Phase 2 Study of ISIS 681257 (AKCEA-APO(a)-LRx) in Participants With Hyperlipoproteinemia(a) and Cardiovascular Disease
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ClinicalTrials.gov Identifier: NCT03070782 |
Recruitment Status :
Completed
First Posted : March 6, 2017
Results First Posted : October 30, 2020
Last Update Posted : October 30, 2020
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Condition or disease | Intervention/treatment | Phase |
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Elevated Lipoprotein(a) Cardiovascular Disease | Drug: ISIS 681257 Drug: Placebo | Phase 2 |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 286 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Triple (Participant, Investigator, Outcomes Assessor) |
Primary Purpose: | Treatment |
Official Title: | A Randomized, Double-blind, Placebo-Controlled, Dose-Ranging Phase 2 Study of ISIS 681257 (AKCEA-APO(a)-LRx) Administered Subcutaneously to Patients With Hyperlipoproteinemia(a) and Established Cardiovascular Disease (CVD) |
Actual Study Start Date : | March 7, 2017 |
Actual Primary Completion Date : | July 26, 2018 |
Actual Study Completion Date : | November 13, 2018 |
Arm | Intervention/treatment |
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Experimental: Cohort A: ISIS 681257: 20 mg Q4W
Cohort A participants received 20 milligrams (mg) ISIS 681257, subcutaneous (SC) injection, once every 4 weeks (Q4W), for up to 49 weeks and a maximum of 13 doses.
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Drug: ISIS 681257
ISIS 681257 solution for SC injection.
Other Name: AKCEA-APO(a)-LRx, IONIS-APO(a)-LRx, TQJ230 and Pelacarsen |
Experimental: Cohort B: ISIS 681257: 40 mg Q4W
Cohort B participants received 40 mg of ISIS 681257, SC injection, once Q4W, for up to 49 weeks and a maximum of 13 doses.
|
Drug: ISIS 681257
ISIS 681257 solution for SC injection.
Other Name: AKCEA-APO(a)-LRx, IONIS-APO(a)-LRx, TQJ230 and Pelacarsen |
Experimental: Cohort C: ISIS 681257: 60 mg Q4W
Cohort C participants received 60 mg of ISIS 681257, SC injection, once Q4W, for up to 49 weeks and a maximum of 13 doses.
|
Drug: ISIS 681257
ISIS 681257 solution for SC injection.
Other Name: AKCEA-APO(a)-LRx, IONIS-APO(a)-LRx, TQJ230 and Pelacarsen |
Experimental: Cohort D: ISIS 681257: 20 mg Q2W
Cohort D participants received 20 mg of ISIS 681257, SC injection, once every 2 weeks (Q2W), for up to 51 weeks and a maximum of 26 doses.
|
Drug: ISIS 681257
ISIS 681257 solution for SC injection.
Other Name: AKCEA-APO(a)-LRx, IONIS-APO(a)-LRx, TQJ230 and Pelacarsen |
Experimental: Cohort E: ISIS 681257: 20 mg QW
Cohort E participants received 20 mg of ISIS 681257, SC injection, once weekly (QW), for up to 52 weeks and a maximum of 52 doses.
|
Drug: ISIS 681257
ISIS 681257 solution for SC injection.
Other Name: AKCEA-APO(a)-LRx, IONIS-APO(a)-LRx, TQJ230 and Pelacarsen |
Placebo Comparator: Placebo
Participants in each cohort were randomized to receive placebo at a dose-matched volume of study drug (ISIS 681257).
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Drug: Placebo
Sterile normal saline (0.9% NaCl) |
- Percent Change From Baseline in Fasting Lipoprotein A [Lp(a)] at the Primary Analysis Time Point [ Time Frame: Baseline and Month 6 (Week 25 for Cohorts A, B and C and Week 27 for Cohorts D and E) ]An ANCOVA model was performed on the log ratio of Lp(a) value at the Primary Analysis Time Point to Lp(a) value at Baseline. The estimate of the log ratio was converted back to the original scale and percent change was calculated using formula: = (ratio of Lp(a) value at the Primary Analysis Time Point to Lp(a) value at Baseline - 1) × 100.
- Number of Participants With Treatment Emergent Adverse Events (TEAEs) [ Time Frame: Up to 16 weeks post treatment period (up to approximately 1.3 years) ]An adverse event (AE) was defined as any unfavorable and unintended sign (including a clinically significant abnormal laboratory finding), symptom, or disease temporally associated with the study or use of investigational drug product, whether or not the AE was considered related to the investigational drug product. TEAEs was defined as any AE with onset after the first administration of study medication through the end of the study, or any event that was present at baseline but worsened in intensity or was subsequently considered drug-related by the Investigator through the end of the study.
- Number of Participants With TEAEs by Maximum Severity [ Time Frame: Up to 16 weeks post treatment period (up to approximately 1.3 years) ]An AE was defined as any unfavorable and unintended sign (including a clinically significant abnormal laboratory finding), symptom, or disease temporally associated with the study or use of investigational drug product, whether or not the AE was considered related to the investigational drug product. TEAEs was defined as any AE with onset after the first administration of study medication through the end of the study, or any event that was present at baseline but worsened in intensity or was subsequently considered drug-related by the Investigator through the end of the study. The severity of TEAEs was assessed based on the National Cancer Institute's (NCI) Common Terminology Criteria for Adverse Events (CTCAE) version 4.03. TEAEs were graded on a 5-point scale where 1 = Mild, 2 = Moderate, 3 = Severe, 4 = Potentially life-threatening and 5 = Death.
- Number of Participants With TEAEs Leading to Study Discontinuation [ Time Frame: Up to 16 weeks post treatment period (up to approximately 1.3 years) ]An AE was defined as any unfavorable and unintended sign (including a clinically significant abnormal laboratory finding), symptom, or disease temporally associated with the study or use of investigational drug product, whether or not the AE was considered related to the investigational drug product. TEAE was defined as any AE with onset after the first administration of study medication through the end of the study, or any event that was present at baseline but worsened in intensity or was subsequently considered drug-related by the Investigator through the end of the study.
- Percent Change From Baseline in Fasting Low-Density Lipoprotein Cholesterol (LDL-C) [ Time Frame: Baseline and Month 6 (Week 25 for Cohorts A, B and C and Week 27 for Cohorts D and E) ]An ANCOVA model was performed on the log ratio of LDL-C value at the Primary Analysis Time Point to LDL-C value at Baseline. The estimate of the log ratio was converted back to the original scale and percent change was calculated using formula: = (ratio of LDL-C value at the Primary Analysis Time Point to LDL-C value at Baseline - 1) × 100.
- Percentage of Participants Who Achieved Plasma Lp(a) ≤ 125 Nanomoles Per Liter (Nmol/L) or ≤ 50 Milligrams Per Deciliter (mg/dL) [ Time Frame: Baseline and Month 6 (Week 25 for Cohorts A, B and C and Week 27 for Cohorts D and E) ]The percentage of participants who achieved ≤ 125 nmol/L or ≤ 50 mg/dL in fasting Lp(a) at the primary analysis time point were compared between each ISIS 681257 treatment group and pooled placebo group using a logistic regression model with log-transformed baseline Lp(a) as a covariate.
- Percentage of Participants Who Achieved Plasma Lp(a) ≤ 75 Nmol/L or ≤ 30 mg/dL [ Time Frame: Baseline and Month 6 (Week 25 for Cohorts A, B and C and Week 27 for Cohorts D and E) ]The percentage of participants who achieved ≤ 75 nmol/L or ≤ 30 mg/dL in fasting Lp(a) at the primary analysis time point were compared between each ISIS 681257 treatment group and pooled placebo group using a logistic regression model with log-transformed baseline Lp(a) as a covariate.
- Percent Change From Baseline in the Plasma Levels of Apolipoprotein B (apoB) [ Time Frame: Baseline and Month 6 (Week 25 for Cohorts A, B and C and Week 27 for Cohorts D and E) ]An ANCOVA model was performed on the log ratio of apoB value at the Primary Analysis Time Point to apoB value at Baseline. The estimate of the log ratio was converted back to the original scale and percent change was calculated using formula: = (ratio of apoB value at the Primary Analysis Time Point to apoB value at Baseline - 1) × 100.
- Percent Change From Baseline in the Plasma Levels of Oxidized Phospholipids (OxPL) on Apolipoprotein(a) [OxPL-apo(a)] [ Time Frame: Baseline and Month 6 (Week 25 for Cohorts A, B and C and Week 27 for Cohorts D and E) ]An ANCOVA model was performed on the log ratio of OxPL-apo(a) value at the Primary Analysis Time Point to OxPL-apo(a) value at Baseline. The estimate of the log ratio was converted back to the original scale and percent change was calculated using formula: = (ratio of OxPL-apo(a) value at the Primary Analysis Time Point to OxPL-apo(a) value at Baseline - 1) × 100.
- Percent Change From Baseline in the Plasma Levels of Oxidized Phospholipids (OxPL) on Apolipoprotein B (OxPL-apoB) [ Time Frame: Baseline and Month 6 (Week 25 for Cohorts A, B and C and Week 27 for Cohorts D and E) ]An ANCOVA model was performed on the log ratio of OxPL-apoB value at the Primary Analysis Time Point to OxPL-apoB value at Baseline. The estimate of the log ratio was converted back to the original scale and percent change was calculated using formula: = (ratio of OxPL-apoB value at the Primary Analysis Time Point to OxPL-apoB value at Baseline - 1) × 100.
- To Evaluate Plasma Cmax of ISIS 681257 Across Different Doses and Dose Regimens. [ Time Frame: 6 months ]Cmax will be calculated for the treatment groups.
- To Evaluate Plasma Tmax of ISIS 681257 Across Different Doses and Dose Regimens. [ Time Frame: 6 months ]Tmax will be calculated for the treatment groups.
- To Evaluate Plasma AUC Values of ISIS 681257 Across Different Doses and Dose Regimens. [ Time Frame: 6 months ]AUC values will be calculated for the treatment groups.

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 18 Years to 80 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Key Inclusion Criteria:
- Clinical diagnosis of CVD defined as documented coronary artery disease, stroke, or peripheral artery disease
- Lp(a) plasma level ≥ 60 mg/dL
- Must be on standard-of-care preventative therapy for other than elevated Lp(a) CVD risk factors
Key Exclusion Criteria:
- Within 6 months of Screening: acute coronary syndrome, major cardiac surgery, or stroke/TIA
- Within 3 months of Screening: coronary, carotid, or peripheral arterial revascularization, major non-cardiac surgery, or lipoprotein apheresis
- Heart failure New York Heart Association (NYHA) class IV

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03070782
United States, Arizona | |
Clinical Site | |
Cottonwood, Arizona, United States, 86326 | |
United States, California | |
Clinical Site | |
Huntington Beach, California, United States, 92648 | |
Clinical Site | |
La Jolla, California, United States, 92103 | |
Clinical Site | |
Los Angeles, California, United States, 90048 | |
Clinical Site | |
Stanford, California, United States, 94305 | |
United States, Colorado | |
Clinical Site | |
Colorado Springs, Colorado, United States, 80909 | |
United States, Florida | |
Clinical Site | |
Boca Raton, Florida, United States, 33434 | |
Clinical Site | |
Jacksonville, Florida, United States, 32216 | |
United States, Kansas | |
Clinical Site | |
Kansas City, Kansas, United States, 66160 | |
United States, Maryland | |
Clinical Site | |
Baltimore, Maryland, United States, 21201 | |
United States, Massachusetts | |
Clinical Site | |
Boston, Massachusetts, United States, 02114 | |
United States, New York | |
Clinical Site | |
Cooperstown, New York, United States, 13326 | |
Clinical Site | |
New York, New York, United States, 10016 | |
Clinical Site | |
New York, New York, United States, 10029 | |
United States, Ohio | |
Clinical Site | |
Cleveland, Ohio, United States, 44195 | |
United States, Oregon | |
Clinical Site | |
Portland, Oregon, United States, 97239 | |
United States, Pennsylvania | |
Clinical Site | |
Lancaster, Pennsylvania, United States, 17602 | |
Clinical Site | |
Philadelphia, Pennsylvania, United States, 19104 | |
United States, Rhode Island | |
Clinical Site | |
Providence, Rhode Island, United States, 02906 | |
United States, Texas | |
Clinical Site | |
Houston, Texas, United States, 77030 | |
United States, Virginia | |
Clinical Site | |
Falls Church, Virginia, United States, 22042 | |
United States, Wisconsin | |
Clinical Site | |
Milwaukee, Wisconsin, United States, 53215 | |
Canada, Quebec | |
Clinical Site | |
Chicoutimi, Quebec, Canada, G7H7K9 | |
Clinical Site | |
Montreal, Quebec, Canada, H1T 1C8 | |
Clinical Site | |
Montréal, Quebec, Canada, H3H 2L9 | |
Clinical Site | |
Québec, Quebec, Canada, G1V4W2 | |
Canada | |
Clinical Site | |
Ottawa, Canada, K1Y4W7 | |
Denmark | |
Clinical Site | |
Herlev, Denmark, 2730 | |
Clinical Site | |
Viborg, Denmark, 8800 | |
Germany | |
Clinical Site | |
Berlin, Germany, 13353 | |
Clinical Site | |
Cologne, Germany, 50937 | |
Netherlands | |
Clinical Site | |
Amsterdam, Netherlands, 1105AZ |
Documents provided by Akcea Therapeutics:
Responsible Party: | Akcea Therapeutics |
ClinicalTrials.gov Identifier: | NCT03070782 |
Other Study ID Numbers: |
ISIS 681257-CS6 2016-003373-18 ( EudraCT Number ) |
First Posted: | March 6, 2017 Key Record Dates |
Results First Posted: | October 30, 2020 |
Last Update Posted: | October 30, 2020 |
Last Verified: | October 2020 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
IONIS-APO(a)-LRx AKCEA-APO(a)-LRx Hyperlipoproteinemia(a) Hyperlipoproteinemia a Lipoprotein(a) Lipoprotein a Lp(a) |
Lp a Dyslipidemia Dyslipoproteinemia Hyperlipidemia Hyperlipoproteinemia Lipoprotein |
Cardiovascular Diseases Hyperlipoproteinemias Hyperlipidemias |
Dyslipidemias Lipid Metabolism Disorders Metabolic Diseases |