Phase 4
Completed N=64
Syphilis Response to Higher Penicillin Dosage: The 2.4 Versus 7.2 Study
Source: ClinicalTrials.gov NCT02611765 ↗Enrolled (actual)
64
Serious AEs
0.0%
Results posted
Apr 2016
Primary outcomePrimary: Treatment Success Defined as a Decrease in Rapid Plasma Reagin (RPR) Titer of >= 2 Dilutions (4-fold) — 27; 28 participants
◆ Published Evidence
Established
34citations · ~4 / year
Single Dose Versus 3 Doses of Intramuscular Benzathine Penicillin for Early Syphilis in HIV: A Randomized Clinical Trial.
Summary
Syphilis remains a significant health problem worldwide, with an estimated 10.6 million new cases per year. Due to shared transmission route and risk factors, co-infection with syphilis and Human Immunodeficiency Virus (HIV) is not uncommon. Several studies have evaluated the response to syphilis treatment in HIV-infected patients. They support the claim that patients with HIV have a slower decrease in syphilis antibody titers, and that they may progress to neurosyphilis in earlier stages.
The Center for Disease Control and Prevention's Sexually Transmitted Disease Treatment Guidelines has advocated treating HIV-infected patients who have primary, secondary syphilis or early latent syphilis with the same doses of penicillin as for HIV-uninfected patients (single dose of 2.4 million units of benzathine penicillin G). The investigators designed a randomized controlled trial in order to compare the efficacy of three- versus single-dosed regimens of intramuscular benzathine penicillin G (BPG) for the treatment of early syphilis in HIV-infected patients.
Linked Publications
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Single Dose Versus 3 Doses of Intramuscular Benzathine Penicillin for Early Syphilis in HIV: A Randomized Clinical Trial.
Outcome Measures
| Outcome | Result | p-value |
|---|---|---|
| PRIMARY Treatment Success Defined as a Decrease in Rapid Plasma Reagin (RPR) Titer of >= 2 Dilutions (4-fold) |
27; 28 | — |
Eligibility Criteria
Inclusion Criteria
- Diagnosed with HIV by ELISA and confirmed by Western blot
- Positive Rapid Plasma Reagin and treponema pallidum particle agglutination tests
Exclusion Criteria
- History of penicillin allergy
- Diagnosis of late latent syphilis
- Diagnosis of neurosyphilis
- Antibiotic use with significant activity against Treponema pallidum within the preceding two weeks
Data sourced from ClinicalTrials.gov (NCT02611765) and the linked publication. Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication. Informational only — not medical advice.