raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:261197

Proximal 16p11.2 microdeletion syndrome

Synonyms: Proximal del(16)(p11.2) · Proximal monosomy 16p11.2

Type
Malformation syndrome
Group
Disorder
Inheritance
Autosomal dominant, Not applicable
Age of onset
Childhood
Status
active

The proximal 16p11.2 microdeletion syndrome is a chromosomal anomaly characterized by developmental and language delays, mild intellectual disability, social impairments (autism spectrum disorders), mild variable dysmorphism and predisposition to obesity.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enProximal 16p11.2 microdeletion syndromeProximal del(16)(p11.2) · Proximal monosomy 16p11.2
frSyndrome de microdélétion 16p11.2 proximaleDel(16)(p11.2) proximale · Monosomie 16p11.2 proximale
deMikrodeletionssyndrom 16p11.2, proximalesDel(16)(p11.2) · Monosomie 16p11.2
esSíndrome de microdeleción proximal 16p11.2Del(16)(p11.2) proximal · Monosomía proximal 16p11.2
itSindrome da microdelezione 16p11.2 prossimaleDel(16)(p11.2) prossimale · Monosomia 16p11.2 prossimale
nlProximale 16p11.2-microdeletiesyndroomProximale Del(16)(p11.2) · Proximale monosomie 16p11.2
ptSíndrome de microdeleção proximal 16p11.2
plZespół mikrodelecji proksymalnej 16p11.2Monosomia proksymalna 16p11.2 · Proksymalna del(16)(p11.2)
csSyndrom proximální mikrodelece 16p11.2Proximální del(16)(p11.2) · Proximální monozomie 16p11.2
ukСиндром проксимальної мікроделеції 16p11.2Proximal del(16)(p11.2) · Проксимальна моносомія 16p11.2
zh近端染色体16p11.2微缺失综合征16p11.2近端单体
trProksimal 16p11.2 mikrodelesyon sendromuProksimal del (16) (p11.2) · Proksimal monozomi 16p11.2

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM611913Evalidated
ICD-10Q93.5NTBTattributedvalidated
ICD-11LD44.G1NTBTindexvalidated
MONDO0012756Evalidated
UMLSC4273657Evalidated
GARD10740Evalidated

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

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
SH2B1Role in the phenotype ofAssessedHGNC:30417ENSG0000017818860893716p11.2SH2B adaptor protein 1
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Point prevalence1-5 / 10 00020 / 100 000EuropeValue and classValidated19306953[PMID]_[EXPERT]
Point prevalence1-5 / 10 00020 / 100 000United StatesValue and classValidated21731881[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

52 annotations · validated 2021-05-03
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0000708Atypical behavior
HP:0000729Autistic behavior
HP:0001263Global developmental delay
Frequent (79-30%)
HP:0007018Attention deficit hyperactivity disorder
HP:0410263Brain imaging abnormality
HP:0000750Delayed speech and language development
HP:0001249Intellectual disability
HP:0001256Intellectual disability, mild
HP:0000256Macrocephaly
HP:0011351Moderate receptive language delay
HP:0001270Motor delay
HP:0006863Severe expressive language delay
HP:0001328Specific learning disability
HP:0009088Speech articulation difficulties
Occasional (29-5%)
HP:0001646Abnormal aortic valve morphology
HP:0001999Abnormal facial shape
HP:0001627Abnormal heart morphology
HP:0000733Abnormal repetitive mannerisms
HP:0003468Abnormal vertebral morphology
HP:0100702Arachnoid cyst
HP:0001631Atrial septal defect
HP:0000717Autism
HP:0000337Broad forehead
HP:0007099Chiari type I malformation
HP:0001266Choreoathetosis
HP:0000405Conductive hearing impairment
HP:0001332Dystonia
HP:0002280Enlarged cisterna magna
HP:0001508Failure to thrive
HP:0011968Feeding difficulties
HP:0002020Gastroesophageal reflux
HP:0000316Hypertelorism
HP:0000347Micrognathia
HP:0011800Midface retrusion
HP:0001513Obesity
HP:0007166Paroxysmal dyskinesia
HP:0002691Platybasia
HP:0012760Reduced social responsiveness
HP:0002650Scoliosis
HP:0001250Seizure
HP:0000407Sensorineural hearing impairment
HP:0011098Speech apraxia
HP:0002119Ventriculomegaly
Very rare (<4-1%)
HP:0000175Cleft palate
HP:0000776Congenital diaphragmatic hernia
HP:0001363Craniosynostosis
HP:0001651Dextrocardia
HP:0001161Hand polydactyly
HP:0000003Multicystic kidney dysplasia
HP:0002021Pyloric stenosis
HP:0000902Rib fusion
HP:0003396Syringomyelia

Run the differential on the 3 obligate / very frequent terms

Annotation source: 20301775[PMID]_29636920[PMID]_19914906[PMID]

7

Sources for this card