Trial record 4 of 15 for:    "Pulmonary edema of mountaineers"

The Safety Evaluation of Drug Combinations Against High Altitude Pulmonary Hypertension

This study has been completed.
Sponsor:
Collaborators:
Duke University
Oslo University Hospital
Information provided by (Responsible Party):
Trond-Eirik Strand, Norwegian Armed Forces Medical Service
ClinicalTrials.gov Identifier:
NCT01566565
First received: March 27, 2012
Last updated: February 22, 2013
Last verified: February 2013
  Purpose

This is a Phase I, three period, two sequence, open-label, randomized, crossover study, with the primary objective of testing the safety and tolerability of combined oral doses of theophylline and bambuterol in healthy human subjects. The secondary objective is to assess the pharmacokinetic profiles of theophylline and bambuterol when administered alone or in combination. It is hypothesized that the combination of these drugs is generally safe, and that no drug interaction can be observed.


Condition Intervention Phase
High Altitude Pulmonary Hypertension
Drug: Theophylline and Bambuterol
Phase 1

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety Study
Intervention Model: Crossover Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: The Safety Evaluation of Theophylline and Bambuterol When Administered Orally Alone and in Combination to Healthy Volunteers

Resource links provided by NLM:


Further study details as provided by Norwegian Armed Forces Medical Service:

Primary Outcome Measures:
  • Adverse Events [ Time Frame: 24 hours after dosing ] [ Designated as safety issue: Yes ]
    To assess the Number of Participants with Adverse Events after dosing, as a Measure of Safety and Tolerability

  • Pharmacokinetic [ Time Frame: 24 hours after dosing ] [ Designated as safety issue: No ]

    To assess the pharmacokinetic profiles of theophylline and bambuterol when administered alone or in combination.

    PK sample collections for plasma Theophylline and Bambuterol determinations at 0-hour (pre-dose), and at 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 10, 12, and 24 hours post dose



Enrollment: 20
Study Start Date: March 2012
Study Completion Date: May 2012
Primary Completion Date: May 2012 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: Theophylline Drug: Theophylline and Bambuterol
Treatment 3: Theophylline, 300 mg plus Bambuterol, 20 mg
Active Comparator: Bambuterol Drug: Theophylline and Bambuterol
Treatment 3: Theophylline, 300 mg plus Bambuterol, 20 mg

Detailed Description:

This is a Phase I, three period, two sequence, single-center, open-label, randomized, crossover study design. Periods I and II consist of the oral administration of either a single dose of theophylline or bambuterol alone, followed by a 7 day wash out interval. Subsequently, Period III consists of the simultaneous administration of both drugs. All subjects are to be confined to the Oslo University Hospital Research Unit throughout all treatment periods [Study Day 1, 7 and 14]. A sufficient number of healthy adult subjects will be consented in order to enroll 20 and complete 16 subjects who complete all three periods. Replacement of subjects is permitted, if necessary.

Qualified subjects will be randomized into one of two sequences consisting of three Periods as indicated below:

-------------Period 1-----Period 2-----Period 3

Sequence A: Treatment 1 Treatment 2 Treatment 3

Sequence B: Treatment 2 Treatment 1 Treatment 3

TREATMENTS:

Treatment 1: Theophylline 300 mg.

Treatment 2: Bambuterol 20 mg.

Treatment 3: Theophylline 300 mg plus Bambuterol 20 mg.

After completion of each treatment period, the subjects will proceed to the next period provided no Stopping Rules criteria have been met

  Eligibility

Ages Eligible for Study:   18 Years to 40 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion criteria:

  1. Subjects must give written informed consent to participation in the study prior to screening. Consent will be documented by the subject's dated signature
  2. Subjects must be healthy non-smoking adult male and female volunteers between the ages of 18 and 40 years, with a BMI of 18-30 kg/m2 and weighing at least 68 kg. Subjects health status will be determined by the medical history, physical examination, vital signs, electrocardiogram, blood chemistry, hematology, and urinalysis performed at screening.
  3. Subjects must be willing to fast a minimum of 8 hours prior to screening.
  4. Subjects must be willing to abstain from alcohol and xanthine-containing food and beverages (in example coffee, tea, and colas) from 48 hours before the time of admission to the clinical research inpatient unit and until last PK sample of drug given on day 1, 7 and 14 is drawn after 24 hours.
  5. Subjects must be willing to remain in the clinical research unit continuously for the inpatient portion of the study from admission to discharge.
  6. Women who are of non-childbearing potential, must be:

    1. Surgically sterile (removal of both ovaries and/ or uterus at least 12 months prior to dosing)
    2. Naturally postmenopausal (spontaneous cessation of menses) for at least 24 consecutive months prior to dosing on Day -1, with an FSH level at screening of ≥ 40 mIU/mL.
  7. Women of child-bearing potential must have a negative serum pregnancy test within 48 hours of receiving study drug and must agree to avoid pregnancy during study and for one month after the last dose of study drug.
  8. Female subjects of child-bearing potential must agree to avoid pregnancy during study and for three months after the last dose of study drug.
  9. Subjects must agree not to donate blood, plasma, platelets, or any other blood components during the study and for 4 weeks after the last dose.
  10. Male subjects must agree not to donate sperm during the study and for 12 weeks after the last dose.

Exclusion criteria

Individuals meeting ANY ONE of the following criteria will be excluded from the study:

  1. Subjects with laboratory results outside the normal range, if considered clinically significant by the Investigator. In addition, subjects must have a normal hematocrit and hemoglobin concentration and be ≥ 36% and ≥ 12.0 g/dL, respectively and plasma potassium concentration of at least 3.9 mmol/l.
  2. A mental capacity that is limited to the extent that the subject cannot provide legal consent or understand information regarding the side effects of the study drug.
  3. Currently abusing drugs or alcohol or with a history of drug or alcohol abuse within the past two years.
  4. Unwillingness or lack of ability to comply with the protocol, or to reside in the inpatient unit during the required time period, or to cooperate fully with the Principle Investigator and site personnel.
  5. Use of any of the following:

    1. Any concomitant medication including oral contraceptive hormones. Subjects who have received any prescribed or non-prescribed (over-the-counter [OTC]) systemic medication, topical medications, or herbal supplements within 14 days from Day 1. St. John's Wort (hypericin) must not have been taken for at least 30 days prior to Period 1, Day 1.
    2. Any drugs, foods or substances known to be strong inhibitors or strong inducers of CYP enzymes (also known as cytochrome P450 enzymes); especially CYP 1A2, or Pgp within 30 days prior to Period 1, Day 1.
  6. Clinically significant ECG abnormality in the opinion of the Investigator.
  7. Vital signs or clinically significant laboratory values at the screening visit that in the opinion of the Investigator would make the subject an inappropriate candidate for the study.
  8. Has taken any other investigational drug during the 30 days prior to the screening visit or is currently participating in another investigational clinical trial.
  9. Made any significant donation (including plasma) or have had a significant loss of blood within 30 or 90 days prior to Period 1, Day 1.
  10. History or manifestation of clinically significant neurological, gastrointestinal, renal, hepatic, cardiovascular, psychological, pulmonary, metabolic, endocrine, hematologic or other medical disorders.
  11. Subjects who are carriers of the Hepatitis B surface antigen (HbsAg), Hepatitis C antibody, or HIV antibody.
  12. Serious mental or physical illness within the past year.
  13. Male subjects who consume more than 28 units of alcohol per week and female subjects who consume more than 21 units of alcohol per week (one unit of alcohol equals 250 mL of beer, 100 mL or a medium glass of wine, or 25 mL of spirits) or those subjects who have a significant history of alcoholism or drug/ chemical abuse within the last 2 years.
  14. Failure to agree to abstain from alcohol, cola, tea, coffee, chocolate and other caffeinated drink/ food from 2 days before each dosing and throughout confinement.
  15. Positive results on screening tests for drugs of abuse, cotinine or alcohol at screening or the pre-dose assessment at check-in.
  16. Subjects who have used tobacco products or nicotine-containing products (including smoking cessation aids, such as gums or patches) within 12 months prior to Period 1, Day 1.
  17. Women of childbearing potential who are pregnant (as based on test results) or are breast feeding.
  18. Subjects who have a history of hypersensitivity or idiosyncratic reaction to any of the products administered during the study.
  19. Subjects who, in the opinion of the Investigator, should not participate in the study.
  20. Subjects who have a history of unexplained syncope; i.e., autonomic dysfunction.
  21. Subjects who have a history of hypotension, including orthostatic hypotension.
  22. Lack of ability to understand verbal and/ or written Norwegian.
  23. History of severe hypersensitivity or allergic reaction to study medication.
  24. Failure to agree to abstain from grapefruit and grapefruit juice as well as oranges and orange juice from 10 days before the first dose and throughout the study.
  25. History of clinically significant illness within 4 weeks prior to Day 1.
  26. Receipt of a transfusion or any blood products within 90 days prior to Period 1, Day 1.
  27. History of participation in another investigational study or who have participated in an investigational study within the past 30 days prior to Period 1, Day 1.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT01566565

Locations
Norway
Institute of Aviation Medicine, Norwegian Armed Forces Medica
Oslo, Norway, 0313
Sponsors and Collaborators
Norwegian Armed Forces Medical Service
Duke University
Oslo University Hospital
Investigators
Principal Investigator: Trond-Eirik Strand, M.D., Ph.D. Institute of Aviation Medicine, Norwegian Armed Forces Medical
Study Director: Thies Schroeder, Ph.D. Department of Radiation Oncology, Duke University Medical Center
  More Information

No publications provided

Responsible Party: Trond-Eirik Strand, Assistant Director General, Norwegian Armed Forces Medical Service
ClinicalTrials.gov Identifier: NCT01566565     History of Changes
Other Study ID Numbers: 1-Strand
Study First Received: March 27, 2012
Last Updated: February 22, 2013
Health Authority: Norway: Norwegian Medicines Agency

Additional relevant MeSH terms:
Hypertension
Hypertension, Pulmonary
Altitude Sickness
Vascular Diseases
Cardiovascular Diseases
Lung Diseases
Respiratory Tract Diseases
Respiration Disorders
Theophylline
Bambuterol
Purinergic P1 Receptor Antagonists
Purinergic Antagonists
Purinergic Agents
Neurotransmitter Agents
Molecular Mechanisms of Pharmacological Action
Pharmacologic Actions
Physiological Effects of Drugs
Bronchodilator Agents
Autonomic Agents
Peripheral Nervous System Agents
Anti-Asthmatic Agents
Respiratory System Agents
Therapeutic Uses
Phosphodiesterase Inhibitors
Enzyme Inhibitors
Vasodilator Agents
Cardiovascular Agents

ClinicalTrials.gov processed this record on July 26, 2014