Known targets — ChEMBL curated mechanism
The experimentally established mechanism targets of Niraparib. The predicted profile below is derived independently by chemical similarity — agreement is a validation signal, a miss is honest.
Predicted protein targets (top 20)
| gene | UniProt | supporting neighbours | confidence | |
|---|---|---|---|---|
| ▸ | PARP1 known ✓ | P09874 | 20/20 | 1.00 |
| ▸ | PARP2 known ✓ | Q9UGN5 | 11/20 | 1.00 |
| ▸ | PARP3 | Q9Y6F1 | 10/20 | 1.00 |
| ▸ | TNKS | O95271 | 1/20 | 1.00 |
| ▸ | CHRM2 | P08172 | 1/20 | 1.00 |
| ▸ | CHRM1 | P11229 | 1/20 | 1.00 |
| ▸ | SLC6A2 | P23975 | 1/20 | 1.00 |
| ▸ | SLC6A4 | P31645 | 1/20 | 1.00 |
| ▸ | ADRA1A | P35348 | 1/20 | 1.00 |
| ▸ | SLC6A3 | Q01959 | 1/20 | 1.00 |
| ▸ | KCNH2 | Q12809 | 1/20 | 1.00 |
| ▸ | DYRK1A | Q13627 | 1/20 | 1.00 |
| ▸ | PARP15 | Q460N3 | 1/20 | 1.00 |
| ▸ | PARP14 | Q460N5 | 1/20 | 1.00 |
| ▸ | PARP10 | Q53GL7 | 1/20 | 1.00 |
| ▸ | PARP12 | Q9H0J9 | 1/20 | 1.00 |
| ▸ | TNKS2 | Q9H2K2 | 1/20 | 1.00 |
| ▸ | PARP4 | Q9UKK3 | 1/20 | 1.00 |
| ▸ | DYRK1B | Q9Y463 | 1/20 | 1.00 |
| ▸ | HRH3 | Q9Y5N1 | 1/20 | 1.00 |
Click a target to see other patent compounds predicted against it — the reverse direction, in place.
Similar compounds — the chemically nearest patent molecules
Nearest neighbours by Morgan-fingerprint cosine across the patent-compound collection, with each neighbour's top predicted target and the predicted targets it shares with this molecule.
| Compound | similarity | top predicted | shared targets | |
|---|---|---|---|---|
| Niraparib SCHEMBL1422151 | 1.00 | PARP1 (1.00) | PARP1PARP2PARP3TNKSCHRM2 | |
| Niraparib SCHEMBL1421875 | 1.00 | PARP1 (1.00) | PARP1PARP2PARP3TNKSCHRM2 | |
| Niraparib SCHEMBL1422061 | 0.99 | PARP1 (0.98) | PARP1PARP2PARP3TNKSCHRM2 | |
| Niraparib SCHEMBL567839 | 0.99 | PARP1 (0.98) | PARP1PARP2PARP3TNKSCHRM2 | |
| Niraparib SCHEMBL28370623 | 0.99 | PARP1 (0.98) | PARP1PARP2PARP3TNKSCHRM2 | |
| Niraparib SCHEMBL567840 | 0.99 | PARP1 (0.98) | PARP1PARP2PARP3TNKSCHRM2 | |
| Niraparib SCHEMBL3737274 | 0.96 | PARP1 (0.92) | PARP1PARP2PARP3TNKSCHRM2 | |
| Niraparib SCHEMBL3737277 | 0.96 | PARP1 (0.92) | PARP1PARP2PARP3TNKSCHRM2 | |
| Niraparib SCHEMBL3740349 | 0.95 | PARP1 (0.91) | PARP1PARP2PARP3TNKSCHRM2 | |
| Niraparib SCHEMBL3659848 | 0.94 | PARP1 (0.89) | PARP1PARP2PARP3TNKSCHRM2 |
Similarity is cosine over the 2,048-bit Morgan fingerprint (≈ Tanimoto). Identical fingerprints score 1.00.
Patent provenance — the patents this molecule appears in, and who filed them
Claimed or disclosed in 118 patents — showing the first 20. claimed = in the patent's claims; disclosed = body only.
| Patent | Title | Assignee | Published | Priority | Filing | Country | Status |
|---|---|---|---|---|---|---|---|
| WO-2023069727-A1 | COMPOSITIONS AND METHODS FOR TREATMENT OF HYPERPROLIFERATIVE, INFLAMMATORY, AND IMMUNOLOGICAL DISEASES, AND INFECTIONS | EDISON ONCOLOGY (US) | 2023-04-27 | — | — | WO | claimed |
| EP-3536690-A1 | AMIDE SUBSTITUTED INDAZOLES AS POLY(ADP-RIBOSE)POLYMERASE (PARP) INHIBITORS | MSD Italia S.r.l. (IT) | 2019-09-11 | — | — | EP | claimed |
| US-20190175541-A1 | USE OF DIANHYDROGALACTITOL OR DERIVATIVES OR ANALOGS THEREOF FOR TREATMENT OF PEDIATRIC CENTRAL NERVOUS SYSTEM MALIGNANCIES | DELMAR PHARMACEUTICALS, INC. (CA) | 2019-06-13 | — | — | US | claimed |
| EP-2805945-B1 | Amide substituted indazoles as poly(ADP-ribose)polymerase (PARP) inhibitors | MSD ITALIA SRL (IT) | 2019-04-03 | — | — | EP | claimed |
| US-20190091195-A1 | USE OF DIANHYDROGALACTITOL AND DERIVATIVES THEREOF IN THE TREATMENT OF GLIOBLASTOMA, LUNG CANCER, AND OVARIAN CANCER | DEL MAR PHARMACEUTICALS (CA) | 2019-03-28 | — | — | US | claimed |
| WO-2017075052-A1 | USE OF DIANHYDROGALACTITOL OR DERIVATIVES OR ANALOGS THEREOF FOR TREATMENT OF PEDIATRIC CENTRAL NERVOUS SYSTEM MALIGNANCIES | DELMAR PHARMACEUTICALS, INC. (CA) | 2017-05-04 | — | — | WO | claimed |
| WO-2017042634-A2 | USE OF DIANHYDROGALACTITOL OR DERIVATIVES AND ANALOGS THEREOF FOR TREATMENT OF NON-SMALL-CELL LUNG CARCINOMA, GLIOBLASTOMA, AND OVARIAN CARCINOMA BY INDUCTION OF DNA DAMAGE AND STALLING OF CELL CYCLE | DEL MAR PHARMACEUTICALS (CA) | 2017-03-16 | — | — | WO | claimed |
| CN-106432187-A | Chiral resolution method of 2-[4-(-3-piperidyl)phenyl]-2H-indazole-7-formamide | 青岛云天生物技术有限公司 | 2017-02-22 | — | — | CN | claimed |
| CN-106432188-A | Preparation method of anti-cancer drug 2-[4-((3S)-3-Piperidinyl) phenyl]-2H-Indazole-7-Formamide | 青岛辰达生物科技有限公司 | 2017-02-22 | — | — | CN | claimed |
| US-8071623-B2 | Anticancer, antiinflammatory, antitumor agents, diabetes, neurodegenerative diseases, retroviral infection, retinal damage or skin senescence and UV-induced skin damage; protecting against the toxicity of chemotherapy; 2-(4-Piperidin-3-ylphenyl)2H-indazole-7-carboxamide | INSTITUTO DI RICERCHE DI BIOLOGIA MOLECOLARE P. ANGELETTI SPA | 2011-12-06 | — | — | US | claimed |
| EP-2336120-A1 | Combinations containing amide substituted indazoles as poly(ADP-ribose)polymerase (PARP) inhibitors | Istituto di ricerche di Biologia Molecolare P. Angeletti S.R.L. (IT) | 2011-06-22 | — | — | EP | claimed |
| EP-2109608-B1 | AMIDE SUBSTITUTED INDAZOLES AS POLY(ADP-RIBOSE)POLYMERASE (PARP) INHIBITORS | ANGELETTI P IST RICHERCHE BIO (IT) | 2011-03-23 | — | — | EP | claimed |
| EP-2109608-A1 | AMIDE SUBSTITUTED INDAZOLES AS POLY(ADP-RIBOSE)POLYMERASE (PARP) INHIBITORS | Istituto di Richerche di Biologia Molecolare P. Angeletti S.p.A. (IT) | 2009-10-21 | — | — | EP | claimed |
| WO-2008084261-A1 | AMIDE SUBSTITUTED INDAZOLES AS POLY(ADP-RIBOSE)POLYMERASE (PARP) INHIBITORS | ISTITUTO DI RICERCHE DI BIOLOGIA MOLECOLARE P. ANGELETTI SPA (IT) | 2008-07-17 | — | — | WO | claimed |
| US-20080167345-A1 | Anticancer, antiinflammatory, antitumor agents, diabetes, neurodegenerative diseases, retroviral infection, retinal damage or skin senescence and UV-induced skin damage; protecting against the toxicity of chemotherapy; 2-(4-Piperidin-3-ylphenyl)2H-indazole-7-carboxamide | MERCK SHARP & DOHME LLC | 2008-07-10 | — | — | US | claimed |
| US-20260144794-A1 | THERAPEUTIC COMPOSITIONS AND METHODS FOR TREATING CANCERS | Pattern Computer, Inc. (US) | 2026-05-28 | — | — | US | disclosed |
| EP-4429642-B1 | NIRAPARIB PARTICLES AND USES THEREOF | CRITITECH INC (US) | 2026-04-29 | — | — | EP | disclosed |
| EP-2109608-A1 | AMIDE SUBSTITUTED INDAZOLES AS POLY(ADP-RIBOSE)POLYMERASE (PARP) INHIBITORS | Istituto di Richerche di Biologia Molecolare P. Angeletti S.p.A. (IT) | 2009-10-21 | — | — | EP | disclosed |
| WO-2008084261-A1 | AMIDE SUBSTITUTED INDAZOLES AS POLY(ADP-RIBOSE)POLYMERASE (PARP) INHIBITORS | ISTITUTO DI RICERCHE DI BIOLOGIA MOLECOLARE P. ANGELETTI SPA (IT) | 2008-07-17 | — | — | WO | disclosed |
| US-20080167345-A1 | Anticancer, antiinflammatory, antitumor agents, diabetes, neurodegenerative diseases, retroviral infection, retinal damage or skin senescence and UV-induced skin damage; protecting against the toxicity of chemotherapy; 2-(4-Piperidin-3-ylphenyl)2H-indazole-7-carboxamide | MERCK SHARP & DOHME LLC | 2008-07-10 | — | — | US | disclosed |
Patent text — is the patent's own abstract consistent with the prediction?
For each of this compound's patents that has machine-readable text (4 of them — usually the abstract, not the full specification), we ask MedCPT which protein the text reads most about, and where the chemistry-predicted target lands among 4885 human targets. A high rank means the patent's own wording is consistent with the prediction — a weak, independent signal, not proof of activity.
| Patent | Title | Text reads most about | Predicted target · text-rank |
|---|---|---|---|
| US-20260144794-A1 | THERAPEUTIC COMPOSITIONS AND METHODS FOR TREATING CANCERS | FLT3, BRAF, ERBB2 | PARP1 613/4885PARP2 318/4885PARP3 90/4885 |
| US-20190175541-A1 | USE OF DIANHYDROGALACTITOL OR DERIVATIVES OR ANALOGS THEREOF FOR TREATMENT OF PEDIATRIC CENTRAL NERVOUS SYSTEM MALIGNANCIES | DCK, CDC7, DNMT1 | PARP1 418/4885PARP2 422/4885PARP3 932/4885 |
| US-20080167345-A1 | Anticancer, antiinflammatory, antitumor agents, diabetes, neurodegenerative diseases, retroviral infection, retinal damage or skin senescence and UV-induced skin damage; protecting against the toxicity of chemotherapy; 2-(4-Piperidin-3-ylphenyl)2H-indazole-7-carboxamide | PARP1, PARP2, PARP11 | PARP1 1/4885PARP2 2/4885PARP3 4/4885 |
| US-20190091195-A1 | USE OF DIANHYDROGALACTITOL AND DERIVATIVES THEREOF IN THE TREATMENT OF GLIOBLASTOMA, LUNG CANCER, AND OVARIAN CANCER | DDOST, DCLRE1A, OGG1 | PARP1 248/4885PARP2 196/4885PARP3 639/4885 |
“Text reads most about” is the patent abstract's nearest protein in MedCPT space (background-debiased). Only ~1.4% of patents have machine-readable text, so most compounds won't have this panel.