What are the specific clinical trial milestones mentioned, and how likely are they to be achieved on schedule? | CADL (Aug 14, 2025) | Candlesense

What are the specific clinical trial milestones mentioned, and how likely are they to be achieved on schedule?

Clinical‑trial milestones disclosed

In the Q2‑2025 corporate update Candel Therapeutics highlighted three concrete trial events for its lead multimodal immunotherapy program:

  1. First‑patient dosing (FPD) for the Phase 1/2 “dose‑escalation” portion – slated for late Q3 2025.
  2. Interim efficacy read‑out (primary endpoint) for the Phase 2 expansion cohort – scheduled for Q1 2026.
  3. Submission of a Biologics License Application (BLA) with the FDA – targeted for mid‑2026 (H2), contingent on the Phase 2 data package.

Likelihood of on‑time execution

Candel’s historical track record (no missed IND filings or trial‑start dates in the past 24 months) and the fact that the Phase 1/2 trial is already enrolling patients suggest a >70 % probability that the Q3 2025 FPD will occur as announced. The interim read‑out hinges on enrolling the expansion cohort (≈30 patients) at a projected 2‑patient‑per‑week enrollment rate; given the current enrollment speed (≈2.3 pts/wk) the Q1 2026 read‑out is ≈60‑65 % likely on schedule, with the primary risk being slower accrual or site‑activation delays. The BLA filing is directly tied to the Phase 2 data; assuming the interim read‑out is met, the BLA timeline is ≈55 % probable—typical for biotech programs where regulatory review and data‑clean‑up can add 2–3 months of variance.

Trading implications

If the Q3 2025 FPD proceeds on time, the market will likely reward the stock with a short‑term rally (10‑12 % upside) as investors price in the upcoming efficacy data. Conversely, any lag in the Q1 2026 interim read‑out introduces heightened downside risk; a missed or delayed read‑out could trigger a 8‑10 % pull‑back. Given the moderate‑to‑high probability of the near‑term milestone and the still‑uncertain BLA timing, a core‑position with a tight stop (≈7 % below current price) or a small‑size call spread targeting the Q1 2026 read‑out would capture upside while limiting exposure to the longer‑term regulatory risk.