Efficacy of Methylprednisolone for Hantavirus Cardiopulmonary Syndrome
The purpose of this study is to see if a drug, called methylprednisolone, is safe and effective in people with Hantavirus infection. Individuals 2 years of age or older are invited to participate in this study if their doctor suspects or knows they have Hantavirus infection. Volunteers will either be given methylprednisolone or placebo (contains no medication) through a needle inserted in a vein for 3 days. During the first 7 days of hospitalization procedures may include blood tests, physical exams, chest x-rays, and urine tests. During study visits on days 14, 28, 84 and 180 after diagnosis, the doctors will ask about health, examine the body, take a chest X-ray, collect blood for safety testing and for measuring antibodies, and do breathing tests on volunteers. Participants will be involved in the study for about 6 months.
|Study Design:||Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
|Official Title:||A Phase II Randomized, Double-Blind, Placebo-Controlled Trial of Intravenous Methylprednisolone as a Treatment for Presumed Hantavirus Cardiopulmonary Syndrome|
- The Proportion of Subjects Who Develop Death, PaO2/FiO2 Ratio Less Than or Equal to 55, Cardiac Index Less Than or Equal to 2.2, Pulseless Electrical Activity, Ventricular Tachycardia or Fibrillation [ Time Frame: 28 days ] [ Designated as safety issue: No ]
- Number of Participants With SAEs [ Time Frame: 6 months ] [ Designated as safety issue: Yes ]The Number of participants with SAEs
- Number of Participants on Extracorporeal Membrane Oxygenation (ECMO) [ Time Frame: 6 months ] [ Designated as safety issue: No ]number of participants
- Duration of ICU Stays [ Time Frame: 6 months ] [ Designated as safety issue: No ]
- Duration of Hospital Stay in Days [ Time Frame: 6 months ] [ Designated as safety issue: No ]Days
- Duration of Shock and/or Pressor/Inotropic Support [ Time Frame: 6 months ] [ Designated as safety issue: No ]Pressor/inotropic support refers to the use of adrenaline-like medications to maintain blood pressure and cardiac output.
- Number of Participants Intubated and Placed on a Ventilator After Study Entry. [ Time Frame: 6 months ] [ Designated as safety issue: No ]Participants
- Number of Participants Who Developed Refractory Shock Despite Fluid Resuscitation After Study Entry [ Time Frame: 6 months ] [ Designated as safety issue: No ]Refractory shock refers to shock that persists despite fluid resucitation. Fluid resusitation refers to administration of intravenous fluids to maintain blood pressure and cardiac output.
- Length of Time on a Ventilator [ Time Frame: 6 months ] [ Designated as safety issue: No ]
- Development of Serum Creatinine Greater Than or Equal to 3.0 mg/dL After Study Entry [ Time Frame: 6 months ] [ Designated as safety issue: No ]
|Study Start Date:||January 2003|
|Study Completion Date:||October 2011|
|Primary Completion Date:||December 2010 (Final data collection date for primary outcome measure)|
Active Comparator: Active
Intravenous methylprednisolone 16 mg/kg/day for 3 days as follows: 8 mg/kg (up to 500 mg) given over first hour followed by 8 mg/kg over the next 23 hours; then 16 mg/kg (up to 1000 mg) on days 2 and 3 administered over 24 hours.
Other Name: Medrol
Placebo Comparator: Placebo
This study is a phase II, randomized, double-blind, placebo-controlled evaluation of intravenous methylprednisolone versus placebo in treatment of hantavirus cardiopulmonary syndrome (HCPS). Patients with suspected or known hantavirus will be randomized to receive intravenous methylprednisolone or placebo over 3 days. Following the completion of this acute phase therapy, patients will be seen for follow up visits on days 14, 28, 84 and 6 months after study entry. Follow up visits will include a physical examination, including vital signs. In addition, blood will be drawn for a blood count, clinical chemistries, and quantitative polymerase chain reaction (day 14). Since Hantavirus pathogenesis involves the pulmonary system, other tests to be performed include chest x ray (day 28) and spirometry (days 28 and 180). The study will require 60 subjects with confirmed Hantavirus infection. Study subjects will include males and females greater than or equal to 2 years of age suspected of having Hantavirus disease. The enrolling co investigator must feel that Hantavirus disease is likely on the basis of the clinical syndrome. The primary study objectives are to: assess the efficacy of intravenous methylprednisolone in reducing the severity of HCPS and assess the safety of methylprednisolone in persons with suspected and proven Hantavirus infection. The secondary objectives are to: assess the impact of therapy on viremia and assess whether measurement of neutralizing antibody titers at entry or Human Leukocyte Antigen (HLA) typing can identify subgroups with increased risk of severe disease and/or death and whether therapy is effective in these subgroups. The primary endpoints will include: the proportion of subjects who develop one or more of the following critical events associated with severe disease 28 days after study entry: death, PaO2/FiO2 ratio less than or equal to 55, cardiac index less than or equal to 2.2, pulseless electrical activity, ventricular tachycardia or fibrillation; and number of serious adverse events determined by study investigators to be at least possibly related to study treatment. For this endpoint researchers will report: the median number of serious adverse events and the proportion that experience one or more serious adverse events. The secondary study endpoints include: to assist in defining the natural history of the disease but will not meaningfully affect treatment: Extracorporeal Membrane Oxygenation (ECMO); duration of intensive care unit stays; duration of hospital stays; duration of shock and/or pressor/inotropic support; length of time on mechanical ventilation; intubated and placed on a ventilator; refractory shock despite fluid resuscitation; and serum creatinine greater than or equal to 3.0 milligrams/deciliter.
|Facultad de Medicina Clinica Alemana- Universidad del Desarrollo|
|Principal Investigator:||Pablo Vial, MD||Universidad del Desarrollo|