Known targets — ChEMBL curated mechanism
The experimentally established mechanism targets of Hydroxychloroquine. 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 | |
|---|---|---|---|---|
| ▸ | TLR9 known ✓ | Q9NR96 | 1/20 | 1.00 |
| ▸ | TLR7 known ✓ | Q9NYK1 | 1/20 | 1.00 |
| ▸ | CHRM2 | P08172 | 2/20 | 1.00 |
| ▸ | CHRM4 | P08173 | 2/20 | 1.00 |
| ▸ | CHRM5 | P08912 | 2/20 | 1.00 |
| ▸ | ADRA2A | P08913 | 2/20 | 1.00 |
| ▸ | CHRM1 | P11229 | 2/20 | 1.00 |
| ▸ | ADRA2B | P18089 | 2/20 | 1.00 |
| ▸ | ADRA2C | P18825 | 2/20 | 1.00 |
| ▸ | CHRM3 | P20309 | 2/20 | 1.00 |
| ▸ | KCNH2 | Q12809 | 2/20 | 1.00 |
| ▸ | TMEM97 | Q5BJF2 | 2/20 | 1.00 |
| ▸ | SIGMAR1 | Q99720 | 2/20 | 1.00 |
| ▸ | ACE2 | Q9BYF1 | 2/20 | 1.00 |
| ▸ | LMNA | P02545 | 2/20 | 1.00 |
| ▸ | ADRA1D | P25100 | 1/20 | 1.00 |
| ▸ | CGAS | Q8N884 | 1/20 | 1.00 |
| ▸ | NR4A2 | P43354 | 2/20 | 0.86 |
| ▸ | CYP2D6 | P10635 | 1/20 | 0.86 |
| ▸ | CYP2C19 | P33261 | 1/20 | 0.86 |
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 | |
|---|---|---|---|---|
| Hydroxychloroquine SCHEMBL31023589 | 1.00 | CHRM2 (1.00) | CHRM2CHRM4CHRM5ADRA2ACHRM1 | |
| Hydroxychloroquine SCHEMBL29430237 | 1.00 | CHRM2 (1.00) | CHRM2CHRM4CHRM5ADRA2ACHRM1 | |
| Hydroxychloroquine SCHEMBL30107680 | 1.00 | CHRM2 (1.00) | CHRM2CHRM4CHRM5ADRA2ACHRM1 | |
| Hydroxychloroquine SCHEMBL6746375 | 1.00 | CHRM2 (1.00) | CHRM2CHRM4CHRM5ADRA2ACHRM1 | |
| Hydroxychloroquine SCHEMBL8623049 | 1.00 | CHRM2 (1.00) | CHRM2CHRM4CHRM5ADRA2ACHRM1 | |
| Hydroxychloroquine SCHEMBL29359553 | 1.00 | CHRM2 (1.00) | CHRM2CHRM4CHRM5ADRA2ACHRM1 | |
| Hydroxychloroquine SCHEMBL8170 | 1.00 | CHRM2 (1.00) | CHRM2CHRM4CHRM5ADRA2ACHRM1 | |
| Hydroxychloroquine SCHEMBL23854335 | 0.99 | CHRM2 (0.98) | CHRM2CHRM4CHRM5ADRA2ACHRM1 | |
| Hydroxychloroquine SCHEMBL4204503 | 0.99 | CHRM2 (0.98) | CHRM2CHRM4CHRM5ADRA2ACHRM1 | |
| Hydroxychloroquine SCHEMBL4742350 | 0.99 | CHRM2 (0.98) | CHRM2CHRM4CHRM5ADRA2ACHRM1 |
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 9035 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 |
|---|---|---|---|---|---|---|---|
| US-20260139860-A1 | PRODUCTS OF MANUFACTURE FOR THE TREATMENT, PREVENTION AND AMELIORATION OF MICROBIAL INFECTIONS | CENTRE FOR DIGESTIVE DISEASES (AU) | 2026-05-21 | — | — | US | claimed |
| EP-4680248-A1 | PRODUCTS OF MANUFACTURE AND THERAPEUTIC COMPOSITIONS FOR TREATING, AMELIORATING OR PREVENTING VIRAL INFECTIONS AND METHODS FOR MAKING AND USING THEM | Topelia Aust Limited (ACN 652 771 670) (AU) | 2026-01-21 | — | — | EP | claimed |
| EP-4673157-A2 | COMPOSITIONS FOR MODULATING GUT MICROFLORA POPULATIONS, TREATMENT OF DYSBIOSIS AND DISEASE PREVENTION, AND METHODS FOR MAKING AND USING SAME | Persephone Biosciences, Inc. (US) | 2026-01-07 | — | — | EP | claimed |
| WO-2025264805-A2 | SYNBIOTICS FOR MODULATING GUT MICROFLORA POPULATIONS, TREATMENT OF DYSBIOSIS AND DISEASE PREVENTION, AND METHODS FOR MAKING AND USING SAME | PERSEPHONE BIOSCIENCES, INC. (US) | 2025-12-26 | — | — | WO | claimed |
| WO-2025233557-A1 | SIGMA-1 RECEPTOR INHIBITING AGENTS FOR TREATING RHEUMATOID ARTHRITIS | UNIVERSIDAD DE GRANADA (ES) | 2025-11-13 | — | — | WO | claimed |
| EP-4637708-A2 | SEMIFLUORINATED ALKANE COMPOSITIONS COMPRISING HYOSCYAMINE | Novaliq GmbH (DE) | 2025-10-29 | — | — | EP | claimed |
| US-20250269005-A1 | METHODS FOR TREATING, AMELIORATING OR PREVENTING INFECTIONS USING DRUG AND VACCINATION COMBINATION TREATMENT | TOPELIA AUST LIMITED (ACN 652 771 670) (AU) | 2025-08-28 | — | — | US | claimed |
| WO-2024133913-A9 | SEMIFLUORINATED ALKANE COMPOSITIONS COMPRISING HYOSCYAMINE | NOVALIQ GMBH (DE) | 2025-03-20 | — | — | WO | claimed |
| US-20250075258-A1 | METHODS OF DETECTING SJOGREN'S SYNDROME USING SALIVARY EXOSOMES | EXOSOME DIAGNOSTICS, INC. | 2025-03-06 | — | — | US | claimed |
| US-20250049889-A1 | NEUROPROTECTIVE COMPOSITIONS AND USE THEREOF | NANONEURON THERAPEUTICS INC (US) | 2025-02-13 | — | — | US | claimed |
| WO-2001092288-A2 | COBALAMIN COMPOUNDS USEFUL AS ANTIBIOTIC AGENTS AND AS IMAGING AGENTS | MAYO FOUNDATION FOR MEDICAL EDUCATION AND RESEARCH (US) | 2001-12-06 | — | — | WO | claimed |
| CN-1297352-A | Use of organophosphorous compounds for the therapeutic and prophylactic treatment of infections | HASSAN JOMAA (DE) | 2001-05-30 | — | — | CN | claimed |
| CN-1294519-A | Pharmaceutical composition containing a compound having an activity of promoting the absorption of an active ingredient | INPHARMA SA (CH) | 2001-05-09 | — | — | CN | claimed |
| US-6187756-B1 | Composition and methods for treatment of neurological disorders and neurodegenerative diseases | THE MASSACHUSETTS INSTITUTE OF TECHNOLOGY | 2001-02-13 | — | — | US | claimed |
| CN-1255059-A | COX-2 selective carprofen for treating pain and inflammation in dogs | PFIZER (US) | 2000-05-31 | — | — | CN | claimed |
| CN-1251987-A | Dasage forms comprising separate portions of R- and S-enantiomers | DARWIN DISCOVERY LTD (GB) | 2000-05-03 | — | — | CN | claimed |
| US-5827681-A | Rapid detection and drug sensitivity of malaria | UNIVERSITY TECHNOLOGY CORPORATION (US) | 1998-10-27 | — | — | US | claimed |
| CN-1137748-A | Gas used as local and subcutaneous transmission carrier and microspheres filled with gas precursor | IMARX PHARMACEUTICAL CORP (US) | 1996-12-11 | — | — | CN | claimed |
| US-5314894-A | (S)-(+)-hydroxychloroquine | STERLING WINTHROP INC. (US) | 1994-05-24 | — | — | US | claimed |
| CN-1063221-A | POLYAMINE DRUG-RESIN COMPLEXES | RICHARDSON VICKS INC (US) | 1992-08-05 | — | — | CN | claimed |