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Phase I Interaction Study of Istaroxime and Digoxin in Subjects With Stable Heart Failure

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Debiopharm

Status and phase

Withdrawn
Phase 1

Conditions

Heart Failure

Treatments

Drug: Istaroxime

Study type

Interventional

Funder types

Industry

Identifiers

NCT00869115
Debio 0614-106
PAREXEL Study Number : 98378

Details and patient eligibility

About

This study explores a potential drug-drug interaction between istaroxime and digoxin in patients with stable CHF on chronic oral digoxin treatment.

Full description

This is a single center, randomized, double blind, placebo controlled, escalating dose phase I interaction study. The three dose levels of istaroxime or placebo will be randomized sequentially to three cohorts (I to III) of 16 patients each (12 patients on istaroxime and 4 patients on placebo). Digoxin will be administered non blinded in all patients, once daily in the morning after a standardized breakfast, continuing with previously personalized dosage schedule during the screening period, treatment period, post treatment period and follow up period. Prior to accrual of cohorts II and III, a Data Monitoring Committee (DMC) will advise on the continuation to the next istaroxime dose, based on a predetermined safety review.

This 37 day study includes a screening period (Days -21 to -1), a treatment period (Day 1), a post treatment period (Days 2-4), and a follow up period (which includes one patient visit on Day 14). Patients will be confined in the phase I research center from Day -2 to Day 4.

Sex

All

Ages

18+ years old

Volunteers

No Healthy Volunteers

Inclusion criteria

Main screening inclusion criteria :

  • Signed informed consent;
  • Male or female patients ≥18 years;
  • Female patients of childbearing potential must not be pregnant;
  • Chronic stable cardiac function impairment (no change in heart failure medication over the last 3 months and without any dosage adjustment in the last 4 weeks);
  • Systolic blood pressure (SBP) of ≥ 90 mmHg and ≤ 140 mmHg;
  • LVEF ≤ 35% by any method (to be performed at screening if not measured within the last 12 months);
  • Chronic treatment (i.e. once daily dosing without interruption) with oral digoxin started at least 3 months prior to study entry and without any concomitant administration of other positive inotropic drugs;

Exclusion criteria

Main screening exclusion criteria :

  • Need for current or intermittent intravenous positive inotrope administration within the preceding 6 months, or hemodynamic support devices;
  • Acute coronary syndrome within the past 3 months;
  • Coronary artery bypass graft or percutaneous coronary intervention within the past 3 months;
  • Stroke within the past 6 months;
  • Atrial fibrillation or uncontrolled heart rate (HR) (> 100 beats per minute [bpm]);
  • Significant arrhythmia or second or third degree atrio-ventricular block;
  • Valvular disease as the primary cause of HF;
  • Significant ECG abnormalities as assessed by appropriately qualified physician or investigator including QTcF >450;
  • Positive testing for Human Immunodeficiency Virus (HIV), Hepatitis B and/or Hepatitis C;

Main randomization exclusion criteria:

  • HR > 100 bpm or < 50 bpm;
  • Serum potassium > 5.3 mmol/L or < 3.8 mmol/L and magnesium > 1.1 mmol/L or < 0.6 mmol/L,
  • TN I > ULN.

Trial design

0 participants in 4 patient groups, including a placebo group

1
Experimental group
Description:
TREATMENT 0.5 μg/kg/min
Treatment:
Drug: Istaroxime
Drug: Istaroxime
Drug: Istaroxime
Drug: Istaroxime
2
Experimental group
Description:
TREATMENT 1.0 μg/kg/min
Treatment:
Drug: Istaroxime
Drug: Istaroxime
Drug: Istaroxime
Drug: Istaroxime
3
Experimental group
Description:
TREATMENT 1.5 μg/kg/min
Treatment:
Drug: Istaroxime
Drug: Istaroxime
Drug: Istaroxime
Drug: Istaroxime
4
Placebo Comparator group
Description:
PLACEBO
Treatment:
Drug: Istaroxime
Drug: Istaroxime
Drug: Istaroxime
Drug: Istaroxime

Trial contacts and locations

0

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Data sourced from clinicaltrials.gov

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