The purpose of this study is to determine the natural history of the hereditary forms of
nephrolithiasis and chronic kidney disease (CKD), primary hyperoxaluria (PH), cystinuria,
Dent disease and adenine phosphoribosyltransferase deficiency (APRTd) and acquired enteric
hyperoxaluria (EH). The investigator will measure blood and urinary markers of inflammation
and determine relationship to the disease course. Cross-comparisons among the disorders will
allow us to better evaluate mechanisms of renal dysfunction in these disorders.