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500-mg Versus 1000-mg Ceftriaxone for Uncomplicated Gonorrhea Infection

500-mg Versus 1000-mg Ceftriaxone for Uncomplicated Gonorrhea Infection: A Noninferiority Randomized Controlled Trial

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07710118
Enrollment
400
Registered
2026-07-17
Start date
2026-07-01
Completion date
2029-06-01
Last updated
2026-07-17

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

Conditions

Gonorrhea Infection

Keywords

gonorrhea, sexually transmitted infection, PCR, ceftriaxone

Brief summary

This is a study to compare the treatment effect of different doses of ceftriaxone for gonorrhea.

Detailed description

This is a noninferiority randomized controlled trial to compare the treatment effect of 500-mg to 1000-mg of ceftriaxone for uncomplicated gonorrhea infection in men.

Interventions

DRUGceftriaxone 500-mg

single-dose ceftriaxone 500-mg intramuscular injection, dissolved in 2 mL of 1% lidocaine hydrochloride solution

DRUGceftriaxone 1000-mg

single-dose ceftriaxone 1000-mg intramuscular injection, dissolved in 3.5 mL of 1% lidocaine hydrochloride solution

Sponsors

National Taiwan University Hospital
Lead SponsorOTHER
National Taiwan University Hospital Hsin-Chu Branch
CollaboratorOTHER
Far Eastern Memorial Hospital
CollaboratorOTHER
National Taiwan University Hospital, Yun-Lin Branch
CollaboratorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
MALE
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* 18 years or older man, and * having oropharyngeal, anorectal or urogenital N. gonorrhoeae infection confirmed by culture or a positive NAAT

Exclusion criteria

* Suspicion of a complicated N. gonorrhoeae infection. Complicated N. gonorrhoeae infection is defined as the presence of epididymitis, arthritis, bacteremia, conjunctivitis, or disseminated gonococcal infection. * Use of systemic cephalosporins, doxycycline, or azithromycin at the screening visit or within 30 days prior to the enrollment visit is prohibited. Participants who require immediate antibiotic treatment at the screening visit, based on clinician judgment or shared decision-making with the participant, without awaiting PCR or culture confirmation, will be excluded from the study. Use of doxycycline for post-exposure prophylaxis (Doxy-PEP) is permitted. * A NAAT test positive for C. trachomatis or M. genitalium at the screening visit. * A history of allergy or intolerance to ceftriaxone, penicillins, or lidocaine, in alignment with the contraindications listed in the Sintrix (ceftriaxone) injection package insert. Allergy or intolerance is defined as the occurrence of adverse symptoms following antibiotic administration, including but not limited to skin rash, pruritus, dyspnea, angioedema, anaphylaxis, dizziness, nausea, vomiting, headache, or diarrhea. Laboratory abnormalities include cytopenias, eosinophilia, and elevated levels of aspartate aminotransferase (AST), alanine aminotransferase (ALT), total bilirubin, or creatinine. Penicillins include natural penicillins (e.g., penicillin G), aminopenicillins (e.g., amoxicillin, ampicillin), penicillinase-resistant penicillins (e.g., oxacillin, dicloxacillin), extended-spectrum penicillins (e.g., piperacillin), and other agents classified within the penicillin class.

Design outcomes

Primary

MeasureTime frameDescription
Treatment response of UGIFrom enrollment to 14 days after treatmentThe proportion of participants with successful treatment of UGI, defined as a NAAT-negative and, if applicable, a culture-negative result of the primary anatomic sites of infection 7-14 days after treatment; a culture-negative result is required only if N. gonorrhoeae culture was positive at the screening visit.

Secondary

MeasureTime frameDescription
Symptom durationFrom enrollment to 14 days after treatmentSymptom duration, including dysuria, genital discharge, sore throat, anorectal pain, rectal bleeding, and rectal discharge, in the subgroup of patients who have baseline symptoms attributable to UGIs.
Treatment-related adverse eventsFrom enrollment to 14 days after treatmentTreatment-related adverse events until 14 days after treatment.
MIC of ceftriaxone of isolatesFrom enrollment to 14 days after treatmentMIC of ceftriaxone of isolates at screening and test-of-cure (TOC) visits.
NG-MASTFrom enrollment to 14 days after treatmentNG-MAST at screening and TOC visits.
Gene mutations associated with drug resistance for extended-spectrum cephalosporinsFrom enrollment to 14 days after treatmentGene mutations associated with drug resistance for extended-spectrum cephalosporins at screening and TOC visits.

Countries

Taiwan

Contacts

CONTACTTzong-Yow Wu, M.D.
retep0102@gmail.com886+933594074

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jul 18, 2026