(D)-Serine
drug drugOn this page
Also known as D-serineSID26753645SID50106988SID90341480SID26753646SID144204821
Summary
(D)-Serine (CHEMBL285123) is a phase-3 clinical-stage small-molecule NMDA receptor agonist targeting GRIN1, GRIN2A, and GRIN2B; indicated across 3 conditions including schizoaffective disorder and cocaine dependence.
At a glance
- Status: Max clinical phase 3 (not approved)
- Modality: Small molecule
- Targets: 5 (GRIN1, GRIN2A, GRIN2B…)
- Indications: 3 conditions
- Clinical trials: 26
- Chemistry: 105.09 Da · C3H7NO3
Identifiers
Drug identity and classification
| Field | Value |
|---|---|
| ChEMBL ID | CHEMBL285123 |
| Name | (D)-Serine |
| Type | Small molecule |
| Max phase | 3 |
| FDA approved | no |
| PubChem CID | 71077 |
| ChEBI | CHEBI:16523 |
| Molecular formula | C3H7NO3 |
| Molecular weight | 105.09 |
| InChIKey | MTCFGRXMJLQNBG-UWTATZPHSA-N |
SMILES: C([C@H](C(=O)O)N)O
IUPAC name: (2R)-2-amino-3-hydroxypropanoic acid
ChEBI definition: The R-enantiomer of serine.
Pharmacological roles (ChEBI): NMDA receptor agonist.
Other ChEBI roles (chemical / environmental): human metabolite, Escherichia coli metabolite.
Also known as: (d)-serine, D-serine, D-Serine, SID26753645, SID50106988, SID90341480, SID26753646, SID144204821, (D)-serine, (D)-SERINE, D-SERINE
Parent form; salt/anhydrous children: CHEMBL4650463
Patent coverage: 4,483 distinct patent families (13,551 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 |
|---|---|---|---|---|---|
| GRIN1 | GluN1 | Agonist | 0.1% | Q05586 | |
| GRIN2A | GluN2A | Agonist | 0.4% | Q12879 | |
| GRIN2B | GluN2B | Agonist | 0% | Q13224 | |
| GRIN2C | GluN2C | Agonist | 0.2% | Q14957 | |
| GRIN2D | GluN2D | Agonist | 0.2% | O15399 |
Broader ChEMBL bioactivity targets: 9 (assay-derived). Sample: Prelamin-A/C, RecQ-like DNA helicase BLM, Glutamate NMDA receptor, Glutamate NMDA receptor; Grin1/Grin2b, Glutamate NMDA receptor; Grin1/Grin2a, Glutamate NMDA receptor; Grin1/Grin2c, Ionotropic glutamate receptor NMDA 1/2D, Glutamate receptor ionotropic, NMDA 1, Asc-type amino acid transporter 1.
Bioactivity
ChEMBL activities: 16 potent at pChembl ≥ 5 of 17 total. Top 100 by potency (10 = 0.1 nM, 6 = 1 µM):
| Target | pChembl | Type | Value | Unit | Activity ID |
|---|---|---|---|---|---|
| BLM | 8.6 | Potency | 2.5 | nM | CHEMBL_ACT_4745850 |
| BLM | 8.6 | Potency | 2.5 | nM | CHEMBL_ACT_4917938 |
| P35439 | 6.82 | EC50 | 150 | nM | CHEMBL_ACT_24390742 |
| P35439 | 6.8 | EC50 | 160 | nM | CHEMBL_ACT_430452 |
| P35439 | 6.77 | EC50 | 170 | nM | CHEMBL_ACT_29223729 |
| P35439 | 6.72 | EC50 | 190 | nM | CHEMBL_ACT_24390725 |
| P35439 | 6.7 | EC50 | 200 | nM | CHEMBL_ACT_426896 |
| P35439 | 6.68 | EC50 | 210 | nM | CHEMBL_ACT_29223713 |
| P35439 | 6.52 | IC50 | 300 | nM | CHEMBL_ACT_426895 |
| P35439 | 6.5 | Ki | 316.2 | nM | CHEMBL_ACT_2710062 |
| P35439 | 6.21 | EC50 | 620 | nM | CHEMBL_ACT_24390715 |
| P35439 | 6.17 | EC50 | 670 | nM | CHEMBL_ACT_29223697 |
| P35439 | 6.17 | IC50 | 670 | nM | CHEMBL_ACT_430451 |
| P35439 | 6 | EC50 | 1000 | nM | CHEMBL_ACT_24390705 |
| P35439 | 5.95 | EC50 | 1130 | nM | CHEMBL_ACT_29223645 |
| P63116 | 5.03 | IC50 | 9400 | nM | CHEMBL_ACT_17949456 |
Target pathways
Aggregated over 5 target gene(s): GRIN1, GRIN2A, GRIN2B, GRIN2C, GRIN2D.
Top Reactome pathways
11 total, by targets touching each:
| Pathway | Targets | Genes |
|---|---|---|
| Unblocking of NMDA receptors, glutamate binding and activation | 5 | GRIN1, GRIN2A, GRIN2B, GRIN2C, GRIN2D |
| Neurexins and neuroligins | 5 | GRIN1, GRIN2A, GRIN2B, GRIN2C, GRIN2D |
| Synaptic adhesion-like molecules | 5 | GRIN1, GRIN2A, GRIN2B, GRIN2C, GRIN2D |
| Assembly and cell surface presentation of NMDA receptors | 5 | GRIN1, GRIN2A, GRIN2B, GRIN2C, GRIN2D |
| Negative regulation of NMDA receptor-mediated neuronal transmission | 5 | GRIN1, GRIN2A, GRIN2B, GRIN2C, GRIN2D |
| Long-term potentiation | 5 | GRIN1, GRIN2A, GRIN2B, GRIN2C, GRIN2D |
| Ras activation upon Ca2+ influx through NMDA receptor | 3 | GRIN1, GRIN2B, GRIN2D |
| RAF/MAP kinase cascade | 3 | GRIN1, GRIN2B, GRIN2D |
| EPHB-mediated forward signaling | 2 | GRIN1, GRIN2B |
| MECP2 regulates neuronal receptors and channels | 2 | GRIN2A, GRIN2B |
| Activated NTRK2 signals through FYN | 1 | GRIN2B |
Dominant GO biological processes
| GO term | Targets |
|---|---|
| brain development | 5 |
| ionotropic glutamate receptor signaling pathway | 5 |
| regulation of synaptic plasticity | 5 |
| regulation of neuronal synaptic plasticity | 5 |
| positive regulation of synaptic transmission, glutamatergic | 5 |
| excitatory postsynaptic potential | 5 |
| calcium ion transmembrane import into cytosol | 5 |
| monoatomic cation transmembrane transport | 5 |
| excitatory chemical synaptic transmission | 5 |
| regulation of monoatomic cation transmembrane transport | 5 |
| positive regulation of excitatory postsynaptic potential | 5 |
| monoatomic ion transport | 5 |
| monoatomic ion transmembrane transport | 5 |
| regulation of membrane potential | 4 |
| calcium-mediated signaling | 4 |
Indications & clinical
Indications
2 diseases in clinical trials (phase 1–3, investigational — not approved indications). Highest ChEMBL trial phase per disease; a non-cancer approved use is occasionally logged at phase 3 here.
| Disease (in trials) | Phase | MONDO | EFO |
|---|---|---|---|
| schizoaffective disorder | 3 | MONDO:0005487 | EFO:0005411 |
| cocaine dependence | 2 | MONDO:0005186 | EFO:0002610 |
1 further indication record had no mapped disease name (EFO/MeSH-only) or were duplicates, and are omitted.
Clinical trials
Total trials: 26.
Phase distribution
| Phase | Trials |
|---|---|
| PHASE2 | 11 |
| Not specified | 5 |
| PHASE3 | 3 |
| PHASE1 | 3 |
| PHASE4 | 2 |
| PHASE1/PHASE2 | 2 |
Top trials by phase / activity
| NCT | Phase | Status | Title |
|---|---|---|---|
| NCT00215904 | PHASE4 | COMPLETED | D-serine Adjuvant Treatment for Parkinson’s Disease |
| NCT01018056 | PHASE4 | COMPLETED | Developing New Treatments for Tourette Syndrome: Therapeutic Trials With Modulators of Glutamatergic Neurotransmission |
| NCT07263022 | PHASE3 | NOT_YET_RECRUITING | Cognitive Strategies in Early Psychosis 2 |
| NCT00237809 | PHASE3 | COMPLETED | D-Serine Treatment of Negative Symptoms and Cognitive Deficits in Schizophrenia |
| NCT00237848 | PHASE3 | COMPLETED | D-Serine for Enhancing Cognitive Retraining for the Treatment of Schizophrenia |
| NCT07312110 | PHASE2 | RECRUITING | D-SPARK: A Clinical Trial of D-Serine for Modifying Parkinson’s Disease Progression |
| NCT00138775 | PHASE2 | UNKNOWN | Israel Multicenter D-Serine Study (IMSER) for the Treatment of Schizophrenia |
| NCT00215878 | PHASE2 | COMPLETED | D-serine for Posttraumatic Stress Disorder Treatment |
| NCT00322023 | PHASE2 | COMPLETED | Safety and Effectiveness of D-serine in Schizophrenia |
| NCT00491569 | PHASE2 | COMPLETED | Sarcosine or D-Serine Add-on Treatment for Chronic Schizophrenia |
| NCT00816894 | PHASE2 | COMPLETED | D-serine Monotherapy for Schizophrenia |
| NCT00826202 | PHASE2 | COMPLETED | D-serine for the Schizophrenia Prodrome |
| NCT01459029 | PHASE2 | UNKNOWN | High Dose D-Serine as Adjuvant Treatment for Recent Onset Schizophrenia |
| NCT01474395 | PHASE2 | UNKNOWN | N-methyl-D-aspartic Acid (NMDA) and Cognitive Remediation in Schizophrenia |
| NCT01715051 | PHASE2 | WITHDRAWN | D-Serine for Cocaine Dependence Pilot |
| NCT02156908 | PHASE2 | COMPLETED | D-serine and Cognitive Remediation in Schizophrenia |
| NCT03711500 | PHASE1/PHASE2 | COMPLETED | D-serine Augmentation of Neuroplasticity |
| NCT05046353 | PHASE1/PHASE2 | SUSPENDED | D-serine AudRem: R33 Phase |
| NCT06876129 | PHASE1 | RECRUITING | Pharmacologic Augmentation of TMS for Depression With D-serine |
| NCT07079930 | PHASE1 | RECRUITING | Safety and Psychological Effects of Psilocybin and D-Serine Formulation in Healthy Volunteers |
| NCT03778320 | PHASE1 | COMPLETED | A Study to Compare the Safety, Tolerability, and Pharmacokinetics of CTP-692 Versus D-serine in Healthy Volunteers |
| NCT01804920 | Not specified | UNKNOWN | D-Serine Treatment For Tardive Dyskinesia |
| NCT02051426 | Not specified | COMPLETED | Behavioral and Cognitive Effects of the N-methyl-D-aspartate Receptor (NMDAR) Co-agonist D-serine in Healthy Humans |
| NCT03702933 | Not specified | UNKNOWN | D-serine in Schizophrenia |
| NCT04140773 | Not specified | TERMINATED | The Effect of D-serine as add-on Therapy in Recent-onset Psychosis |
| NCT04721249 | Not specified | COMPLETED | D-serine Supplementation for Depression |
Clinical evidence (CIViC)
No CIViC predictive evidence (expected for non-precision-medicine drugs).
Pharmacology
Pharmacogenomics
No PharmGKB pharmacogenomic data curated for this drug.
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.
41 molecules share ≥1 primary target. Top 41 by shared-target count:
| Molecule | Source | Status | Shared targets |
|---|---|---|---|
| AMANTADINE | ChEMBL + PubChem | Phase 4 (approved) | GRIN1, GRIN2A, GRIN2B, GRIN2C, GRIN2D |
| CHLORPROMAZINE | ChEMBL + PubChem | Phase 4 (approved) | GRIN1, GRIN2A, GRIN2B, GRIN2C, GRIN2D |
| DEXTROMETHORPHAN | ChEMBL + PubChem | Phase 4 (approved) | GRIN1, GRIN2A, GRIN2B, GRIN2C, GRIN2D |
| KETAMINE | ChEMBL + PubChem | Phase 4 (approved) | GRIN1, GRIN2A, GRIN2B, GRIN2C, GRIN2D |
| LEVORPHANOL | ChEMBL + PubChem | Phase 4 (approved) | GRIN1, GRIN2A, GRIN2B, GRIN2C, GRIN2D |
| MEMANTINE | ChEMBL + PubChem | Phase 4 (approved) | GRIN1, GRIN2A, GRIN2B, GRIN2C, GRIN2D |
| ORPHENADRINE | ChEMBL + PubChem | Phase 4 (approved) | GRIN1, GRIN2A, GRIN2B, GRIN2C, GRIN2D |
| CYCLOSERINE | ChEMBL | Phase 4 (approved) | GRIN1, GRIN2A, GRIN2B, GRIN2C, GRIN2D |
| PROCYCLIDINE | ChEMBL | Phase 4 (approved) | GRIN1, GRIN2A, GRIN2B, GRIN2C, GRIN2D |
| GLUTAMIC ACID | ChEMBL + PubChem | Phase 3 (approved) | GRIN1, GRIN2A, GRIN2B, GRIN2C, GRIN2D |
| DALZANEMDOR | ChEMBL | Phase 3 | GRIN1, GRIN2A, GRIN2B, GRIN2C, GRIN2D |
| ESMETHADONE | ChEMBL | Phase 3 | GRIN1, GRIN2A, GRIN2B, GRIN2C, GRIN2D |
| ALPHAMETHADOL | ChEMBL | Phase 2 | GRIN1, GRIN2A, GRIN2B, GRIN2C, GRIN2D |
| BUDIPINE | ChEMBL | Phase 2 | GRIN1, GRIN2A, GRIN2B, GRIN2C, GRIN2D |
| DEXTRORPHAN | ChEMBL | Phase 2 | GRIN1, GRIN2A, GRIN2B, GRIN2C, GRIN2D |
| DIZOCILPINE | ChEMBL | Phase 2 | GRIN1, GRIN2A, GRIN2B, GRIN2C, GRIN2D |
| IFENPRODIL | ChEMBL | Phase 2 | GRIN1, GRIN2A, GRIN2B, GRIN2C, GRIN2D |
| LANICEMINE | ChEMBL | Phase 2 | GRIN1, GRIN2A, GRIN2B, GRIN2C, GRIN2D |
| LEVOMETHADONE | ChEMBL | Phase 2 | GRIN1, GRIN2A, GRIN2B, GRIN2C, GRIN2D |
| LICOSTINEL | ChEMBL | Phase 2 | GRIN1, GRIN2A, GRIN2B, GRIN2C, GRIN2D |
| PERZINFOTEL | ChEMBL | Phase 2 | GRIN1, GRIN2A, GRIN2B, GRIN2C, GRIN2D |
| PHENCYCLIDINE | ChEMBL | Phase 2 | GRIN1, GRIN2A, GRIN2B, GRIN2C, GRIN2D |
| RACEMETHORPHAN | ChEMBL | Phase 2 | GRIN1, GRIN2A, GRIN2B, GRIN2C, GRIN2D |
| RADIPRODIL | ChEMBL | Phase 2 | GRIN1, GRIN2A, GRIN2B, GRIN2C, GRIN2D |
| SELFOTEL | ChEMBL | Phase 2 | GRIN1, GRIN2A, GRIN2B, GRIN2C, GRIN2D |
| TEZAMPANEL | ChEMBL | Phase 2 | GRIN1, GRIN2A, GRIN2B, GRIN2C, GRIN2D |
| TRAXOPRODIL | ChEMBL | Phase 2 | GRIN1, GRIN2A, GRIN2B, GRIN2C, GRIN2D |
| BETAMETHADOL | ChEMBL | Phase 2 | GRIN1, GRIN2A, GRIN2C, GRIN2D |
| TACRINE | ChEMBL | Phase 4 (approved) | GRIN1, GRIN2A, GRIN2B |
| LATREPIRDINE | ChEMBL | Phase 3 | GRIN1, GRIN2A, GRIN2B |
| ESKETAMINE | ChEMBL + PubChem | Phase 4 (approved) | GRIN1, GRIN2A |
| PENTAMIDINE | ChEMBL | Phase 4 (approved) | GRIN1, GRIN2A |
| DEXOXADROL | ChEMBL | Phase 2 | GRIN1, GRIN2A |
| DIMEMORFAN | ChEMBL | Phase 2 | GRIN1, GRIN2A |
| ELIPRODIL | ChEMBL | Phase 2 | GRIN1, GRIN2B |
| ETOXADROL | ChEMBL | Phase 2 | GRIN1, GRIN2A |
| ONFASPRODIL | ChEMBL | Phase 2 | GRIN1, GRIN2B |
| ZELQUISTINEL | ChEMBL | Phase 2 | GRIN2B, GRIN2C |
| Nimodipine | PubChem | Approved | GRIN2C, GRIN2D |
| HALOPERIDOL | ChEMBL | Phase 4 (approved) | GRIN2B |
| EVT-101 FREE BASE | ChEMBL | Phase 2 | GRIN2B |
Related Atlas pages
- Genes: GRIN1, GRIN2A, GRIN2B, GRIN2C, GRIN2D
- In clinical trials for: schizoaffective disorder, cocaine dependence
- Drugs: Amantadine, Chlorpromazine, Dextromethorphan, Ketamine, Levorphanol, Memantine, Orphenadrine, Cycloserine, Procyclidine, Glutamic Acid, Dalzanemdor, Esmethadone, Tacrine, Latrepirdine, Esketamine, Pentamidine, Nimodipine, Haloperidol