Skip to content

Environmental exposure chamber (EEC) study of Japanese cedar pollen sublingual immunotherapy tablet in Japanese cedar pollinosis patients.

Environmental exposure chamber (EEC) study of Japanese cedar pollen sublingual immunotherapy tablet in Japanese cedar pollinosis patients.

Status
Active, not recruiting
Phases
Phase 4
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCT2031250165
Enrollment
55
Registered
2025-06-13
Start date
2025-07-03
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 pollinosis

Interventions

Investigational drug: CEDARCURE Japanese cedar pollen sublingual tablets Dosage and administration: same as instructions in the package insert Administration period: around 12 months

Sponsors

Ozaki Hideki
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: - Male or female aged between 18 and 64 years on the date informed consent is obtained. - Patients with Japanese cedar-specific IgE levels and Japanese cypress-specific IgE levels of class 2 or higher (>=0.7 UA/mL) in blood tests conducted on the screening visit or within 90 days before the screening visit. - Patients with allergic rhinitis of mild severity or greater during the Japanese cedar pollen season (February to April) and Japanese cypress pollen season (March to May) in 2024 and 2025. etc.

Exclusion criteria

Exclusion criteria: - Patients with Dermatophagoides pteronyssinus-specific IgE levels of class 5 or higher in blood tests conducted on the screening visit or within 90 days before the screening visit. - Patients with nasal symptoms (excluding symptoms induced by pollen exposure in the EEC) affecting assessment on nasal symptoms in the EEC on visits in the screening period (Visit 2 to Visit 6) - Patients with bronchial asthma or respiratory complications - Patients with complications of serious diseases of the brain, liver, kidney, heart, lung, gastrointestinal, hematological, endocrine, metabolic and psychiatric systems etc.

Design outcomes

Primary

MeasureTime frame
Change from baseline in TNSS120-180 assessed on day 2 of Japanese cedar pollen exposure [Time frame: Baseline to 1-year Japanese cedar pollen sublingual tablets administration] Note: TNSS (total nasal symptom score); sum of scores for sneezing, rhinorrhea, nasal obstruction and nasal itching., TNSS120-180; mean TNSS assessed at 120, 150 and 180 minutes of pollen exposure.

Secondary

MeasureTime frame
Key secondary endpoint: Change from baseline in TNSS120-180 assessed on day 3 of Japanese cypress pollen exposure [Time frame: Baseline to 1-year Japanese cedar pollen sublingual tablets administration]. Secondary endpoints: - Change from baseline in the following items assessed on day 2 of Japanese cedar pollen exposure or day 3 of Japanese cypress pollen exposure [Time frame: Baseline to 1-year Japanese cedar pollen sublingual tablets administration]. - TOSS120-180 - TNOSS120-180 - Mean of individual symptom score (sneezing, rhinorrhea, nasal obstruction, nasal itching, ocular itching/grittiness/redness and ocular tearing.) assessed at 120, 150 and 180 minutes of pollen exposure - Total number of sneezing during 3 hours of pollen exposure - Weight of nasal discharge during 3 hours of pollen exposure - Japanese Allergic rhinitis Standard Quality of Life Questionnaire (JRQLQ No. 1). [Time point: Japanese cedar pollen season, Japanese cypress pollen season] Note: TOSS (total ocular symptom score); sum of scores for ocular itching/grittiness/redness and ocular tearing., TNOSS (total nasal and ocular symptom score); sum of TNSS and TOSS., TOSS120-180/TNOSS120-180; mean TOSS/TNOSS assessed at 120, 150 and 180 minutes of pollen exposure.

Contacts

Public ContactHideki Ozaki

Torii Pharmaceutical Co., Ltd.

hideki.ozaki@torii.co.jp+81-80-1316-6898

Outcome results

None listed

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