raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:456328

X-linked myotubular myopathy-abnormal genitalia syndrome

Synonyms: Xq28 contiguous gene deletion syndrome

Type
Disease
Group
Disorder
Inheritance
Unknown
Age of onset
Antenatal, Neonatal
Status
active

X-linked myotubular myopathy-abnormal genitalia syndrome is a rare chromosomal anomaly, partial deletion of the long arm of chromosome X, characterized by a combination of clinical manifestations of X-linked myotubular myopathy and a 46,XY disorder of sex development. Patients present with severe form of congenital myopathy and abnormal male genitalia.

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Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enX-linked myotubular myopathy-abnormal genitalia syndromeXq28 contiguous gene deletion syndrome
frSyndrome de myopathie centronucléaire liée à l'X-anomalies génitalesSyndrome de délétion de gènes contigus Xq28
deX-chromosomale myotubuläre Myopathie-Genitalanomalien-SyndromXq28-Contiguous gene deletion-Syndrom
esSíndrome de miopatía miotubular-anomalías genitales ligado al cromosoma XMiopatía miotubular y genitales ambiguos · Síndrome de deleción de genes contiguos Xq28
itSindrome miopatia miotubulare-anomalie genitali legata all'XSindrome da delezione di geni contigui Xq28
nlX-gebonden myotubulaire myopathie - abnormale genitaliën-syndroomXq28-'contiguous gene'-deletiesyndroom
ptSíndrome de miopatia microtubular-anomalias genitais ligada ao XSíndrome de deleção de genes contíguos Xq28
plZespół miopatii miotubularnej sprzężonej z chromosomem X i nieprawidłowych narządów płciowychZespół delecji przyległego genu Xq28
csSyndrom zahrnující X-vázanou myotubulární myopatii a abnormality genitáluMikrodeleční syndrom Xq28
ukХ-зчеплений синдром міотубулярної міопатії-аномальних геніталійСиндром делеції суміжного гена Xq28
zhX连锁-肌管性肌病-生殖器异常综合征Xq28连续基因缺失综合征
trX'e bağlı miyotübüler miyopati-anormal genital sendromXq28 bitişik gen delesyon sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM300219Evalidated
ICD-10Q99.8NTBTattributedvalidated
MONDO0010271Evalidated
MeSHC564561Evalidated
UMLSC1846169Evalidated

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 (5):

No children.

4

Genes

2 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
MAMLD1Role in the phenotype ofAssessedHGNC:2568ENSG00000013619300120Xq28mastermind like domain containing 19169146[PMID]_26580071[PMID]
MTM1Role in the phenotype ofAssessedHGNC:7448ENSG00000171100300415Xq28myotubularin 18789451[PMID]
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Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families4 casesWorldwideCase(s)Validated10449925[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_10449925[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

15 annotations · validated 2019-09-10
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0001290Generalized hypotonia
Frequent (79-30%)
HP:0000048Bifid scrotum
HP:0040314Blind vagina
HP:0000028Cryptorchidism
HP:0000807Glandular hypospadias
HP:0000054Micropenis
HP:0003244Penile hypospadias
HP:0000808Penoscrotal hypospadias
HP:0001561Polyhydramnios
HP:0002093Respiratory insufficiency
Occasional (29-5%)
HP:0011968Feeding difficulties
HP:0000218High palate
HP:0001382Joint hypermobility
HP:0000278Retrognathia
HP:0000883Thin ribs

Run the differential on the 1 obligate / very frequent terms

Annotation source: 10449925[PMID]_8789451[PMID]

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Sources for this card