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Study identifier: NCT06069141 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

Comparisons of Treatment Responses of Early Syphilis to Benzathine Penicillin G With or Without Doxycycline

Condition: Early Syphilis, Latent, Serological Relapse After Treatment  ·  Sponsor: National Taiwan University Hospital

PhaseNA
Planned participants688
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

This randomized controlled superiority study will be conducted during 2023-2025. The eligible participants are adult people living with HIV (PLWH) who are newly diagnosed with early syphilis. Participants will be randomized in a 1:1 ratio to receive single-dose benzathine penicillin G (BPG) (2.4 MU intramuscularly once) plus doxycycline (100 mg orally twice daily for 7 days) or single-dose BPG. The primary outcome is serologic response, defined as a decline of rapid plasma reagin (RPR) titer by 4-fold or greater, at week 24 and week 48; and the secondary outcomes include microbiologic response of syphilis and bacterial sexually transmitted infections (STIs) assessed by nucleic-acid amplification test (NAAT) at week 4.

This description comes directly from the study's public registry record.

Talk to the study team

Kuan-Yin Lin, MD  ·  +886-975607715  ·  kuanyin0828@gmail.com

Always discuss trial participation with your own doctor first.

Locations (9)

National Taiwan University Hospital Hsin-Chu BranchHsinchu, Taiwan, TaiwanRecruiting
Far Eastern Memorial HospitalTaipei, Taiwan, TaiwanRecruiting
National Taiwan University HospitalTaipei, Taiwan, TaiwanRecruiting
Taipei Vetetrans General HospitalTaipei, Taiwan, TaiwanRecruiting
Taoyuan General HospitalTaoyuan, Taiwan, TaiwanRecruiting
Kaohsiung Medical University Chung-Ho Memorial HospitalKaohsiung City, TaiwanRecruiting
Kaohsiung Veterans General HospitalKaohsiung City, TaiwanRecruiting
Chi Mei Medical HospitalTainan, TaiwanRecruiting
National Cheng-Kung University HospitalTainan, TaiwanRecruiting

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Source record: clinicaltrials.gov/study/NCT06069141