Treatment of Drug-eluting Stent (DES) In-Stent Restenosis With SeQuent® Please Paclitaxel Eluting Percutaneous Transluminal Coronary Angioplasty (PTCA) Catheter

Klinikum Coburg

Status and phase

Unknown

Phase 2

Conditions

In-Stent Restenosis

Treatments

Device: SeQuent® II

Device: SeQuent® Please

Study type

Interventional

Funder types

Other

Identifiers

NCT00998439

PEPCAD DES

Details and patient eligibility

About

The aim of the study is to assess the efficacy of the Paclitaxel-eluting PTCA - balloon catheter SeQuent® Please to treat in-stent restenoses (ISR) of various drug eluting stents in native coronary arteries with reference diameters between 2.5 mm and ≤ 3.5 mm and lesion lengths ≤ 22 mm. The vessel patency following treatment with SeQuent® Please will be documented in ISR patients that have been treated with the Cypher® or Taxus® drug eluting stent.

Full description

Background information

Current treatments for In Stent Restenosis (ISR) are 'uncoated balloon only' angioplasty with conventional balloons (POBA), Bare Metal Stent (BMS) implantations, cutting balloons, rotablation and atherectomy. Their respective results to lower target vessel revascularizations were in part unsatisfactory and often conflicting. Also the temporary use of brachytherapy lead to late lumen loss (LLL) findings in the range from 0.22 ± 0.84 mm. Therefore, brachytherapy to treat ISR has also been abandoned because of the associated delayed endothelialization leading to late thrombosis.

The use of drug eluting stents (DES) to treat ISR lowered restenosis rates in the single digit range. Recently, the use of matrix coated paclitaxel-eluting PTCA balloon catheters (SeQuent® Please, Paccocath Technology®, Bayer/Schering & B.Braun Melsungen AG) was compared to PES in the PEPCAD II trial which showed significantly lower 6-month LLL, 6-month MACE and TVR rates for SeQuent® Please (7.25%) as compared to PES for which the 12-month TVR rate was 19.0% and therefore in agreement with prior studies (ISAR DESIRE). Since these assessments were done in patients with BMS in-stent restenosis, it is of paramount interest to study in-stent restenosis of failed DES implantations since they may cause continued chronic inflammatory responses caused by the non-bioabsorbable polymer in particular once the drug release has ceased.

Enrollment

120 estimated patients

Sex

All

Ages

18+ years old

Volunteers

No Healthy Volunteers

Inclusion and exclusion criteria

Inclusion Criteria: Patient Related

Patients with stable angina pectoris (CCS class 1-3) or with unstable angina pectoris (Braunwald class 1-2, A-C) or documented ischemia or with documented silent ischemia
Patients eligible for coronary revascularization by means of PCI
Patients suitable for coronary revascularization of any sort (balloon angioplasty, device-assisted balloon-angioplasty, or coronary artery bypass grafting)
Patients must be ≥ 18 years of age
Women of childbearing potential may not be pregnant nor have the desire to becoming pregnant during the first year following the study procedure. Hence, patients will be advised to use an adequate birth control method up to and including 6 months follow-up
Patients who are mentally and linguistically able to understand the aim of the study and to show sufficient compliance in following the study protocol
Patients must agree to undergo the 6 months angiographic follow-up
Patients must agree to undergo the 1 and 3 year clinical follow-up
Patient is able to verbally acknowledge an understanding of the associated risks, benefits, and treatment alternatives to therapeutic options of this trial, e.g., balloon angioplasty by means of the paclitaxel-eluting PTCA-balloon catheter or other suitable devices. The patients, by providing their informed consent, agree to these risks and benefits as stated in the patient informed consent document.

Inclusion Criteria: Lesion Related

In-stent restenosis or Mehran type III stenoses reaching ≤ 2 mm into the adjacent native vessel of a drug eluting stent (DES), in a native coronary artery (reference vessel between ≥ 2.5 and ≤ 3.5 mm, lesion length ≤ 22 mm as angiographically documented)
Diameter stenosis pre procedure must be either ≥ 70 % or ≥ 50 % if ischemia corresponding to the target lesion is documented either by exercise stress ECG, stress echocardiography, scintigraphy, MRT, or suspected based on angina pectoris.
DES in-stent restenosis independent of the the number of metal layers (e.g. restenosed DES following BMS and/or DES implantation(s))

Exclusion Criteria: Patient Related

Patients with acute (< 24 h) or recent (48 hours) myocardial infarction
Patients with unstable angina pectoris (Braunwald class 3)
Patients with severe congestive heart failure
Patients with severe heart failure NYHA IV
Patients demonstrating clinical signs of cardiogenic shock at the time of the procedure (systolic blood pressure of less than 80 mmHg requiring inotropic support, IABP and/or fluid challenge)
Patients with severe valvular heart disease
Women who are pregnant or lactating patients with life expectancy of less than five years or factors making clinical follow-up difficult
Patients with another coronary stent previously implanted into the target vessel
Patients with bleeding diathesis in whom anticoagulation or anti-platelet medication is contraindicated
Patients who had a cerebral stroke < 6 months prior to the procedure
Patient participates in other clinical trials involving any investigational device or drug
Untreated hyperthyroidism
Patient has presence or history of severe renal failure (GFR < 30ml/min) and is therefore not eligible for angiography. Patient's serum creatinine levels must be documented.
Post transplantation of any organ or immune suppressive medication
Other disease to jeopardize follow-up (e.g. malignoma)
Addiction to any drug or to alcohol
Patients with any type of surgery during the week preceding the interventional procedure
Conditions which prevent the intake of the double anti-platelet therapy for three months

Exclusion Criteria: Lesion Related

Evidence of extensive thrombosis within target vessel before the intervention
Side branch > 2 mm in diameter originating from the stent
Bifurcate lesion
Left main coronary artery stenosis
Multilesion percutaneous coronary intervention within the same artery (a main artery e.g., LCX and its side branch e.g. OMS are considered as different arteries)
Percutaneous coronary intervention of venous graft
Coronary artery occlusions of any type (e.g. acute or chronic)
In-segment stenosis of the native vessel within the 5 mm adjacent to the stent
Lesion within 1 mm of vessel origin

Exclusion Criteria: Related to Concomitant Medication

Patient is intolerant to aspirin and/or the ADP-antagonists clopidogrel or has a history of neutropenia, thrombocytopenia induced by ADP-antagonists, or severe hepatic dysfunction prohibiting the use of clopidogrel
Patient has leucopoenia (leukocyte count < 109/liter for more than 3 days)
Patient has neutropenia (ANC < 1000 neutrophils/mm3 for more than 3 days)
Patient has a history of peptic ulcer or gastric/intestinal bleeding during the past 6 months
Patient has a history of thrombocytopenia (< 100,000 platelets/mm3)