A Dose Escalation and Safety Study of I5NP in Patients Undergoing Major Cardiovascular Surgery

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00554359
Recruitment Status : Completed
First Posted : November 6, 2007
Last Update Posted : February 23, 2011
Information provided by:
Quark Pharmaceuticals

Brief Summary:

This is a Phase 1, randomized, double-blind, dose escalation, safety and pharmacokinetic study. The study will be conducted in approximately 8-10 centers in the United States and Switzerland. Up to 32 patients who have undergone major cardiovascular surgery will participate. Patients will receive a single IV injection of I5NP or placebo following cardiovascular surgery. I5NP will be administered 4 hours (+/- 30 minutes) following removal of the cardiopulmonary bypass machine (CBM).

The duration of the study is approximately 44 days, inclusive of a 14 day screening period. Patients will be contacted by phone at 6 and 12 months for follow-up questions. Patient visits are screening, day of surgery, hospital in-patient Days 1, 2, 3 and Day 7 or hospital discharge. Safety follow-up will continue until 30 days post-surgery. 2 phone calls will be made at 6 and 12 months after date of surgery.

Condition or disease Intervention/treatment Phase
Injury of Kidney Acute Renal Failure Drug: I5NP (a small interfering RNA) Drug: placebo Phase 1

Detailed Description:
The drug (I5NP) is a small interfering RNA that is being developed to protect patients from acute kidney injury after cardiac bypass surgery. This first-in-man study will test the safety of I5NP and measure how long the drug stays in the blood stream after injection. This study is not meant to test if I5NP protects kidneys from the damage that may occur in rare cases during surgery. Another purpose of this dose escalation study is to find out the right dose of the experimental drug to be given to study subjects in future studies. Even though there were no harmful effects seen in the animals tested, we do not know what side effects the experimental drug might cause in humans.

Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 16 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Triple (Participant, Care Provider, Investigator)
Primary Purpose: Prevention
Official Title: A Phase I, Randomized, Double-Blind, Dose Escalation Trial of the Safety and Pharmacokinetics of a Single Intravenous Injection of I5NP in Patients Undergoing Major Cardiovascular Surgery
Study Start Date : August 2007
Actual Primary Completion Date : October 2010
Actual Study Completion Date : November 2010

Arm Intervention/treatment
Experimental: I5NP drug Drug: I5NP (a small interfering RNA)
Single IV injection of experimental drug

Placebo Comparator: Placebo Drug: placebo
Single IV injection of saline

Primary Outcome Measures :
  1. Number of Dose Limiting Toxicities (DLTs) observed among 4 cohorts of 4-8 patients per cohort [ Time Frame: Reviewed at the conclusion of each cohort ]
  2. Pharmacokinetics [ Time Frame: Immediately following injection through 24 hrs ]

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Ages Eligible for Study:   21 Years to 85 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria (before surgery):

  • Patient age between 21 years and 85 years old
  • Patient is capable of giving consent
  • Patient is willing and able to comply with the visit schedule and study procedures including post-hospitalization discharge follow-up
  • Patient is undergoing non-emergent coronary artery bypass graft (CABG) and/or valve replacement surgery
  • Patient has a cumulative score of 0 to 8 on the Cleveland Clinic Foundation (CCF) Acute Kidney Injury (AKI) risk factor scale
  • The patient reports that they are up to date and have had normal findings on their age- and sex-appropriate cancer screening, per American Cancer Society guidelines, for breast cancer, cervical cancer, rectal cancer, and prostate cancer. If a patient is not up to date, the relevant screening test must be performed and a normal result documented prior to dosing.

Inclusion Criteria (during surgery):

  • Patient must have been on cardiopulmonary bypass machine (CBM)

Inclusion Criteria (after surgery):

  • Patient must be in the ICU for dosing to facilitate study procedures including PK blood draws and PK urine sampling

Exclusion Criteria (before surgery):

  • Patient has undergone any organ transplant
  • Patient who has had cancer or may be predisposed to develop cancers such as those with family history of cancers in multiple relatives {i.e., Familial Polyposis Coli, those with family history of Von Hippel Landau disease (associated with renal cell cancers and renal cysts) and those with family history of Li-Fraumeni syndrome (associated with inherited mutations of the p53 tumor-suppressor gene)}
  • Patient has a history of any abnormality on chest X-ray that could represent a malignancy
  • Patient has a clinically significantly elevated pancreatic and/or hepatic enzyme level, defined as any grade 2, 3 or 4 value according to the National Cancer Institute (NCI) Common Toxicity Criteria for Adverse Events (CTCAE), version 3.0
  • Patient has an underlying medical condition which increases the risk of perioperative complications, such as poorly controlled diabetes mellitus or hypertension or significant chronic obstructive pulmonary disease (COPD)
  • Women of childbearing potential are to be excluded from this study. Every female subject is considered of childbearing potential unless she has had sterilization surgery, or is post-menopausal.

    • Women 21-59, post-menopausal is defined as no menses for at least 12 months and an elevated follicle stimulating hormone (FSH) level.
    • Women 60-85, post-menopausal is defined as no menses in at least 12 months.
  • Patient has participated in a study of an experimental therapy in the last 30 days
  • Patient is currently receiving immunosuppressive therapy [this criterion does NOT apply to topical steroids and inhalation steroids for chronic obstructive pulmonary disease (COPD) and/or asthma]
  • Patient requires pre-operative dialysis or is currently on dialysis
  • Patient is undergoing aortic aneurism repair
  • Pre-operative extracorporeal membrane oxygenation
  • Pre-operative tracheotomy, or mechanical ventilation
  • Patient has Intra-Arterial Balloon Pump (IABP) or other Left Ventricular Assist Device (LVAD)
  • Evidence that patient is experiencing possible AKI prior to surgery, defined as a > 1.5 times increase in serum creatinine from screening to any time prior to surgery
  • Baseline serum creatinine > 3.0 mg/dL and/or an estimated GFR of < 30 mL/min/1.73 m2, as calculated by the Modification of Diet in Renal Disease [MDRD] Study equation: eGFR (mL/min/1.73 m2) = [186 x (SCr)] - [1.154 x (Age)] - [0.203 x (0.742 if female or 1.210 if African-American female)] where SCr: serum creatinine in mg/dL and age is in years
  • Patient has comfort measures only or do not resuscitate (DNR) status
  • Patient is participating in a concurrent interventional study
  • Patient has received intravenous contrast material < 48 hours prior to surgery
  • In the opinion of the investigator a pre-operative concomitant disease or clinical finding such as an abnormality in clinical lab results, chest X-ray, EKG, or physical examination finding that significantly raises the risk of perioperative complications precludes dosing of the patient

Exclusion Criteria (during surgery):

  • Patient on CBM for > 3 hours
  • Patient experienced major blood loss (>15 units)
  • Use of balloon pump or other LVAD during surgery;
  • In the opinion of the investigator, an intra-operative complication precludes dosing of the patient

Exclusion Criteria (2-3 days post-removal of CBM):

  • Cardiac Index < 2.1 L/min/m2 (applies only to patients with a Swan-Ganz or other PA catheter)
  • Patient has a body temperature ≥ 40 °C
  • Use of IABP post-surgery
  • Fluid imbalance in excess of 15 liters
  • PaO2:FiO2 < 250
  • Patient receiving ≥ 3 concurrent vasopressors to maintain hemodynamic stability
  • In the opinion of the investigator a post-operative complication precludes dosing of the patient

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00554359

United States, District of Columbia
George Washington University
Washington, District of Columbia, United States, 20037
United States, Massachusetts
Brigham and Women's Hospital
Boston, Massachusetts, United States, 02115
United States, Ohio
Cleveland Clinic Foundation
Cleveland, Ohio, United States, 44195
United States, Pennsylvania
University of Pittsburgh Medical Center
Pittsburgh, Pennsylvania, United States, 15213
United States, Texas
Texas Heart Institute at St. Luke's Episcopal Hospital
Houston, Texas, United States, 77030
United States, Virginia
University of Virginia School of Medicine
Charlottesville, Virginia, United States, 22908-0688
Shaare Zedek Medical Center
Jerusalem, Israel, 91031
Rabin Medical Center
Petah Tikva, Israel, 49100
Tel Aviv Sourasky Medical Center
Tel Aviv, Israel, 64239
University Hospital of Geneva
Geneva, Switzerland
Lausanne University Hospital (CHUV)
Lausanne, Switzerland, CH-1011
Sponsors and Collaborators
Quark Pharmaceuticals
Study Director: Martin S. Polinsky, M.D. Quark Pharmaceuticals

Responsible Party: Mike Johnston, Director of Regulatory Affairs, Quark Pharmaceuticals, Inc. Identifier: NCT00554359     History of Changes
Other Study ID Numbers: QRK.002
First Posted: November 6, 2007    Key Record Dates
Last Update Posted: February 23, 2011
Last Verified: February 2011

Keywords provided by Quark Pharmaceuticals:
Acute Kidney Injury
Acute Renal Failure

Additional relevant MeSH terms:
Renal Insufficiency
Acute Kidney Injury
Kidney Diseases
Urologic Diseases