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Title: Long-term treatment with mammalian target of rapamycin inhibitor does not benefit patients with autosomal dominant polycystic kidney disease: a meta-analysis.
Author: Xue C, Dai B, Mei C.
Journal: Nephron Clin Pract; 2013; 124(1-2):10-6. PubMed ID: 24022660.
Abstract:
BACKGROUND: The role of the mammalian target of rapamycin (mTOR) inhibition in the treatment of autosomal dominant polycystic kidney disease (ADPKD) remains unclear. This meta-analysis included all randomized controlled trials (RCTs) that used mTOR inhibitors (TORIs) to halt the progression of ADPKD. METHODS: Databases including MEDLINE, EMBASE, and the Cochrane Library were searched to find relevant trials. RCTs of TORI treatment in patients with ADPKD were included. Effects on the primary outcome [total kidney volume (TKV)] and secondary outcomes [changes in cyst volume (CV) and parenchymal volume (PV), glomerular filtration rate (GFR), proteinuria, and adverse events] were analyzed. RESULTS: The results of 5 RCTs, which included 619 patients, were analyzed. TORIs did not significantly reduce TKV [mean difference (WMD) -90.01 ml, 95% CI -235.49 to 55.47, p = 0.23; I(2) = 0%; p for heterogeneity = 0.67]. CV decreased after TORI treatment (WMD -15.08 ml, 95% CI -17.82 to -12.34, p < 0.00001), and PV did not change (WMD -0.55 ml, 95% CI -64.55 to 63.45, p = 0.99). There was no significant difference in GFR between the TORI-treated and control groups (WMD 4.94 ml/min, 95% CI -0.81 to 10.68, p = 0.09). Proteinuria was significantly higher in the TORI-treated group than in the control group (standard mean difference 0.27, 95% CI 0.09-0.44, p = 0.002). CONCLUSION: Long-term treatment with TORIs does not benefit patients with ADPKD.

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