Rare Diseases Symptoms Automatic Extraction

X-linked adrenoleukodystrophy.

[adrenomyeloneuropathy]

X-linked adrenoleukodystrophy (X-ALD) is caused by a defect in the gene ABCD1, which maps to Xq28 and codes for a peroxisomal membrane protein that is a member of the ATP-binding cassette transporter superfamily. X-ALD is panethnic and affects approximately 1:20,000 males. Phenotypes include the rapidly progressive childhood, adolescent, and adult cerebral forms; adrenomyeloneuropathy, which presents as slowly progressive paraparesis in adults; and Addison disease without neurologic manifestations. These phenotypes are frequently misdiagnosed, respectively, as attention-deficit hyperactivity disorder (ADHD), multiple sclerosis, or idiopathic Addison disease. Approximately 50% of female carriers develop a spastic paraparesis secondary to myelopathic changes similar to adrenomyeloneuropathy. Assays of very long chain fatty acids in plasma, cultured chorion villus cells and amniocytes, and mutation analysis permit presymptomatic and prenatal diagnosis, as well as carrier identification. The timely use of these assays is essential for genetic counseling and therapy. Early diagnosis and treatment can prevent overt Addison disease, and significantly reduce the frequency of the severe childhood cerebral phenotype. A promising new method for mass newborn screening has been developed, the implementation of which will have a profound effect on the diagnosis and therapy of X-ALD.

Diseases presenting "early diagnosis" symptom

  • achondroplasia
  • acute rheumatic fever
  • adrenal incidentaloma
  • adrenomyeloneuropathy
  • alexander disease
  • allergic bronchopulmonary aspergillosis
  • aromatase deficiency
  • carcinoma of the gallbladder
  • cholangiocarcinoma
  • classical phenylketonuria
  • coats disease
  • cohen syndrome
  • congenital adrenal hyperplasia
  • congenital diaphragmatic hernia
  • congenital toxoplasmosis
  • cowden syndrome
  • cushing syndrome
  • cutaneous mastocytosis
  • cystinuria
  • dentin dysplasia
  • dentinogenesis imperfecta
  • dracunculiasis
  • erdheim-chester disease
  • erythropoietic protoporphyria
  • esophageal carcinoma
  • esophageal squamous cell carcinoma
  • fabry disease
  • familial hypocalciuric hypercalcemia
  • familial mediterranean fever
  • gm1 gangliosidosis
  • hirschsprung disease
  • holt-oram syndrome
  • homocystinuria without methylmalonic aciduria
  • hydrocephalus with stenosis of the aqueduct of sylvius
  • inclusion body myositis
  • kabuki syndrome
  • kallmann syndrome
  • kindler syndrome
  • krabbe disease
  • locked-in syndrome
  • monosomy 21
  • neuralgic amyotrophy
  • oculocutaneous albinism
  • oligodontia
  • omenn syndrome
  • oral submucous fibrosis
  • papillon-lefèvre syndrome
  • phenylketonuria
  • primary effusion lymphoma
  • primary hyperoxaluria type 1
  • proteus syndrome
  • pyomyositis
  • pyruvate dehydrogenase deficiency
  • scrub typhus
  • severe combined immunodeficiency
  • sneddon syndrome
  • systemic capillary leak syndrome
  • thoracic outlet syndrome
  • triple a syndrome
  • typhoid
  • von hippel-lindau disease
  • wiskott-aldrich syndrome
  • wolf-hirschhorn syndrome

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