Live from ClinicalTrials.gov + Open Targets, fetched 2026-11-11 16:07 UTC. Every row links to its source record.
Postmortem · what the sponsor and named sources said, kept apart from what merely happened at the same time
PF-06804103 Dose Escalation in HER2 Positive and Negative (Negative Only in Part 2) Solid Tumors
NCT03284723 · Pfizer · PHASE1 · terminated · last registry update 2024-09-03 · Breast cancer · Decision brief
No research has been run for this trial yet, so only the registry's own reason and the timeline are shown.
What was said, and by whom
Stated is the sponsor's own words; Reported is a named third party. The category is our label from a fixed list; the quote is the evidence.
| Kind | Quote | Our category | Source |
|---|---|---|---|
| Stated | “The trial was terminated based on the stage in drug development and assessment of PF-06804103 relative to the leading external competition. The decision was not due to a safety concern.” | – | Registry record, Pfizer |
Also happening at the time. Not shown to be a cause.
No drug target was found for this trial's interventions, so there is no same-target timeline.
What is not public
- Internal portfolio and board discussions
- Unpublished trial data and interim analyses
- Terms of any partner or licence decision