Trial to Evaluate the Effect of ALN-PCSSC Treatment on Low Density Lipoprotein Cholesterol (LDL-C) (ORION-1)
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ClinicalTrials.gov Identifier: NCT02597127 |
Recruitment Status :
Completed
First Posted : November 5, 2015
Results First Posted : May 17, 2019
Last Update Posted : May 17, 2019
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Condition or disease | Intervention/treatment | Phase |
---|---|---|
Atherosclerotic Cardiovascular Disease Familial Hypercholesterolemia Diabetes | Drug: ALN-PCSSC Drug: Normal Saline | Phase 2 |

Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 501 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Double (Participant, Investigator) |
Primary Purpose: | Treatment |
Official Title: | A Placebo-controlled, Double-blind, Randomized Trial to Compare the Effect of Different Doses of ALN-PCSSC Given as Single or Multiple Subcutaneous Injections in Subjects With High Cardiovascular Risk and Elevated LDL-C |
Study Start Date : | January 2016 |
Actual Primary Completion Date : | June 7, 2017 |
Actual Study Completion Date : | June 7, 2017 |

Arm | Intervention/treatment |
---|---|
Experimental: ALN-PCSSC 200 mg (bi-annual dosing)
ALN-PCSSC 200 milligram (mg) SC administration once at Day 1
|
Drug: ALN-PCSSC
ALN-PCSSC is a small interfering ribonucleic acid (RNA) that inhibits PCSK9 synthesis and is given as SC injections
Other Names:
|
Experimental: ALN-PCSSC 300 mg (bi-annual dosing)
ALN-PCSSC 300 mg SC administration once at Day 1
|
Drug: ALN-PCSSC
ALN-PCSSC is a small interfering ribonucleic acid (RNA) that inhibits PCSK9 synthesis and is given as SC injections
Other Names:
|
Experimental: ALN-PCSSC 500 mg (bi-annual dosing)
ALN-PCSSC 500 mg SC administration once at Day 1
|
Drug: ALN-PCSSC
ALN-PCSSC is a small interfering ribonucleic acid (RNA) that inhibits PCSK9 synthesis and is given as SC injections
Other Names:
|
Placebo Comparator: Normal Saline (bi-annual dosing)
Saline SC administration once at Day 1
|
Drug: Normal Saline
Saline (sterile, normal, 0.9%) solution given as SC injections |
Experimental: ALN-PCSSC 100 mg (quarterly dosing)
ALN-PCSSC 100 mg SC administration twice at Day 1 and Day 90
|
Drug: ALN-PCSSC
ALN-PCSSC is a small interfering ribonucleic acid (RNA) that inhibits PCSK9 synthesis and is given as SC injections
Other Names:
|
Experimental: ALN-PCSSC 200 mg (quarterly dosing)
ALN-PCSSC 200 mg SC administration twice at Day 1 and Day 90
|
Drug: ALN-PCSSC
ALN-PCSSC is a small interfering ribonucleic acid (RNA) that inhibits PCSK9 synthesis and is given as SC injections
Other Names:
|
Experimental: ALN-PCSSC 300 mg (quarterly dosing)
ALN-PCSSC 300 mg SC administration twice at Day 1 and Day 90
|
Drug: ALN-PCSSC
ALN-PCSSC is a small interfering ribonucleic acid (RNA) that inhibits PCSK9 synthesis and is given as SC injections
Other Names:
|
Placebo Comparator: Normal Saline (quarterly dosing)
Saline SC administration twice at Day 1 and Day 90
|
Drug: Normal Saline
Saline (sterile, normal, 0.9%) solution given as SC injections |
- Percentage Change in LDL-C From Baseline to Day 180 [ Time Frame: Baseline to 180 days ]Percent Change in LDL-C (beta-quantification) from Baseline to Day 180 in MITT Population
- Percentage Change in LDL-C From Baseline to Day 90 [ Time Frame: Baseline to 90 days ]Percent Change in LDL-C (beta-quantification) from Baseline to Day 90 in MITT Population
- Percent Change From Baseline In LDL-C Levels At Day 60, Day 120, and Day 210 [ Time Frame: Baseline, Day 60, Day 120, and Day 210 ]This outcome measure evaluated the effects of both single- and double-dose inclisiran on LDL-C levels in the mITT population from baseline to Day 60, Day 120, and Day 210.
- Number of Participants With an LDL-C Greater Than 80% of the Baseline Value at Day 180 and Day 210 [ Time Frame: Baseline, Day 180, Day 210 ]This outcome measure evaluated the number of participants (single and double dose) in the mITT population with an LDL-C greater than 80% of the baseline value at Day 180 and Day 210.
- Number of Participants With Individual Responsiveness as Measured By LDL-C Levels at Day 90 and Day 180 [ Time Frame: Day 90, Day 180 ]This outcome measure evaluated the individual responsiveness of participants to inclisiran (single and double dose) in the mITT population as defined by an LDL-C level of <25 mg/deciliter [dL] at Day 90 and Day 180.
- Number of Participants With Greater Or Equal To 50% LDL-C Reduction From Baseline At Day 180 [ Time Frame: Baseline, Day 180 ]This outcome measure evaluated the number of participants (single and double dose) in the mITT population with an LDL-C reduction greater than 50% of the baseline value at Day 180.
- Percentage Change in PCSK9 Levels From Baseline at Day 180 [ Time Frame: Baseline, Day 180 ]This outcome measure evaluated the percent change in proprotein convertase subtilisin/kexin type 9 (PCSK9) from baseline to Day 180 in participants (single and double dose) in the mITT population.
- Percentage Change in Other Lipids and Apolipoproteins From Baseline to Day 180 [ Time Frame: Baseline, Day 180 ]This outcome measure evaluated the percent change from baseline to Day 180 in cholesterol (total, high-density lipoprotein [HDL], non-HDL) and apolipoproteins (B, A1) in participants (single and double dose) in the mITT population.
- Number of Participants Who Attained Global Lipid Modification Targets for Level of Atherosclerotic Cardiovascular Disease Risk [ Time Frame: Baseline, Day 180 ]
This outcome measure evaluated the proportion of participants (single and double dose) in the mITT population who attained a global lipid modification target by baseline cardiovascular risk group, looking specifically at LDL-C levels (mg/dL) in the category of cardiovascular disease (CVD).
CVD was defined as a participant who had at least 1 of the following: prior myocardial infarction, prior percutaneous coronary intervention, prior coronary artery bypass graft, prior stroke, prior transient ischemic attack, peripheral artery disease.
- Percentage Change in Other Lipids and Inflammatory Markers From Baseline to Day 180 [ Time Frame: Baseline, Day 180 ]This outcome measure evaluated the percent change from baseline to Day 180 in triglycerides, very-low-density lipoprotein (VLDL) cholesterol, lipoprotein(a), and high sensitivity C-reactive protein (hsCRP) in participants (single and double dose) in the mITT population.

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Ages Eligible for Study: | 18 Years to 99 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Male or female participants ≥18 years of age.
- History of ASCVD or ASCVD-risk equivalents (symptomatic atherosclerosis, Type 2 diabetes, familial hypercholesterolemia, including participants whose 10-year risk of a CV event assessed by Framingham Risk Score (Framingham Risk Score >20%) or equivalent has a target LDL-C of <100 mg/deciliter [dL]).
- Serum LDL-C ≥1.8 millimole (mmol)/liter (L) (≥70 mg/dL) for ASCVD participants or ≥2.6 mmol/L (≥100 mg/dL) for ASCVD-risk equivalent participants at screening.
- Fasting triglyceride <4.52 mmol/L (<400 mg/dL) at screening.
- Calculated glomerular filtration rate 30 mL/min or higher by estimated glomerular filtration rate (eGFR) using standardized local clinical methodology.
- Participants on statins should be receiving a maximally tolerated dose (investigator's discretion).
- Participants on lipid-lower therapies (such as statin and/or ezetimibe) should be on a stable dose for ≥30 days before screening with no planned medication or dose change during study participation.
- Willing and able to give informed consent before initiation of any study-related procedures and willing to comply with all required study procedures.
Exclusion Criteria:
- Any uncontrolled or serious disease, or any medical or surgical condition, that may either interfere with participation in the clinical study, and/or put the participant at significant risk (according to investigator's [or delegate] judgment) if he/she participates in the clinical study.
- An underlying known disease, or surgical, physical, or medical condition that, in the opinion of the investigator (or delegate), might interfere with interpretation of the clinical study results.
- New York Heart Association (NYHA) class II, III, or IV heart failure or last known left ventricular ejection fraction <30%.
- Cardiac arrhythmia within 3 months prior to randomization that is not controlled by medication or via ablation.
- Any history of hemorrhagic stroke.
- Major adverse cardiac event within 6 months prior to randomization.
- Uncontrolled severe hypertension: systolic blood pressure >180 millimeters of mercury (mmHg) or diastolic blood pressure >110 mmHg prior to randomization despite anti-hypertensive therapy.
- Poorly controlled Type 2 diabetes, such as, glycated hemoglobin A1c (HbA1c)>10.0% prior to randomization.
- Active liver disease defined as any known current infectious, neoplastic, or metabolic pathology of the liver or unexplained alanine aminotransferase (ALT) or aspartate aminotransferase (AST) elevation >2x the upper limit of normal (ULN), or total bilirubin elevation >1.5x ULN at screening confirmed by a repeat measurement at least 1 week apart.
- Serious comorbid disease in which the life expectancy of the participant is shorter than the duration of the trial (for example, acute systemic infection, cancer, or other serious illnesses). This includes all cancers with the exception of treated basal-cell carcinoma occurring >5 years before screening.
- Females who are pregnant or nursing, or who are of childbearing potential and unwilling to use at least two methods of contraception (oral contraceptives, barrier methods, approved contraceptive implant, long-term injectable contraception, intrauterine device or tubal litigation) for the entire duration of the study. Women who are >2 years postmenopausal defined as ≥1 year since last menstrual period and if less than 55 years old with a negative pregnancy test within 24 hours of randomization or surgically sterile are exempt from this exclusion.
- Males who are unwilling to use an acceptable method of birth control during the entire study period (such as, condom with spermicide).
- Known history of alcohol and/or drug abuse within the last 5 years.
- Treatment with other investigational medicinal products or devices within 30 days or five half˗lives, whichever is longer.
- Use of other investigational medicinal products or devices during the course of the study.
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Any condition that according to the investigator could interfere with the conduct of the study, such as but not limited to the following:
- Inappropriate for this study, including participants who are unable to communicate or to cooperate with the investigator.
- Unable to understand the protocol requirements, instructions and study-related restrictions, the nature, scope, and possible consequences of the study (including participants whose cooperation is doubtful due to drug abuse or alcohol dependency).
- Unlikely to comply with the protocol requirements, instructions, and study-related restrictions (for example, uncooperative attitude, inability to return for follow-up visits, and improbability of completing the study).
- Have any medical or surgical condition, which in the opinion of the investigator would put the participants at increased risk from participating in the study.
- Involved with, or a relative of, someone directly involved in the conduct of the study.
- Any known cognitive impairment (for example, Alzheimer's disease)
- Previous or current treatment (within 90 days of screening) with monoclonal antibodies directed at PCSK9.

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): NCT02597127

Principal Investigator: | Kausik K Ray, MD | Department of Public Health and Primary Care, Imperial College London, Reynolds Building |
Documents provided by The Medicines Company:
Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: | The Medicines Company |
ClinicalTrials.gov Identifier: | NCT02597127 |
Other Study ID Numbers: |
MDCO-PCS-15-01 |
First Posted: | November 5, 2015 Key Record Dates |
Results First Posted: | May 17, 2019 |
Last Update Posted: | May 17, 2019 |
Last Verified: | April 2019 |
Cardiovascular Diseases Atherosclerosis Hyperlipoproteinemia Type II Hypercholesterolemia Hyperlipidemias Dyslipidemias Lipid Metabolism Disorders Metabolic Diseases |
Lipid Metabolism, Inborn Errors Metabolism, Inborn Errors Genetic Diseases, Inborn Hyperlipoproteinemias Arteriosclerosis Arterial Occlusive Diseases Vascular Diseases |