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PROlonged versus Single dose in PEnicillin oral Challenge Testing double-blind parallel randomized placebo cOntrolled tRial – PROSPECTOR-2 Study

Status
Recruiting
Phases
Phase 4
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2025-520888-41-00
Enrollment
160
Registered
2025-10-28
Start date
2025-12-10
Completion date
Unknown
Last updated
2025-10-28

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

Conditions

Penicillin allergy

Brief summary

Positive oral challenge (i.e. immune mediated reaction up to and including day 7 following the first test dose, number and percentage of participants), as adjudged by independent blinded panel

Detailed description

Positive oral challenge (i.e. immune mediated reaction up to and including day 14 following the first test dose, number and percentage of participants), as adjudged by independent blinded panel, Non-inferiority of single dose challenge to prolonged challenge (risk difference with two-sided 95% confidence interval using 10% as clinically relevant non-inferiority margin), Time to positive oral challenge, Quality of life (measured by Drug Hypersensitivity Quality of Life Questionnaire (DrHy-Q) at day 0 and 90

Interventions

DRUGCapsugel Belgium N.V Empty hard gelatin capsules size AA Elong
DRUGDB-caps Part number G7ECL000020 see IMPD
DRUGAmoxicillin

Sponsors

Gentofte Hospital, Austin Health
Lead SponsorOTHER

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Design outcomes

Primary

MeasureTime frame
Positive oral challenge (i.e. immune mediated reaction up to and including day 7 following the first test dose, number and percentage of participants), as adjudged by independent blinded panel

Secondary

MeasureTime frame
Positive oral challenge (i.e. immune mediated reaction up to and including day 14 following the first test dose, number and percentage of participants), as adjudged by independent blinded panel, Non-inferiority of single dose challenge to prolonged challenge (risk difference with two-sided 95% confidence interval using 10% as clinically relevant non-inferiority margin), Time to positive oral challenge, Quality of life (measured by Drug Hypersensitivity Quality of Life Questionnaire (DrHy-Q) at day 0 and 90

Countries

Belgium, Denmark

Outcome results

None listed

Source: EU CTIS · Data processed: Feb 4, 2026