Head-to-head evidence
CL-197 vs Ulonivirine
Same mechanism, same race: design-graded trial evidence for both assets, with the grading rationale shown. Grades describe the quality of the evidence, never the merits of either security.
HIV
Shared mechanism: HIV reverse transcriptase · full HIV pipeline
CL-197
Developed by Henan Genuine Biotech
NCT05944848 · Phase 1 · completed
The study randomly assigned healthy volunteers to active drug or matching placebo and blinded participants, care providers, investigators, and outcome assessors, which are the hallmarks of a well-controlled study. However, it tested only safety and drug levels in healthy volunteers rather than any HIV outcome, and results have not been posted.
Next expected readout: December 2026 · NCT07308782 (registry estimate)
Ulonivirine
Developed by Merck & Co.
NCT04564547 · Phase 2 · completed
Randomized, triple-masked phase 2b switch study of once-weekly islatravir plus ulonivirine in virologically suppressed HIV-1 infection (161 participants). All three primary endpoints are adverse-event rates reported descriptively; no efficacy comparison was posted as primary.
Next expected readout: August 2027 · NCT06891066 (registry estimate)
The full competitive landscape for each asset (every same-race competitor with aligned evidence, sortable) is on the asset pages: CL-197's landscape · Ulonivirine's landscape