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Elucidation of the mechanism of oral tolerance induction to the transgenic rice containing peptides from Japanese cedar pollen allergens and the efficacy of long-term administration.

Elucidation of the mechanism of oral tolerance induction to the transgenic rice containing peptides from Japanese cedar pollen allergens and the efficacy of long-term administration. - Elucidation of the mechanism of oral tolerance induction to the transgenic rice containing peptides from Japanese cedar pollen allergens and the efficacy of long-term administration.

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000034280
Enrollment
45
Registered
2018-09-26
Start date
2016-11-01
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

Evaluation of the efficacy of oral administration group of 20g of transgenic rice for 24 weeks Evaluation of the efficacy of oral administration group of 5g of transgenic rice for 24 weeks Evaluat

Sponsors

The Jikei University School of Medicine
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1) Adult aged over 20years old and under 70years old and lives or works near The Jikei University School of Medicine. 2) A person who has allergic symptoms such as sneezing, running nose, and nasal obstruction. 3) A person who gives a positive result in provocative test and intradermal test (please refer to appendix for an assessment procedures) 4) Cedar pollen allergen-specific IgE antibody values over Class II. 5) Cypress specific IgE antibody values under Class IV. 6) Stimulation index of T-cell response to allergens over 2.0.

Exclusion criteria

Exclusion criteria: 1) A person who is allergic to Rice or has a history of Rice allergy. 2) A person who shows House dust specific IgE antibody valued over Class V, and has chronic rhinitis 3) A person who is imperative to use medicine such as anti-allergic agent and steroidal chemicals that potentially influence the outcome of evaluation. 4) A person who underwent an operation that is accompanied to nasal disorder within last 2years, or has nasal disorder such as acute/chronic-rhinitis, rhinopolypus, hypertronic rhinitis, septal deviation, sinusitis which all are potentially hinder to the outcome of evaluation. 5) A person who has any disorders under treatment and the condition is unstable that trial investigator has asessed as mismatched participant. 6) A person who has a history of serious disorder such as diabetes, hepatic disorder, kidney disorder, and cardiac disorder. 7) A person who takes beta-blocker in order to treat complecating disorders such as hypertension, and / or cardiac disorder. 8) A person who takes alpha-blocker in order to treat complecating disorders such as prostatic hyperplasia. 9) A person who is complecated by immunodeficiency disorder, cancer, or severe enemia. 10) A person who is complecated by asthma. 11) A person who has laboratory abnormalities in the pre-clinical test that trial investigator has assessed as mismatched participant. 12) A person already in another clinical test when this clinical test begins. 13) A person who is presently breastfeeding, pregnant, or planning/wishing to be a pregnant during a period of this clinical test. 14) A person whom trial investigator has asessed as mismatched participant.

Design outcomes

Primary

MeasureTime frame
Subjective symptoms -Scoring of allergy diaries between placebo group and transgenic rice group are compared

Secondary

MeasureTime frame
1.Surveys on lifestyles 2.JRQLQ 3.Intranasal observation with rhinoscopy 4.Intradermal reaction, number of nasal eosinophil, total serum IgE and cedar pollen-specific IgE 5.Immunological test:Evaluation of T-cell responses to 7crp, Cry j 1 and cry j 2. 6.Examination of height, weight, BMI,body temperature,blood pressure and pulse count 7.Safety (adverse events)

Countries

Japan

Contacts

Public ContactDaiya Asaka

The Jikei University School of Medicine Department of Otorhinolaryngology

asaka@jikei.ac.jp03-3433-1111

Outcome results

None listed

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