Details of the Drug Combination

General Information of Drug Combination (ID: DCCFYH3)

• Drug Combination Name: Chlorzoxazone + Theophylline
• Indication: Chronic myelogenous leukemia; Status: Investigative [1]
• Component Drugs:
  Chlorzoxazone (DMCYVDT): Small molecular drug
  Theophylline (DMRJFN9): Small molecular drug
• High-throughput Screening Result:
  Testing Cell Line: KBM-7
  Zero Interaction Potency (ZIP) Score: 1.83
  Bliss Independence Score: 1.83
  Loewe Additivity Score: 2.38
  LHighest Single Agent (HSA) Score: 2.42

Molecular Interaction Atlas of This Drug Combination

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]

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]

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]

Indication(s) of Theophylline

Disease Entry	ICD 11	Status	REF
Bronchitis	CA20	Approved	[3]
Chronic obstructive pulmonary disease	CA22	Approved	[4]
Lung cancer	2C25.0	Approved	[3]
Non-small-cell lung cancer	2C25.Y	Approved	[3]
Pulmonary disease	1B10-1F85	Approved	[3]
Pulmonary emphysema	CA21.Z	Approved	[3]
Severe asthma	CA23	Approved	[3]
Asthma	CA23	Investigative	[3]

Theophylline Interacts with 1 DTT Molecule(s)

DTT Name	DTT ID	UniProt ID	Mode of Action	REF
Adenosine receptor (ADOR)	TTSLI08	NOUNIPROTAC	Antagonist	[14]

Theophylline Interacts with 1 DTP Molecule(s)

DTP Name	DTP ID	UniProt ID	Mode of Action	REF
Organic anion transporter 2 (SLC22A7)	DT0OC1Q	S22A7_HUMAN	Substrate	[15]

Theophylline Interacts with 6 DME Molecule(s)

DME Name	DME ID	UniProt ID	Mode of Action	REF
Cytochrome P450 3A4 (CYP3A4)	DE4LYSA	CP3A4_HUMAN	Metabolism	[16]
Cytochrome P450 1A2 (CYP1A2)	DEJGDUW	CP1A2_HUMAN	Metabolism	[17]
Cytochrome P450 1A1 (CYP1A1)	DE6OQ3W	CP1A1_HUMAN	Metabolism	[18]
Cytochrome P450 2D6 (CYP2D6)	DECB0K3	CP2D6_HUMAN	Metabolism	[16]
Cytochrome P450 2E1 (CYP2E1)	DEVDYN7	CP2E1_HUMAN	Metabolism	[19]
Cytochrome P450 1B1 (CYP1B1)	DE9QHP6	CP1B1_HUMAN	Metabolism	[20]

Theophylline Interacts with 4 DOT Molecule(s)

DOT Name	DOT ID	UniProt ID	Mode of Action	REF
Cytochrome P450 2E1 (CYP2E1)	OTHQ17JG	CP2E1_HUMAN	Increases ADR	[21]
Renin (REN)	OT52GZR2	RENI_HUMAN	Increases ADR	[21]
Alanine aminotransferase 1 (GPT)	OTOXOA0Q	ALAT1_HUMAN	Increases ADR	[21]
Cyclic GMP-AMP phosphodiesterase SMPDL3A (SMPDL3A)	OTQDYH8E	ASM3A_HUMAN	Increases ADR	[21]

References

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• [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] Theophylline FDA Label
• [4] 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: 413).
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• [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] Emerging adenosine receptor agonists. Expert Opin Emerg Drugs. 2007 Sep;12(3):479-92.
• [15] Possible involvement of organic anion transporter 2 on the interaction of theophylline with erythromycin in the human liver. Drug Metab Dispos. 2005 May;33(5):619-22.
• [16] Characterization of human cytochromes P450 involved in theophylline 8-hydroxylation. Biochem Pharmacol. 1995 Jul 17;50(2):205-11.
• [17] Association between common CYP1A2 polymorphisms and theophylline metabolism in non-smoking healthy volunteers. Basic Clin Pharmacol Toxicol. 2013 Apr;112(4):257-63.
• [18] Specificity of substrate and inhibitor probes for human cytochromes P450 1A1 and 1A2. J Pharmacol Exp Ther. 1993 Apr;265(1):401-7.
• [19] Construction and assessment of models of CYP2E1: predictions of metabolism from docking, molecular dynamics, and density functional theoretical calculations. J Med Chem. 2003 Apr 24;46(9):1645-60.
• [20] Oxidation of xenobiotics by recombinant human cytochrome P450 1B1. Drug Metab Dispos. 1997 May;25(5):617-22.
• [21] ADReCS-Target: target profiles for aiding drug safety research and application. Nucleic Acids Res. 2018 Jan 4;46(D1):D911-D917. doi: 10.1093/nar/gkx899.