Details of the Drug Combination

General Information of Drug Combination (ID: DCQY79O)

• Drug Combination Name: Clindamycin + Chlorzoxazone
• Indication: Chronic myelogenous leukemia; Status: Investigative [1]
• Component Drugs:
  Clindamycin (DM15HL8): Small molecular drug
  Chlorzoxazone (DMCYVDT): Small molecular drug
• High-throughput Screening Result:
  Testing Cell Line: KBM-7
  Zero Interaction Potency (ZIP) Score: 3.38
  Bliss Independence Score: 3.38
  Loewe Additivity Score: 4.13
  LHighest Single Agent (HSA) Score: 4.13

Molecular Interaction Atlas of This Drug Combination

Indication(s) of Clindamycin

Disease Entry	ICD 11	Status	REF
Acne vulgaris	ED80	Approved	[2]
Aspiration pneumonia	N.A.	Approved	[3]
Bacteremia	1A73	Approved	[3]
Bacterial vaginosis	MF3A	Approved	[3]
Pleural empyema	N.A.	Approved	[3]
Staphylococcal pneumonia	N.A.	Approved	[3]
Staphylococcus aureus infection	N.A.	Approved	[3]
Streptococcal pneumonia	N.A.	Approved	[3]
Pelvic inflammatory disease	GA05	Investigative	[3]

Clindamycin Interacts with 1 DTT Molecule(s)

DTT Name	DTT ID	UniProt ID	Mode of Action	REF
Bacterial 50S ribosomal RNA (Bact 50S rRNA)	TTUWYEA	NOUNIPROTAC	Binder	[5]

Clindamycin Interacts with 2 DME Molecule(s)

DME Name	DME ID	UniProt ID	Mode of Action	REF
Cytochrome P450 3A4 (CYP3A4)	DE4LYSA	CP3A4_HUMAN	Metabolism	[6]
Beta-lactamase (blaB)	DEMSNER	A4LA84_EDWTA	Metabolism	[7]

Clindamycin Interacts with 4 DOT Molecule(s)

DOT Name	DOT ID	UniProt ID	Mode of Action	REF
Cytochrome P450 3A4 (CYP3A4)	OTQGYY83	CP3A4_HUMAN	Increases Expression	[8]
HLA class II histocompatibility antigen, DRB1 beta chain (HLA-DRB1)	OTRGGIFP	DRB1_HUMAN	Affects Expression	[9]
HLA class I histocompatibility antigen, alpha chain E (HLA-E)	OTX1CTFB	HLAE_HUMAN	Affects Expression	[9]
Collagenase 3 (MMP13)	OTY8BZIE	MMP13_HUMAN	Increases Expression	[10]

Indication(s) of Chlorzoxazone

Disease Entry	ICD 11	Status	REF
Acute pain	MG31	Approved	[4]

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	[12]

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	[13]
Cytochrome P450 1A2 (CYP1A2)	DEJGDUW	CP1A2_HUMAN	Metabolism	[14]
Cytochrome P450 2A6 (CYP2A6)	DEJVYAZ	CP2A6_HUMAN	Metabolism	[15]
Cytochrome P450 2D6 (CYP2D6)	DECB0K3	CP2D6_HUMAN	Metabolism	[15]
Cytochrome P450 2E1 (CYP2E1)	DEVDYN7	CP2E1_HUMAN	Metabolism	[16]
Cytochrome P450 102A1 (cyp102)	DE4OGUF	CPXB_BACMB	Metabolism	[17]

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	[18]
Cytochrome P450 1B1 (CYP1B1)	OTYXFLSD	CP1B1_HUMAN	Decreases Activity	[19]
Arylamine N-acetyltransferase 2 (NAT2)	OTBPDQOY	ARY2_HUMAN	Affects Metabolism	[11]

References

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• [2] Drugs@FDA. U.S. Food and Drug Administration. U.S. Department of Health & Human Services. 2015
• [3] Clindamycin 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: 2322).
• [5] Structural basis for the interaction of antibiotics with the peptidyl transferase centre in eubacteria. Nature. 2001 Oct 25;413(6858):814-21.
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• [7] Comparison of antimicrobial susceptibility, beta-lactamase production, plasmid analysis and serum bactericidal activity in Edwardsiella tarda, E. ictaluri and E. hoshinae. J Med Microbiol. 1993 Oct;39(4):273-81.
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• [9] Systems pharmacological analysis of drugs inducing stevens-johnson syndrome and toxic epidermal necrolysis. Chem Res Toxicol. 2015 May 18;28(5):927-34. doi: 10.1021/tx5005248. Epub 2015 Apr 3.
• [10] Chloramphenicol causes mitochondrial stress, decreases ATP biosynthesis, induces matrix metalloproteinase-13 expression, and solid-tumor cell invasion. Toxicol Sci. 2010 Jul;116(1):140-50. doi: 10.1093/toxsci/kfq085. Epub 2010 Mar 25.
• [11] 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.
• [12] Chlorzoxazone inhibits contraction of rat thoracic aorta. Eur J Pharmacol. 2006 Sep 18;545(2-3):161-6.
• [13] Summary of information on human CYP enzymes: human P450 metabolism data. Drug Metab Rev. 2002 Feb-May;34(1-2):83-448.
• [14] Inhibitory monoclonal antibodies to human cytochrome P450 1A2: analysis of phenacetin O-deethylation in human liver. Pharmacogenetics. 1998 Oct;8(5):375-82.
• [15] 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.
• [16] Trimethadione metabolism by human liver cytochrome P450: evidence for the involvement of CYP2E1. Xenobiotica. 1998 Nov;28(11):1041-7.
• [17] 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.
• [18] 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.
• [19] 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.