raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:1487

Cooks syndrome

Synonyms: Anonychia-onychodystrophy with hypoplasia or absence of distal phalanges syndrome · ODP

Type
Malformation syndrome
Group
Disorder
Inheritance
Autosomal dominant
Age of onset
Neonatal
Status
active

Cooks syndrome is a malformation syndrome affecting the apical structures of digits and presenting with hypo/aplasia of nails and distal phalanges. More than half of digits are usually involved and the thumbs may appear digitalized.

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Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enCooks syndromeAnonychia-onychodystrophy with hypoplasia or absence of distal phalanges syndrome · ODP
frSyndrome de CooksODP · Syndrome d'anonychie-onychodystrophie avec hypoplasie ou absence de phalanges distales
deCooks-SyndromAnonychie-Onychodystrophie mit Hypoplasie oder Fehlen der distalen Phalangen
esSíndrome de CooksAnoniquia-onicodistrofia con hipoplasia o ausencia de falanges distales · ODP
itSindrome di CooksAnonichia - onicodistrofia con ipoplasia o assenza delle falangi distali · ODP
nlSyndroom van CooksAnonychie - onychodystrofie met hypoplasie of afwezigheid van distale falangen-syndroom · ODP
ptSíndrome CooksAnoníquia-onicodistrofia com hipoplasia ou ausência das falanges distais
plZespół CooksaAnonychia - onychodystrofia z hipoplazją lub brakiem paliczków dalszych · ODP
csCooksové syndromSyndrom zahrnující anonychii a onychodystrofii s hypoplázií nebo aplázií distálního falangu · ODP
ukСиндром КуксаСиндром аноніхії - оніходистрофії з гіпоплазією або відсутністю дистальних фаланг · ODP
zhCooks综合征无甲或甲发育不全伴末节指骨发育不全或缺失综合征
trCooks SendromuODP · Hipoplazili anonişi-onikodistrofi veya distal falanks sendromunun yokluğu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM106995Evalidated
ICD-10Q84.6NTBTattributedvalidated
ICD-11LD27.0YNTBTindexvalidated
MONDO0007134Evalidated
MeSHC537766Evalidated
UMLSC1862841Evalidated
GARD4083Evalidated

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 (2):

No children.

Codes that Orphanet moved or referred to this one:

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Genes

0 direct

Orphanet records no gene directly on this code.

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Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families12 casesWorldwideCase(s)Validated22329539[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_22329539[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

8 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0010624Aplastic/hypoplastic toenail
HP:0001156Brachydactyly
HP:0011304Broad thumb
HP:0008391Dystrophic fingernails
HP:0001810Dystrophic toenail
HP:0001171Split hand
HP:0001199Triphalangeal thumb
Frequent (79-30%)
HP:0008388Abnormal toenail morphology

Run the differential on the 7 obligate / very frequent terms

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Sources for this card