linrodostat   Click here for help

GtoPdb Ligand ID: 9707

Synonyms: BMS-986205 | BMS986205 | Compound 2 [PMID: 29531094] | Example 19 [US20160137652A1]
Immunopharmacology Ligand
Compound class: Synthetic organic
Comment: Linrodostat (BMS-986205) is a potent and selective, orally available indoleamine 2,3-dioxygenase 1 (IDO1) inhibitor [3], being investigated as an immuno-therapeutic for various malignancies. The INN for linrodostat specifies the (R) stereoisomer. The chemical structure is claimed as example 19 in Flexus Bioscience's patent US2016137652 [1] and the compound is being taken through clinical development by Bristol-Myers Squibb. Mechanistically, linrodostat competes with the heme cofactor for binding to the apo-form of the enzyme, and once bound prevents heme from rebinding [3].
2D Structure
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2D Structure

An image of the ligand's 2D structure. For small molecules with SMILES these are drawn using the NCI/CADD Chemical Identifier Resolver. Click on the image to access the chemical structure search tool with the ligand pre-loaded in the structure editor. For other types of ligands, e.g. longer nucleotides and peptides, a manually drawn representation of the molecule may be provided.

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Physico-chemical Properties
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Physico-chemical Properties

Calculated molecular properties are available for small molecules and natural products (not peptides). Properties were generated using the CDK toolkit. All properties were selected to enable the prediction of the Lipinski Rule-of-Five profile or ‘druglikeness’ for each ligand. For more info on each category see the help pages.

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Hydrogen bond acceptors 3
Hydrogen bond donors 1
Rotatable bonds 5
Topological polar surface area 41.99
Molecular weight 410.16
XLogP 6.53
No. Lipinski's rules broken 1
SMILES / InChI / InChIKey
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SMILES / InChI / InChIKey

SMILES (Simplified Molecular Input Line Entry Specification) A specification for unambiguously describing the structure of chemical molecules using short ASCII strings. Canonical SMILES specify a unique representation of the 2D structure without chiral or isotopic specifications. Isomeric SMILES include chiral specification and isotopes.

Standard InChI (IUPAC International Chemical Identifier) and InChIKey InChI is a non-proprietary, standard, textual identifier for chemical substances designed to facilitate linking of information and database searching. An InChIKey is a simplified version of a full InChI, designed for easier web searching.

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Canonical SMILES Clc1ccc(cc1)NC(=O)C(C1CCC(CC1)c1ccnc2c1cc(F)cc2)C
Isomeric SMILES Clc1ccc(cc1)NC(=O)[C@@H](C1CCC(CC1)c1ccnc2c1cc(F)cc2)C
InChI InChI=1S/C24H24ClFN2O/c1-15(24(29)28-20-9-6-18(25)7-10-20)16-2-4-17(5-3-16)21-12-13-27-23-11-8-19(26)14-22(21)23/h6-17H,2-5H2,1H3,(H,28,29)/t15-,16?,17?/m1/s1
InChI Key KRTIYQIPSAGSBP-KLAILNCOSA-N
No information available.
Summary of Clinical Use Click here for help
BMS-986205 has advanced to Phase 3 evaluation in advanced melanoma (NCT03329846) and advanced bladder cancer. Phase 3 studies in head and neck cancer and NSCLC have been withdrawn due to business strategy changes. Earlier stage trials are ongoing in other types of cancer. Click here to link to ClinicalTrials.gov's full list of BMS-986205 studies.
Mechanism Of Action and Pharmacodynamic Effects Click here for help
IDO1 inhibitors reverse the depletion of tryptophan, Treg cell differentiation and suppression of the immune response that underlies the tolerogenic environment created in the vicinity of some tumours.
Clinical Trials
Clinical Trial ID Title Type Source Comment References
NCT03329846 An Investigational Immuno-therapy Study of BMS-986205 Combined With Nivolumab, Compared to Nivolumab by Itself, in Patients With Advanced Melanoma Phase 3 Interventional Bristol-Myers Squibb