Target

PARP1

Poly [ADP-ribose] polymerase 1

As of the edition of 20 October 2026, PARP1 (poly [ADP-ribose] polymerase 1, UniProt P09874) has 11 drugs tested at it and 16 companies on the list, 3 on route A and 6 on route B.

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

The protein

UniProt
P09874
How well studied
Drug target: an approved drug acts on it
Where it sits in the cell
Inside the cell
Solved structures
106
Disease areas
Cancer; Urinary and reproductive; Pregnancy and women's health; Hormones; Skin and connective tissue; Digestive system; Lungs and airways; Blood and lymph
Registered trials of its drugs
940

Drugs at this target

StatusCount
Marketed4
Active4
Stopped3
Total11
DrugStatusFurthest phaseUS protection
OlaparibMarketedPhase 4Ends 2028
NiraparibMarketedPhase 4Ends 2031
TalazoparibMarketedPhase 3Ends 2031
VeliparibStoppedPhase 3none listed
RucaparibMarketedPhase 3Ends 2031
PamiparibStoppedPhase 3none listed
SaruparibActivePhase 3none listed
SenaparibActivePhase 2none listed
2X-121ActivePhase 2none listed
AmelparibActivePhase 2none listed
E-7016StoppedPhase 2none listed

11 of 11 drugs, the most tested first.

Companies at this target

Where the company standsCompanies
Route A3
Route B6
Engaged4
Undetermined3
Total on the list16
Three companies on route A or B, with the route only
CompanyRoute
GSKRoute B
PfizerRoute B
AbbVieRoute A

The other 13 companies at PARP1

In the product

16 companies in all; 13 are not named here, and no score is.

See the 16 companies at PARP1, ranked, with the facts behind eachRequest access. Nothing is shown until you do.