A Study to Test a New Decongestant in Patients With Allergic Rhinitis Following a Nasal Allergen Challenge

A Randomized, Double Blind, Double Dummy, Placebo Controlled, Four Way Crossover Study To Determine The Effects Of An H3 Receptor Antagonist (PF-03654746) On Congestion Following A Nasal Allergen Challenge In Subjects With Seasonal Allergic Rhinitis.

An H3 receptor antagonist should reduce the congestion associated with allergic rhinitis. A nasal allergen challenge will be given to patients to induce rhinitis symptoms and acoustic rhinometry will be used to measure the congestion.

Study Overview

• Status: Completed
• Conditions: Allergic Rhinitis
• Intervention / Treatment: Drug: Placebo; Drug: Allegra; Drug: Allegra-D; Drug: PF-03654746

• Study Type: Interventional
• Enrollment (Actual): 21
• Phase: Phase 2

Contacts and Locations

Study Locations

• United States
  • Nebraska
    • Omaha, Nebraska, United States, 68131
      • Pfizer Investigational Site

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 19 years to 55 years (Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Male or female subjects 19-55 years with allergic rhinitis requiring treatment within the previous 2 years.
• Subjects that respond to a ragweed nasal allergen challenge at screening.

Exclusion Criteria:

• History of asthma or FEV1 < 80% predicted.
• Significant concomitant disease or medications.
• Symptoms of allergic rhinitis within 2 weeks prior to screening.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Crossover Assignment
• Masking: Double

Number of Arms

4

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Placebo Comparator: Placebo	Drug: Placebo; A single oral dose of Placebo is dosed during the study in order to ascertain the effect of placebo on measures and in order to maintain the blind of the other drugs.
Active Comparator: Allegra	Drug: Allegra; A single oral dose of Allegra is dosed to subjects in combination with PF-03654746.
Active Comparator: Allegra-D	Drug: Allegra-D; A single oral dose of Allegra-D is dosed to subjects as an active comparator.
Experimental: PF-03654746	Drug: PF-03654746; A single oral dose of PF-03654746 is the investigational drug being studied.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Minimum Cross-Sectional Area (Amin) Proportion Measured Using Acoustic Rhinometry	Acoustic rhinometry: a technique intended for assessment of the geometry of nasal cavity and nasopharynx and for evaluating nasal obstruction. At each time point, there were 2 acoustic rhinometry measurements taken, one for each nostril. Mean of the left and right nostril measurements was taken as measurement at each time point. Minimum Cross-Sectional Area (Amin) at Baseline was defined as mean of 3, 'post-diluent, pre-allergen challenge' measures for each intervention period at 2 hours (hrs) 10 minutes (min), 2 hrs 25 min and 2 hrs 40 min post PF-03654746/placebo dose. Amin 'post-allergen challenge' measures recorded at 2 hrs 55 min, 3 hrs 10 min and 3 hrs 25 min post PF-03654746/placebo dose for each intervention period was averaged to derive single 'post-allergen challenge' value. Amin proportion was defined as ratio of 'post-allergen challenge' value and 'Baseline/pre-allergen challenge value'. Diluent used was saline and allergen was short ragweed extract.	2 hrs 10 min, 2 hrs 25 min, 2 hrs 40 min post dose (Baseline); 2 hrs 55 min, 3 hrs 10 min, 3 hrs 25 min post dose on Day 1 of each intervention period
Nasal Volume Proportion Measured Using Acoustic Rhinometry	Acoustic rhinometry: a technique intended for assessment of the geometry of nasal cavity and nasopharynx and for evaluating nasal obstruction. At each time point, there were 2 acoustic rhinometry measurements taken, one for each nostril. Mean of the left and right nostril measurements was taken as measurement at each time point. Nasal volume at Baseline was defined as mean of 3, 'post-diluent, pre-allergen challenge' measures for each intervention period at 2 hrs 10 min, 2 hrs 25 min and 2 hrs 40 min post PF-03654746/placebo dose. Nasal volume 'post-allergen challenge' measures recorded at 2 hrs 55 min, 3 hrs 10 min and 3 hrs 25 min post PF-03654746/placebo dose for each intervention period was averaged to derive single 'post-allergen challenge' value. Nasal volume proportion was defined as ratio of 'post-allergen challenge' value and 'Baseline/pre-allergen challenge value'. Diluent used was saline and allergen was short ragweed extract.	2 hrs 10 min, 2 hrs 25 min, 2 hrs 40 min post dose (Baseline); 2 hrs 55 min, 3 hrs 10 min, 3 hrs 25 min post dose on Day 1 of each intervention period

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Minimum Cross-Sectional Area (Amin) Maximum Fall Measured Using Acoustic Rhinometry	Acoustic rhinometry: a technique intended for assessment of the geometry of the nasal cavity and nasopharynx and for evaluating nasal obstruction. At each time point, there were 2 acoustic rhinometry measurements taken, one for each nostril. The mean of the left and right nostril measurements was taken as the measurement at each time point. Minimum Cross-Sectional Area (Amin) at Baseline was defined as mean of the 3, 'post-diluent, pre-allergen challenge' measures for each intervention period at 2 hrs 10 min, 2 hrs 25 min and 2 hrs 40 min post PF-03654746/placebo dose. Amin 'post-allergen challenge' measures were recorded at 2 hrs 55 min, 3 hrs 10 min and 3 hrs 25 min post PF-03654746/placebo dose for each intervention period. The maximum fall in Amin was calculated as baseline measure minus smallest 'post-allergen challenge' Amin measurement of the 3 measures.	2 hrs 10 min, 2 hrs 25 min, 2 hrs 40 min post dose (Baseline); 2 hrs 55 min, 3 hrs 10 min, 3 hrs 25 min post dose on Day 1 of each intervention period
Nasal Volume Maximum Fall Measured Using Acoustic Rhinometry	Acoustic rhinometry: a technique intended for assessment of the geometry of the nasal cavity and nasopharynx and for evaluating nasal obstruction. At each time point, there were 2 acoustic rhinometry measurements taken, one for each nostril. The mean of the left and right nostril measurements was taken as the measurement at each time point. Nasal volume at Baseline was defined as mean of the 3, 'post-diluent, pre-allergen challenge' measures for each intervention period at 2 hrs 10 min, 2 hrs 25 min and 2 hrs 40 min post PF-03654746/placebo dose. Nasal volume 'post-allergen challenge' measures were recorded at 2 hrs 55 min, 3 hrs 10 min and 3 hrs 25 min post PF-03654746/placebo dose for each intervention period. The maximum fall for nasal volume was calculated as baseline measure minus smallest 'post-allergen challenge' nasal volume measurement among the 3 measures.	2 hrs 10 min, 2 hrs 25 min, 2 hrs 40 min post dose (Baseline); 2 hrs 55 min, 3 hrs 10 min, 3 hrs 25 min post dose on Day 1 of each intervention period
Nasal Symptom Scores: Nasal Congestion, Nasal Itching, Rhinorrhea	Nasal symptoms included; nasal congestion: participants rated sensation of nasal blockage on 0 (no blockage) to 5 (total blockage) scale, nasal itching: participants rated sensation of nasal itch on 0 (no itch) to 5 (very itchy) scale, rhinorrhea: participants rated sensation of runny nose on 0 (no running) to 5 (very runny) scale. Symptom scores were assessed as mean of each intervention period at specified time-points for 'post-diluent, pre-allergen challenge' measure and 'post-challenge' measure. Post-diluent, pre-allergen challenge (for congestion, itching, rhinorrhea) included 2 hrs 10 min, 2 hrs 25 min and 2 hrs 40 min post PF-03654746/placebo dose at each intervention period and post-allergen challenge (for congestion, itching, rhinorrhea) included 2 hrs 55 min, 3 hrs 10 min and 3 hrs 25 min post PF-03654746/placebo dose at each intervention period and (for congestion only) 3 hrs 40 min post PF-03654746/placebo dose (Post-oxymetazoline) at each intervention period.	2 hrs 10 min, 2 hrs 25 min, 2 hrs 40 min post dose (Pre-allergen challenge); 2 hrs 55 min, 3 hrs 10 min, 3 hrs 25 min post dose (Post-allergen challenge); 3 hrs 40 min post dose (Post-oxymetazoline) on Day 1 of each intervention period
Nasal Symptom Scores: Sneezing	The absolute number of sneezes was recorded by the participants under supervision of study personnel. Nasal symptom score for sneezing was assessed as the total number of sneezes of each intervention period at specified time-points for the post-diluent and post-challenge and post where 'post-diluent, pre-allergen challenge' included 2 hrs 10 min, 2 hrs 25 min and 2 hrs 40 min post PF-03654746/placebo dose at each intervention period and 'post-allergen challenge' included 2 hrs 55 min, 3 hrs 10 min and 3 hrs 25 min post PF-03654746/placebo dose at each intervention period.	2 hrs 10 min, 2 hrs 25 min, 2 hrs 40 min post dose (Baseline); 2 hrs 55 min, 3 hrs 10 min, 3 hrs 25 min post dose on Day 1 of each intervention period

Other Outcome Measures

Outcome Measure	Measure Description	Time Frame
Serum PF-03654746 Concentration	Only participants receiving PF-03654746 were analyzed for this outcome measure. Mean serum concentration of PF-03654746 was calculated of each intervention period.	1 hr 30 min post dose on Day 1 of each intervention period

Collaborators and Investigators

• Sponsor: Pfizer

Publications and helpful links

Helpful Links

• To obtain contact information for a study center near you, click here.

Study record dates

Study Major Dates

• Study Start: December 1, 2007
• Primary Completion (Actual): August 1, 2008
• Study Completion (Actual): August 1, 2008

Study Registration Dates

• First Submitted: November 19, 2007
• First Submitted That Met QC Criteria: November 19, 2007
• First Posted (Estimate): November 21, 2007

Study Record Updates

• Last Update Posted (Estimate): April 16, 2014
• Last Update Submitted That Met QC Criteria: March 10, 2014
• Last Verified: March 1, 2014

More Information

Terms related to this study

• 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; Physiological Effects of Drugs; Neurotransmitter Agents; Molecular Mechanisms of Pharmacological Action; Anti-Allergic Agents; Histamine H1 Antagonists; Histamine Antagonists; Histamine Agents; Histamine H1 Antagonists, Non-Sedating; Fexofenadine; Terfenadine
• Other Study ID Numbers: A8801003