Abstract
LOWE'S oculocerebrorenal syndrome1–3 (OCRL) is a human X-linked developmental disorder of unknown pathogenesis4–8 and has a pleiotropic phenotype affecting the lens, brain and kidneys. The OCRL locus has been mapped to Xq25-q26 by linkage9–11 and by finding de novoX; autosome translocations at Xq25-q26 in two unrelated females with OCRL12,13. Here we use yeast artificial chromosomes with inserts that span the X chromosomal breakpoint from a female OCRL patient in order to isolate complementary DNAs for a gene that is interrupted by the translocation. We show that the transcript is absent in both female OCRL patients with X; autosome translocations and that it is absent or abnormally sized in 9 of 13 unrelated male OCRL patients with no detectable genomic rearrangement. The open reading frame encodes a new protein with 71% similarity to human inositol polyphosphate-5-phosphatase. Our results suggest that OCRL may be an inborn error of inositol phosphate metabolism.
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Attree, O., Olivos, I., Okabe, I. et al. The Lowe's oculocerebrorenal syndrome gene encodes a protein highly homologous to inositol polyphosphate-5-phosphatase. Nature 358, 239–242 (1992). https://doi.org/10.1038/358239a0
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DOI: https://doi.org/10.1038/358239a0
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