Following this puts new work involving it at the top of your briefing, with a note saying why it is there. Links are taken from the source record, never inferred.
Small randomized controlled trial with completed enrollment but no results posted; design is sound but sample size is modest and outcome is a disease-specific severity score rather than a validated clinical endpoint.
This is an active, unpublished trial registration examining an exploratory combination strategy (allopurinol plus sertraline) for depression; no results are reported and the design is early-phase Phase 2/3.