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Randomized, controlled, double-blinded clinical trial of oral Cry j1-galactomannan conjugate immunotherapy for Japanese cedar pollen allergy

Randomized, controlled, double-blinded clinical trial of oral Cry j1-galactomannan conjugate immunotherapy for Japanese cedar pollen allergy - RCT of Cry j1-galactomannan conjugate OIT for Japanese cedar pollen allergy

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000011995
Enrollment
60
Registered
2013-10-17
Start date
2013-10-17
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Japanese cedar pollen allergy

Interventions

Period of administration Late March from mid-January, 2014 Dose 1. Cry j1-galactomannan conjugate capsule 1 cap (187.5ug) 1 x 6 days 2. Cry j1-galactomannan conjugate capsule 2 cap (375ug) 2 x 6da

Sponsors

Department of Otorhinolaryngology, Graduate School of Medical Sciences, Kyushu University
Lead Sponsor
Biobusiness Propulsion Group, Biobusiness Propulsion Division, Wako Filter Technology Co., Ltd.
Collaborator

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: Inclusion criteria are described as follows: Participants are Japanese and otherwise healthy but had moderate or severe rhinoconjunctivitis due to JCP allergy and received pharmacological treatment for at least the last 3 consecutive cedar pollen seasons, and lived in and around the city of Fukuoka in Japan, where a similar amount of pollen spread would be expected. The diagnosis of JCP allergy was based on participant clinical history and serum Cry j1-specific IgE levels of score 2 or greater using the CAP-RAST.

Exclusion criteria

Exclusion criteria: Exclusion criteria were as follows: severe asthma, chronic sinusitis, previous immunotherapy or ongoing immunotherapy with other allergens, treatment with B-blockers or participants on continuous corticosteroids, pregnancy or planned pregnancy, participation in another clinical trial, and the standard contraindications for immunotherapy.

Design outcomes

Primary

MeasureTime frame
Total symptom and medication score is averaged total symptom score included 6 kinds of scores, which was 4 points in maximum value plus medication score. During the cedar pollen season, participants recorded their weekly symptoms of rhino conjunctivitis, which were evaluated on a scale from 0 to 4 in accordance with The Japanese Allergic Rhinitis QOL Standard Questionnaire No.1 (JRQLQ No1). The total symptom score is calculated as the sum of each component score as follows: none, 0; mild, 1; moderate, 2; severe, 3; and very severe, 4. Nasal and ocular symptoms covered by the questionnaire included runny nose, sneezing, nasal congestion, itchy nose, itchy eyes and watery eyes and averaged. The total medication score every week during the cedar pollen season is also calculated and averaged per day according to the Practical Guideline for the Management of Allergic Rhinitis, Japan. We determine oral immunotherapy using the Cry j1-galactomannan conjugate is effective if total symptom and medication score of active group is significantly suppressed compared with the placebo group.

Secondary

MeasureTime frame
Oral immunotherapy using the Cry j1-galactomannan conjugate starts about one month before Japanese cedar pollen season. Dose is gradually increased to maintenance dose over 18 days. Thereafter, oral immunotherapy is continued for 51 days.We analyze Adverse events based on Common Terminology Criteria for Adverse Events (CTCAE) in v4.0. which are recorded using the questionnaire during Oral immunotherapy to assess the safety. In addition, we assess the cellular components from PBMCs and antigen-specific IgE including cedar, cypress, house dust, and mites in the serum before and after pollen season. we also assess total symptom score, each symptom score, medication score, QOL using QOLscore in accordance with The Japanese Allergic Rhinitis QOL Standard Questionnaire No.1 (JRQLQ No1) and VAS through pollen season.

Countries

Japan

Contacts

Public ContactDaisuke Murakami

Graduate School of Medical Sciences, Kyushu University Otorhinolaryngology

muradai@qent.med.kyushu-u.ac.jp092-642-5668

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026