Abstract
Background
Lowe syndrome is an X-linked disorder secondary to mutations involving the OCRL1 gene. There are no data on the spectrum of the disease in the Asian population.
Methods
Detailed clinical assessment, a laboratory assessment which included both glomerular and tubular function tests and genomic DNA analysis, was carried out in six unrelated patients with Lowe syndrome.
Results
Analysis of this gene in six unrelated patients with Lowe syndrome showed novel mutations in four and previously described mutations in two. These included a missense mutation (exon 10), two nonsense mutations (exons 10 and 21), two frameshift mutations (exons 12 and 21) and a mutation at the acceptor site of intron 22. The mothers were found to be heterozygote carriers in four cases.
Conclusions
This is the first report of mutations involving the OCRL1 gene in patients with Lowe syndrome of Indian origin. These observations have implications for genetic counseling and prenatal diagnosis for families with Lowe syndrome.
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References
Nussbaum RL, Suchy SF. The oculocerebrorenal syndrome of Lowe. In: Scriver CR, Beadet AL, Sly WS, Valle D (eds) The metabolic and molecular bases of inherited diseases. New York: McGraw-Hill. 2001. pp 6257–66.
Nussbaum RL, Orrison M, Jänne P, Charnas L, Chinault A. Physical mapping and genomic structure of the Lowe syndrome gene OCRL1. Hum Genet. 1997;99:145–50.
Olivos-Glander IM, Janne PA, Nussbaum RL. The oculocerebrorenal syndrome gene product is a 105-kD protein localized to the Golgi complex. Am J Hum Genet. 1995;57:817–23.
Attree O, Olivos IM, Okabe I, Bailey LC, Nelson DL, Lewis RA, et al. The Lowe’s oculocerebrorenal syndrome gene encodes a novel protein highly homologous to inositol polyphosphate-5-phosphatase. Nature 1992;358:239–42.
Lin T, Orrison BM, Leahey AM, Suchy SF, Bernard DJ, Lewis RA, et al. Spectrum of mutations in the OCRL1 gene in the oculocerebrorenal syndrome. Am J Hum Genet. 1997;60:1384–8.
Lin T, Orrison BM, Suchy SF, Lewis RA, Nussbaum RL. Mutations are not uniformly distributed throughout the OCRL1 gene in Lowe syndrome patients. Mol Genet Metab. 1998;64:58–61.
Leahey AM, Charnas LR, Nussbaum RL. Nonsense mutations in the OCRL-1 gene in patients with the oculocerebrorenal syndrome of Lowe. Hum Mol Genet. 1993;2:461–3.
Satre V, Monnier N, Berthoin F, Ayuso C, Joannard A, Jouk PS, et al. Characterization of a germline mosaicism in families with Lowe syndrome, and identification of seven novel mutations in the OCRL1 gene. Am J Hum Genet. 1999;65:68–76.
Monnier N, Satre V, Lerouge E, Berthoin F, Lunardi J. OCRL1 mutation analysis in French Lowe syndrome patients: implications for molecular diagnosis strategy and genetic counselling. Hum Mut. 2000;16:157–65.
Addis M, Loi M, Lepiani C, Cau M, Melis MA. OCRL mutation analysis in Italian patients with Lowe syndrome. Hum Mut. 2004;23:524–5.
Loi M. Lowe syndrome. Orphanet J Rare Dis. 2006;1:16.
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Sethi, S.K., Bagga, A., Gulati, A. et al. Mutations in OCRL1 gene in Indian children with Lowe syndrome. Clin Exp Nephrol 12, 358–362 (2008). https://doi.org/10.1007/s10157-008-0059-0
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DOI: https://doi.org/10.1007/s10157-008-0059-0