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1 OMIM reference -
1 associated gene
27 signs/symptoms
COMMON GENES: 1
COMMON SIGNS: 2
1 OMIM reference -
1 associated gene
20 signs/symptoms
Fragile X syndrome
Xq27.3q28 duplication syndrome

FMR1 FMR1


COMMON
GENES
FMR1



Citations in the biomedical literature:


Fragile X syndrome
FMR1
Xq27.3q28 duplication syndrome



Fragile X syndrome
Xq27.3q28 duplication syndrome

Synonym(s):
- FRAXA syndrome
- FXS
- FraX syndrome
- Martin-Bell syndrome

Synonym(s):
- Dup(X)(q27.3q28)
- Trisomy Xq27.3-q28
- Trisomy Xq27.3q28
- Xq27.3-q28 microduplication syndrome

Classification (Orphanet):
- Rare developmental defect during embryogenesis
- Rare endocrine disease
- Rare eye disease
- Rare genetic disease
- Rare maxillo-facial surgical disease
- Rare neurologic disease
- Rare otorhinolaryngologic disease
Classification (Orphanet):
- Rare developmental defect during embryogenesis
- Rare genetic disease

Classification (ICD10):
- Congenital malformations, deformations and chromosomal abnormalities -
Classification (ICD10):
- Congenital malformations, deformations and chromosomal abnormalities -

Epidemiological data:
Class of prevalence: 1-5 / 10 000
Average age onset: childhood
Average age of death: normal
Type of inheritance: x-linked dominant
Epidemiological data:
Class of prevalence: <1 / 1 000 000
Average age onset: neonatal/infancy
Average age of death: -
Type of inheritance: x-linked recessive

External references:
1 OMIM reference -
1 MeSH reference: D005600
External references:
1 OMIM reference -
No MeSH references


COMMON
SIGNS
- Hypotonia
- Intellectual deficit / mental / psychomotor retardation / learning disability


Fragile X syndrome
Xq27.3q28 duplication syndrome

Very frequent
- Chronic / relapsing otitis
- Flat foot
- Fragile chromosome X site
- Hyperextensible joints / articular hyperlaxity
- Macroorchidism / macrotestes
- Speech troubles / aphasia / dysphasia / echolalia / mutism / logorrhea / dysprosodia
- X-linked dominant inheritance

Frequent
- Frontal bossing / prominent forehead
- Gastroesophageal reflux / pyrosis / esophagitis / hiatal hernia / gastroparesia
- Hyperactivity / attention deficit
- Long face
- Macrocephaly / macrocrania / megalocephaly / megacephaly
- Narrow face
- Nasal congestion / sinusitis / rhinitis / rhinorrhea
- Prognathism / prognathia
- Prominent / bat ears

Occasional
- Aortic root dilatation / dilation / aneurysm
- Autism / autistic disoders
- Auto-aggressivity / auto-mutilation
- Cortical atrophy without hydrocephaly / cerebral hemiatrophy / subcortical atrophy
- Humour troubles / anxiety / depression / apathy / euphoria / irritability
- Mitral valve prolapse / incompetence / insufficiency / regurgitation / ring anomaly
- Psychosis / schizophrenia / maniac disorder
- Seizures / epilepsy / absences / spasms / status epilepticus
- Strabismus / squint


Very frequent
- Abnormal cry / voice / phonation disorder / nasal speech
- Deepset eyes / enophthalmos
- Failure to thrive / difficulties for feeding in infancy / growth delay
- Late puberty / hypogonadism / hypogenitalism
- Long / large / bulbous nose
- Short stature / dwarfism / nanism
- Small foot
- Small hand / acromicria
- Small / atrophic / hypoplastic testes / monorchism / microorchidism / anorchia
- Thin / retracted lips
- Total / partial trisomy / duplication
- Undescended / ectopic testes / cryptorchidia / unfixed testes

Frequent
- Decreased body hair / axillar / pubic hairlessness
- Delayed bone age
- Gynecomastia / breast / mammary gland enlargement / hyperplasia
- Intrauterine growth retardation
- Truncal obesity

Occasional
- Precocious menopause / secondary amenorrhea