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A Pilot Study to Evaluate ZADAXIN's® (Thymalfasin) Ability to Enhance Immune Response to the H1N1sw Influenza Vaccine

This study has been completed.
Information provided by (Responsible Party):
sigma-tau i.f.r. S.p.A. Identifier:
First received: December 11, 2009
Last updated: March 28, 2012
Last verified: March 2012
The purpose of this explorative trial is to collect preliminary data on efficacy and safety of thymosin alpha 1 given at different doses as an adjuvant to egg-derived H1N1sw monovalent influenza vaccine in hemodialysis patients. The final aim is that of gathering information needed for planning a following confirmatory study on the efficacy and safety of Thymosin alpha 1 in the same indication.

Condition Intervention Phase
Biological: MF59 adjuvanted H1N1 influenza monovalent vaccine
Drug: Thymosin alpha 1
Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Supportive Care
Official Title: A Pilot, Randomized, Open-label Study in Patients on Chronic Dialysis With End Stage Renal Disease (Esrd), to Evaluate the Enhancing Effect of Two Doses of Thymosin Alpha 1 on the Immunogenicity of h1n1sw Monovalent Vaccine

Resource links provided by NLM:

Further study details as provided by sigma-tau i.f.r. S.p.A.:

Primary Outcome Measures:
  • The measures of immunogenicity, as determined by HI; MN and SRH [ Time Frame: Geometric mean HI titer (GMT) on Day 0, Day 21, Day 42, Day 84 and Day 168 for the primary course ]

Enrollment: 120
Study Start Date: November 2009
Study Completion Date: July 2010
Primary Completion Date: May 2010 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: H1N1sw monovalent vaccine Biological: MF59 adjuvanted H1N1 influenza monovalent vaccine
One/two single administration
Other Name: Focetria™
Experimental: Thymosin alpha 1 3.2mg Drug: Thymosin alpha 1
1.6 mg, 3.2 mg seven days before vaccination (study day -7) and at the same day of vaccination (study day 0)
Other Name: Zadaxin
Experimental: Thymosin alpha 1 6.4 mg Drug: Thymosin alpha 1
1.6 mg, 6.4 mg seven days before vaccination (study day -7) and at the same day of vaccination (study day 0)
Other Name: Zadaxin

Detailed Description:

The emergence and spread of the novel influenza A (H1N1) virus has been of great concern globally.

Uremic patients are especially vulnerable to infections and it is generally recommended to vaccinate patients with chronic renal insufficiency yearly against influenza. In patients on haemodialysis (HD) the vaccination response has been considered suboptimal.

Decreased antibody response to T-cell dependent antigens may be one factor that accounts for insufficient efficacy of certain vaccination programs (eg, influenza). Diminished antibody responses have also been reported in patients with end-stage renal disease. The evidence for impairment of cell-mediated immunity in hemodialysis patients has been attributed to incompetence in T-cell-mediated immune responses.

Since Zadaxin can enhance T-cell-dependent specific antibody production, the addition of Zadaxin (Thymosin alpha 1)to vaccination programs for immunocompromised individuals should be effective.


Ages Eligible for Study:   18 Years to 80 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  1. Signed written informed consent.
  2. Age > 18 .
  3. Chronic dialysis for ESRD .
  4. Life expectancy of at least 6 months.

Exclusion Criteria:

  1. They have any serious disease
  2. They are hypersensitive to eggs, chicken protein, chicken feathers, influenza viral protein, neomycin or polymyxin or any other component of the vaccine.
  3. They have a history of neurological symptoms or signs, or anaphylactic shock following administration of any vaccine.
  4. Within the past 3 days, they have experienced fever (i.e., axillary temperature _ 38°C).
  5. They have any condition which, in the opinion of the investigator, might interfere with the evaluation of the study objective.
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Please refer to this study by its identifier: NCT01031966

Second Division of Nephrology and Dialysis - Padua Hospital
Padua, Italy, 35128
Sponsors and Collaborators
sigma-tau i.f.r. S.p.A.
Principal Investigator: Agostino Naso, MD Second Division of Nephrology and Dialysis - Padua Hospital
  More Information

Responsible Party: sigma-tau i.f.r. S.p.A. Identifier: NCT01031966     History of Changes
Other Study ID Numbers: ST1472-DM-09-005
Study First Received: December 11, 2009
Last Updated: March 28, 2012

Keywords provided by sigma-tau i.f.r. S.p.A.:

Additional relevant MeSH terms:
Kidney Diseases
Kidney Failure, Chronic
Renal Insufficiency, Chronic
Urologic Diseases
Renal Insufficiency
Immunologic Factors
Physiological Effects of Drugs
Adjuvants, Immunologic
Antineoplastic Agents processed this record on April 28, 2017