Details of the Drug Combination

General Information of Drug Combination (ID: DCS1UBI)

• Drug Combination Name: Dextromethorphan + Tiagabine
• Indication: Chronic myelogenous leukemia; Status: Investigative [1]
• Component Drugs:
  Dextromethorphan (DMUDJZM): Small molecular drug
  Tiagabine (DMKSQG0): Small molecular drug
• High-throughput Screening Result:
  Testing Cell Line: KBM-7
  Zero Interaction Potency (ZIP) Score: 7.67
  Bliss Independence Score: 7.67
  Loewe Additivity Score: 9.96
  LHighest Single Agent (HSA) Score: 9.96

Molecular Interaction Atlas of This Drug Combination

Indication(s) of Dextromethorphan

Disease Entry	ICD 11	Status	REF
Allergic rhinitis	CA08.0	Approved	[2]
Common cold	CA00	Approved	[2]
Cough	MD12	Approved	[3]
Fever	MG26	Approved	[2]
Headache	8A80-8A84	Approved	[2]
Rhinitis	FA20	Approved	[2]
Vasomotor/allergic rhinitis	CA08	Approved	[2]

Dextromethorphan Interacts with 1 DTT Molecule(s)

DTT Name	DTT ID	UniProt ID	Mode of Action	REF
Opioid receptor sigma 1 (OPRS1)	TT5TPI6	SGMR1_HUMAN	Agonist	[6]

Dextromethorphan Interacts with 10 DME Molecule(s)

DME Name	DME ID	UniProt ID	Mode of Action	REF
Cytochrome P450 3A4 (CYP3A4)	DE4LYSA	CP3A4_HUMAN	Metabolism	[7]
Cytochrome P450 2D6 (CYP2D6)	DECB0K3	CP2D6_HUMAN	Metabolism	[8]
Cytochrome P450 3A5 (CYP3A5)	DEIBDNY	CP3A5_HUMAN	Metabolism	[9]
Cytochrome P450 3A7 (CYP3A7)	DERD86B	CP3A7_HUMAN	Metabolism	[10]
Cytochrome P450 2C9 (CYP2C9)	DE5IED8	CP2C9_HUMAN	Metabolism	[11]
Cytochrome P450 2B6 (CYP2B6)	DEPKLMQ	CP2B6_HUMAN	Metabolism	[12]
Mephenytoin 4-hydroxylase (CYP2C19)	DEGTFWK	CP2CJ_HUMAN	Metabolism	[11]
Cholesterol 24-hydroxylase (CYP46A1)	DEKP5HX	CP46A_HUMAN	Metabolism	[13]
Cytochrome P450 102A1 (cyp102)	DE4OGUF	CPXB_BACMB	Metabolism	[14]
Cytochrome P450 130A1 (cyp130)	DE6CQ0I	CP130_MYCTU	Metabolism	[15]

Dextromethorphan Interacts with 12 DOT Molecule(s)

DOT Name	DOT ID	UniProt ID	Mode of Action	REF
Cytochrome P450 3A4 (CYP3A4)	OTQGYY83	CP3A4_HUMAN	Decreases Methylation	[16]
Cytochrome P450 3A5 (CYP3A5)	OTSXFBXB	CP3A5_HUMAN	Decreases Methylation	[16]
Cholesterol 24-hydroxylase (CYP46A1)	OTJ27FOX	CP46A_HUMAN	Decreases Methylation	[13]
Cytochrome P450 2D6 (CYP2D6)	OTZJC802	CP2D6_HUMAN	Increases Response To Substance	[17]
Tumor necrosis factor (TNF)	OT4IE164	TNFA_HUMAN	Increases Secretion	[18]
Beta-hexosaminidase subunit beta (HEXB)	OTROYLCR	HEXB_HUMAN	Increases Secretion	[18]
Interleukin-8 (CXCL8)	OTS7T5VH	IL8_HUMAN	Increases Secretion	[18]
C-C motif chemokine 2 (CCL2)	OTAD2HEL	CCL2_HUMAN	Increases Secretion	[18]
Potassium voltage-gated channel subfamily H member 2 (KCNH2)	OTZX881H	KCNH2_HUMAN	Decreases Activity	[19]
Mas-related G-protein coupled receptor member X2 (MRGPRX2)	OT2XA799	MRGX2_HUMAN	Affects Binding	[18]
Arylamine N-acetyltransferase 2 (NAT2)	OTBPDQOY	ARY2_HUMAN	Affects Metabolism	[5]
Cytochrome P450 1A2 (CYP1A2)	OTLLBX48	CP1A2_HUMAN	Affects Metabolism	[5]

Indication(s) of Tiagabine

Disease Entry	ICD 11	Status	REF
Epilepsy	8A60-8A68	Approved	[4]
Anxiety disorder	6B00-6B0Z	Phase 2	[4]

Tiagabine Interacts with 2 DTT Molecule(s)

DTT Name	DTT ID	UniProt ID	Mode of Action	REF
Gamma-aminobutyric acid uptake (GABAU)	TTV9MQG	NOUNIPROTAC	Inhibitor	[20]
GABA transporter GAT-1 (SLC6A1)	TTPRKM0	SC6A1_HUMAN	Inhibitor	[21]

Tiagabine Interacts with 2 DME Molecule(s)

DME Name	DME ID	UniProt ID	Mode of Action	REF
Cytochrome P450 3A4 (CYP3A4)	DE4LYSA	CP3A4_HUMAN	Metabolism	[22]
UDP-glucuronosyltransferase 1A1 (UGT1A1)	DEYGVN4	UD11_HUMAN	Metabolism	[23]

Tiagabine Interacts with 2 DOT Molecule(s)

DOT Name	DOT ID	UniProt ID	Mode of Action	REF
Aromatase (CYP19A1)	OTZ6XF74	CP19A_HUMAN	Decreases Activity	[24]
Sodium- and chloride-dependent GABA transporter 1 (SLC6A1)	OTLCJJF3	SC6A1_HUMAN	Decreases Activity	[25]

References

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• [18] Dextromethorphan - A widely-used cough suppressant - Induces local anaphylaxis via MRGPRX2 on mast cells. Chem Biol Interact. 2020 Oct 1;330:109248. doi: 10.1016/j.cbi.2020.109248. Epub 2020 Aug 29.
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