Coronary Heart DiseasePhase 4PPS/PFS-OCTNCT01260558
Test of Long-Term Safety and Efficacy of Sirolimus-Permanent-Polymer Eluting Stent (Cypher)- and Sirolimus-Polymer-free Eluting Stents (PPS/PFS) Assessed by Optical Coherence Tomography
A Phase 4 study testing Sirolimus-Permanent-Polymer Eluting Stent and Sirolimus-Polymer-free Eluting Stent in people with Coronary Heart Disease, run by Deutsches Herzzentrum Muenchen at 2 sites in Germany.
Trial summary
The objective of this pilot study is to compare the PFS-eluting stent (ISAR Rapa G1) with the PPS-eluting stent (Cypher®) regarding uncovered stent strut segments at 5 years. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Coronary Heart Disease
- What is being tested?
- Sirolimus-Permanent-Polymer Eluting Stent and Sirolimus-Polymer-free Eluting Stent
- Type of treatment
- Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 20 participants
- Where
- 2 sitesGermany
- Study dates
- Dec 2010to Dec 2012
- Phase
- Phase 4
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Patients older than age 18 with with previous implantation of polymer-free or permanent-polymer sirolimus-eluting stents 5 years ago due to ischemic symptoms or evidence of myocardial ischemia in the presence of ≥ 50% stenosis located in native coronary vessels.
- Written, informed consent by the patient or her/his legally-authorized representative for participation in the study and assessment by OCT.
- In women with childbearing potential a negative pregnancy test is mandatory.
Who cannot join
- Intervention in the segment of the study stent after the index procedure
- Target lesion located in the left main trunk.
- In-stent restenosis with difficulty to pass the OCT device
- Acute myocardial infarction
- Known allergy to the study medications: Sirolimus, rapamycin, probucol or stainless steel.
- Pregnancy (present, suspected or planned) or positive pregnancy test.
- Patient's inability to fully cooperate with the study protocol.
Trial locations and contacts
2 sites in 1 country.
Germany2 sites, 2 recruiting
- Recruiting
Deutsches Herzzentrum Muenchen
Munich, Bavaria, 80636
Julinda Mehilli, MD, +49 89 12 18 ext. 4582, mehilli@dhm.mhn.de
Klaus Tiroch, MD, +49 89 12 18 ext. 4578, tiroch@dhm.mhn.de
- Recruiting
Klinikum rechts der Isar
Munich, Bavaria, 81675
Steffen Massberg, MD, +49 89 12 18 ext. 4025, massberg@dhm.mhn.de
About this study
Official title: Pilop Trial of OCT-determined Coverage of Permanent or Polymer-free Sirolimus Eluting Stent at Long Term
The objective of this pilot study is to compare the PFS-eluting stent (ISAR Rapa G1) with the PPS-eluting stent (Cypher®) regarding uncovered stent strut segments at 5 years.
Read the detailed description
The mid-term efficacy of drug-eluting stents has been well-established, but there is an ongoing debate on the potential of an increased incidence of late stent thrombosis, particularly after discontinuation of thienopyridine therapy, as well as of delayed onset of restenosis or catch-up phenomenon with permanent polymer-based DES. The extent of strut coverage with reduction of exposed thrombogenic material has been shown to be associated with the inflammatory reaction grade and with the incidence of stent thrombosis. The optical coherence tomography (OCT) is an intravascular imaging modality based on light. The principle is similar to intravascular ultrasound, but due to the much shorter wave length of light, it offers a much better resolution up to 10µm, enabling the exact determination of strut coverage, neointimal thickness, vessel size, presence of dissections, and even the presence of inflammation.
Patients who received a polymer-free or a permanent-polymer sirolimus-eluting stent about 5 years ago without in-segment intervention since, will be evaluated by OCT regarding the healing pattern and the late lumen loss of the stent.
- Conditions
- Coronary Heart Disease
- Being tested
- Sirolimus-Permanent-Polymer Eluting Stent, Sirolimus-Polymer-free Eluting Stent
- Medical subject headings
- Coronary Disease
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Sirolimus-Permanent-Polymer Eluting StentDevice
Also called Cypher®
due randomization sirolimus-permanent-polymer eluting stent was implanted
Sirolimus-Polymer-free Eluting StentDevice
Also called ISAR Rapa G1
due randomization sirolimus-polymer-free eluting stent was implanted
| Study group | Role | What they receive |
|---|---|---|
| Arm 1 | Active comparator | Sirolimus-Permanent-Polymer Eluting Stent Receives: Device: Sirolimus-Permanent-Polymer Eluting Stent |
| Arm 2 | Active comparator | Sirolimus-Polymer-free Eluting Stent Receives: Device: Sirolimus-Polymer-free Eluting Stent |
What is being measured
The primary outcome is the main question the study is designed to answer.
Degree of stent strut coverage after 5 years assessed by OCT for each visible strut segment
Measured: 5 years
Secondary outcomes (4)
Percentage of malapposed strut assessed by OCT
Measured: 5 years
Percentage of uncovered malapposed struts assessed by OCT
Measured: 5 years
Morphologic differences of neointima between stents
Measured: 5 years
Late lumen loss at 5 years assessed by OCT
Measured: 5 years
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted15 Dec 2010 (estimated)
- Study startDec 2010
- Primary completionDec 2012 (estimated)
- Study completionDec 2012 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Coronary Heart DiseaseStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 4
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 20 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Deutsches Herzzentrum Muenchen
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Klaus Tiroch, MD, Principal investigator, Deutsches Herzzentrum Muenchen
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01260558
- Sponsor's protocol ID
- GE IDE No. S03310
- Acronym
- PPS/PFS-OCT
- Status last verified
- May 2012
- First submitted
- 14 Dec 2010
- Last updated
- 8 May 2012
- Results posted
- No
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 8 May 2012. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Pilop Trial of OCT-determined Coverage of Permanent or Polymer-free Sirolimus Eluting Stent at Long Term
- ClinicalTrials.gov ID
- NCT01260558
- Acronym / sponsor ID
- PPS/PFS-OCT / GE IDE No. S03310
- Conditions
- Coronary Heart Disease
- Phase
- Phase 4
- Study type
- Interventional
- Recruitment status
- Unknown status
- Enrolment
- 20 participants (estimated)
- Lead sponsor
- Deutsches Herzzentrum MuenchenUniversity, hospital or other
- Study start
- Dec 2010
- Primary completion
- Dec 2012 (estimated)
- Study completion
- Dec 2012 (estimated)
- First posted
- 15 Dec 2010 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The objective of this pilot study is to compare the PFS-eluting stent (ISAR Rapa G1) with the PPS-eluting stent (Cypher®) regarding uncovered stent strut segments at 5 years.
Detailed description
The mid-term efficacy of drug-eluting stents has been well-established, but there is an ongoing debate on the potential of an increased incidence of late stent thrombosis, particularly after discontinuation of thienopyridine therapy, as well as of delayed onset of restenosis or catch-up phenomenon with permanent polymer-based DES. The extent of strut coverage with reduction of exposed thrombogenic material has been shown to be associated with the inflammatory reaction grade and with the incidence of stent thrombosis. The optical coherence tomography (OCT) is an intravascular imaging modality based on light. The principle is similar to intravascular ultrasound, but due to the much shorter wave length of light, it offers a much better resolution up to 10µm, enabling the exact determination of strut coverage, neointimal thickness, vessel size, presence of dissections, and even the presence of inflammation.
Patients who received a polymer-free or a permanent-polymer sirolimus-eluting stent about 5 years ago without in-segment intervention since, will be evaluated by OCT regarding the healing pattern and the late lumen loss of the stent.
Study design
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Arm 1 | Active comparator | Device: Sirolimus-Permanent-Polymer Eluting StentSirolimus-Permanent-Polymer Eluting Stent |
| Arm 2 | Active comparator | Device: Sirolimus-Polymer-free Eluting StentSirolimus-Polymer-free Eluting Stent |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (3 listed)
- Patients older than age 18 with with previous implantation of polymer-free or permanent-polymer sirolimus-eluting stents 5 years ago due to ischemic symptoms or evidence of myocardial ischemia in the presence of ≥ 50% stenosis located in native coronary vessels.
- Written, informed consent by the patient or her/his legally-authorized representative for participation in the study and assessment by OCT.
- In women with childbearing potential a negative pregnancy test is mandatory.
Key exclusion criteria (7 listed)
- Intervention in the segment of the study stent after the index procedure
- Target lesion located in the left main trunk.
- In-stent restenosis with difficulty to pass the OCT device
- Acute myocardial infarction
- Known allergy to the study medications: Sirolimus, rapamycin, probucol or stainless steel.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Sirolimus-Permanent-Polymer Eluting StentAlso: Cypher®due randomization sirolimus-permanent-polymer eluting stent was implanted | Device | Arm 1 |
| Sirolimus-Polymer-free Eluting StentAlso: ISAR Rapa G1due randomization sirolimus-polymer-free eluting stent was implanted | Device | Arm 2 |
Primary outcome
Degree of stent strut coverage after 5 years assessed by OCT for each visible strut segment
Time frame: 5 years
4 secondary outcomes
Percentage of malapposed strut assessed by OCT
Time frame: 5 years
Percentage of uncovered malapposed struts assessed by OCT
Time frame: 5 years
Morphologic differences of neointima between stents
Time frame: 5 years
Late lumen loss at 5 years assessed by OCT
Time frame: 5 years
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 8 May 2012.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Klaus Tiroch, MD principal investigator
Deutsches Herzzentrum Muenchen
2 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 4 study testing Sirolimus-Permanent-Polymer Eluting Stent and Sirolimus-Polymer-free Eluting Stent in people with Coronary Heart Disease, run by Deutsches Herzzentrum Muenchen at 2 sites in Germany.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: status not confirmed, as of the sponsor's last update on 8 May 2012. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 2 sites in Germany. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
Contact Julinda Mehilli, MD (+49 89 12 18 ext. 4582, mehilli@dhm.mhn.de), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Degree of stent strut coverage after 5 years assessed by OCT for each visible strut segment (time frame: 5 years). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 8 May 2012; AzTrials last refreshed its copy on 8 Nov 2026.