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Efficacy and Safety Study of TOLAMBA™ in Ragweed-Allergic Adults

This study has been terminated.
(Interim data indicated that subjects exhibited no meaningful allergic disease during the first ragweed season, making it impossible to measure treatment effect.)
Information provided by (Responsible Party):
Dynavax Technologies Corporation Identifier:
First received: October 11, 2006
Last updated: March 1, 2017
Last verified: March 2017
The purpose of this study is to find out if a new investigational vaccine, TOLAMBA™, is safe and effective in reducing the symptoms of ragweed allergy.

Condition Intervention Phase
Rhinitis, Allergic, Seasonal
Biological: Amb a 1 immunostimulatory oligodeoxyribonucleotide conjugate
Biological: Histamine base
Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Participant, Investigator
Primary Purpose: Prevention
Official Title: A Randomized, Double-Masked, Placebo-Controlled, Multicenter, Dose-Regimen Study of the Efficacy and Safety of TOLAMBA™ in Ragweed-Allergic Rhinitis Adults

Resource links provided by NLM:

Further study details as provided by Dynavax Technologies Corporation:

Primary Outcome Measures:
  • Change from baseline in total nasal symptom score during the peak period of the ragweed pollen season. [ Time Frame: Two years ]

Enrollment: 738
Study Start Date: April 2006
Study Completion Date: March 2008
Primary Completion Date: May 2007 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: 1
TOLAMBA™ dose-intense regimen
Biological: Amb a 1 immunostimulatory oligodeoxyribonucleotide conjugate
Escalating doses, 6 weekly subcutaneous (under the skin) injections
Other Name: TOLAMBA™
Experimental: 2
TOLAMBA™ lower-dose regimen
Biological: Amb a 1 immunostimulatory oligodeoxyribonucleotide conjugate
Escalating doses, 6 weekly subcutaneous (under the skin) injections
Other Name: TOLAMBA™
Placebo Comparator: 3 Biological: Histamine base
Escalating doses, 6 weekly subcutaneous (under the skin) injections

Detailed Description:

Ragweed allergy is the most common seasonal allergy in North America. Allergen immunotherapy is a therapeutic option for patients who have allergy symptoms that cannot be adequately controlled by avoidance of the allergen or medication. It may also be appropriate for those who cannot tolerate their medications due to side effects or have difficulties with medication compliance. This study compares the safety and efficacy of two different dosing regimens of TOLAMBA™ with placebo in reducing the symptoms of ragweed-allergic adults over two consecutive ragweed pollen seasons.

Comparison(s): Subject-rated allergy symptoms of subjects treated with TOLAMBA™ dose-intense regimen or TOLAMBA™ lower-dose regimen, compared with subjects treated with placebo.


Ages Eligible for Study:   18 Years to 55 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Has a history of ragweed allergic rhinitis (hayfever) during at least the last 2 consecutive seasons that has required treatment with antihistamines, decongestants and/or nasal steroids, but where symptom relief has been incomplete
  • Is willing to stay in their ragweed area during the historical peak period of the local ragweed season, and willing to travel for no more than 2 weeks (cumulative time) outside of their ragweed area during the entire season

Exclusion Criteria:

  • Has had any hospital admissions for asthma
  • Has smoked within the past year, or has a ≥10-pack per year smoking history
  • Has had any previous immunotherapy with ragweed pollen extract, or was in a previous clinical trial with TOLAMBA™
  • Has used Xolair within the past 12 months
  • Has a history of anaphylaxis
  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 identifier: NCT00387738

  Show 28 Study Locations
Sponsors and Collaborators
Dynavax Technologies Corporation
Study Director: Eduardo Martins, MD, DPhil Dynavax Technologies Corporation
  More Information

Additional Information:
Responsible Party: Dynavax Technologies Corporation Identifier: NCT00387738     History of Changes
Other Study ID Numbers: DV1-SAR-09
Study First Received: October 11, 2006
Last Updated: March 1, 2017
Individual Participant Data  
Plan to Share IPD: No
Plan Description: The IND for Tolamba was withdrawn, it was reported to the agency that there was no plan to conduct clinical studies with this compound. [per email from EA 18Dec2015. 3/1/2017 - No update

Keywords provided by Dynavax Technologies Corporation:
Hay Fever

Additional relevant MeSH terms:
Rhinitis, Allergic
Rhinitis, Allergic, Seasonal
Nose Diseases
Respiratory Tract Diseases
Respiratory Tract Infections
Otorhinolaryngologic Diseases
Respiratory Hypersensitivity
Hypersensitivity, Immediate
Immune System Diseases
Histamine Agonists
Histamine Agents
Neurotransmitter Agents
Molecular Mechanisms of Pharmacological Action
Physiological Effects of Drugs processed this record on May 25, 2017