Palbociclib
As of the edition of 20 October 2026, Palbociclib is a small molecule: marketed, first approved in 2015 (US); acts on CDK4 and CDK6; US protection ends in 2034.
Sources: FDA Orange Book and Purple Book, other approval registers, ClinicalTrials.gov, ChEMBL.
The drug
- Status
- Marketed; latest approval 2019
- Kind
- Small molecule
- Brand name
- Ibrance
- First approved
- 3 February 2015 (US)
- Approvals on record
- 15 in 5 regions
- Holder of the most recent approval
- Pfizer; 2 holders in all
- Registered trials
- 341, 40 stopped early
- Disease areas
- Cancer; Skin and connective tissue; Urinary and reproductive; Digestive system; Pregnancy and women's health; Blood and lymph
US protection
US protection ends in 2034.
The last listed US drug-substance patent ends in 2034. The application that gives this date is held by Pfizer.
This is the US only, and it is not the date generics or biosimilars can enter.
The exact date and the listings behind it
In the product30 listings count towards this date. The exact date and each listing are in the product.
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Companies that need a new molecule because of this drug
2 company-target rows on route B because of this drug.
Companies on route B for this drug
In the product2 company-target rows are on route B because of Palbociclib.
See the 2 company-target rows on route B for this drug, with the facts behind eachRequest access. Nothing is shown until you do.
Targets
Registered trials
| Phase | Trials | Completed | Active | Stopped early |
|---|---|---|---|---|
| Phase not stated | 46 | 25 | 10 | 2 |
| Phase 1 | 91 | 44 | 26 | 16 |
| Phase 2 | 164 | 58 | 64 | 18 |
| Phase 3 | 33 | 10 | 18 | 2 |
| Phase 4 | 7 | 3 | 0 | 2 |
| All trials | 341 |
Who has held its approvals
| Company | Role | Years |
|---|---|---|
| Pfizer | Originator, Applicant and Lead sponsor of trials | 2014 to now |