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Doxycycline Intervention for Bacterial STI ChemoprOphylaxis (DISCO)
Sponsor: Jonathan Troy Grennan
Summary
There is a growing epidemic of the bacterial sexually transmitted infections (STIs) syphilis, chlamydia and gonorrhea worldwide; similarly concerning trends have been noted in Canada, where increases of over 160% have been seen in bacterial STIs over the last decade. In Canada, gay, bisexual, and other men who have sex with men (gbMSM) - including those living with HIV - are disproportionately impacted by bacterial STIs5,6These dramatic increases in bacterial STIs, the potential development of serious complications including AMR, and waning effectiveness of the promotion of conventional STI prevention tools (e.g. condoms), signals the need for novel STI prevention strategies and tools to mitigate STI-related complications. A rigorous randomized controlled trial will be conducted to compare STI PrEP vs. STI PEP and definitively assess the efficacy, safety, antimicrobial resistance profiles and costs associated with doxycycline-based STI prevention.
Official title: A Randomized Trial of Doxycycline Chemoprophylaxis for the Prevention of Sexually Transmitted Infections in Gay, Bisexual and Other Men Who Have Sex With Men (gbMSM)
Key Details
Gender
MALE
Age Range
18 Years - Any
Study Type
INTERVENTIONAL
Enrollment
560
Start Date
2023-06-02
Completion Date
2027-06-30
Last Updated
2024-08-05
Healthy Volunteers
No
Conditions
Interventions
Doxycycline Hyclate
STI PrEP arm: doxycycline capsules 100mg orally daily for 12 months STI PEP arm: doxycycline 200mg orally once within 24-72 hours following each sexual encounter deemed at risk (i.e. condomless anal or oral sex), to a maximum of six pills (i.e. 600 mg total) per week
Locations (6)
Sheldon Chumir Centre
Calgary, Alberta, Canada
BC Centre for Disease Control
Vancouver, British Columbia, Canada
St. Joseph's Healthcare Hamilton
Hamilton, Ontario, Canada
The Ottawa Hospital
Ottawa, Ontario, Canada
St. Michael's Hospital
Toronto, Ontario, Canada
McGill University Health Centre
Montreal, Quebec, Canada