Study of Efficacy and Safety of 300 IR Sublingual Immunotherapy (SLIT) Tablets in Adult Patients With Allergic Grass Pollen Rhinoconjunctivitis

A Randomized, Double-blind, Placebo-controlled, Multi-center, Phase III Study of the Efficacy and Safety of 300 IR Sublingual Immunotherapy (SLIT) Administered as Allergen-based Tablets Once Daily to Adult Patients Suffering From Grass Pollen Rhinoconjunctivitis

The purpose of the study is to assess the efficacy and safety of 300 IR sublingual tablet of grass pollen allergen extract compared to placebo in adult patient with allergic rhinoconjunctivitis.

Study Overview

• Status: Completed
• Conditions: Allergic Rhinitis Due to Grass Pollens
• Intervention / Treatment: Drug: 300 IR; Drug: Placebo

Detailed Description

Allergy is one of the most common chronic disease in the world currently affecting between 10% and 25% of the general population.

Allergies to pollens characteristically result in seasonal rhinitis symptoms and allergic rhinoconjunctivitis is characterized by sneezing, congestion, rhinorrhea, nasal or palatal itching and itchy, watery, red and swollen eyes.

Even if several drugs effectively manage allergic rhinoconjunctivitis symptoms, immunotherapy is considered more appropriate for patients in whom these symptoms are not optimally controlled with relief medications.

In the study, each of the six rhinoconjunctivitis symptoms (sneezing, runny nose, itchy nose, nasal congestion, itchy eyes, watery eyes) will be evaluated daily and relief medication intake (oral antihistamines, eye drop antihistamine, nasal corticosteroid, oral corticosteroid) reported daily during the grass pollen season.

Efficacy and good safety profile of 300IR SLIT tablet administered once per day for approximately six months (starting 4 months before and over the season) will be demonstrated during the grass pollen season compared to placebo.

• Study Type: Interventional
• Enrollment (Actual): 473
• Phase: Phase 3

Contacts and Locations

Study Locations

• United States
  • Illinois
    • Normal, Illinois, United States, 61761
      • Sneeze, Wheeze, and Itch Associates, LLC
  • Kentucky
    • Lexington, Kentucky, United States, 40508
      • University of Kentucky Medical Center
    • Owensboro, Kentucky, United States, 42301
      • Allergy & Asthma Specialists, PSC
  • Maryland
    • Baltimore, Maryland, United States, 21224
      • Johns Hopkins University
  • Michigan
    • Ypsilanti, Michigan, United States, 48197
      • Respiratory Medical Research Institute of Michigan PLC
  • Missouri
    • Columbia, Missouri, United States, 65203
      • Clinical Research of The Ozarks, Inc.
    • St. Louis, Missouri, United States, 63141
      • Midwest Clinical Research LLC
    • Warrensburg, Missouri, United States, 64093
      • Clinical Research of the Ozarks, Inc
  • Montana
    • Billings, Montana, United States, 59101
      • Montana Allergy & Asthma Specialists
    • Missoula, Montana, United States, 59808
      • Montana Medical Research
  • Nebraska
    • Omaha, Nebraska, United States, 68131
      • Creighton University - Allergy & Asthma
  • Ohio
    • Cincinatti, Ohio, United States, 45231
      • Bernstein Clinical Research Center, LLC
  • Oregon
    • Eugene, Oregon, United States, 97401
      • Allergy and Asthma Research Group
    • Lake Oswego, Oregon, United States, 97035
      • Baker Allergy, Asthma, & Dermatology Research Center, LLC
    • Medford, Oregon, United States, 97504
      • Clinical Research Institute of Southern Oregon, P.C.
    • Portland, Oregon, United States, 97213
      • Allergy Associates Research
  • Pennsylvania
    • Pittsburgh, Pennsylvania, United States, 15241
      • Allergy & Clinical Immunology Associates
  • Tennessee
    • Nashville, Tennessee, United States, 37203
      • Vanderbilt University Medical Center
  • Washington
    • Vancouver, Washington, United States, 98664
      • North West Asthma Allergy Center

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 65 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

1. Grass pollen-related allergic rhinoconjunctivitis for at least the last two pollen seasons.
2. Positive SPT to grasses
3. Total symptoms score for the previous pollen season more than 12 out of 18.
4. Patients with FEV1 ≥ 80% of the predicted value.

Exclusion Criteria:

1. Positive SPT to other grasses present during the grass pollen season and if endemic to the region
2. Patients with clinically significant confounding symptoms of allergy to other allergens potentially overlapping the grass pollen season
3. Asthma requiring treatment with medications other than beta-2 inhaled agonists.
4. Patients who have received any desensitization treatment for grass pollen in the past 5 years.
5. Ongoing immunotherapy with any other allergen.
6. Patients with any nasal or oral condition that could confound the efficacy or safety assessments
7. Patients with known history of hypersensitivity or intolerance to any of the excipients in the investigational product (such as lactose intolerance).
8. Patients with any past or current clinically significant condition which as judged by the investigator, may affect the patient's participation or the outcome of the study.
9. Patients treated with systemic or inhaled corticosteroids
10. Patients treated or under treatment with beta-blockers, continuous systemic corticotherapy or immunosuppressive drugs.
11. Pregnant, breastfeeding, or sexually active women who are not using a medically accepted contraceptive method as listed above.
12. Patients participating or having participated within 30 days before Screening in any clinical study.
13. Patients who are unlikely to complete the study for any reason, or patients who have to travel for extended periods of time during the grass pollen season which will compromise the data
14. Patients with history of drug or alcohol abuse.
15. Study staff, investigators, sub-investigators, as well as their children or spouses and family members of all study staff should not be enrolled in the study.
16. Patients will not be randomized in this study more than once.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Quadruple

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: 300 IR; 300 IR grass pollen allergen extract tablet	Drug: 300 IR; 300 IR grass pollen allergen extract tablet taken daily for approximately 6 months starting 4 months before the grass pollen season and over the grass pollen season; Other Names: Sublingual immunotherapy tablet
Placebo Comparator: Placebo; Pacebo tablet	Drug: Placebo; Placebo sublingual tablet taken daily for approximately 6 months starting 4 months before the grass pollen season and over the grass pollen season; Other Names: Sublingual placebo tablet

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Combined Score (CS)	The daily Combined Score (CS) is a patient specific score taking into account the patient's daily Rhinoconjunctivis Total Symptom Score (RTSS) and daily Rescue Medication Score (RMS), assuming equivalent importance of symptoms and rescue medication scores. The RMS (range 0-3) is derived as follows: 0, no rescue medication; 1, use of antihistamine; 2, use of nasal corticosteroid; 3, use of oral corticosteroid. The RTSS (range 0-18) is the sum of the 6 individual rhinoconjunctivitis symptom score (each symptom is scored as follows: 0: no symptoms, 1: mild symptoms, 2: moderate symptoms and 3: severe symptoms). The CS (range 0-3) = (RTSS/6 + RMS)/2. The lower the score, the better the outcome.	Pollen period (average of 42.8 days)

Collaborators and Investigators

• Sponsor: Stallergenes Greer
• Investigators: Principal Investigator: COX Linda, MD, Allergists and Immunologists - Fort Lauderdale - Florida

Publications and helpful links

General Publications

• Cox LS, Casale TB, Nayak AS, Bernstein DI, Creticos PS, Ambroisine L, Melac M, Zeldin RK. Clinical efficacy of 300IR 5-grass pollen sublingual tablet in a US study: the importance of allergen-specific serum IgE. J Allergy Clin Immunol. 2012 Dec;130(6):1327-34.e1. doi: 10.1016/j.jaci.2012.08.032. Epub 2012 Oct 31.

Study record dates

Study Major Dates

• Study Start: October 1, 2008
• Primary Completion (Actual): August 1, 2009
• Study Completion (Actual): August 1, 2009

Study Registration Dates

• First Submitted: August 3, 2009
• First Submitted That Met QC Criteria: August 7, 2009
• First Posted (Estimate): August 10, 2009

Study Record Updates

• Last Update Posted (Estimate): May 19, 2016
• Last Update Submitted That Met QC Criteria: April 12, 2016
• Last Verified: April 1, 2016

More Information

Terms related to this study

• Keywords: allergic rhinoconjunctivitis
• Additional Relevant MeSH Terms: Infections; Respiratory Tract Infections; Respiratory Tract Diseases; Immune System Diseases; Hypersensitivity, Immediate; Otorhinolaryngologic Diseases; Respiratory Hypersensitivity; Hypersensitivity; Nose Diseases; Rhinitis; Rhinitis, Allergic
• Other Study ID Numbers: VO61.08 USA