General Information of Drug Combination (ID: DCB9762)

Drug Combination Name
Chlorzoxazone Tamoxifen
Indication
Disease Entry Status REF
Chronic myelogenous leukemia Investigative [1]
Component Drugs Chlorzoxazone   DMCYVDT Tamoxifen   DMLB0EZ
Small molecular drug Small molecular drug
2D MOL 2D MOL
3D MOL 3D MOL
High-throughput Screening Result Testing Cell Line: KBM-7
Zero Interaction Potency (ZIP) Score: 2.82
Bliss Independence Score: 2.82
Loewe Additivity Score: 3.73
LHighest Single Agent (HSA) Score: 3.73

Molecular Interaction Atlas of This Drug Combination

Molecular Interaction Atlas (MIA)
Indication(s) of Chlorzoxazone
Disease Entry ICD 11 Status REF
Acute pain MG31 Approved [2]
Chlorzoxazone Interacts with 1 DTT Molecule(s)
DTT Name DTT ID UniProt ID Mode of Action REF
Calcium-activated potassium channel (KCN) TTMNI76 NOUNIPROTAC Activator [6]
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Chlorzoxazone Interacts with 6 DME Molecule(s)
DME Name DME ID UniProt ID Mode of Action REF
Cytochrome P450 3A4 (CYP3A4) DE4LYSA CP3A4_HUMAN Metabolism [7]
Cytochrome P450 1A2 (CYP1A2) DEJGDUW CP1A2_HUMAN Metabolism [8]
Cytochrome P450 2A6 (CYP2A6) DEJVYAZ CP2A6_HUMAN Metabolism [9]
Cytochrome P450 2D6 (CYP2D6) DECB0K3 CP2D6_HUMAN Metabolism [9]
Cytochrome P450 2E1 (CYP2E1) DEVDYN7 CP2E1_HUMAN Metabolism [10]
Cytochrome P450 102A1 (cyp102) DE4OGUF CPXB_BACMB Metabolism [11]
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⏷ Show the Full List of 6 DME(s)
Chlorzoxazone Interacts with 3 DOT Molecule(s)
DOT Name DOT ID UniProt ID Mode of Action REF
Intermediate conductance calcium-activated potassium channel protein 4 (KCNN4) OTQKQ346 KCNN4_HUMAN Increases Activity [12]
Cytochrome P450 1B1 (CYP1B1) OTYXFLSD CP1B1_HUMAN Decreases Activity [13]
Arylamine N-acetyltransferase 2 (NAT2) OTBPDQOY ARY2_HUMAN Affects Metabolism [5]
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Indication(s) of Tamoxifen
Disease Entry ICD 11 Status REF
Breast cancer 2C60-2C65 Approved [3]
Inflammatory breast cancer 2C62 Approved [4]
Invasive ductal breast carcinoma N.A. Approved [4]
Tamoxifen Interacts with 1 DTT Molecule(s)
DTT Name DTT ID UniProt ID Mode of Action REF
Estrogen receptor (ESR) TTZAYWL ESR1_HUMAN Antagonist [14]
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Tamoxifen Interacts with 3 DTP Molecule(s)
DTP Name DTP ID UniProt ID Mode of Action REF
P-glycoprotein 1 (ABCB1) DTUGYRD MDR1_HUMAN Substrate [15]
Breast cancer resistance protein (ABCG2) DTI7UX6 ABCG2_HUMAN Substrate [16]
Multidrug resistance-associated protein 7 (ABCC10) DTPS120 MRP7_HUMAN Substrate [17]
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Tamoxifen Interacts with 16 DME Molecule(s)
DME Name DME ID UniProt ID Mode of Action REF
Cytochrome P450 3A4 (CYP3A4) DE4LYSA CP3A4_HUMAN Metabolism [18]
Cytochrome P450 1A2 (CYP1A2) DEJGDUW CP1A2_HUMAN Metabolism [19]
UDP-glucuronosyltransferase 1A1 (UGT1A1) DEYGVN4 UD11_HUMAN Metabolism [20]
Cytochrome P450 2A6 (CYP2A6) DEJVYAZ CP2A6_HUMAN Metabolism [21]
Cytochrome P450 1A1 (CYP1A1) DE6OQ3W CP1A1_HUMAN Metabolism [22]
Sulfotransferase 1A1 (SULT1A1) DEYWLRK ST1A1_HUMAN Metabolism [23]
Cytochrome P450 2D6 (CYP2D6) DECB0K3 CP2D6_HUMAN Metabolism [24]
Cytochrome P450 3A5 (CYP3A5) DEIBDNY CP3A5_HUMAN Metabolism [25]
Cytochrome P450 2E1 (CYP2E1) DEVDYN7 CP2E1_HUMAN Metabolism [21]
Thiopurine methyltransferase (TPMT) DEFQ8VO TPMT_HUMAN Metabolism [26]
Cytochrome P450 3A7 (CYP3A7) DERD86B CP3A7_HUMAN Metabolism [27]
Cytochrome P450 2C9 (CYP2C9) DE5IED8 CP2C9_HUMAN Metabolism [28]
Cytochrome P450 2B6 (CYP2B6) DEPKLMQ CP2B6_HUMAN Metabolism [29]
Mephenytoin 4-hydroxylase (CYP2C19) DEGTFWK CP2CJ_HUMAN Metabolism [30]
UDP-glucuronosyltransferase 2B7 (UGT2B7) DEB3CV1 UD2B7_HUMAN Metabolism [31]
UDP-glucuronosyltransferase 1A10 (UGT1A10) DEL5N6Y UD110_HUMAN Metabolism [32]
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⏷ Show the Full List of 16 DME(s)
Tamoxifen Interacts with 1 DOT Molecule(s)
DOT Name DOT ID UniProt ID Mode of Action REF
Coagulation factor V (F5) OTDMZ3LT FA5_HUMAN Increases ADR [33]
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References

1 Recurrent recessive mutation in deoxyguanosine kinase causes idiopathic noncirrhotic portal hypertension.Hepatology. 2016 Jun;63(6):1977-86. doi: 10.1002/hep.28499. Epub 2016 Mar 31.
2 URL: http://www.guidetopharmacology.org Nucleic Acids Res. 2015 Oct 12. pii: gkv1037. The IUPHAR/BPS Guide to PHARMACOLOGY in 2016: towards curated quantitative interactions between 1300 protein targets and 6000 ligands. (Ligand id: 2322).
3 URL: http://www.guidetopharmacology.org Nucleic Acids Res. 2015 Oct 12. pii: gkv1037. The IUPHAR/BPS Guide to PHARMACOLOGY in 2016: towards curated quantitative interactions between 1300 protein targets and 6000 ligands. (Ligand id: 1016).
4 Tamoxifen FDA Label
5 Effects of cigarette smoking and carbon monoxide on chlorzoxazone and caffeine metabolism. Clin Pharmacol Ther. 2003 Nov;74(5):468-74. doi: 10.1016/j.clpt.2003.07.001.
6 Chlorzoxazone inhibits contraction of rat thoracic aorta. Eur J Pharmacol. 2006 Sep 18;545(2-3):161-6.
7 Summary of information on human CYP enzymes: human P450 metabolism data. Drug Metab Rev. 2002 Feb-May;34(1-2):83-448.
8 Inhibitory monoclonal antibodies to human cytochrome P450 1A2: analysis of phenacetin O-deethylation in human liver. Pharmacogenetics. 1998 Oct;8(5):375-82.
9 Prediction of human liver microsomal oxidations of 7-ethoxycoumarin and chlorzoxazone with kinetic parameters of recombinant cytochrome P-450 enzymes. Drug Metab Dispos. 1999 Nov;27(11):1274-80.
10 Trimethadione metabolism by human liver cytochrome P450: evidence for the involvement of CYP2E1. Xenobiotica. 1998 Nov;28(11):1041-7.
11 Wild-type CYP102A1 as a biocatalyst: turnover of drugs usually metabolised by human liver enzymes. J Biol Inorg Chem. 2007 Mar;12(3):313-23.
12 Functional and molecular identification of intermediate-conductance Ca(2+)-activated K(+) channels in breast cancer cells: association with cell cycle progression. Am J Physiol Cell Physiol. 2004 Jul;287(1):C125-34. doi: 10.1152/ajpcell.00488.2003. Epub 2004 Feb 25.
13 Association of CYP1A1 and CYP1B1 inhibition in in vitro assays with drug-induced liver injury. J Toxicol Sci. 2021;46(4):167-176. doi: 10.2131/jts.46.167.
14 Modulators of vascular sex hormone receptors and their effects in estrogen-deficiency states associated with menopause. Recent Pat Cardiovasc Drug Discov. 2008 Nov;3(3):165-86.
15 Mammalian drug efflux transporters of the ATP binding cassette (ABC) family in multidrug resistance: A review of the past decade. Cancer Lett. 2016 Jan 1;370(1):153-64.
16 The phytoestrogen genistein enhances multidrug resistance in breast cancer cell lines by translational regulation of ABC transporters. Cancer Lett. 2016 Jun 28;376(1):165-72.
17 Modulation of the ATPase and transport activities of broad-acting multidrug resistance factor ABCC10 (MRP7). Cancer Res. 2012 Dec 15;72(24):6457-67.
18 Comprehensive evaluation of tamoxifen sequential biotransformation by the human cytochrome P450 system in vitro: prominent roles for CYP3A and CYP2D6. J Pharmacol Exp Ther. 2004 Sep;310(3):1062-75.
19 Endoxifen and other metabolites of tamoxifen inhibit human hydroxysteroid sulfotransferase 2A1 (hSULT2A1). Drug Metab Dispos. 2014 Nov;42(11):1843-50.
20 Functional significance of UDP-glucuronosyltransferase variants in the metabolism of active tamoxifen metabolites. Cancer Res. 2009 Mar 1;69(5):1892-900.
21 Genotoxicity of tamoxifen, tamoxifen epoxide and toremifene in human lymphoblastoid cells containing human cytochrome P450s. Carcinogenesis. 1994 Jan;15(1):5-9.
22 Metabolism of tamoxifen by recombinant human cytochrome P450 enzymes: formation of the 4-hydroxy, 4'-hydroxy and N-desmethyl metabolites and isomerization of trans-4-hydroxytamoxifen. Drug Metab Dispos. 2002 Aug;30(8):869-74.
23 Tamoxifen-induced adduct formation and cell stress in human endometrial glands. Drug Metab Dispos. 2010 Jan;38(1):200-7.
24 CYP2D6 polymorphisms and tamoxifen metabolism: clinical relevance. Curr Oncol Rep. 2010 Jan;12(1):7-15.
25 Polymorphisms in cytochrome P4503A5 (CYP3A5) may be associated with race and tumor characteristics, but not metabolism and side effects of tamoxifen in breast cancer patients. Cancer Lett. 2005 Jan 10;217(1):61-72.
26 Polymorphism of estrogen metabolism genes and cataract. Med Hypotheses. 2004;63(3):494-7.
27 Drug Interactions Flockhart Table
28 Tamoxifen inhibits cytochrome P450 2C9 activity in breast cancer patients. J Chemother. 2006 Aug;18(4):421-4.
29 Effect of tamoxifen on the enzymatic activity of human cytochrome CYP2B6. J Pharmacol Exp Ther. 2002 Jun;301(3):945-52.
30 Cytochrome P450 pharmacogenetics and cancer. Oncogene. 2006 Mar 13;25(11):1679-91.
31 Metabolism and transport of tamoxifen in relation to its effectiveness: new perspectives on an ongoing controversy. Future Oncol. 2014 Jan;10(1):107-22.
32 Glucuronidation of active tamoxifen metabolites by the human UDP glucuronosyltransferases. Drug Metab Dispos. 2007 Nov;35(11):2006-14.
33 Factor V Leiden mutation and thromboembolism risk in women receiving adjuvant tamoxifen for breast cancer. J Natl Cancer Inst. 2010 Jul 7;102(13):942-9. doi: 10.1093/jnci/djq211. Epub 2010 Jun 16.