microdeleción neurofibromatosis tipo 1
itSindrome da microdelezione 17q11Del(17)(q11) · Monosomia 17q11 · Sindrome da microdelezione-NF1 · Sindrome da microdelezione-neurofibromatosi tipo 1
nl17q11-microdeletiesyndroomDel(17)(q11) · Monosomie 17q11 · NF1-microdeletiesyndroom · Neurofibromatose type 1-microdeletiesyndroom
ptSíndrome de microdeleção 17q11
plZespół mikrodelecji 17q11Del(17)(q11) · Monosomia 17q11 · NF1 spowodowany mikrodelecją · Zespół mikrodelecji NF1
csMikrodeleční syndrom 17q11Del(17)(q11) · Monozomie 17q11 · Mikrodeleční syndrom NF1 · Neurofibromatóza, typ 1, mikrodeleční syndrom
ukСиндром мікроделеції 17q11Del(17)(q11) · Моносомія 17q11 · Синдром мікроделеції нейрофіброматозу типу 1 · Синдром мікроделеції NF1
zh17q11微缺失综合征神经纤维瘤病1型微缺失综合征
tr17q11 mikrodelesyon sendromuDel (17) (q11) · Monozomi 17q11 · NF1 mikrodelesyon sendromu · Nörofibromatoz tip 1 mikrodelesyon sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM613675Evalidated
ICD-10Q85.0NTBTattributedvalidated
ICD-11LD44.H0NTBTindexvalidated
MONDO0013357Evalidated
MeSHC563524Evalidated
UMLSC5401456Evalidated
GARD5408Evalidated

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
NF1Role in the phenotype ofAssessedHGNC:7765ENSG0000019671261311317q11.2neurofibromin 1
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families170 casesWorldwideCase(s)Validated16467218[PMID]
Point prevalenceUnknown—WorldwideClass onlyValidatedORPHANET

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

94 annotations · validated 2020-10-16
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0001480Freckling
HP:0007565Multiple cafe-au-lait spots
HP:0012760Reduced social responsiveness
HP:0000736Short attention span
Frequent (79-30%)
HP:0001999Abnormal facial shape
HP:0001627Abnormal heart morphology
HP:0011442Abnormality of central motor function
HP:0000271Abnormality of the face
HP:0000708Atypical behavior
HP:0004562Beaking of vertebral bodies T12-L3
HP:0410263Brain imaging abnormality
HP:0002315Headache
HP:0000822Hypertension
HP:0002463Language impairment
HP:0009737Lisch nodules
HP:0002354Memory impairment
HP:0002076Migraine
HP:0025105Nevus anemicus
HP:0200034Papule
HP:0009732Plexiform neurofibroma
HP:0000529Progressive visual loss
HP:0002360Sleep abnormality
HP:0001328Specific learning disability
HP:0100585Telangiectasia of the skin
HP:0001072Thickened skin
Occasional (29-5%)
HP:0000610Abnormal choroid morphology
HP:3000062Abnormal internal carotid artery morphology
HP:0002088Abnormal lung morphology
HP:0430022Abnormality of the sphenoid sinus
HP:0000925Abnormality of the vertebral column
HP:0007524Atypical neurofibromatosis
HP:0000729Autistic behavior
HP:0000618Blindness
HP:0030692Brain neoplasm
HP:0010796Brainstem glioma
HP:0000337Broad forehead
HP:0010795Cerebellar glioma
HP:0012492Cerebral artery stenosis
HP:0001680Coarctation of aorta
HP:0000490Deeply set eye
HP:0000823Delayed puberty
HP:0004944Dilatation of the cerebral artery
HP:0003165Elevated circulating parathyroid hormone level
HP:0007359Focal-onset seizure
HP:0000501Glaucoma
HP:0009733Glioma
HP:0001263Global developmental delay
HP:0001034Hypermelanotic macule
HP:0001639Hypertrophic cardiomyopathy
HP:0001249Intellectual disability
HP:0001511Intrauterine growth retardation
HP:0002808Kyphosis
HP:0001176Large hands
HP:0001833Long foot
HP:0031023Multiple mucosal neuromas
HP:0032458Narrowing of medullary canal
HP:0100697Neurofibrosarcoma
HP:0009734Optic nerve glioma
HP:0002797Osteolysis
HP:0000938Osteopenia
HP:0000939Osteoporosis
HP:0012531Pain
HP:0001271Polyneuropathy
HP:0000520Proptosis
HP:0002092Pulmonary arterial hypertension
HP:0001642Pulmonic stenosis
HP:0007236Recurrent subcortical infarcts
HP:0001920Renal artery stenosis
HP:0100817Renovascular hypertension
HP:0007850Retinal vascular proliferation
HP:0100008Schwannoma
HP:0002650Scoliosis
HP:0001250Seizure
HP:0004322Short stature
HP:0000486Strabismus
HP:0001297Stroke
HP:0000935Thickened cortex of long bones
Very rare (<4-1%)
HP:0002979Bowing of the legs
HP:0003002Breast carcinoma
HP:0005280Depressed nasal bridge
HP:0100252Diaphyseal dysplasia
HP:0000494Downslanted palpebral fissures
HP:0100775Dural ectasia
HP:0100723Gastrointestinal stroma tumor
HP:0003001Glomus jugular tumor
HP:0000316Hypertelorism
HP:0001909Leukemia
HP:0000369Low-set ears
HP:0002863Myelodysplasia
HP:0002666Pheochromocytoma
HP:0000826Precocious puberty
HP:0002859Rhabdomyosarcoma
HP:0000465Webbed neck
HP:0006610Wide intermamillary distance

Run the differential on the 4 obligate / very frequent terms

Annotation source: 30564341[PMID]_20301288[PMID]

7

Sources for this card