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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT00362180
Other study ID # 301012-CS10
Secondary ID 2005-005783-90
Status Completed
Phase Phase 2
First received August 7, 2006
Last updated June 19, 2015
Start date July 2006
Est. completion date September 2010

Study information

Verified date June 2015
Source Sanofi
Contact n/a
Is FDA regulated No
Health authority Netherlands: Medical Ethics Review Committee (METC)
Study type Interventional

Clinical Trial Summary

This study will assess what, if any, effect that ISIS 301012 (mipomersen) has on liver triglyceride content in multiple groups of subjects with varying degrees of risk for hepatic steatosis. In order to enroll subject groups with varying degrees of risk, the study has included multiple cohorts (Cohorts A-G). Additions and removal of cohorts has been accomplished with protocol amendments.


Description:

This was a randomized, double-blind, placebo-controlled study to measure the effect of treatment with mipomersen on liver triglyceride (TG) content in patients with varying degrees of hyperlipidemia and risk for hepatic steatosis.

The original study design included 4 cohorts (Cohorts A through D). Subsequent protocol amendments added 3 cohorts (Cohorts E, F, and G) to the study, truncated the enrollment of Cohort D, and eliminated Cohorts B and C. The study consisted of up to a 3-week screening period; a 4-week (Cohorts A and D), 13-week (Cohort E), or 52-week (Cohort G) treatment period; and a 20-week post-treatment follow-up period. Cohort F was an observational cohort, and therefore, was not treated with study drug. Patients in this cohort underwent a 15-week Magnetic resonance spectroscopy (MRS) and ultrasound evaluation period.

The study cohorts are:

Cohort A: Healthy volunteers with LDL-C <140 mg/dL (3.6 mmol/L), serum TG <200 mg/dL (2.3 mmol/L), hemoglobin A1c (HbA1c) <6.0%, and hepatic TG content <5% (as measured by MRS at screening). Patients were randomized to mipomersen 200 mg or placebo and treated for 4 weeks.

Cohorts B+C were eliminated in a protocol amendment prior to enrolling any patients and are not discussed further.

Cohort D: In an amendment to the protocol, Cohort D was closed to enrollment. One patient had already been enrolled in the study prior to the amendment. The patient enrolled in this cohort had impaired fasting glucose (defined as fasting blood glucose >6 mmol/L and <7 mmol/L) and mixed dyslipidemia (LDL-C <215 mg/dL [5.6 mmol/L] and serum TG >200 mg/dL [2.3 mmol/L]). The patient was treated with mipomersen 200 mg for 4 weeks.

Cohort E: Patients with uncomplicated heterozygous familial hypercholesterolemia (HeFH) (Alanine aminotransferase (ALT) ≤1.5 * upper limit of normal Upper limit of normal (ULN), no evidence of insulin resistance or metabolic syndrome, and hepatic TG content <5% by MRS at screening). Patients were to remain on their baseline statin ± ezetimibe regimen but were to wash out from other lipid-lowering agents (e.g., fenofibrate, non-dietary omega-3 fatty acids, and niacin) at least 8 weeks prior to the MRS at screening. Patients were randomized to either mipomersen 200 mg or placebo for 13 weeks.

Cohort F: Patients with familial hypobetalipoproteinemia (FHBL) (a documented APOB gene mutation that results in the expression of a truncated form of apo B). Patients in this cohort were evaluated by MRS, ultrasound, and laboratory tests; however, they were not treated with mipomersen or placebo.

Cohort G: Patients with well-controlled type 2 diabetes mellitus (HbA1c ≤8.0%), hypercholesterolemia (LDL-C >100 mg/dL (2.59 mmol/L), and normal serum TG levels (≤200 mg/dL [2.26 mmol/L]). Patients were to have been on a stable dose of antidiabetic and lipid-lowering medications >3 months prior to screening and were expected to remain stable for the duration of the study. Patients were randomized to either mipomersen 200 mg or placebo for 26 weeks, followed by 26 additional weeks of mipomersen 200 mg. Recruiting difficulties caused this cohort to close early.


Recruitment information / eligibility

Status Completed
Enrollment 38
Est. completion date September 2010
Est. primary completion date March 2010
Accepts healthy volunteers Accepts Healthy Volunteers
Gender Both
Age group 18 Years to 65 Years
Eligibility Inclusion Criteria:

- Group A - are healthy subjects

- Group D - has impaired fasting glucose and mixed dyslipidemia

- Group E - has a diagnosis of Heterozygous Familial Hypercholesterolemia (HeFH) and on stable lipid-lowering therapy for 3 months

- Group F - has a diagnosis of Familial Hypobetalipoproteinemia (FHBL)

- Group G - has a diagnosis of Diabetes and hypercholesterolemia

Exclusion Criteria:

- Medical, surgical, laboratory or other conditions which in the judgment of the Physician Investigator would make the subject unsuitable for enrollment, or potentially interfere with subject participation or completion of the study.

Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Treatment


Intervention

Drug:
mipomersen
200 mg subcutaneous injections
Placebo
subcutaneous injections

Locations

Country Name City State
n/a

Sponsors (2)

Lead Sponsor Collaborator
Genzyme, a Sanofi Company Ionis Pharmaceuticals, Inc.

Country where clinical trial is conducted

Netherlands, 

References & Publications (1)

Visser ME, Akdim F, Tribble DL, Nederveen AJ, Kwoh TJ, Kastelein JJ, Trip MD, Stroes ES. Effect of apolipoprotein-B synthesis inhibition on liver triglyceride content in patients with familial hypercholesterolemia. J Lipid Res. 2010 May;51(5):1057-62. doi — View Citation

Outcome

Type Measure Description Time frame Safety issue
Primary Change From Baseline in Liver Triglyceride (TG) Content As Measured by Magnetic Resonance Spectroscopy (MRS) Localized proton MRS was used to quantify liver TG concentration. All MRS imaging of the liver was performed using the same 1.5T scanner. The instructions were to cover the entire liver (from just above the dome to just below the inferior tip) using a qualified imaging technique (Yokoo, 2009, Radiology). Liver fat quantification was performed by determining the liver fat fraction (%) derived from MRS using selected Regions of Interest (ROI). The analyst typically looked for the branching of the right portal vein and mapped slices from one scan to the next. There were typically 2 ROIs in the right lobe and 1 in the left lobe. Magnetic resonance spectroscopy imaging ROIs between different scans were selected using anatomical landmarks for both time points. Baseline, Day 26, Day 99 No
Secondary Baseline Apolipoprotein B Samples were taken following an overnight fast. Baseline No
Secondary Percent Change in Apolipoprotein B From Baseline to Day 99 Samples were taken following an overnight fast. Day 26 and Day 99 No
Secondary Baseline Low-Density Lipoprotein Cholesterol Samples were taken following overnight fast. Baseline No
Secondary Percent Change in Low-Density Lipoprotein Cholesterol From Baseline to Day 99 Samples were taken following an overnight fast. Day 26 and Day 99 No
Secondary Baseline Total Cholesterol Samples were taken following an overnight fast. Baseline No
Secondary Percent Change in Total Cholesterol From Baseline to Day 99 Samples were taken following an overnight fast. Day 26 and Day 99 No
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