Levonorgestrel
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Also known as Athentia nextEmerresEmerres unaEzinelleFallback soloHer styleIsterandaJadelleJaydessKyleenaLevonelleLevonelle one stepLevonelle-2Levonorgestrel component of afirmelleLevonorgestrel component of alesseLevonorgestrel component of altaveraLevonorgestrel component of avianeLevonorgestrel component of balcoltraLevonorgestrel component of climara pro
Summary
Levonorgestrel (CHEMBL1389) is an approved small-molecule female contraceptive drug (ATC G03AD01) targeting PGR; indicated across 21 conditions including endometriosis and migraine disorder.
At a glance
- Status: Approved (max clinical phase 4)
- Modality: Small molecule
- ATC class: G03AD01 (+1 more)
- Targets: 1 (PGR)
- Indications: 21 conditions
- Clinical trials: 106
- Chemistry: 312.4 Da · C21H28O2
Identifiers
Drug identity and classification
| Field | Value |
|---|---|
| ChEMBL ID | CHEMBL1389 |
| Name | Levonorgestrel |
| Type | Small molecule |
| Max phase | 4 |
| FDA approved | yes |
| PubChem CID | 13109 |
| ChEBI | CHEBI:6443 |
| ATC | G03AD01, G03AC03 |
| Molecular formula | C21H28O2 |
| Molecular weight | 312.4 |
| InChIKey | WWYNJERNGUHSAO-XUDSTZEESA-N |
SMILES: CC[C@]12CC[C@H]3[C@H]([C@@H]1CC[C@]2(C#C)O)CCC4=CC(=O)CC[C@H]34
IUPAC name: (8R,9S,10R,13S,14S,17R)-13-ethyl-17-ethynyl-17-hydroxy-1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-3-one
ChEBI definition: The (−)-enantiomer of norgestrel.
Pharmacological roles (ChEBI): progestin, synthetic oral contraceptive, female contraceptive drug.
Also known as: Athentia next, Emerres, Emerres una, Ezinelle, Fallback solo, Her style, Isteranda, Jadelle, Jaydess, Kyleena, Levonelle, Levonelle one step
Patent coverage: 7,708 distinct patent families (23,643 SureChEMBL compound mentions), from 1 matched compound structure(s). Mentions count patents naming the compound (not distinct inventions), so promiscuous / reference molecules inflate the mention figure — families are the dedup metric.
Targets
Targets
Primary targets (GtoPdb curated mechanism): the Cancer dependency column is the DepMap CRISPR fitness signal (% of screened cell lines dependent on the target).
| Gene | Target | Action | pAffinity | Cancer dependency | UniProt |
|---|---|---|---|---|---|
| PGR | Progesterone receptor | Agonist | 0.1% | P06401 |
Broader ChEMBL bioactivity targets: 6 (assay-derived). Sample: Androgen receptor, Estrogen receptor, Progesterone receptor, Sodium-dependent serotonin transporter, Gamma-aminobutyric acid receptor subunit alpha-1, Bile salt export pump.
Bioactivity
ChEMBL activities: 6 potent at pChembl ≥ 5 of 8 total. Top 30 by potency (10 = 0.1 nM, 6 = 1 µM):
| Target | pChembl | Type | Value | Unit | Activity ID |
|---|---|---|---|---|---|
| PGR | 9 | EC50 | 1 | nM | CHEMBL_ACT_24858585 |
| PGR | 9 | EC50 | 1 | nM | CHEMBL_ACT_24858586 |
| PGR | 8.52 | AC50 | 3 | nM | CHEMBL_ACT_25204362 |
| AR | 8.04 | AC50 | 9.2 | nM | CHEMBL_ACT_25203429 |
| P62813 | 5.46 | AC50 | 3440 | nM | CHEMBL_ACT_25207932 |
| ESR1 | 5.06 | AC50 | 8647 | nM | CHEMBL_ACT_25138929 |
Target pathways
Aggregated over 1 target gene(s): PGR.
Top Reactome pathways
7 total, by targets touching each:
| Pathway | Targets | Genes |
|---|---|---|
| Nuclear signaling by ERBB4 | 1 | PGR |
| HSP90 chaperone cycle for steroid hormone receptors (SHR) in the presence of ligand | 1 | PGR |
| Nuclear Receptor transcription pathway | 1 | PGR |
| SUMOylation of intracellular receptors | 1 | PGR |
| Estrogen-dependent gene expression | 1 | PGR |
| Developmental Lineage of Mammary Gland Luminal Epithelial Cells | 1 | PGR |
| Developmental Lineage of Mammary Gland Alveolar Cells | 1 | PGR |
Dominant GO biological processes
| GO term | Targets |
|---|---|
| ovulation from ovarian follicle | 1 |
| glandular epithelial cell maturation | 1 |
| regulation of DNA-templated transcription | 1 |
| regulation of transcription by RNA polymerase II | 1 |
| signal transduction | 1 |
| cell-cell signaling | 1 |
| positive regulation of gene expression | 1 |
| negative regulation of gene expression | 1 |
| nuclear receptor-mediated steroid hormone signaling pathway | 1 |
| paracrine signaling | 1 |
| positive regulation of transcription by RNA polymerase II | 1 |
| lung alveolus development | 1 |
| regulation of epithelial cell proliferation | 1 |
| progesterone receptor signaling pathway | 1 |
| maintenance of protein location in nucleus | 1 |
Indications & clinical
Indications
21 indications (1 at ChEMBL trial phase 4). Phase below is the highest clinical-trial phase recorded for this drug against each disease — not the molecule’s overall approval status (that is in the Summary).
| Indication | Trial phase | MONDO | EFO |
|---|---|---|---|
| endometriosis | 3 | MONDO:0005133 | EFO:0001065 |
| migraine disorder | 3 | MONDO:0005277 | MONDO:0005277 |
| anorexia nervosa | 3 | MONDO:0005351 | MONDO:0005351 |
| HIV infectious disease | 2 | MONDO:0005109 | EFO:0000764 |
| ovarian carcinoma | 2 | MONDO:0005140 | EFO:0001075 |
| adenomyosis | 2 | MONDO:0010888 | EFO:1001757 |
| endometrial carcinoma | 2 | MONDO:0002447 | EFO:1001512 |
| B-cell chronic lymphocytic leukemia | 1 | MONDO:0004948 | EFO:0000095 |
| chronic hepatitis C virus infection | 1 | MONDO:0005354 | EFO:0004220 |
| chronic hepatitis B virus infection | 1 | MONDO:0005366 | EFO:0004239 |
| metabolic dysfunction-associated steatohepatitis | 1 | MONDO:0007027 | EFO:1001249 |
| type 2 diabetes mellitus | 1 | MONDO:0005148 | MONDO:0005148 |
| neoplasm | 1 | MONDO:0005070 | MONDO:0004992 |
| diabetes mellitus | 1 | MONDO:0005015 | EFO:0000400 |
7 further indication records had no mapped disease name (EFO/MeSH-only) or were duplicates, and are omitted.
Clinical trials
Total trials: 106.
Phase distribution
| Phase | Trials |
|---|---|
| PHASE1 | 30 |
| Not specified | 22 |
| PHASE2 | 19 |
| PHASE4 | 16 |
| PHASE3 | 14 |
| PHASE2/PHASE3 | 4 |
| PHASE1/PHASE2 | 1 |
Top trials by phase / activity
| NCT | Phase | Status | Title |
|---|---|---|---|
| NCT05058872 | PHASE4 | RECRUITING | Contraceptive Hormone and Reward Measurement (CHARM Study) |
| NCT00131885 | PHASE4 | COMPLETED | Effects of St. John’s Wort on the Oral Contraceptive Hormone Levonorgestrel |
| NCT00204451 | PHASE4 | COMPLETED | Human Ovarian Follicular Dynamics and Emergency Contraception |
| NCT00498784 | PHASE4 | COMPLETED | HR-QoL and Sexuality in Mirena Inserted Contraception Users |
| NCT00570440 | PHASE4 | COMPLETED | Continuous Use of COCs |
| NCT00662454 | PHASE4 | COMPLETED | Oral Contraceptive Efficacy and Body Weight |
| NCT00696202 | PHASE4 | COMPLETED | Mirena Efficiency and Tolerability During the First Year of Use |
| NCT01074892 | PHASE4 | COMPLETED | A Study Comparing Mirena and Systemic Progestin for Endometrial Hyperplasia |
| NCT01501448 | PHASE4 | COMPLETED | Oral Estradiol Valerate Versus Oral Contraceptive Pill in Invitro Fertilization Patients |
| NCT01569113 | PHASE4 | COMPLETED | Assessment of Effects on Ovarian Activity of a Combined Oral Contraceptive Pill When Preceded by the Intake of ellaOne® or Placebo. |
| NCT02480647 | PHASE4 | COMPLETED | Clinical Trial the Use of Levonorgestrel-releasing Intrauterine System Versus Etonogestrel Implant in Endometriosis |
| NCT02531321 | PHASE4 | TERMINATED | Protease Inhibitors and Combined Oral Contraceptive Pharmacokinetics and Pharmacodynamics |
| NCT02706509 | PHASE4 | UNKNOWN | Pain Management Associated With the Insertion of Jaydess® in Nulliparous Women |
| NCT02957292 | PHASE4 | COMPLETED | A Study to Compare the Menstrual Bleeding Profile Among Jaydess® and Copper Intrauterine Device (IUD) Users. COLIBRI STUDY (Copper and Levonorgestrel IUD Barcelona Research Initiative). |
| NCT03537768 | PHASE4 | TERMINATED | Study Comparing Emergency Contraception Effectiveness in Women Who Weight ≥ 80 kg |
| NCT04910711 | PHASE4 | UNKNOWN | Investigating the Interaction Between Two Long-acting Reversible Methods of Contraception and Dolutegravir, a Treatment for HIV |
| NCT06492889 | PHASE2/PHASE3 | NOT_YET_RECRUITING | Assessing the Efficacy and Acceptability of Two Missed Period Pills Regimens |
| NCT06727734 | PHASE3 | RECRUITING | Levonorgestrel-piroxicam Versus Ulipristal Acetate for Emergency Contraception |
| NCT00128934 | PHASE3 | COMPLETED | Study Evaluating Combination of Levonorgestrel (LNG) and Ethinyl Estradiol (EE) in Premenstrual Dysphoric Disorder |
| NCT00161681 | PHASE3 | COMPLETED | Study Evaluating Levonorgestrel/Ethinyl Estradiol (LNG/EE) in PMS |
| NCT00195559 | PHASE3 | COMPLETED | Study Evaluating Combination of Levonorgestrel and Ethinyl Estradiol in Pre-Menstrual Dysphoric Disorder |
| NCT00245921 | PHASE3 | COMPLETED | Study Evaluating Levonorgestrel and Ethinyl Estradiol for Oral Contraception |
| NCT00271583 | PHASE2/PHASE3 | COMPLETED | Efficacy Trial of CDB 2914 for Emergency Contraception |
| NCT00511355 | PHASE3 | COMPLETED | Effects on Hemostasis, Lipids, Carbohydrate Metabolism, Adrenal & Thyroid Function of the Combined Oral Contraceptive NOMAC-E2 Compared to a COC Containing LNG-EE (292004)(COMPLETED)(P05764) |
| NCT00551616 | PHASE3 | COMPLETED | Safety and Efficacy of CDB-2914 in Comparison to Levonorgestrel for Emergency Contraception |
| NCT00922233 | PHASE3 | COMPLETED | Pericoital Oral Contraception With Levonorgestrel |
| NCT00995150 | PHASE3 | TERMINATED | A Study of a Levonorgestrel-Releasing Intrauterine System for Long-Term, Reversible Contraception |
| NCT01695902 | PHASE3 | COMPLETED | Therapeutic Equivalence Trial of Two Hormonal-IUDs in Patients With Heavy Menstrual Bleeding |
| NCT02021097 | PHASE3 | UNKNOWN | Study Evaluating Levonorgestrel and Ethinyl Estradiol for Oral Contraception |
| NCT02403401 | PHASE3 | COMPLETED | Safety and Contraceptive Efficacy of an Intravaginal Ring With LNG (Levonorgestrel) Over One Year in Healthy Women |
| NCT02599077 | PHASE2/PHASE3 | SUSPENDED | Impact vs. Dienogest: A Combined Oral Contraceptive in the Size of Endometriomas |
| NCT03359057 | PHASE3 | COMPLETED | Trial Evaluating Folic Acid Supplementation by Concomitant Administration of Ethinyl Estradiol + Levonorgestrel |
| NCT03614494 | PHASE2/PHASE3 | COMPLETED | Piroxicam and Levonorgestrel Co-treatment for Emergency Contraception |
| NCT04007874 | PHASE3 | UNKNOWN | Oral Contraceptive Pill Compared With Vitamin E in Women With Migraine |
| NCT01686126 | PHASE2 | ACTIVE_NOT_RECRUITING | Improving the Treatment for Women With Early Stage Cancer of the Uterus |
| NCT05695352 | PHASE2 | RECRUITING | Oral Levonorgestrel Plus Meloxicam, IG-002 Delays Ovulation in Normal Menstruating Women by Seven Days |
| NCT06073184 | PHASE2 | NOT_YET_RECRUITING | Weight-loss Drug for Fertility-Sparing Treatment of Atypical Hyperplasia and Low-grade Cancer of the Endometrium |
| NCT06306131 | PHASE2 | RECRUITING | Phase II Study of Ovulation in Obese Women |
| NCT07222228 | PHASE2 | NOT_YET_RECRUITING | A Study to Evaluate the Efficacy and Safety of Subcutaneous Levonorgestrel Butanoate for Female Contraception |
| NCT00033358 | PHASE2 | COMPLETED | Hormone Therapy in Preventing Endometrial Cancer in Patients With a Genetic Risk For Hereditary Nonpolyposis Colon Cancer |
Clinical evidence (CIViC)
No CIViC predictive evidence (expected for non-precision-medicine drugs).
Pharmacology
Pharmacogenomics
No CPIC/DPWG dosing guideline, but PharmGKB curates 0 clinical and 9 variant annotation(s) for this drug (gene-keyed; see PharmGKB).
Related molecules
Related molecules
Molecules sharing ≥1 of this drug’s curated primary targets, merged from two biobtree sources and ranked by shared-target count, then clinical phase: ChEMBL clinical-stage candidates (development phase ≥2) and PubChem drug-class bioactivity (approved / known drugs acting on the target). Deduplicated by drug name; the drug’s own salt forms are excluded. Note: for a drug with few primary targets a shared-target match can reflect off-target / promiscuous binding rather than the same therapeutic mechanism — the phase ordering surfaces bona-fide therapeutics first.
290 molecules share ≥1 primary target. Top 60 by shared-target count:
| Molecule | Source | Status | Shared targets |
|---|---|---|---|
| FIDAXOMICIN | ChEMBL + PubChem | Phase 4 (approved) | PGR |
| FULVESTRANT | ChEMBL + PubChem | Phase 4 (approved) | PGR |
| GENTIAN VIOLET | ChEMBL + PubChem | Phase 4 (approved) | PGR |
| ABIRATERONE | ChEMBL | Phase 4 (approved) | PGR |
| ACETYLCHOLINE | ChEMBL | Phase 4 (approved) | PGR |
| ADAPALENE | ChEMBL | Phase 4 (approved) | PGR |
| ALCLOMETASONE DIPROPIONATE | ChEMBL | Phase 4 (approved) | PGR |
| ALECTINIB | ChEMBL | Phase 4 (approved) | PGR |
| AMCINONIDE | ChEMBL | Phase 4 (approved) | PGR |
| APOMORPHINE | ChEMBL | Phase 4 (approved) | PGR |
| ARFORMOTEROL | ChEMBL | Phase 4 (approved) | PGR |
| ARIPIPRAZOLE | ChEMBL | Phase 4 (approved) | PGR |
| AZATHIOPRINE | ChEMBL | Phase 4 (approved) | PGR |
| BECLOMETHASONE DIPROPIONATE | ChEMBL | Phase 4 (approved) | PGR |
| BENPERIDOL | ChEMBL | Phase 4 (approved) | PGR |
| BENZBROMARONE | ChEMBL | Phase 4 (approved) | PGR |
| BENZIODARONE | ChEMBL | Phase 4 (approved) | PGR |
| BETAMETHASONE | ChEMBL | Phase 4 (approved) | PGR |
| BETAMETHASONE DIPROPIONATE | ChEMBL | Phase 4 (approved) | PGR |
| BETAMETHASONE VALERATE | ChEMBL | Phase 4 (approved) | PGR |
| BEXAROTENE | ChEMBL | Phase 4 (approved) | PGR |
| BICALUTAMIDE | ChEMBL | Phase 4 (approved) | PGR |
| BIFONAZOLE | ChEMBL | Phase 4 (approved) | PGR |
| BITHIONOL | ChEMBL | Phase 4 (approved) | PGR |
| BOSUTINIB | ChEMBL | Phase 4 (approved) | PGR |
| BUDESONIDE | ChEMBL | Phase 4 (approved) | PGR |
| BUTOCONAZOLE | ChEMBL | Phase 4 (approved) | PGR |
| CABOZANTINIB | ChEMBL | Phase 4 (approved) | PGR |
| CALCIPOTRIENE | ChEMBL | Phase 4 (approved) | PGR |
| CALCITRIOL | ChEMBL | Phase 4 (approved) | PGR |
| CANDESARTAN CILEXETIL | ChEMBL | Phase 4 (approved) | PGR |
| CANRENONE | ChEMBL | Phase 4 (approved) | PGR |
| CARBARIL | ChEMBL | Phase 4 (approved) | PGR |
| CASPOFUNGIN | ChEMBL | Phase 4 (approved) | PGR |
| CEFAMANDOLE | ChEMBL | Phase 4 (approved) | PGR |
| CEFMENOXIME | ChEMBL | Phase 4 (approved) | PGR |
| CEFTAZIDIME | ChEMBL | Phase 4 (approved) | PGR |
| CEFTIZOXIME | ChEMBL | Phase 4 (approved) | PGR |
| CEFTRIAXONE | ChEMBL | Phase 4 (approved) | PGR |
| CEFUROXIME | ChEMBL | Phase 4 (approved) | PGR |
| CEPHRADINE | ChEMBL | Phase 4 (approved) | PGR |
| CHLORHEXIDINE | ChEMBL | Phase 4 (approved) | PGR |
| CHLORMADINONE | ChEMBL | Phase 4 (approved) | PGR |
| CHOLECALCIFEROL | ChEMBL | Phase 4 (approved) | PGR |
| CICLESONIDE | ChEMBL | Phase 4 (approved) | PGR |
| CLOBETASOL PROPIONATE | ChEMBL | Phase 4 (approved) | PGR |
| CLOCORTOLONE PIVALATE | ChEMBL | Phase 4 (approved) | PGR |
| CLOMIPHENE | ChEMBL | Phase 4 (approved) | PGR |
| CYCLOFENIL | ChEMBL | Phase 4 (approved) | PGR |
| DANAZOL | ChEMBL | Phase 4 (approved) | PGR |
| DAUNORUBICIN | ChEMBL | Phase 4 (approved) | PGR |
| DEFLAZACORT | ChEMBL | Phase 4 (approved) | PGR |
| DEQUALINIUM | ChEMBL | Phase 4 (approved) | PGR |
| DESOGESTREL | ChEMBL | Phase 4 (approved) | PGR |
| DESONIDE | ChEMBL | Phase 4 (approved) | PGR |
| DESOXIMETASONE | ChEMBL | Phase 4 (approved) | PGR |
| DESOXYCORTICOSTERONE PIVALATE | ChEMBL | Phase 4 (approved) | PGR |
| DEXAMETHASONE | ChEMBL | Phase 4 (approved) | PGR |
| DIETHYLPROPION | ChEMBL | Phase 4 (approved) | PGR |
| DIETHYLSTILBESTROL | ChEMBL | Phase 4 (approved) | PGR |
Related Atlas pages
- Genes: PGR
- Diseases: endometriosis, migraine disorder, anorexia nervosa
- Drugs: Fidaxomicin, Fulvestrant, Abiraterone, Acetylcholine, Adapalene, Alclometasone Dipropionate, Alectinib, Amcinonide, Apomorphine, Arformoterol, Aripiprazole, Azathioprine, Beclomethasone Dipropionate, Benperidol, Benzbromarone, Benziodarone, Betamethasone, Betamethasone Dipropionate, Betamethasone Valerate, Bexarotene, Bicalutamide, Bifonazole, Bithionol, Bosutinib, Budesonide, Butoconazole, Cabozantinib, Calcipotriene, Calcitriol, Candesartan Cilexetil, Canrenone, Carbaril, Caspofungin, Cefamandole, Cefmenoxime, Ceftazidime, Ceftizoxime, Ceftriaxone, Cefuroxime, Cephradine, Chlorhexidine, Chlormadinone, Cholecalciferol, Ciclesonide, Clobetasol Propionate, Clocortolone Pivalate, Clomiphene, Cyclofenil, Danazol, Daunorubicin, Deflazacort, Dequalinium, Desogestrel, Desonide, Desoximetasone, Desoxycorticosterone Pivalate, Dexamethasone, Diethylpropion, Diethylstilbestrol