raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:314667

TMEM165-CDG

Synonyms: Carbohydrate deficient glycoprotein syndrome type IIk · Congenital disorder of glycosylation type 2k · Congenital disorder of glycosylation type IIk · CDG syndrome type IIk · CDG-IIk · CDG2K

Type
Disease
Group
Disorder
Inheritance
Autosomal recessive
Age of onset
Infancy, Neonatal
Status
active

TMEM165-CDG is a form of congenital disorders of N-linked glycosylation characterized by a psychomotor delay-dysmorphism (pectus carinatum, dorsolumbar kyphosis and severe sinistroconvex scoliosis, short distal phalanges, genua vara, pedes planovalgi syndrome) with postnatal growth deficiency and major spondylo-, epi-, and metaphyseal skeletal involvement. Additional features include facial dysmorphism (midface hypoplasia, internal strabism of the right eye, low-set ears, moderately high arched palate, small teeth), nephrotic syndrome, cardiac defects, and feeding problems. The disease is caused by mutations in the gene <i>TMEM165</i> (4q12).

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enTMEM165-CDGCarbohydrate deficient glycoprotein syndrome type IIk · Congenital disorder of glycosylation type 2k · Congenital disorder of glycosylation type IIk · CDG syndrome type IIk · CDG-IIk · CDG2K
frTMEM165-CDGAnomalie congénitale de la glycosylation type 2k · Anomalie congénitale de la glycosylation type IIk · CDG-IIk · CDG2K · Syndrome CDG type IIk · Syndrome des glycoprotéines déficientes en hydrates de carbone type IIk
deTMEM165-CDGCDG (Congenital Disorder of Glycosylation) Typ Iik · CDG-IIk · CDG-Syndrom Typ IIk · CDG2K · Kohlenhydrat-defizientes Glykoprotein-Syndrom Iik · Kongenitaler Defekt der Glycoproteinbiosynthese Typ IIk
esTMEM165-CDGCDG-IIk · CDG2k · Síndrome CDG tipo IIk · Síndrome de glicoproteínas deficientes en carbohidratos tipo Iik · Trastorno congénito de la glicosilación tipo 2k · Trastorno congénito de la glicosilación tipo Iik
itTMEM165-CDGCDG-IIk · CDG2k · Sindrome CDG, tipo IIk
nlTMEM165-CDGCDG-IIk · CDG-syndroom type IIk · CDG2K · Congenitale defecten van de glycosylering type 2k · Congenitale defecten van de glycosylering type IIk · Congenitale glycosylatiestoornis type 2k · Congenitale glycosylatiestoornis type IIk · Koolhydraatdeficiënt glycoproteïne syndroom type IIk
ptSíndrome CDG associado ao gene TMEM165CDG-IIk · CDG2k · Síndrome CDG tipo 2k · Síndrome CDG tipo IIk
plTMEM165-CDGCDG2K · CDG-IIk · Zespół CDG typu IIk · Wrodzone zaburzenie glikozylacji typu 2k · Wrodzone zaburzenie glikozylacji typu IIk · Zespół obniżonej glikozylacji glikoprotein typu IIk
csCDG syndrom, typ IIkCDG-IIk · CDG2K
ukTMEM165-CDGВуглеводно-дефіцитний глікопротеїновий синдром типу IIk · Синдром CDG, тип IIk · CDG2K · CDG-IIk · Вроджене порушення глікозилювання типу 2k · Вроджене порушення глікозилювання типу IIk
zhTMEM165基因型先天性糖基化障碍糖缺乏性糖蛋白综合征IIk型
trTMEM165-CDGCDG2K · CDG-IIk · CDG sendromu tip IIk · Doğumsal glikozilasyon bozukluğu tip 2k · Doğumsal glikozilasyon bozukluğu tip IIk · Karbonhidrat eksikliği olan glikoprotein sendromu tip IIk

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM614727Evalidated
ICD-10E77.8NTBTattributedvalidated
ICD-115C54.0NTBTattributedvalidated
MONDO0013870Evalidated
UMLSC3553571Evalidated
GARD12413Evalidated

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 (5):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
TMEM165Disease-causing germline mutation(s) inAssessedHGNC:30760ENSG000001348516147264q12transmembrane protein 16522683087[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families6 casesWorldwideCase(s)Validated22683087[PMID]_26238249[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_22683087[PMID]_26238249[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

Orphanet has no HPO annotation for this code in this release.

7

Sources for this card