The primary objective of this clinical trial is to demonstrate the superior efficacy of bococizumab compared with placebo in reducing the risk of major CV events, a composite endpoint which includes adjudicated and confirmed CV death, non fatal MI (…
ID
Source
Brief title
Condition
- Lipid metabolism disorders
Synonym
Research involving
Sponsors and support
Intervention
Outcome measures
Primary outcome
The primary endpoint is defined as the time from randomization to the first
adjudicated and confirmed occurrence of a major CV event, a composite endpoint
that includes CV death, non fatal MI, non fatal stroke, and hospitalization for
unstable angina needing urgent revascularization.
Secondary outcome
Key Secondary Endpoints
The times from randomization to the first adjudicated and confirmed occurrence
of the following endpoints (as defined in Appendix 4 of the protocol):
* A composite endpoint of CV death, non fatal MI, and non fatal stroke;
* A composite endpoint of all-cause death, non fatal MI, non fatal stroke, and
hospitalization for unstable angina needing urgent revascularization;
* A composite endpoint of all cause death, non fatal MI and non fatal stroke;
* Hospitalization for unstable angina needing urgent revascularization.
Other Secondary Clinical Endpoints
The times from randomization to the first adjudicated and confirmed occurrence
of the following endpoints:
* A composite endpoint of CV death, non fatal MI, and non fatal stroke, and
hospitalization for unstable angina;
* CV death;
* Any MI (fatal and non-fatal);
* Fatal MI;
* Non fatal MI;
* Any stroke (fatal and non-fatal);
* Any stroke (fatal and non-fatal), of any etiology;
* Fatal stroke;
* Non-fatal stroke;
* Hospitalization for unstable angina;
* Hospitalization for congestive heart failure (CHF);
* Any coronary revascularization procedure;
* CABG;
* PCI;
* Any arterial revascularizations;
* All-cause
Other Secondary Circulating Biomarker Endpoints
The LDL-C biomarker endpoints are the percent change and nominal change, from
baseline at Week 14 and percent change to the last available post randomization
value, in LDL-C (direct measurement).
Other lipid endpoints include the percent change from baseline at Week 14 in
levels of:
* Non HDL C;
* Total cholesterol;
* VLDL C;
* RLP-C;
* Apo B;
* Lp(a);
* Triglycerides;
* HDL-C;
* Apo A I.
* Inflammatory biomarker endpoint
Safety Endpoints
Safety endpoints include investigator reported adverse events, (including Type
1 and 3 hypersensitivity reactions and injection site reactions), serious
adverse events, vital signs, examination observations (physical and
neurological examinations and cognitive testing), 12 lead ECG recordings, and
safety laboratory tests, including hematology, blood chemistry studies
(including liver function tests and creatine kinase tests), urinalysis studies,
and ADA assessments.
See Section 7.2 of the protocol for details.
Background summary
Bococizumab (previously numbered PF 04950615, RN-316, and J16) is a humanized
monoclonal antibody against the proprotein convertase subtilisin kexin type 9
(PCSK9) enzyme responsible for the regulation of the low density lipoprotein
receptor (LDLR), being developed for the following indications: (1) the
treatment of primary hyperlipidemia or mixed dyslipidemia and (2)
cardiovascular (CV) risk reduction, in subjects at high and very high risk of
major cardiovascular events.
Cardiovascular disease (CVD) due to atherosclerosis continues to be the leading
single cause of death in industrialized countries. High serum lipid levels,
and especially high low density lipoprotein cholesterol (LDL C) levels, have
been demonstrated to strongly and directly correlate with cardiovascular
disease risks by numerous epidemiological studies. Moreover, large prospective
clinical outcome trials have demonstrated that lowering LDL C decreases
cardiovascular morbidity and mortality.45 Despite the availability of highly
effective lipid lowering therapies such as statins and ezetimibe, a significant
percentage of patients remain at high risk for CVD.
PCSK9 is the ninth member of the subtilisin family of kexin like proconvertases
to be identified14 and is closely related to proteinase K. PCSK9 is linked to
serum LDL C levels by binding to and down regulating LDLR levels on
hepatocytes. This reduction in LDLR results in reduced cellular uptake of LDL
C and, consequently, higher LDL C levels in serum.17 In contrast, a decrease
in active PCSK9 leads to an increase in hepatocyte LDLR, causing an increase in
LDL uptake from circulation and consequently a subsequent reduction in serum
LDL C levels.15,16 Loss of function mutations lead to higher levels of the
LDLR, and consequently lower plasma LDL-C levels, and protection from coronary
heart disease.18,19,20,21,22 This loss of PCSK9 appears to have no discernible
adverse consequences in the affected subjects.21,22
Bococizumab targets the evolutionarily conserved LDLR binding domain of PCSK9
with high affinity. Bococizumab administered either as a single or multiple
doses, either alone or in combination with current lipid lowering agents, was
generally well tolerated in completed studies. No subjects in completed
studies met the categorical criteria of drug-induced liver injury according to
the Hy*s law definition. Seven percent of subjects (37/517) exposed to
bococizumab across all completed studies developed anti-drug antibodies
(ADAs). The presence of ADAs was not associated with clinical signs or
symptoms of hypersensitivity.
Study objective
The primary objective of this clinical trial is to demonstrate the superior
efficacy of bococizumab compared with placebo in reducing the risk of major CV
events, a composite endpoint which includes adjudicated and confirmed CV death,
non fatal MI (myocardial infarction), non fatal stroke, and hospitalization for
unstable angina with urgent revascularization (as defined in Appendix 4), in
subjects at high or very high risk of major CV events who are on background
lipid lowering treatment and have an LDL C *100 mg/dL (2.59 mmol/L) or non HDL
C (non-high density lipoprotein cholesterol) *130 mg/dL (3.36 mmol/L)
Clinical Secondary Objectives
The key secondary objectives of this clinical trial are to demonstrate in
subjects with high or very high risk of major CV events, who are on background
lipid lowering treatment and have an LDL C *100 mg/dL (2.59 mmol/L) or non HDL
C *130 mg/dL (3.36 mmol/L), the superior efficacy of bococizumab compared with
placebo in reducing the risk of adjudicated and confirmed key secondary
endpoints (as defined in Appendix 4) of:
* A composite endpoint of CV death, non fatal MI, and non fatal stroke;
* A composite endpoint of all-cause death, non fatal MI, non fatal stroke,
and hospitalization for unstable angina needing urgent revascularization;
* A composite endpoint of all-cause death, non-fatal MI and non-fatal stroke;
* Hospitalization for unstable angina needing urgent revascularization.
Please refer to protocol section 2.1.2 for additional secondary objectives
Study design
This is an event driven, Phase 3 multi center, double blind, randomized
parallel group evaluation of the efficacy, safety, and tolerability of
bococizumab compared with placebo, in reducing the occurrence of major CV
events in subjects at risk, who are on background lipid lowering treatment and
have an LDL C *100 mg/dL (2.59 mmol/L) or non HDL C *130 mg/dL (3.36 mmol/L).
After obtaining informed consent, there will be a pre-screening visit. At
this visit subjects will have consented to have had lipid levels assessed and
provide medical records for review, only, so as to determine which of the two
CV outcomes studies the subject is most likely to qualify for, Study B1481022
or Study B1481038. This will be followed by a screening visit, and a run in
period of approximately 6 weeks, during which subjects will be fully assessed
with respect to the trial enrollment criteria and compliance with the
self-administration of subcutaneous injections. The run-in period will be
followed by the treatment period, the duration of which will be determined by
the number of subjects with primary endpoint events, and concluded by a safety
follow-up period.
Approximately 45,000 subjects may be screened and approximately 9,000 will be
randomized.The study will be conducted in North America, Latin America, Europe,
Africa, Asia, and Australia in approximately thirty countries. After
randomization to PF 04950615, subjects will receive 150 mg every two weeks
(Q2wks), or placebo, in a 1:1 ratio.
The trial is intended to complete when approximately 508 subjects have accrued
adjudicated and confirmed primary endpoint events, or 12 months following the
randomization date of the last subject, whichever occurs later. Potential
endpoint events will be adjudicated by an independent adjudication committee.
Subject safety will be monitored by an independent data monitoring committee
(DMC). An independent statistical data analysis center will provide analyses to
the DMC according to the DMC*s charter.
Intervention
Subjects will be randomized to PF-04950615 150 mg or placebo Q2wks in a 1:1
ratio. Subjects will self-inject, or if unable to self-inject, have
investigational product administered by a caregiver (eg, a family member or
health care assistant).
Study burden and risks
The potential benefit of participation in this study for all subjects in this
study is close monitoring of their medical condition and safety. Those
randomized to the active treatment arm may have a benefit of a lower risk of
major CV events. Those randomized to the placebo arm are not expected to
obtain any additional benefit, beyond close monitoring of their medical
condition and safety. A potential risk of participation, for all subjects, is
the occurrence of injection site reactions. For those receiving active
treatment, there may be an additional risk of achieving a very low LDL C. It
is not known if there are any risks associated with very low LDL C.
East 42nd Street 235
New York 10017
US
East 42nd Street 235
New York 10017
US
Listed location countries
Age
Inclusion criteria
Subjects must meet all of the following inclusion criteria to be eligible for enrollment into the study:
1. Informed Consent
There must be evidence of personally signed and dated, informed consent documents for both the pre-screening and screening visits indicating that the subject has been informed of all pertinent aspects of the study. The pre-screening visit informed consent form will be limited to study activities up until the screening visit. The screening visit informed consent form will cover all aspects of the study. Subjects should be reconsented if there are modifications to the original informed consent document, at the next available opportunity. ;2. Compliance
Subjects must be willing and able to comply with scheduled visits, treatment plan, laboratory tests, and other study procedures.;3. Age
Subjects who have not had a prior CVD event must be age * 50 years, if a man, and must be age * 60 years, if a woman, with the following exceptions: Subjects who have not had a prior CVD event, but who have a condition of elevated LDL-C, (heterozygous familial hypercholesterolemia [heFH] or a history of LDL-C*190 mg/dL [4.9 mmol/L]) should be * 35 years of age if a man, and * 45 years of age, if a woman.;4. Acceptance of administration of IP
Subjects must be willing and able to self-administer or be administered sub-cutaneous injections of investigational product.;5. Requirements for background lipid lowering treatment
There should be no plans at the time of pre-screening and randomization to modify the dose of statin for the duration of the trial. Unless the background lipid lowering treatment exceptions described below are met, subjects must be treated with one of the following highly effective statins at the specified daily doses for * 4 weeks prior to the screening visit:
* atorvastatin, at least 40 milligrams (mg) once a day;
* rosuvastatin, at least 20 mg, once a day;
* simvastatin, at least 40 mg, once a day or, if a subject has been on that dose for > 1 year, 80 mg, once a day.
Combination medications that contain atorvastatin, rosuvastatin, or simvastatin components described at the aforementioned, or lower, doses will be permitted. ;Background lipid lowering treatment exceptions
The following background lipid lowering treatment exceptions are permitted:
* Lower doses of statins due to partial statin intolerance
Subjects may be on a lower dose of one of the highly effective statins described above if there is documented intolerance to any one of them (atorvastatin, rosuvastatin, or simvastatin) at the aforementioned doses.
Intolerance to any dose of any statin must be documented as historical adverse events attributed to the statin in question, in the source documentation and case report form (CRF).
* Regulatory limitations
Subjects may be on a lower dose of one of the highly effective statins described above if the highest locally approved dose for one of the stated statins is lower than those doses shown above (e.g., in Japan, atorvastatin 20 mg, once a day, is the highest locally approved dose) or due to label restrictions.;* Alternative statins
Subjects may be treated with other statins (pravastatin, fluvastatin, pitavastatin, or lovastatin), different from the highly effective statins listed above, if there is documented intolerance to any two different highly effective statins (atorvastatin, rosuvastatin, simvastatin) at the lowest available daily dose for at least one of those highly effective statins. Intolerance to any statin must be documented as historical adverse events attributed to the statin in question, in the source documentation and CRF.;* No background statin therapy
Subjects may be enrolled who are only on non-statin lipid lowering therapy (drug and/or preventive cardiology lifestyle change guidance), if complete statin intolerance has been documented. Subjects with complete statin intolerance must be unable to tolerate at least two statins: one statin at the lowest available daily dose AND another statin at any dose. Intolerance to any statin must be documented as historical adverse events attributed to the statin in question, in the source documentation and CRF. The sole exception, for which a subject may participate in the study with documentation of intolerance to only one statin, is a documented history of rhabdomyolysis attributed to that statin statin or a history of documented statin allergy, precluding challenge with an alternative statin.
See Protocol Section 4.1 for inclusion criteria 6-8
Exclusion criteria
1. Personnel involved in the conduct of the study.
Subjects who are investigational site staff members directly involved in the conduct of the trial and their family members, site staff members otherwise supervised by the Investigator, or subjects who are Pfizer employees directly involved in the conduct of the trial.;2. Exclusionary prior CV events or planned revascularization procedures
A planned coronary (PCI or CABG) or other arterial revascularization;
Myocardial infarction, stroke, or any non-coronary arterial revascularization * 30 days prior to screening; Coronary revascularization * 90 days prior to screening; Subjects with SAEs that would have potentially met the criteria for a CVD event (as defined in Appendix 4), between Visit 0 and Visit 5, should be excluded. Such subjects may be rescreened at a later date.;3. Participation in prior clinical research studies
Participation in other studies involving small molecule investigational drug(s) (Phases 1-4) within 1 month, or five half-lives, of Visit 1, whichever is longer; any participation in a cholesteryl ester transfer protein (CETP) inhibitor trial within 1 year of Visit 1; or any biological agents within 6 months or 5 half-lives, of Visit 1, whichever is longer (the investigator should refer to documents provided by the subject on the other study to determine the IP half-life). If the blind of the prior study has been broken and the investigator provides documentation that the subject received placebo, the potential subject can be included, regardless of when participation occurred.;4. Other exclusionary conditions.
Other severe, acute, or chronic medical or psychiatric condition or laboratory abnormality that may increase the risk associated with study participation or investigational product administration or may interfere with the interpretation of study results and, in the judgment of the investigator, would make the subject inappropriate for entry into this study.;5. Childbearing potential and/or breast feeding
Childbearing potential and/or breast feeding Pregnant female subjects; breastfeeding female subjects; and male subjects with partners currently pregnant who are sexually active; male subjects able to father children and female subjects of childbearing potential, who are at risk of pregnancy with their partners and are unwilling or unable to use a highly effective method of contraception as outlined in this protocol for the duration of the study and for 63 days after last dose of investigational product (refer to Section 4.4.2).;6. Latex sensitivity
Latex sensitive individuals (due to potential for exposure to natural dry rubber in the pre-filled syringe cap of IP, during administration).;7. Apheresis
Undergoing lipid apheresis, within 6 weeks of pre-screening, or planned start of lipid apheresis.;8. Severe congestive heart failure
Congestiver heart failure of New York Heart Association (NYHA) Class IV, or if there is prior documentation of left ventricular ejection fraction (LVEF) of < 25%, measured by imaging. For subjects who have had serial assessments of LVEF, only the most recent study is used for the purposes of this exclusion requirement.;9. Dialysis
Potential subjects with end stage renal disease on dialysis.;10. Chronic renal insufficiency
Potential subjects with an eGFR of < 30 ml/min/1.73m2 by MDRD formula at Visit 1.;11. Hypertension
Poorly controlled hypertension at any screening visit or at randomization, defined as the average of two systolic blood pressure (BP) measurements > 180 mmHg or the average of two diastolic BP measurements > 110 mmHg even with treatment. Subjects who have hypertension and are controlled on stable doses of anti-hypertensive medications may be included. An additional BP measurement may be performed within the hour or at the completion of the office visit, to determine if a subject may be included in the study, given the potential for "white coat hypertension." The final set of measurements will be the measurements of record.;12. Cerebral hemorrhage risk
A prior history of hemorrhagic stroke or lacunar infarct resulting in a stroke (a lacunar infarct which was seen with cerebral imaging is not exclusionary in the absence of a clinical stroke). A prior ischemic stroke which resulted in hemorrhagic transformation is not exclusionary. ;13. Tissue donation
Plans to donate tissues (eg, blood, sperm, or other tissues, including participating in in vitro fertilization) during the study.;14. Substance abuse
Current history of alcoholism or drug addiction according to diagnostic and statistical manual of mental disorders (DSM) IV criteria within 12 months prior to screening. Use of any recreational drugs within 12 months prior to screening.;15. Human immunodeficiency virus
Medical history of positive testing for human immunodeficiency virus (HIV).;See Protocol Section 4.2 for exclusion criterions 16-23.
Design
Recruitment
Medical products/devices used
Followed up by the following (possibly more current) registration
No registrations found.
Other (possibly less up-to-date) registrations in this register
No registrations found.
In other registers
| Register | ID |
|---|---|
| EudraCT | EUCTR2013-002795-41-NL |
| CCMO | NL46223.056.13 |