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Geisinger Antibiotic Allergy Pilot Program: Assess and Address

NCT05464615 · Status: RECRUITING · Phase: EARLY_PHASE1 · Type: INTERVENTIONAL · Enrollment: 100

Last updated 2025-08-22

No results posted yet for this study

Summary

This is a prospective non-inferiority study to evaluate penicillin allergy history in patients with reported penicillin allergy, who require penicillin or penicillin-derivative antibiotic during inpatient admission using a focused questionnaire. A simplified scoring system will be assigned to patient responses, and the total score will be utilized to identify low-risk patients that have a minimal risk of allergic reactions on exposure to penicillin or its derivative. Patients determined to have low risk based on this questionnaire will be offered a test dose (graded challenge) of amoxicillin in a supervised setting, and if they tolerate it, penicillin allergy label will be removed from patient's chart. We hypothesize that at least 95% of low-risk patients will successfully pass the graded amoxicillin challenge so the penicillin allergy label can be removed from their charts. A proportion as low as 0.85 would be a good clinical outcome and considered non-inferior to the expected proportion of 0.95.

Conditions

  • Penicillin Allergy

Interventions

DRUG

Amoxicillin

We will initially administer 1/5th (56 mg) of the goal dose of amoxicillin (256 mg) by oral route following the procedure outlined below. The total goal dose to be administered is amoxicillin 256 mg (3.2 ml of 400 mg/5 ml). These were numbers that came about for significance in relabeling penicillin allergies in patients in previous studies.

Sponsors & Collaborators

  • Geisinger Clinic

    lead OTHER

Principal Investigators

  • Taesung Kwon, MD · Geisinger Clinic

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SEQUENTIAL

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2024-03-04
Primary Completion
2025-12-31
Completion
2025-12-31
FDA Drug
Yes

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT05464615 on ClinicalTrials.gov