Target

PLK1

Serine/threonine-protein kinase PLK1

As of the edition of 20 October 2026, PLK1 (serine/threonine-protein kinase PLK1, UniProt P53350) has 10 drugs tested at it and 10 companies on the list, 7 on route A and 0 on route B.

Sources: UniProt, ClinicalTrials.gov, ChEMBL, FDA Orange Book and Purple Book, Pharos.

The protein

UniProt
P53350
How well studied
Chemical tools exist; no approved drug acts on it
Where it sits in the cell
Inside the cell
Solved structures
85
Disease areas
Cancer; Blood and lymph; Digestive system; Hormones; Immune system; Lungs and airways; Skin and connective tissue; Urinary and reproductive
Registered trials of its drugs
60

Drugs at this target

StatusCount
Active2
Went quiet5
Stopped3
Total10
DrugStatusFurthest phaseUS protection
VolasertibWent quietPhase 3none listed
OnvansertibActivePhase 2none listed
BI-2536StoppedPhase 2none listed
TKM-080301Went quietPhase 2none listed
CYC140StoppedPhase 2none listed
CafusertibWent quietPhase 1none listed
BAL0891ActivePhase 1none listed
GSK-461364Went quietPhase 1none listed
MK-1496Went quietPhase 1none listed
TAK-960StoppedPhase 1none listed

10 of 10 drugs, the most tested first.

Companies at this target

Where the company standsCompanies
Route A7
Engaged3
Total on the list10
Three companies on route A or B, with the route only
CompanyRoute
Boehringer IngelheimRoute A
TakedaRoute A
Cyclacel PharmaceuticalsRoute A

The other 7 companies at PLK1

In the product

10 companies in all; 7 are not named here, and no score is.

See the 10 companies at PLK1, ranked, with the facts behind eachRequest access. Nothing is shown until you do.