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Study of Alferon® LDO (Low Dose Oral) in Normal Volunteers

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: NCT00215826
Recruitment Status : Completed
First Posted : September 22, 2005
Last Update Posted : April 17, 2013
Information provided by (Responsible Party):
AIM ImmunoTech Inc.

Brief Summary:
The purpose of this trial is to conduct a randomized dose-ranging study to evaluate the safety and activity of orally administered low dose interferon alfa-n3 as an antiviral and immunomodulator in asymptomatic subjects with recent exposure to a person with severe acute respiratory syndrome (SARS) or possible SARS. The primary objective of this pilot study is to determine an Alferon LDO dose level that increases or upregulates genes known to be mediators of interferon response. Secondary endpoints include the development of SARS symptomatology, rate of hospitalization, and mortality rate. In the event that no subjects with recent exposure to a person with SARS or possible SARS are available, this study will be conducted with 10 normal volunteers.

Condition or disease Intervention/treatment Phase
Severe Acute Respiratory Syndrome Drug: Alferon LDO Phase 2

Detailed Description:

This study will be an open-label, randomized, outpatient study in subjects potentially infected with the SARS-CoV (SARS-associated coronavirus) or normal volunteers using two dose levels of LDO interferon.

Subjects will be randomized to receive Alferon® LDO (natural interferon alfa-n3) in a buffer solution once each day for 10 consecutive days at doses equal to 650 IU or 1300 IU/day.

Pretherapy baseline evaluations will be performed prior to randomization.

Subjects will be randomly assigned to each dose level, and both dosage levels will be started concurrently. Drug will be dispensed for a ten day treatment period, during which time any clinical symptoms and adverse events will be evaluated. Laboratory samples (2.5 ml blood) for microarray analysis evaluations will be made twice during baseline and 12-14 hours following doses 1, 5, and 10 on study days 2, 6, and 11, respectively.

The conduct of this study will comply with International Conference on Harmonisation - Good Clinical Practice (ICH - GCP) and the 1996 or later version of the Declaration of Helsinki.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 10 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A Randomized, Dose-ranging Study of Alferon® LDO {Low Dose Oral Interferon Alfa-n3 (Human Leukocyte Derived)} in Normal Volunteers and/or Asymptomatic Subjects With Exposure to a Person Known to Have SARS or Possible SARS
Study Start Date : November 2004
Actual Primary Completion Date : April 2006
Actual Study Completion Date : April 2006

Resource links provided by the National Library of Medicine

Arm Intervention/treatment
Active Comparator: 1
650 IU
Drug: Alferon LDO
Active Comparator: 2
1300 IU
Drug: Alferon LDO

Primary Outcome Measures :
  1. Gene expression analysis [ Time Frame: Days 0, 2, 6, 11, 12, 15, 20 and 40 ]
    Increased expression of genes known to be mediators of interferon response.

Secondary Outcome Measures :
  1. SARS CoV Antibody [ Time Frame: Days 0, 15, 20 and 40 ]
    Development of clinical SARS-CoV symptomatology

  2. SARS-CoV infection
    Hospitalization for SARS-CoV infection and Death

Information from the National Library of Medicine

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, Learn About Clinical Studies.

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Ages Eligible for Study:   18 Years to 80 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  1. 18-80 years of age.
  2. Asymptomatic with close contact within the last 5 days with a person known to have possible SARS (SARS RUI-2 (SARS Report under investigation), RUI-3, RUI-4) or probable SARS or confirmed SARS using the Centers for Disease Control and Prevention (CDC) Supplement B: SARS Surveillance, Appendix B1: Revised Council of State and Territorial Epidemiologists (CSTE) SARS Surveillance Case Definition (Attachment II).
  3. Oral temperature < 100.4°F (<38°C)
  4. Subjects must be asymptomatic with regard to SARS related clinical symptoms including any signs of a respiratory illness.
  5. Serum creatinine ≤ 1.5 x ULN (upper limit of normal); serum bilirubin ≤ 1.5 x ULN.
  6. Total white blood cells (WBC) ≥ 3000/mm3, platelet count ≥ 100,000/mm3 and granulocytes ≥ 1500 mm3.
  7. Hemoglobin > 10.0 g/dl.
  8. ALT (alanine aminotransferase) and AST (aspartate aminotransferase) < 4 times upper normal limit.
  9. C-reactive protein serum level in normal range
  10. Serum albumin > 2.0 g/dl.
  11. Written informed consent.
  12. Females must either be of non-child bearing potential, or utilize an effective form of contraception and have a negative pregnancy test prior to randomization.

Exclusion Criteria:

  1. Pregnant or nursing women, or women not using an effective form of contraception.
  2. Less than 18 years of age.
  3. Active intravenous (IV) drug users.
  4. Receipt of any immunosuppressive agent, chemotherapy, or systemic steroids within 45 days of study entry.
  5. Receipt of any immunomodulator such as BCG (bacille Calmette Guerin) vaccine, isoprinosine, or similar experimental agents within 45 days of study entry.
  6. Evidence of HIV or other viral infections including chronic hepatitis, or other active gastrointestinal, renal, respiratory, endocrine, hematologic, cardiovascular, neurological, or psychiatric disorder that would limit the subject's ability to complete the study period.
  7. Unlikely or unable to comply with the requirements of the protocol.
  8. Patients unwilling or unable to give informed consent.
  9. Patients on any other concurrent experimental medication.
  10. Patients using any form of interferon therapy during the 6 weeks prior to study entry.
  11. Hospitalized subjects, or those with an active viral infection other than possible SARS, within 2 weeks of study entry.
  12. Transfusion dependent subjects (subjects requiring > 1 unit of packed RBC [red blood cells] per month within the 3 months prior to study entry).

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): NCT00215826

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Hong Kong
Princess Margaret Hospital
Lai Chi Kok, Kowloon, Hong Kong
Sponsors and Collaborators
AIM ImmunoTech Inc.
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Principal Investigator: Tommy R. Tong, M.D. The Kowloon West Cluster Clinical Research Ethics Committee
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Responsible Party: AIM ImmunoTech Inc. Identifier: NCT00215826    
Other Study ID Numbers: LDO-102
First Posted: September 22, 2005    Key Record Dates
Last Update Posted: April 17, 2013
Last Verified: April 2013
Keywords provided by AIM ImmunoTech Inc.:
Alferon LDO
Low Dose Oral Interferon ALFA-n3
Human Leukocyte Derived
Exposure to SARS
Possible SARS
Additional relevant MeSH terms:
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Severe Acute Respiratory Syndrome
Respiratory Tract Infections
Coronavirus Infections
Coronaviridae Infections
Nidovirales Infections
RNA Virus Infections
Virus Diseases
Respiratory Tract Diseases
Antiviral Agents
Anti-Infective Agents
Immunologic Factors
Physiological Effects of Drugs