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Effects of ISIS 329993, a C Reactive Protein Antisense Oligonucleotide, in patients with sporadic Atrial Fibrillation

A Phase 2 Study to Assess the Antiarrhythmic and Symptomatic Effect of the Second Generation Antisense Oligonucleotide ISIS 329993 Targeting CRP in Patients with Paroxysmal Atrial Fibrillation - 329993-CS6, Original

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2012-000833-38-GB
Enrollment
20
Registered
2012-05-15
Start date
2012-06-19
Completion date
Unknown
Last updated
2019-02-28

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Atrial fibrillation (AF) MedDRA version: 20.0 Level: PT Classification code 10003658 Term: Atrial fibrillation System Organ Class: 10007541 - Cardiac disorders

Interventions

Product Name: CRP Antisense Oligonucleotide Product Code: ISIS 329993 Pharmaceutical Form: Solution for injection INN or Proposed INN: ISIS 329993

Sponsors

Isis Pharmaceuticals, Inc.
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Must have given written informed consent (signed and dated) and any authorizations required by local law and be able to comply with all study requirements 2. Males or females aged over 18 years old at the time of informed consent 3. Satisfy the following: a. Females: Non-pregnant and non-lactating; surgically sterile, post-menopausal, abstinent, or if engaged in sexual relations of child-bearing potential, subject is using an acceptable contraceptive method (refer to Section 6.3.1) from the time that the participant informed consent document is signed until 60 days after the last dose of Study Drug b. Males: Surgically sterile, abstinent or if engaged in sexual relations of child-bearing potential, subject is utilizing an acceptable contraceptive method (refer to Section 6.3.1) from the time that the participant informed consent document is signed until 60 days after the last dose of Study Drug 4. Dual chamber permanent pacemaker implanted at least 3 months prior to screening 5. Confirmed diagnosis of paroxysmal atrial fibrillation with an AF burden of 1 to 50% at screening, as derived from pacemaker diagnostic algorithms 6. Able to have pacemaker antiarrhythmic algorithms turned off for the duration of the study 7. Able to discontinue all Class I and III antiarrhythmic medication for the duration of the study 8. Therapeutically anticoagulated with Warfarin, and anticipated to be anticoagulated with Warfarin for the duration of the study 9. High sensitivity C-Reactive Protein (hsCRP) =2 mg/L and =10 mg/L at screening (2 measurements taken at least 1 week apart) unless pre-approved by Sponsor Are the trial subjects under 18? no Number of subjects for this age range: 0 F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range 6 F.1.3 Elderly (>=65 years) yes F.1.3.1 Number of subjects for this age range 14

Exclusion criteria

Exclusion criteria: 1. Clinically significant abnormalities in medical history (e.g., acute coronary syndrome within six months of screening, major surgery within three months of screening) or physical examination 2. Screening laboratory results as follows, or any other clinically significant abnormalities in screening laboratory values that would render a subject unsuitable for inclusion: a) Renal Function: •Urine protein or blood persistently positive by dipstick •Estimated creatinine clearance calculated according to the formula of Cockcroft and Gault 1.5 x ULN •Total bilirubin >ULN c) Hematology: •Platelet count 160/100) 21. History of bleeding diathesis or coagulopathy 22. Current or expected use of any anticoagulant apart from Warfarin 23. Regular use of alcohol within 6 months prior to screening (>7 drinks/week for females, >14 drinks/week for ma

Design outcomes

Primary

MeasureTime frame
Main Objective: To evaluate whether treatment with ISIS 329993 can reduce AF (Atrial Fibrillation) burden (percentage of time spent in AF as derived from continuous pacemaker monitoring) in subjects with paroxysmal AF; Secondary Objective: 1. To assess the effect of ISIS 329993 on the total number of AF (Atrial Fibrillation) episodes, average duration of AF per episode, average sinus rhythm duration, and atrial and ventricular rate during AF episodes derived from continuous pacemaker monitoring. 2. To assess the effect of ISIS 329993 on ventricular rate during sinus rhythm derived from continuous pacemaker monitoring. 3. To assess the effect of ISIS 329993 on PR, QRS, QT and QTc intervals derived from 12-lead ECG during periods of sinus rhythm. 4. To assess the effect of ISIS 329993 on measures of Quality of Life as assessed by SF 36, VAS, EHRA grade and AFSS questionnaires. 5. To assess whether treatment with ISIS 329993 reduces hsCRP in subjects with paroxysmal AF. 6. To assess the safety, tolerability, and pharmacokinetics (PK) of ISIS 329993 in subjects with paroxysmal AF. ;Primary end point(s): AF burden as assessed by the use of long term beat to beat pacemaker Holter monitoring;Timepoint(s) of evaluation of this end point: Day 28 and 56

Secondary

MeasureTime frame
Secondary end point(s): • Total number of AF episodes, average duration of AF per episode, average sinus rhythm duration and atrial and ventricular rate during AF episodes • Ventricular rate during sinus rhythm • Quality of life measures assessed by SF 36, VAS, EHRA grade and AFSS questionnaires The effects of treatment with ISIS 329993 vs. Placebo on the following pharmacodynamic measures will be evaluated: • hsCRP and other markers of inflammation (for example erythrocyte sedimentation rate (ESR), serum amyloid A (SAA), IL-6, sTNF-R1 and –R2, fibrinogen). ;Timepoint(s) of evaluation of this end point: Day 28 and 56

Countries

United Kingdom

Contacts

Public ContactMatt Buck

Isis Pharmaceuticals, Inc.

mbuck@isisph.com760-603-2684

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026