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J Pediatr. 2009 Jul;155(1):94-9. doi: 10.1016/j.jpeds.2009.01.049.

Dent-2 disease: a mild variant of Lowe syndrome.

Author information

1
Department of Pediatrics, VU University Medical Center, Amsterdam, The Netherlands. bokenkamp@vumc.nl

Abstract

OBJECTIVE:

To compare the renal and extra-renal phenotypes of patients classified as having Dent disease, Dent-2 disease, or Lowe syndrome.

STUDY DESIGN:

Chart review of data from 93 patients with identified voltage-gated chloride channel and chloride/proton antiporter 5 gene and oculo-cerebro-renal syndrome of Lowe gene mutations observed by the authors, complemented with published data.

RESULTS:

There was a wide overlap of renal symptoms. Nephrocalcinosis was more prevalent in Dent-1 disease, and renal tubular acidosis, aminoaciduria, and renal failure was more prevalent in patients with Lowe syndrome. Patients with Lowe syndrome were shorter than patients with Dent-1 disease, and patients with Dent-2 disease showed an intermediate phenotype. Three patients with Dent-2 disease had mild peripheral cataract, and 9 patients were noted to have some degree of mental retardation.

CONCLUSION:

There is a phenotypic continuum within patients with Dent-2 disease and Lowe syndrome, suggesting that there are individual differences in the ability to compensate for loss of oculo-cerebro-renal syndrome of Lowe gene function.

PMID:
19559295
DOI:
10.1016/j.jpeds.2009.01.049
[Indexed for MEDLINE]

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