We report a new X-linked recessive nephrolithiasis kindred. X-linked r
ecessive nephrolithiasis is a recently described disease characterized
by recurrent nephrolithiasis, nephrocalcinosis, and progressive renal
failure, associated with mutations in a renal chloride channel gene,
chloride channel number 5. Screening individuals at. risk with renal u
ltrasonography and measurement of urinary excretion of low molecular w
eight proteins and calcium will exclude boys without X-linked recessiv
e nephrolithiasis kindred and identify boys likely to have the disease
.