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Kobayashi, M. et al.

Infundibulopelvic stenosis, multicystic kidney, and calyectasis in a kindred: clinical observations and genetic analysis.

Congenital obstructive anomalies of the urinary tract usually occur sporadically. We describe inheritance in a three-generation kindred of a spectrum of kidney anomalies consistent with an autosomal-dominant mode of transmission, with incomplete penetrance, calyectasis (maternal grandmother), infundibulopelvic stenosis (uncle), and multicystic kidney (male proband, age 4 years). The proband's mother, father and half sister had normal renal imaging studies. Inheritance of informative polymorphic markers (3'-HVR, GGG1, GGG9, SM-7, KG8, and CW3) mapping close to the adult polycystic kidney disease type 1 (PKD-1) and tuberous sclerosis ( TSC-2) loci on chromosome 16p was evaluated by Southern blot studies and by PCR-based, fluorescent genotyping for linkage to phenotype. The 3 affected individuals, as well as the unaffected mother (obligate carrier) and unaffected half-sister, inherit a common chromosome haplotype linked to the PKD1 locus. Our findings support the hypothesis that these anomalies may be part of a spectrum of obstructive renal dysplasia which are inherited as a simple Mendelian trait exhibiting an autosomal-dominant mode of transmission with variable expression and incomplete penetrance.[1]

References

Infundibulopelvic stenosis, multicystic kidney, and calyectasis in a kindred: clinical observations and genetic analysis. Kobayashi, M., Kaplan, B.S., Bellah, R.D., Sartore, M., Rappaport, E., Steele, M.W., Mansfield, E., Gasparini, P., Surrey, S., Fortina, P. Am. J. Med. Genet. (1995) [Pubmed]

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