PF-03654764
As of the edition of 20 October 2026, PF-03654764 is a small molecule: stopped in 2010; acts on HRH3.
Sources: FDA Orange Book and Purple Book, other approval registers, ClinicalTrials.gov, ChEMBL.
The drug
- Status
- Stopped, 2010
- Kind
- Small molecule
- Registered trials
- 3, 1 stopped early
- Disease areas
- Ear, nose and throat; Immune system; Lungs and airways
US protection
No US approval on record.
With no US approval on record there are no listed US patents or exclusivities.
This is the US only.
Companies that need a new molecule because of this drug
1 company on route A because of this drug.
Companies on route A for this drug
In the product1 company is on route A because of PF-03654764.
See the 1 company on route A for this drug, with the facts behind eachRequest access. Nothing is shown until you do.
Target
| Gene | Protein | UniProt |
|---|---|---|
| HRH3 | Histamine H3 receptor | Q9Y5N1 |
Registered trials
| Phase | Trials | Completed | Active | Stopped early |
|---|---|---|---|---|
| Phase 1 | 2 | 1 | 0 | 1 |
| Phase 2 | 1 | 1 | 0 | 0 |
| All trials | 3 |
Who ran its trials
| Company | Role | Years |
|---|---|---|
| Pfizer | Lead sponsor of trials | 2009 to now |