Colesevelam added to combination therapy with a statin and ezetimibe in patients with familial hypercholesterolemia: a 12-week, multicenter, randomized, double-blind, controlled trial.
until further notice
SourceClinical Therapeutics, 32, 4, (2010), pp. 615-25
01 april 2010
Article / Letter to editor
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SubjectNCEBP 6: Quality of nursing and allied health care
BACKGROUND: Familial hypercholesterolemia (FH) has been associated with increased cardiovascular risk when untreated or when normal LDL-C concentrations are not reached. Some patients with FH do not reach LDL-C goals despite intensive combination therapy. OBJECTIVE: This study assessed the efficacy and tolerability of colesevelam added to maximally tolerated, stable-dose combination treatment with a statin + ezetimibe. METHODS: This Phase IV, multicenter, randomized, double-blind, placebo-controlled trial enrolled patients aged 18 to 75 years with FH and an LDL-C concentration >2.5 mmol/L who were receiving a maximally tolerated and stable regimen of a statin + ezetimibe. Patients were randomly assigned to receive colesevelam 3.75 g/d or placebo added to the statin + ezetimibe for 12 weeks. The primary efficacy outcome was the difference in LDL-C between the colesevelam and placebo groups after 6 weeks. Secondary efficacy outcomes were between-group differences in LDL-C, total cholesterol (TC), HDL-C, triglyceride (Tg), apolipoprotein (apo) B, and apoA-I concentrations, as well as apoB/apoA-I ratio after 12 weeks. Tolerability was assessed based on the prevalences of adverse events by organ system class in each treatment group. RESULTS: Eighty-six patients were randomized (45 colesevelam, 41 placebo), of whom 84 (44 colesevelam, 40 placebo) were included in the primary analysis. The mean (SD) age of the participants was 52.8 (10.8) years, and 51 (59%) were men. The difference (95% CI) in LDL-C between colesevelam and placebo after 6 weeks was -18.5% (-25.3 to -11.8). Between-group differences in LDL-C, TC, HDL-C, Tg, and apoB/apoA-I ratio after 12 weeks were -12.0% (-17.8 to -6.3), -7.3% (-12.0 to -2.6), +3.3% (-2.4 to +9.0), +2.8% (-10.4 to +15.9), and -12.2% (-20.2 to -4.2), respectively. Colesevelam was generally well tolerated, with gastrointestinal adverse events in 12 of 45 patients (27%) versus 7 of 40 (18%) in the placebo group (P = NS). CONCLUSION: In these patients with FH, colesevelam added to a combination of a statin + ezetimibe was associated with significantly improved LDL-C concentrations compared with placebo during the 12-week study period and was generally well tolerated.
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