1. Large exonic deletions in POLRB gene cause POLR3-related leukodystrophy.
- Author
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Gutierrez, Mariana, Thiffault, Isabelle, Guerrero, Kether, Martos-Moreno, Gabriel Á., Tran, Luan T., Benko, William, van der Knaap, Marjo S., van Spaendonk, Rosalina M. L., Wolf, Nicole I., and Bernard, Geneviève
- Subjects
DELETION mutation ,EXONS (Genetics) ,LEUKODYSTROPHY ,GENETIC mutation ,ANTISENSE DNA ,HUMAN phenotype - Abstract
POLR3-related (or 4H) leukodystrophy is an autosomal recessive disorder caused by mutations in POLR3A or POLR3B and is characterized by neurological and non-neurological features. In a small proportion of patients, no mutation in either gene or only one mutation is found. Analysis of the POLR3B cDNA revealed a large deletion of exons 21-22 in one case and of exons 26-27 in another case. These are the first reports of long deletions causing POLR3-related leukodystrophy, suggesting that deletions and duplications in POLR3A or POLR3B should be investigated in patients with a compatible phenotype, especially if one pathogenic variant has been identified. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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