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TO-211 Phase III Clinical Study

TO-211 Phase III Clinical Study - Confirmation of concordance compared with skin test results using Allergen Scratch Extract "Torii" Alternaria -

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCT2031250355
Enrollment
50
Registered
2025-09-10
Start date
2025-10-26
Completion date
Unknown
Last updated
2026-09-14

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

Conditions

Allergic diseases caused by Alternaria

Interventions

TO-211, comparater (Allergen Scratch Extract "Torii" Alternaria), negative control and positive control will be administered one drop at a time to the flexor side of the forearm of the subject. These

Sponsors

Kaneko Shinya
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: - Participants with either or both asthma or/and nasal allergy symptoms and have a history of treatment for allergic symptoms within the past 3 years. - Subjects who meet any of the following criteria: 1) Subjects who have Class 2 or higher Alternaria-specific IgE antibody test results within 3 years prior to the date of informed consent 2) Subjects who have not undergone an Alternaria specific IgE antibody test within 3 years prior to the date of informed consent

Exclusion criteria

Exclusion criteria: - Subjects with skin diseases, scars (including tattoos), and other treatment marks that may affect the evaluation of skin reactions on the flexor surface of the forearm on both sides - Subjects with a history of or concurrent machinery urticaria - Subjects with a history of serious drug allergy or those who have experienced systemic allergic symptoms in skin testing such as skin prick test(SPT), scratch tests, and intradermal tests in the past - Subjects who used the following medications on the day of SPT or the day before 1) B(beta) 2 agonists (but not including the use of inhalants) 2) Topical agents on the flexor surfaces of the forearms on both sides - Subjects who used the following drugs on the day of and within 7 days before SPT 1) Antihistamines (injection, oral, or topical application to the flexor surface of the forearm on both sides), including OTC drugs 2) Antipsychotics with antihistamine effects (chlorpromazine, levomepromazine, clozapine, olanzapine, etc.) 3) Adrenal corticosteroids (injection, oral or rectal) - Subjects with the use of long-term and high-dose systemic Adrenal corticosteroids (injection or oral) that may affect the immediate-type reactions in SPT - Subjects who used topical preparations containing the following ingredients at the flexor surfaces of the forearms on both sides on the day of and within 21 days before SPT 1) Adrenal corticosteroids (including OTC drugs) 2) Immunosuppressants - Subjects with asthma-like symptoms corresponding to moderate persistent or severer asthma according to Classification of asthma or childfood asthma severity on the day of and within 28 days before SPT - Patients with asthma showing a deteriorating trend of symptoms accompanied by seizure or dyspnea on the day of SPT

Design outcomes

Primary

MeasureTime frame
Diagnostic concordance of the TO-211 compared with the existing extract according to the acceptance criterion-1* *Acceptance criterion-1: A wheal with a longest diameter at least 2 times larger than the negative control or larger than 5 mm at 15 minutes after pricking is considered a positive reaction.

Secondary

MeasureTime frame
- Positive agreement between the TO-211 and comparator according to the acceptance criteria-1, 2, 3, 4, 5, and 6 - Diagnostic concordance of the TO-211 compared with the comparator according to the acceptance criteria-2, 3, 4, 5, and 6 - Negative agreement between the TO-211 and comparator according to the acceptance criteria-1, 2, 3, 4, 5, and 6 - Diagnostic concordance, positive agreement, and negative agreement of the TO-211 compared with the diagnosis based on the Alternaria-specific IgE antibody test (Class 2 or higher, or below Class 2)* according to the acceptance criteria-1, 2, 3, 4, 5, and 6 - Diagnostic concordance, positive agreement, and negative agreement of the TO-211 in subjects with concordant diagnosis between the skin test using the comparator and the Alternaria-specific IgE antibody test (Class 2 or higher, or below Class 2)* according to the acceptance criteria-1, 2, 3, 4, 5, and 6 *: Using results of Alternaria-specific IgE antibody tests conducted in this study - Comparison of the longest, shortest, and mean wheal diameters between the comparator and TO-211 - Comparison of the longest, shortest, and mean erythema diameters between the comparator and TO-211 - Diagnostic concordance, positive agreement, and negative agreement of the TO-211 according to acceptance criteria-3 and 5 as compared with acceptance criterion-1 - Diagnostic concordance, positive agreement, and negative agreement of the TO-211 according to acceptance criteria-4 and 6 as compared with acceptance criterion-2 *Acceptance criterion 1: A wheal with a longest diameter at least 2 times larger than the negative control or larger than 5 mm at 15 minutes after pricking is considered a positive reaction. 2: A wheal with a mean diameter at least 2 times larger than the negative control or larger than 5 mm at 15 minutes after pricking is considered a positive reaction. 3: A wheal with a longest diameter 3 mm or larger at 15 minutes after pricking is considered a positive reaction. 4:

Contacts

Public ContactShinya Kaneko

Torii Pharmaceutical Co.,Ltd

shinya.kaneko@torii.co.jp+81-80-1383-7582

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Sep 19, 2026