Details of the Drug Combination

General Information of Drug Combination (ID: DCOF40E)

• Drug Combination Name: Theophylline + Eflornithine
• Indication: Chronic myelogenous leukemia; Status: Investigative [1]
• Component Drugs:
  Theophylline (DMRJFN9): Small molecular drug
  Eflornithine (DMJOQM3): Small molecular drug
• High-throughput Screening Result:
  Testing Cell Line: KBM-7
  Zero Interaction Potency (ZIP) Score: 6.43
  Bliss Independence Score: 6.43
  Loewe Additivity Score: 21.08
  LHighest Single Agent (HSA) Score: 21.08

Molecular Interaction Atlas of This Drug Combination

Indication(s) of Theophylline

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

Theophylline Interacts with 1 DTT Molecule(s)

DTT Name	DTT ID	UniProt ID	Mode of Action	REF
Adenosine receptor (ADOR)	TTSLI08	NOUNIPROTAC	Antagonist	[7]

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	[8]

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	[9]
Cytochrome P450 1A2 (CYP1A2)	DEJGDUW	CP1A2_HUMAN	Metabolism	[10]
Cytochrome P450 1A1 (CYP1A1)	DE6OQ3W	CP1A1_HUMAN	Metabolism	[11]
Cytochrome P450 2D6 (CYP2D6)	DECB0K3	CP2D6_HUMAN	Metabolism	[9]
Cytochrome P450 2E1 (CYP2E1)	DEVDYN7	CP2E1_HUMAN	Metabolism	[12]
Cytochrome P450 1B1 (CYP1B1)	DE9QHP6	CP1B1_HUMAN	Metabolism	[13]

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	[14]
Renin (REN)	OT52GZR2	RENI_HUMAN	Increases ADR	[14]
Alanine aminotransferase 1 (GPT)	OTOXOA0Q	ALAT1_HUMAN	Increases ADR	[14]
Cyclic GMP-AMP phosphodiesterase SMPDL3A (SMPDL3A)	OTQDYH8E	ASM3A_HUMAN	Increases ADR	[14]

Indication(s) of Eflornithine

Disease Entry	ICD 11	Status	REF
African trypanosomiasis	1F51	Approved	[4]
Trypanosomiasis	1D51-1F53	Phase 2	[5]
Colon cancer	2B90.Z	Investigative	[6]
Familial adenomatous polyposis	2B90.Y	Investigative	[6]

Eflornithine Interacts with 1 DTT Molecule(s)

DTT Name	DTT ID	UniProt ID	Mode of Action	REF
Ornithine decarboxylase (ODC1)	TTUMGNO	DCOR_HUMAN	Inhibitor	[15]

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] Theophylline FDA Label
• [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: 413).
• [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: 5176).
• [5] ClinicalTrials.gov (NCT01636128) Urinary Biomarker Study With Sulindac and Difluoromethylornithine. U.S. National Institutes of Health.
• [6] Eflornithine FDA Label
• [7] Emerging adenosine receptor agonists. Expert Opin Emerg Drugs. 2007 Sep;12(3):479-92.
• [8] 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.
• [9] Characterization of human cytochromes P450 involved in theophylline 8-hydroxylation. Biochem Pharmacol. 1995 Jul 17;50(2):205-11.
• [10] Association between common CYP1A2 polymorphisms and theophylline metabolism in non-smoking healthy volunteers. Basic Clin Pharmacol Toxicol. 2013 Apr;112(4):257-63.
• [11] Specificity of substrate and inhibitor probes for human cytochromes P450 1A1 and 1A2. J Pharmacol Exp Ther. 1993 Apr;265(1):401-7.
• [12] 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.
• [13] Oxidation of xenobiotics by recombinant human cytochrome P450 1B1. Drug Metab Dispos. 1997 May;25(5):617-22.
• [14] 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.
• [15] Plasmodium falciparum and Plasmodium berghei: effects of ornithine decarboxylase inhibitors on erythrocytic schizogony. Exp Parasitol. 1987 Oct;64(2):237-43.