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Placebo-controlled trial to compare the inhibitory and protective efficacy of epinastine hydrochloride on nasal symptoms, using a nasal provocation test with orchard grass pollen antigen disc in orchard grass pollinosis.

Placebo-controlled trial to compare the inhibitory and protective efficacy of epinastine hydrochloride on nasal symptoms, using a nasal provocation test with orchard grass pollen antigen disc in orchard grass pollinosis. - Inhibitory and protective efficacy of epinastine hydrochloride on nasal symptoms by nasal provocation test with orchard grass pollen antigen disc.

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000002721
Enrollment
16
Registered
2009-11-06
Start date
2009-11-01
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

Orchard grass pollinosis

Interventions

Epinastine hydrochloride tablet 20 mg is orally administered to subjects as single dose 60 minutes after the first nasal provocation with orchard grass pollen antigen disc. Matched placebo of epinast

Sponsors

Nippon Medical School
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: CAP-RAST score against orchard grass pollen over class 3 or greater within the last 3 years, and positive nasal provocation reaction to the orchard grass antigen disc on screening.

Exclusion criteria

Exclusion criteria: Subjects; 1) with a history of hypersensitivity to the components of epinastine hydrochloride tablet, 2) used steroids within one month of the start day of the clinical study, 3) within one week of the start day of the clinical study, used drugs that may affect the results of the clinical study (antihistamines, antiallergic drugs, vasoconstrictors), 4) without nasal response to the provocation by a history of laser therapy and/or nasal procedure for undergoing desensitization to orchard grass pollinosis, 5) with nasal diseases that affect the assessment of the nasal provocation reaction, such as acute chronic rhinitis, nasal polyps, hypertrophic rhinitis, deviated septum or sinusitis, 6) reactive to multiple antigens including pollens (cedar, mugwort) other than orchard grass, and had worsening of nasal symptoms when the nasal provocation test was conducted during the pollen dispersal season, 7) pregnancy, potential pregnancy, and breast-feeding mothers.

Design outcomes

Primary

MeasureTime frame
Effects of epinastine hydrochloride on nasal symptoms for nasal provocation test by orchard grass pollen antigen disc

Secondary

MeasureTime frame
Nasal finding score by rhinoscopy

Countries

Japan

Contacts

Public ContactYasushi Saito

Tokyo Clinical CRO Co, Ltd Clinical Development II

y-saito@tokyorinsho-cro.co.jp+81-3-5366-1720

Outcome results

None listed

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