Clinical Trial: An Open-label Extension Study to Assess the Long-term Safety and Efficacy of ISIS 301012 (Mipomersen) in Patients With Familial Hypercholesterolemia or Severe-Hypercholesterolemia

Study Status: Completed
Recruit Status: Completed
Study Type: Interventional

Official Title: An Open-label Extension Study to Assess the Long-term Safety and Efficacy of ISIS 301012 in Patients With Familial Hypercholesterolemia or Severe-Hypercholesterolemia

Brief Summary: To evaluate the safety and efficacy of extended dosing with mipomersen (ISIS 301012) in participants with familial hypercholesterolemia or severe hypercholesterolemia on lipid-lowering therapy who had completed either the 301012-CS5 (NCT00607373), 301012-CS7 (NCT00706849), 301012-CS17 (NCT00477594) or MIPO3500108 (NCT00794664) clinical drug trials.

Detailed Summary: All familial hypercholesterolemia (FH) or severe hypercholesterolemia participants who had tolerated the treatment regimen in Protocol 301012-CS5 (NCT00607373), 301012-CS7 (NCT00706849) or MIPO3500108 (NCT00794664) and satisfactorily completed the study through to Week 28 were eligible for participation in this open label treatment extension study for up to 4 years or until mipomersen was commercially available, whichever comes first. Consenting participants who had tolerated mipomersen and satisfactorily completed 301012-CS17 (NCT00477594) through Year 3 may also enroll for up to an additional 2 years of treatment in this study or until mipomersen was commercially available, whichever comes first. All participants, who entered the study, received 200 mg mipomersen (ISIS 301012) subcutaneously (s.c.) every week, including those who were randomized to placebo in their initial study. Participants who were originally enrolled in Protocol 301012-CS5 (NCT00607373) and weighed <50 kg received 160 mg every week. Dose adjustments (70 mg injections administered three times per week, on separate days) were allowed for participants who were not tolerating or who had previous issues with tolerating the once a week injections due to injection site reactions (ISRs) or flu-like symptoms. Study visits and clinical lab assessments including hematology with differential, chemistry, serum lipid panel (total cholesterol, LDL-C, very low density lipoprotein cholesterol (VLDL-C), high density lipoprotein cholesterol (HDL-C), apolipoprotein B (apoB), apoA-1, triglycerides (TG) and Lp(a), and urinalysis was to be performed every 4-10 weeks during the treatment period. Plasma trough mipomersen (ISIS 301012) levels was to be measured to estimate exposure. Participants who completed dosing or who discontinued prematurely from the study for any reason was followed for safety for 24 weeks (safety follow-up period) after their last dose of mipomersen (ISIS 301012) or longer in the case of a s
Sponsor: Kastle Therapeutics, LLC

Current Primary Outcome:

  • Percent Change From Baseline in Low Density Lipoprotein Cholesterol (LDL-C) [ Time Frame: Baseline up to Week 234; 24 weeks post treatment (up to 4.5 years) ]
    Baseline was defined as the last value prior to receiving the first dose of mipomersen in this study (for participants randomized to placebo in their index study and for participants randomized to mipomersen in their index study and their first dose of mipomersen in this study was administered >=6 months from their last dose of mipomersen in their index study), or the last value prior to receiving the first dose of mipomersen in their index study (for participants randomized to mipomersen in their index study and their first dose of mipomersen in this study was administered <6 months from their last dose of mipomersen in their index study).
  • Percent Change From Baseline in Apolipoprotein B (Apo B) [ Time Frame: Baseline up to Week 234; 24 weeks post treatment (up to 4.5 years) ]
    Baseline was defined as the last value prior to receiving the first dose of mipomersen in this study (for participants randomized to placebo in their index study and for participants randomized to mipomersen in their index study and their first dose of mipomersen in this study was administered >=6 months from their last dose of mipomersen in their index study), or the last value prior to receiving the first dose of mipomersen in their index study (for participants randomized to mipomersen in their index study and their first dose of mipomersen in this study was administered <6 months from their last dose of mipomersen in their index study).
  • Percent Change From Baseline in Total Cholesterol [ Time Frame: Baseline up to Week

    Original Primary Outcome: To evaluate the safety and efficacy of extended dosing with ISIS 301012 in subjects with familial hypercholesterolemia on lipid-lowering therapy [ Time Frame: Through 26 weeks of treatment and through 24 weeks of follow up ]

    Current Secondary Outcome:

    • Percent Change From Baseline in Triglycerides [ Time Frame: Baseline up to Week 234; 24 weeks post treatment (up to 4.5 years) ]
      Baseline was defined as the last value prior to receiving the first dose of mipomersen in this study (for participants randomized to placebo in their index study and for participants randomized to mipomersen in their index study and their first dose of mipomersen in this study was administered >=6 months from their last dose of mipomersen in their index study), or the last value prior to receiving the first dose of mipomersen in their index study (for participants randomized to mipomersen in their index study and their first dose of mipomersen in this study was administered <6 months from their last dose of mipomersen in their index study).
    • Percent Change From Baseline in Lipoprotein (a) [ Time Frame: Baseline up to Week 234; 24 weeks post treatment (up to 4.5 years) ]
      Baseline was defined as the last value prior to receiving the first dose of mipomersen in this study (for participants randomized to placebo in their index study and for participants randomized to mipomersen in their index study and their first dose of mipomersen in this study was administered >=6 months from their last dose of mipomersen in their index study), or the last value prior to receiving the first dose of mipomersen in their index study (for participants randomized to mipomersen in their index study and their first dose of mipomersen in this study was administered <6 months from their last dose of mipomersen in their index study).
    • Percent Change From Baseline in LDL Particles' Size (Total) [ Time Frame: Baseline up to End of treatment; 24 weeks post treatment (up to 4.5 years) ]
      Baseline was defined as the last value prior to receiving the first dose of mipomersen in this study (for participants randomized to placebo in their index study and for participants randomized to mipomersen in their index study and their first dose of mipomersen in this study was administered >=6 months from their last dose of mipomersen in their index study), or the last value prior to receiving the first dose of mipomersen in their index study (for participants randomized to mipomersen in their index study and their first dose of mipomersen in this study was administered <6 months from their last dose of mipomersen in their index study).
    • Percent Change From Baseline in LDL Particles' Size (Large) [ Time Frame: Baseline up to End of treatment; 24 weeks post treatment (up to 4.5 years) ]
      Baseline was defined as the last value prior to receiving the first dose of mipomersen in this study (for participants randomized to placebo in their index study and for participants randomized to mipomersen in their index study and their first dose of mipomersen in this study was administered >=6 months from their last dose of mipomersen in their index study), or the last value prior to receiving the first dose of mipomersen in their index study (for participants randomized to mipomersen in their index study and their first dose of mipomersen in this study was administered <6 months from their last dose of mipomersen in their index study).
    • Percent Change From Baseline in LDL Particles' Size (Medium) [ Time Frame: Baseline up to End of treatment; 24 weeks post treatment (up to 4.5 years) ]
      Baseline was defined as the last value prior to receiving the first dose of mipomersen in this study (for participants randomized to placebo in their index study and for participants randomized to mipomersen in their index study and their first dose of mipomersen in this study was administered >=6 months from their last dose of mipomersen in their index study), or the last value prior to receiving the first dose of mipomersen in their index study (for participants randomized to mipomersen in their index study and their first dose of mipomersen in this study was administered <6 months from their last dose of mipomersen in their index study).
    • Percent Change From Baseline in LDL Particles' Size (Small) [ Time Frame: Baseline up to End of treatment; 24 weeks post treatment (up to 4.5 years) ]
      Baseline was defined as the last value prior to receiving the first dose of mipomersen in this study (for participants randomized to placebo in their index study and for participants randomized to mipomersen in their index study and their first dose of mipomersen in this study was administered >=6 months from their last dose of mipomersen in their index study), or the last value prior to receiving the first dose of mipomersen in their index study (for participants randomized to mipomersen in their index study and their first dose of mipomersen in this study was administered <6 months from their last dose of mipomersen in their index study).
    • Percent Change From Baseline in LDL Particles' Size (Very Small) [ Time Frame: Baseline up to End of treatment; 24 weeks post treatment (up to 4.5 years) ]
      Baseline was defined as the last value prior to receiving the first dose of mipomersen in this study (for participants randomized to placebo in their index study and for participants randomized to mipomersen in their index stud

      Original Secondary Outcome:

      Information By: Kastle Therapeutics, LLC

      Dates:
      Date Received: June 5, 2008
      Date Started: April 2008
      Date Completion:
      Last Updated: August 1, 2016
      Last Verified: August 2016