Known targets — ChEMBL curated mechanism
The experimentally established mechanism targets of Letrozole. The predicted profile below is derived independently by chemical similarity — agreement is a validation signal, a miss is honest.
Predicted protein targets (top 7)
| gene | UniProt | supporting neighbours | confidence | |
|---|---|---|---|---|
| ▸ | CYP19A1 known ✓ | P11511 | 20/20 | 1.00 |
| ▸ | CYP3A4 | P08684 | 1/20 | 1.00 |
| ▸ | CYP11B1 | P15538 | 1/20 | 1.00 |
| ▸ | TSHR | P16473 | 1/20 | 1.00 |
| ▸ | CYP11B2 | P19099 | 1/20 | 1.00 |
| ▸ | CYP2C19 | P33261 | 1/20 | 1.00 |
| ▸ | STS | P08842 | 4/20 | 0.59 |
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 | |
|---|---|---|---|---|
| Letrozole SCHEMBL178028 | 1.00 | CYP19A1 (1.00) | CYP19A1CYP3A4CYP11B1TSHRCYP11B2 | |
| Letrozole SCHEMBL29079510 | 1.00 | CYP19A1 (1.00) | CYP19A1CYP3A4CYP11B1TSHRCYP11B2 | |
| Letrozole SCHEMBL5326636 | 1.00 | CYP19A1 (1.00) | CYP19A1CYP3A4CYP11B1TSHRCYP11B2 | |
| Letrozole SCHEMBL1026263 | 0.98 | CYP19A1 (0.97) | CYP19A1CYP3A4CYP11B1TSHRCYP11B2 | |
| Letrozole SCHEMBL28081077 | 0.98 | CYP19A1 (0.97) | CYP19A1CYP3A4CYP11B1TSHRCYP11B2 | |
| SCHEMBL19661207 | 0.92 | CYP19A1 (0.85) | CYP19A1CYP3A4CYP11B1TSHRCYP11B2 | |
| SCHEMBL5430341 | 0.92 | CYP19A1 (0.85) | CYP19A1CYP3A4CYP11B1TSHRCYP11B2 | |
| SCHEMBL13285157 | 0.92 | CYP19A1 (0.85) | CYP19A1CYP3A4CYP11B1TSHRCYP11B2 | |
| SCHEMBL10075551 | 0.92 | CYP19A1 (0.85) | CYP19A1CYP3A4CYP11B1TSHRCYP11B2 | |
| Letrozole SCHEMBL29046442 | 0.90 | CYP19A1 (0.81) | CYP19A1CYP3A4CYP11B1TSHRCYP11B2 |
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
Appears in 88386 patents — a generic fragment claimed broadly, so it's down-weighted as IP noise. Top by claim status then date:
| Patent | Title | Assignee | Published | Priority | Filing | Country | Status |
|---|---|---|---|---|---|---|---|
| EP-3607938-B1 | PHARMACEUTICAL COMPOSITION | SOVIC BRKICIC LJILJANA (HR) | 2026-05-27 | — | — | EP | claimed |
| EP-4748859-A2 | CHEMICALLY AND PHOTOCHEMICALLY INITIATED CELL MEMBRANE BLEBBING TO INDUCE CELL VESICLE PRODUCTION, MODIFICATIONS THEREOF, AND USES THEREOF | The Regents of the University of California (US) | 2026-05-27 | — | — | EP | claimed |
| CN-116209439-B | Cereblon protein modulators | Saint Jude Children's Research Hospital Ltd. (US) | 2026-05-26 | — | — | CN | claimed |
| US-20260137678-A1 | METHODS FOR TREATING OR PREVENTING NEUROENDOCRINE TUMOR FORMATION USING XPO1 INHIBITORS | MEMORIAL SLOAN-KETTERING CANCER CENTER (US) | 2026-05-21 | — | — | US | claimed |
| US-20260137685-A1 | SOLID PHARMACEUTICAL FORMULATION OF PARP INHIBITORS AND USE THEREOF | IMPACT THERAPEUTICS SHANGHAI INC (CN) | 2026-05-21 | — | — | US | claimed |
| WO-2026102563-A1 | DISUBSTITUTED PYRIMIDOPYRROLE ANALOG AND USE THEREOF | 深圳湾实验室坪山生物医药研发转化中心 | 2026-05-21 | — | — | WO | claimed |
| US-20260137686-A1 | SOLID PHARMACEUTICAL FORMULATION OF PARP INHIBITORS AND USE THEREOF | IMPACT THERAPEUTICS SHANGHAI INC (CN) | 2026-05-21 | — | — | US | claimed |
| WO-2026105121-A1 | ANTICANCER FORMULATIONS AND USES THEREOF | INTRAGEL THERAPEUTICS LTD. (IL) | 2026-05-21 | — | — | WO | claimed |
| EP-4743490-A1 | HUMANIZED ANTI-CD7 ANTIBODY | Christian-Albrechts-Universität zu Kiel (DE) | 2026-05-20 | — | — | EP | claimed |
| EP-3841097-B1 | 2,6-BIS(((1H-BENZO[D]IMIDAZOL-2-YL)THIO)METHYL)PYRIDINE AND N2,N6-DIBENZYLPYRIDINE-2,6-DICARBOXAMIDE DERIVATIVES AND RELATED COMPOUNDS AS PHOSPHOINOSITIDE 3-KINASE (PI3K) INHIBITORS FOR TREATING CANCER | BIOMEDICAL RES FOUNDATION OF THE ACADEMY OF ATHENS BRFAA (GR) | 2026-05-20 | — | — | EP | claimed |
| WO-2000037107-A2 | USE OF CYCLOOXYGENASE-2 INHIBITOR, A MATRIX METALLAPROTEINASE INHIBITOR, AN ANTINEOPLASTIC AGENT AND OPTIONALLY RADIATION AS A COMBINATION TREATMENT OF NEOPLASIA | G.D. SEARLE & CO. (US) | 2000-06-29 | — | — | WO | claimed |
| WO-2000020022-A1 | METHODS FOR THE TREATMENT OF CANCER USING CYTOKINES IN COMBINATION WITH LOW LEVEL DOSES OF CHEMOTHERAPY AND/OR RADIOTHERAPY | LT TECHNOLOGY COMPANY, LLC. (US) | 2000-04-13 | — | — | WO | claimed |
| WO-1999058126-B1 | USE OF NEOMYCIN FOR TREATING ANGIOGENESIS-RELATED DISEASES | ENDOWMENT RES INHUMAN BIOLOGY (US) | 2000-02-17 | — | — | WO | claimed |
| WO-1999058126-A1 | USE OF NEOMYCIN FOR TREATING ANGIOGENESIS-RELATED DISEASES | THE ENDOWMENT FOR RESEARCH IN HUMAN BIOLOGY, INC. (US) | 1999-11-18 | — | — | WO | claimed |
| US-5972921-A | UROGENITAL DISORDERS IN MALES | HORMOS MEDICAL OY LTD. (FI) | 1999-10-26 | — | — | US | claimed |
| WO-1999030708-A2 | USE OF AN AROMATASE INHIBITOR IN THE TREATMENT OF DECREASED ANDROGEN TO ESTROGEN RATIO AND DETRUSOR URETHRAL SPHINCTER DYSSYNERGIA IN MEN AND METHOD TO STUDY THE DYSSYNERGIA IN MALE RODENTS | HORMOS MEDICAL OY LTD. (FI) | 1999-06-24 | — | — | WO | claimed |
| WO-1999001118-A9 | ANTIOXIDANT ENHANCEMENT OF THERAPY FOR HYPERPROLIFERATIVE CONDITIONS | ATHEROGENICS INC (US) | 1999-05-20 | — | — | WO | claimed |
| WO-1999001118-A2 | ANTIOXIDANT ENHANCEMENT OF THERAPY FOR HYPERPROLIFERATIVE CONDITIONS | ATHEROGENICS, INC. (US) | 1999-01-14 | — | — | WO | claimed |
| WO-1997032589-A1 | COMBINATIONS FOR TREATMENT OF PROLIFERATIVE DISEASES | NOVARTIS AG (CH) | 1997-09-12 | — | — | WO | claimed |
| WO-1997032604-A1 | ANTIPROLIFERATIVE COMBINATIONS, CONTAINING RAF-TARGETED OLIGONUCLEOTIDES AND CHEMOTHERAPEUTIC COMPOUNDS | NOVARTIS AG (CH) | 1997-09-12 | — | — | WO | claimed |