raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:96175

Ring chromosome 11 syndrome

Synonyms: RC11 · Ring 11 · Ring chromosome 11 · r(11) syndrome

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

A rare autosomal anomaly characterized by variable clinical features, including early growth retardation and short stature, microcephaly, developmental delay, some degree of intellectual disability, facial dysmorphism and café-au-lait spots. In some cases, congenital heart disease and endocrine abnormalities have been reported.

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Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enRing chromosome 11 syndromeRC11 · Ring 11 · Ring chromosome 11 · r(11) syndrome
frSyndrome du chromosome 11 en anneauChromosome 11 en anneau · Syndrome r(11)
deRingchromosom-11-SyndromRC11 · Ringchromosom 11 · r(11)-Syndrom
esSíndrome del cromosoma 11 en anilloAnillo 11 · Cromosoma 11 en anillo · RC11 · Síndrome r(11)
itSindrome del cromosoma 11 ad anello
nlRingchromosoom 11-syndroomRC11 · Ring 11 · Ringchromosoom 11 · r(11)-syndroom
ptCromossoma 11 em anel
plChromosom pierścieniowy 11= en
csRing chromozom 11Kruhový chromozom 11
ukСиндром кільцевої хромосоми 11r(11) синдром · RC11 · Кільце 11 · Кільцева хромосома 11
zh11号环状染色体综合征r(11)综合征
trHalka kromozom 11 sendromuRC11 · Halka 11 · r (11) sendromu · Halka kromozomu 11

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10Q93.2NTBTattributedvalidated
ICD-11LD7YNTBTindexvalidated
MONDO0019906Evalidated
UMLSC0265444Evalidated
GARD10846Evalidated

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/families20 casesWorldwideCase(s)Validated26576288[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_26576288[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

21 annotations · validated 2025-09-18
HPOTerm (as annotated by Orphanet)Diagnostic
Frequent (79-30%)
HP:0000271Abnormality of the face
HP:0000957Cafe-au-lait spot
HP:0004325Decreased body weight
HP:0001263Global developmental delay
HP:0001249Intellectual disability
HP:0000252Microcephaly
HP:0004322Short stature
Occasional (29-5%)
HP:0001627Abnormal heart morphology
HP:0030084Clinodactyly
HP:0008665Clitoral hypertrophy
HP:0000028Cryptorchidism
HP:0000750Delayed speech and language development
HP:0001510Growth delay
HP:0001007Hirsutism
HP:0000047Hypospadias
HP:0000821Hypothyroidism
HP:0001511Intrauterine growth retardation
HP:0002667Nephroblastoma
HP:0001513Obesity
HP:0000826Precocious puberty
HP:0005590Spotty hypopigmentation

Annotation source: 22975011[PMID]_26576288[PMID]

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Sources for this card