Treatment of Patients With Atherosclerotic Disease With Paclitaxel-associated to LDL Like Nanoparticles (PAC-MAN)

October 24, 2020 updated by: Raul Cavalcante Maranhão, University of Sao Paulo General Hospital

Treatment of Patients With Coronary and Aortic Atherosclerotic Disease With Paclitaxel-associated to LDL Like Nanoparticles. A Randomized, Double-blind, Placebo-control Trial.

The investigators propose a prospective, randomized, double-blind, placebo-controlled study. The purpose of the study is to evaluate the safety and efficacy of an anti-proliferative agent paclitaxel in a cholesterol-rich non-protein nanoparticle (Paclitaxel -LDE) in patients with stable coronary disease.

Patients with multi-vessels stable coronary disease will be randomized to receive Paclitaxel-LDE IV or placebo-LDE IV each 21 days for 6 weeks. The primary and main secondary endpoints will be analyzed by coronary and aortic CTA, that will be performed 1-4 weeks after randomization and at 3-8 weeks after the last treatment cycle.

Patients will undergo clinical and laboratory safety evaluations before each treatment cycle and 3-8 weeks after the last cycle. An algorithm for drug suspension based on clinical and laboratory finding will be followed.

Study Overview

Detailed Description

Atherosclerosis is a life-threatening condition, as long as cardiovascular disease is responsible for 31% of all global mortality.

Inflammation is extremely important in atherosclerosis pathophysiology. The use of inflammatory biomarkers to predict risk, monitor treatments and guide therapy, has shown substantial potential for clinical applicability. Many studies in primary and secondary prevention of cardiovascular disease showed that individuals with lower high sensitive C-reactive protein (hsCRP) have better clinical outcomes than those with higher levels. The potential benefit of anti-inflammatory therapy in atherosclerosis has been previously demonstrated in studies in patients with chronic inflammatory diseases, such as rheumatoid arthritis (AR); in systemic lupus erythematosus; in psoriasis and inflammatory bowel disease, in this patients the spread of the inflammatory cascade results in premature atherosclerotic plaque formation. Cardiovascular mortality is the cause of death in 40-50% of AR patients. The treatment of systemic diseases with TNF-a inhibitors has been associated with a reduction in cardiovascular events in patients with AR and psoriasis.

In this setting, the use of non-invasive treatments to reduce lesion size and inflammation is essential for the prevention of sub-sequent cardiovascular events.

The most potent anti-proliferative drugs currently available are chemotherapeutic agents used for cancer treatment. However, the systemic use of these drugs at high doses for the treatment of atherosclerotic cardiovascular diseases is unlikely due to their significant, often life-threatening toxicity. Nonetheless, the toxicity of such agents can be strongly diminished by the use of optimized drug-delivery systems. In a pioneer study performed on patients with acute leukemia, Maranhão et al. reported the potential of a cholesterol-rich non-protein nanoparticle (LDE) as a drug targeting agent. LDE particles have lipid compositions and structures that resemble low-density lipoprotein (LDL) and can be injected directly into the bloodstream. When LDE particles come into contact with plasma, the particles acquire exchangeable apolipoproteins from native lipoproteins, such as apolipoprotein (apo) E, which binds the particles to LDL receptors. In neoplastic cells, lipoprotein receptors are overexpressed, such that uptake of native LDL and of LDE particles is increased relative to that in normal tissues. In aortas of cholesterol-fed rabbits the uptake of LDE particles is increased in comparison to normal aortas and in rabbit-grafted hearts take up the nanoemulsion at amounts fourfold greater than native hearts.

LDE-paclitaxel treatment of rabbits induced to exhibit atherosclerosis via high cholesterol intake resulted in a 65% reduction in lesion size. In rabbits that underwent heterotopic heart transplantation, LDE-paclitaxel treatment markedly reduced heart graft damage by preventing coronary vessel destruction and macrophage invasion into the myocardium.

In a pilot study Maranhão et al showed that treatment with high-dose LDE-paclitaxel had low enough toxicity to permits the use in patients with cardiovascular disease, and an average 18% reduction in aortic plaque volume in four out of the eight participants, which is a promising finding. This result was especially noteworthy in view of the short 18-week treatment period and when considering that plaque reduction did not occur in any of the control group patients. In contrast, statistically significant disease progression was observed in the non-treated control patients.

The aim of this study is to investigate whether patients with aortic and coronary atherosclerotic disease showed good tolerability to LDE-paclitaxel treatment and whether this formulation could achieve reduction in plaque volume and characteristics by coronary and aortic CT angiography.

Study Type

Interventional

Enrollment (Actual)

40

Phase

  • Phase 2
  • Phase 3

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

    • SP
      • São Paulo, SP, Brazil, 05403900
        • Heart Institute (InCor) - University of São Paulo Medical School, São Paulo, Brazil

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 80 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Multi-vessels coronary artery disease diagnosis by coronary CTA scan or invasive angiography
  • Aortic atherosclerosis diagnosis by multidetector computed tomography (MDCT) angiography.
  • Signing the study informed consent.

Exclusion Criteria:

  • History of AMI in the last 30 days
  • Heart failure with ejection fraction <40%
  • Estimated glomerular filtration rate < 40 mL/min/1.73 m2.
  • Prior history of chronic infectious disease, including tuberculosis, severe fungal disease, or known HIV positive.
  • Chronic hepatitis B or C infection.
  • Prior history of nonbasal cell malignancy or myeloproliferative or lymphoproliferative disease within the past 5 years.
  • White blood cell count <4000/mm3, hematocrit <32%, or platelet count <75000/mm3.
  • Alanine aminotransferase levels (ALT) greater than 3-fold the upper limit of normal.
  • History of actual alcohol abuse or unwillingness to limit alcohol consumption to < 4 drinks per week.
  • Pregnancy or breastfeeding.
  • Women of child bearing potential, even if currently using contraception.
  • Men who plan to father children during the study period or who are unwilling to use contraception.
  • Chronic use of oral steroid therapy or other immunosuppressive or biologic response modifiers.
  • Known chronic pericardial effusion, pleural effusion, or ascites.
  • Angina pectoris CCS III-IV
  • New York Heart Association class III-IV congestive heart failure.
  • Contraindication for the use of iodinated contrast
  • Life expectancy of < 1 years.
  • Acute or Chronic aortic dissection

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: LDE-Paclitaxel
Paclitaxel carried by a lipid nanoparticle (LDE-Paclitaxel)
LDE-Paclitaxel at the dose of 175 mg/m2 IV each 21 days for 6 weeks
Placebo Comparator: LDE-Placebo
Lipid nanoparticle (LDE)
LDE-Placebo at the dose of 175 mg/m2 IV each 21 days for 6 weeks

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Low Attenuation Plaque Volume (LAPV) coronary
Time Frame: Baseline and change from baseline to 6-8 months
Compare Low attenuation Plaque Volume( LAPV) measured by coronary CTA between Paclitaxel-LDE and Placebo-LDE groups.
Baseline and change from baseline to 6-8 months
Low Attenuation Plaque Volume (LAPV) aortic
Time Frame: Baseline and change from baseline to 6-8 months
Compare Low attenuation Plaque Volume( LAPV) measured by aortic CTA between Paclitaxel-LDE and Placebo-LDE groups.
Baseline and change from baseline to 6-8 months

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Noncalcified plaque volume (NCPV)
Time Frame: Baseline and change from baseline to 6-8 months
Compare Noncalcified plaque volume (NCPV) measured by coronary CTA between Paclitaxel-LDE and Placebo-LDE groups.
Baseline and change from baseline to 6-8 months
Dense calcified plaque volume (DCPV)
Time Frame: Baseline and change from baseline to 6-8 months
Compare Dense calcified plaque volume (DCPV) measured by coronary CTA between Paclitaxel-LDE and Placebo-LDE groups.
Baseline and change from baseline to 6-8 months
Total lumen value (TLV)
Time Frame: Baseline and change from baseline to 6-8 months
Compare Total lumen value (TLV) measured by coronary CTA between Paclitaxel-LDE and Placebo-LDE groups.
Baseline and change from baseline to 6-8 months
Remodeling index (RI)
Time Frame: Baseline and change from baseline to 6-8 months
Compare Remodeling index (RI)measured by coronary CTA between Paclitaxel-LDE and Placebo-LDE groups.
Baseline and change from baseline to 6-8 months
Perivascular fat attenuation index (FAI)
Time Frame: Baseline and change from baseline to 6-8 months
Compare Perivascular fat attenuation index (FAI)measured by coronary CTA between Paclitaxel-LDE and Placebo-LDE groups.
Baseline and change from baseline to 6-8 months
Total atheroma volume (TAV)
Time Frame: Baseline and change from baseline to 6-8 months
Compare Total atheroma volume (TAV) measured by coronary CTA between Paclitaxel-LDE and Placebo-LDE groups.
Baseline and change from baseline to 6-8 months
Total atheroma volume (TAV) aortic
Time Frame: Baseline and change from baseline to 6-8 months
Compare Total atheroma volume (TAV) measured by aortic CTA between Paclitaxel-LDE and Placebo-LDE groups.
Baseline and change from baseline to 6-8 months
Clinical significant symptoms
Time Frame: 3±1, 6±1, 9±1, 12±1, 15±1 and 18±1 weeks
Compare the incidence of clinical significant symptoms (new and persistent stomatitis, vomiting, diarrhea, unexplained cough with fever, shortness of breath, alopecia, neurotoxicity, myalgia, arthralgias, bradycardia, hypotension, local pain) reported in each visit between Paclitaxel-LDE and Placebo-LDE groups.
3±1, 6±1, 9±1, 12±1, 15±1 and 18±1 weeks
Other adverse events
Time Frame: 3±1, 6±1, 9±1, 12±1, 15±1 and 18±1 weeks
Compare the incidence of other adverse events (not expected) reported in each visit between Paclitaxel-LDE and Placebo-LDE groups.
3±1, 6±1, 9±1, 12±1, 15±1 and 18±1 weeks
Red blood cell count
Time Frame: 3±1, 6±1, 9±1, 12±1, 15±1 and 18±1 weeks
Compare hemoglobin and hematocrits levels between Paclitaxel-LDE and Placebo-LDE groups.
3±1, 6±1, 9±1, 12±1, 15±1 and 18±1 weeks
White blood cell count
Time Frame: 3±1, 6±1, 9±1, 12±1, 15±1 and 18±1 weeks
Compare leucocyte and neutrophil levels levels between Paclitaxel-LDE and Placebo-LDE groups.
3±1, 6±1, 9±1, 12±1, 15±1 and 18±1 weeks
Platelet count
Time Frame: 3±1, 6±1, 9±1, 12±1, 15±1 and 18±1 weeks
Compare total Platelet levels between Paclitaxel-LDE and Placebo-LDE groups.
3±1, 6±1, 9±1, 12±1, 15±1 and 18±1 weeks
Alanine aminotransferase (ALT)
Time Frame: 3±1, 6±1, 9±1, 12±1, 15±1 and 18±1 weeks
Compare Alanine aminotransferase (ALT) levels between Paclitaxel-LDE and Placebo-LDE groups.
3±1, 6±1, 9±1, 12±1, 15±1 and 18±1 weeks
Aspartate aminotransferase (AST)
Time Frame: 3±1, 6±1, 9±1, 12±1, 15±1 and 18±1 weeks
Compare Aspartate aminotransferase (AST) levels between Paclitaxel-LDE and Placebo-LDE groups.
3±1, 6±1, 9±1, 12±1, 15±1 and 18±1 weeks
Creatinine
Time Frame: 3±1, 6±1, 9±1, 12±1, 15±1 and 18±1 weeks
Compare Creatinine levels between Paclitaxel-LDE and Placebo-LDE groups.
3±1, 6±1, 9±1, 12±1, 15±1 and 18±1 weeks
Urea
Time Frame: 3±1, 6±1, 9±1, 12±1, 15±1 and 18±1 weeks
Compare Urea levels between Paclitaxel-LDE and Placebo-LDE groups.
3±1, 6±1, 9±1, 12±1, 15±1 and 18±1 weeks

Other Outcome Measures

Outcome Measure
Measure Description
Time Frame
High-sensitivity C reactive protein (hs-CRP)
Time Frame: Baseline and change from baseline to 6-8 months
Compare High-sensitivity C reactive protein (hs-CRP) between Paclitaxel-LDE and Placebo-LDE groups.
Baseline and change from baseline to 6-8 months
Interleukin 6 (IL-6)
Time Frame: Baseline and change from baseline to 6-8 months
Compare Interleukin 6 (IL-6) between Paclitaxel-LDE and Placebo-LDE groups.
Baseline and change from baseline to 6-8 months
Interleukin 1b (IL-1b)
Time Frame: Baseline and change from baseline to 6-8 months
Compare Interleukin 1b (IL-1b) between Paclitaxel-LDE and Placebo-LDE groups.
Baseline and change from baseline to 6-8 months
Interleukin 10 (IL-10)
Time Frame: Baseline and change from baseline to 6-8 months
Compare Interleukin 10 (IL-10) between Paclitaxel-LDE and Placebo-LDE groups.
Baseline and change from baseline to 6-8 months
Interleukin 8 (IL-8)
Time Frame: Baseline and change from baseline to 6-8 months
Compare Interleukin 8 (IL-8) between Paclitaxel-LDE and Placebo-LDE groups.
Baseline and change from baseline to 6-8 months
Interferon gamma (IFN-y)
Time Frame: Baseline and change from baseline to 6-8 months
Compare Interferon gamma (IFN-y) between Paclitaxel-LDE and Placebo-LDE groups.
Baseline and change from baseline to 6-8 months
Tumor necrosis factor-alpha (TNF-a)
Time Frame: Baseline and change from baseline to 6-8 months
Compare Tumor necrosis factor-alpha (TNF-a) between Paclitaxel-LDE and Placebo-LDE groups.
Baseline and change from baseline to 6-8 months
Total Cholesterol
Time Frame: Baseline and change from baseline to 6-8 months
Compare Total Cholesterol levels between Paclitaxel-LDE and Placebo-LDE groups.
Baseline and change from baseline to 6-8 months
High-density lipoprotein cholesterol (HDL)
Time Frame: Baseline and change from baseline to 6-8 months
Compare High-density lipoprotein cholesterol (HDL) levels between Paclitaxel-LDE and Placebo-LDE groups.
Baseline and change from baseline to 6-8 months
Low-density lipoprotein cholesterol (LDL)
Time Frame: Baseline and change from baseline to 6-8 months
Compare Low-density lipoprotein cholesterol (LDL) levels between Paclitaxel-LDE and Placebo-LDE groups.
Baseline and change from baseline to 6-8 months
Triglyceride
Time Frame: Baseline and change from baseline to 6-8 months
Compare Triglyceride levels between Paclitaxel-LDE and Placebo-LDE groups.
Baseline and change from baseline to 6-8 months
Creatine phosphokinase (CPK)
Time Frame: Baseline and change from baseline to 6-8 months
Compare Creatine phosphokinase (CPK) levels between Paclitaxel-LDE and Placebo-LDE groups.
Baseline and change from baseline to 6-8 months
Cholesterol efflux
Time Frame: Baseline and change from baseline to 6-8 months
Compare Cholesterol efflux between Paclitaxel-LDE and Placebo-LDE groups.
Baseline and change from baseline to 6-8 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Study Chair: Raul C Maranhão, MD;PhD, Director Lipid Metabolism Laboratory, Heart Institute

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

June 23, 2019

Primary Completion (Actual)

August 12, 2020

Study Completion (Anticipated)

August 23, 2021

Study Registration Dates

First Submitted

October 30, 2019

First Submitted That Met QC Criteria

October 30, 2019

First Posted (Actual)

November 4, 2019

Study Record Updates

Last Update Posted (Actual)

October 27, 2020

Last Update Submitted That Met QC Criteria

October 24, 2020

Last Verified

October 1, 2020

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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