Trial to Demonstrate the Safety and Effectiveness of the MiStent II for the Revascularization of Coronary Arteries.
CRYSTAL
CRYSTAL Study: A Multi-Center, Randomized, Controlled Trial to Demonstrate the Safety and Effectiveness of the MiStent II for the Revascularization of Coronary Arteries.
1 other identifier
interventional
1,300
0 countries
N/A
Brief Summary
To compare MiStent to either the Xience or Promus stents.with the primary objective being to assess the safety and efficacy of the MiStent in a patient population requiring revascularization of de novo obstructive lesions of coronary arteries in patients with stable and unstable coronary artery disease (CAD) including non ST-Elevation Myocardial Infarction (NSTEMI)
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for not_applicable coronary-artery-disease
Started Dec 2021
Longer than P75 for not_applicable coronary-artery-disease
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
January 23, 2018
CompletedFirst Posted
Study publicly available on registry
February 6, 2018
CompletedStudy Start
First participant enrolled
December 31, 2021
CompletedPrimary Completion
Last participant's last visit for primary outcome
June 1, 2023
CompletedStudy Completion
Last participant's last visit for all outcomes
June 1, 2027
ExpectedSeptember 4, 2020
September 1, 2020
1.4 years
January 23, 2018
September 3, 2020
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Target Lesion Failure (TLF)
Any occurrence of Target Lesion Failure (TLF) TLF is defined as: Cardiac death, or Target vessel myocardial infarction (TV-MI, Q-wave and non Q-wave), or Ischemia driven target lesion revascularization.
through 12-month visit
Secondary Outcomes (12)
Device success
Index Procedure
Technical success
Index Procedure
Procedural success
Index Procedure
Composite Endpoint POCE
prior to discharge, at 1-, 6- and 12-months and annually thereafter through 5 years' follow-up
Composite Endpoint MACE
prior to discharge, at 1-, 6- and 12-months and annually thereafter through 5 years' follow-up
- +7 more secondary outcomes
Study Arms (2)
MiStent II Coronary Artery Stent
EXPERIMENTALImplantation of a coronary artery stent in an all-comers population, including patients with symptomatic coronary artery disease including patients with chronic stable angina, silent ischemia, and acute coronary syndromes, who qualify for percutaneous coronary interventions
Xience or Promus Coronary Artery Stents
ACTIVE COMPARATORImplantation of a coronary artery stent in an all-comers population, including patients with symptomatic coronary artery disease including patients with chronic stable angina, silent ischemia, and acute coronary syndromes, who qualify for percutaneous coronary interventions
Interventions
Implantation of a coronary stent patient with stable and unstable coronary artery disease including non-ST-Elevated Myocardial Infarction
Implantation of a coronary stent patient with stable and unstable coronary artery disease including non-ST-Elevated Myocardial Infarction
Eligibility Criteria
You may qualify if:
- Subject must be ≥ 18 years of age
- Subject (or legal guardian) understands the trial requirements and the treatment procedures and provides written informed consent before any trial-specific tests or procedures are performed
- Subject is eligible for percutaneous coronary intervention (PCI)
- Subject has symptomatic coronary artery disease with objective evidence of ischemia or silent ischemia
- Subject is an acceptable candidate for coronary artery bypass grafting (CABG)
- Subject is willing to comply with all protocol-required follow-up evaluation
- Target lesion(s) must be located in a native coronary artery with a visually estimated reference vessel diameter (RVD) ≥2.50 mm and ≤3.50 mm
- Target lesion(s) must be able to be treated with a single stent and the target lesion length must be ≤27 mm (by visual estimate).
- NOTE: Only lesion lengths that have both the control and comparable investigational stent lengths available at the same time are eligible for enrollment.
- Target lesion(s) must have visually estimated stenosis ≥50% and \<100% with thrombolysis in Myocardial Infarction (TIMI) flow \>1 and one of the following:
- Stenosis ≥70% or;
- Abnormal fractional flow reserve (FFR) defined as \<0.80 or;
- Abnormal stress or imaging stress test or;
- Elevated biomarkers prior to the procedure
- Coronary anatomy is likely to allow delivery of a study device to the target lesions(s)
- +1 more criteria
You may not qualify if:
- Subject has clinical symptoms and/or electrocardiogram (ECG) changes consistent with acute ST elevation MI (STEMI)
- Subject has cardiogenic shock, hemodynamic instability requiring inotropic or mechanical circulatory support, intractable ventricular arrhythmias, or ongoing intractable angina
- Subject has received an organ transplant or is on a waiting list for an organ transplant
- Subject is receiving or scheduled to receive chemotherapy within 30 days before or after the index procedure
- Planned PCI (including staged procedures) or CABG after the index procedure
- Subject previously treated at any time with intravascular brachytherapy in the target vessel(s)
- Subject has a known allergy to contrast (that cannot be adequately premedicated) and/or the trial stent system or protocol-required concomitant medications (e.g., Cobalt-chromium alloy, stainless steel, everolimus or structurally related compounds, polymer or individual components, all P2Y12 inhibitors, or aspirin)
- Subject has one of the following (as assessed prior to the index procedure):
- Other serious medical illness (e.g., cancer, congestive heart failure) with estimated life expectancy of less than 24 months
- Current problems with substance abuse (e.g., alcohol, cocaine, heroin, etc.)
- Planned procedure that may cause non-compliance with the protocol or confound data interpretation
- Subject is receiving chronic (≥72 hours) anticoagulation therapy (i.e., heparin, coumadin, or other anticoagulation therapy) for indications other than acute coronary syndrome
- Subject has a platelet count \<100,000 cells/mm3 or \>700,000 cells/mm3
- Subject has a white blood cell (WBC) count \< 3,000 cells/mm3
- Subject has documented or suspected liver disease, including laboratory evidence of hepatitis
- +22 more criteria
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- Micell Technologieslead
- Baim Institute for Clinical Researchcollaborator
- North American Science Associates Inc.collaborator
- Yale Cardiovascular Research Groupcollaborator
MeSH Terms
Conditions
Study Officials
- STUDY CHAIR
Laura Mauri, MD, MSc
Brigham and Women's Hospial
- PRINCIPAL INVESTIGATOR
Dean Kereiakes, MD
The Christ Hospital
- PRINCIPAL INVESTIGATOR
David Kandzari, MD
Piedmont Heart Institute
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- SINGLE
- Who Masked
- PARTICIPANT
- Masking Details
- This is a single-blind trial, such that the patient or patient's family will NOT be told which stent they have received.
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
January 23, 2018
First Posted
February 6, 2018
Study Start
December 31, 2021
Primary Completion
June 1, 2023
Study Completion (Estimated)
June 1, 2027
Last Updated
September 4, 2020
Record last verified: 2020-09
Data Sharing
- IPD Sharing
- Will not share