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  • Title: International phase III trial of liprotamase efficacy and safety in pancreatic-insufficient cystic fibrosis patients.
    Author: Borowitz D, Stevens C, Brettman LR, Campion M, Chatfield B, Cipolli M, Liprotamase 726 Study Group.
    Journal: J Cyst Fibros; 2011 Dec; 10(6):443-52. PubMed ID: 21831726.
    Abstract:
    BACKGROUND: Most cystic fibrosis (CF) patients have exocrine pancreatic insufficiency (EPI) and need supplementation with pancreatic enzyme replacement therapy (PERT). Liprotamase, a novel non-porcine PERT containing highly purified biotechnology-derived lipase, protease, and amylase, has successfully undergone initial efficacy and safety testing. METHODS: In this international phase III parallel-group, randomized-withdrawal, double-blind placebo-controlled trial, CF patients with EPI 7 years and older, including nutritionally and functionally compromised individuals, underwent baseline testing for coefficients of fat and nitrogen absorption (CFA and CNA) and stool weight and frequency while off PERT. After an open-label treatment period with liprotamase, subjects were randomized 1:1 to one liprotamase or placebo capsule taken with 3 meals and 2 snacks per day. The dose was fixed and increases were not allowed. The same measurements were obtained again after treatment with double-blind study drug or placebo. RESULTS: 138 subjects were randomized. The adjusted least squares mean (LSM) difference between the treatment and placebo groups for change in CFA was 15.1% (p=0.001) for the subgroup with baseline CFA <40%, 8.6% (p=0.006) for subjects with baseline CFA ≥40%, and 10.6% (p<0.001) for the overall intent-to-treat population. Similar results were seen for change in CNA. Stool weight was significantly decreased although not stool frequency. Liprotamase was well tolerated with no safety concerns identified. CONCLUSIONS: In a CF patient population reflective of that encountered in clinical practice, this trial demonstrated that liprotamase at a fixed dose of one capsule per meal or snack (5 capsules per day) was well tolerated and significantly increased fat absorption as measured by improvement in CFA, significantly increased protein absorption as measured by improvement in CNA, and significantly decreased stool weight.
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