- Conditions
- Drug Allergy, Cephalosporin Allergy, Drug Hypersensitivity, Antibiotic Allergy, Beta Lactam Adverse Reaction, Drug-Induced Anaphylaxis, Cephalosporin Reaction
- Interventions
- Beta-lactam antibiotic (cefazolin, cefuroxime, cefotaxime, ceftazidime, ceftriaxone, cefepime, pre-pen, penicillin G, ampicillin, and histamine) double-blind skin testing, Culprit cephalosporin (cefazolin, ceftazidime, ceftriaxone, cefepime, cephalexin, cefaclor, cefadroxil, cefuroxime, cefpodoxime, cefdinir, or cefixime) double-blind placebo-controlled drug challenge, Similar cephalosporin (cefepime, ceftriaxone, cefaclor, cephalexin, cefixime, or cefdinir) antibiotic double-blind placebo-controlled drug challenge, Dissimilar cephalosporin (ceftriaxone or cefazolin) antibiotic double-blind placebo-controlled drug challenge, Amoxicillin double-blind placebo-controlled drug challenge
- Drug
- Lead sponsor
- Massachusetts General Hospital
- Other
- Eligibility
- 18 Years to 70 Years
- Enrollment
- 300 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2025 – 2028
- U.S. locations
- 6
- States / cities
- Scottsdale, Arizona • San Francisco, California • Boston, Massachusetts + 3 more
Source: ClinicalTrials.gov public record
Updated Mar 18, 2026 · Synced May 21, 2026, 9:50 PM EDT