This study will test the effectiveness of two medications: ACEI (angiotensin converting enzyme inhibitor)and ARB (angiotensin receptor blocker) in reducing the renal injury induced by hyperoxaluria in patients with Primary Hyperoxaluria. Hypothesis: Calcium oxalate crystal deposition in the kidney causes inflammation and resulting injury to kidney tissue. Angiotensin blockade will improve these changes, thus slowing the progression of renal insufficiency in patients with Primary Hyperoxaluria.
Name: ACEI / Angiotensin converting enzyme inhibitor
Description: Patients will be randomized to a combination of Angiotensin Converting Enzyme Inhibitor and Angiotensin Receptor Blocker, Patients will be randomized to a combination of ARB(losartan 50 mg daily in adult patients, 0.7 mg/kg/day in patients < 40 kg) ACE-I (lisinopril 10 mg daily in adult patients, 0.15 mg/kg/day in pediatric patients < 40 kg) to be taken for 24 months.Type: Drug1
Name: ARB /Angiotensin Receptor Blocker
Description: Patients will be randomized to a combination of Angiotensin Converting Enzyme Inhibitor and Angiotensin Receptor Blocker,Patients will be randomized to a combination of ARB(losartan 50 mg daily in adult patients, 0.7 mg/kg/day in patients < 40 kg) ACE-I (lisinopril 10 mg daily in adult patients, 0.15 mg/kg/day in pediatric patients < 40 kg) to be taken for 24 months.Type: Drug1
Name: Placebo
Description: Patients will receive placebo for 24 monthsType: Drug2
Allocation: Randomized
Parallel Assignment
There is one SNP
Homozygosity for the G170R mutation of AGXT h. --- G170R ---