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Trial to Evaluate Safety and Tolerability of ALN-PCS02 in Subjects With Elevated LDL-Cholesterol (LDL-C)

This study has been completed.
Information provided by (Responsible Party):
Alnylam Pharmaceuticals Identifier:
First received: September 19, 2011
Last updated: October 11, 2012
Last verified: October 2012
The purpose of this study is to determine the safety, tolerability, pharmacokinetics and pharmacodynamics of a single dose of ALN-PCS02 in subjects with Elevated LDL-Cholesterol (LDL-C).

Condition Intervention Phase
Elevated LDL-Cholesterol (LDL-C) Drug: ALN-PCS02 Drug: Sterile Normal Saline (0.9% NaCl) Phase 1

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single (Participant)
Primary Purpose: Treatment
Official Title: A Phase 1, Randomized, Single-blind, Placebo-Controlled, Single Ascending Dose, Safety, Tolerability and Pharmacokinetics Study of ALN-PCS02 in Subjects With Elevated LDL-Cholesterol (LDL-C)

Resource links provided by NLM:

Further study details as provided by Alnylam Pharmaceuticals:

Primary Outcome Measures:
  • The proportion of subjects experiencing adverse events (AEs), serious adverse events (SAEs) and study drug discontinuation. [ Time Frame: Up to 28 days ]

Secondary Outcome Measures:
  • Pharmacokinetics (PK) of ALN-PCS02 (Cmax, tmax, t1/2, AUC0-last, CL). [ Time Frame: Up to 180 days ]
  • Effect of ALN-PCS02 on Circulating PCSK9 Levels (Determination of % Lowering of PCSK9 to pretreatment/Baseline PCSK9 Level). [ Time Frame: Up to 28 days ]
  • Effect of ALN-PCS02 on Circulating LDL-c Levels (Determination of % Lowering of LDL-c to pretreatment/Baseline LDL-c Level). [ Time Frame: Up to 28 days ]

Enrollment: 32
Study Start Date: September 2011
Study Completion Date: September 2012
Primary Completion Date: March 2012 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: ALN-PCS02 Drug: ALN-PCS02
Dose levels between 15 and 400 μg/kg by intravenous (IV) infusion
Placebo Comparator: Sterile Normal Saline (0.9% NaCl) Drug: Sterile Normal Saline (0.9% NaCl)
Calculated volume to match active comparator


Ages Eligible for Study:   18 Years to 65 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Elevated LDL-C of >3.0 mmol/L and <5.7 mmol/L
  • Fasting triglyceride concentration ≤2.8 mmol/L
  • Body weight >60.0 kg; body mass index (BMI) between 19.00 kg/m2 and <35.00 kg/m2
  • Adequate blood counts, liver and renal function
  • May not received any lipid lowering drug/agent within the 30 days prior to the screening
  • Non-smokers for at least 3 months
  • Women of child-bearing potential must have a negative pregnancy test, cannot be breast feeding, and must use an adequate method of birth control
  • Males agree to use appropriate contraception
  • Willing and able to comply with protocol-required visit schedule and visit requirements and provide written informed consent

Exclusion Criteria:

  • Known hepatitis B surface antigen (HBsAg), hepatitis B virus (HBV), hepatitis C virus (HCV) or human immunodeficiency virus (HIV) infection
  • Multiple drug allergies or know sensitivity to oligonucleotide
  • History of drug abuse and/or alcohol abuse
  • Receiving an investigational agent within 3 months prior to study drug administration
  • Subjects with safety laboratory test results deemed clinical significant by the Investigator;
  • Received prescription drugs within 4 weeks of first dosing
  • Subjects who have donated more than 500 mL of blood within the 3 months prior to ALN-PCS02 or placebo administration;
  • Received megadose vitamin therapy or dietary supplements within 4 weeks prior to screening
  • Subjects who have used prescription drugs within 4 weeks of first dosing
  • Considered unfit for the study by the Principal Investigator
  • Employee or family member of the sponsor or the clinical study site personnel
  Contacts and Locations
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, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01437059

United Kingdom
Clinical Site
Leeds, United Kingdom, LS2 9LH
Clinical Site
London, United Kingdom, SE1 1YR
Sponsors and Collaborators
Alnylam Pharmaceuticals
Study Director: Amy Simon, MD Alnylam Pharmaceuticals