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Adrenoleukodystrophy; Other names: X-linked adrenoleukodystrophy, ALD, X-ALD, Siemerling–Creutzfeldt disease, bronze Schilder disease: White matter, with reduced volume and increased signal intensity. The anterior white matter is spared. Features are consistent with X-linked adrenoleukodystrophy. Pronunciation /-
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Zellweger spectrum disorders are a group of autosomal recessive genetic disorders. They are caused due to pathogenic mutations in at least 13 different PEX genes that encode peroxins. [5] It affects the peroxisomes, which are organelles in the body that are meant to breakdown items like acids and toxic compounds. Both parents will have to have ...
The protein encoded by this gene is a member of the superfamily of ATP-binding cassette (ABC) transporters. ABC proteins transport various molecules across extra- and intra-cellular membranes. ABC genes are divided into seven distinct subfamilies (ABC1, MDR/TAP, MRP, ALD, OABP, GCN20, White).
For three types of leukodystrophies (X-linked adrenoleukodystrophy (X-ALD), metachromatic leukodystrophy (MLD) and Krabbe Disease (globoid cell leukodystrophy - GLD), gene therapy using autologous hematopoietic stem cells to transfer the healthy copy of the disease-causing gene with lentiviral vectors has been shown to succeed and has been used ...
X-linked dominant inheritance, sometimes referred to as X-linked dominance, is a mode of genetic inheritance by which a dominant gene is carried on the X chromosome. As an inheritance pattern, it is less common than the X-linked recessive type.
Mutations in the genes encoding PEX1, along with PEX6, are the leading causes of peroxisomal biogenesis disorders, [9] such as Zellweger Syndrome spectrum, infantile Refsum disease, and neonatal adrenoleukodystrophy. These genetic diseases are autosomal recessive and occur in 1 of every 50,000 births. [10]
The other two disorders are neonatal adrenoleukodystrophy (NALD), and infantile Refsum disease (IRD). [5] [6] Although all have a similar molecular basis for disease, Zellweger syndrome is the most severe of these three disorders. [7] Zellweger syndrome is associated with impaired neuronal migration, neuronal positioning, and brain development. [4]