Details of the Drug Combination

General Information of Drug Combination (ID: DCFTUOE)

• Drug Combination Name: Mefloquine + Prazosin
• Indication: Diffuse intrinsic pontine glioma; Status: Investigative [1]
• Component Drugs:
  Mefloquine (DMWT905): Small molecular drug
  Prazosin (DMCD9YG): Small molecular drug
• High-throughput Screening Result:
  Testing Cell Line: SU-DIPG-XIII
  Zero Interaction Potency (ZIP) Score: 43.46
  Bliss Independence Score: 48.372
  Loewe Additivity Score: 2.599
  LHighest Single Agent (HSA) Score: 15.533

Molecular Interaction Atlas of This Drug Combination

Indication(s) of Mefloquine

Disease Entry	ICD 11	Status	REF
Malaria	1F40-1F45	Approved	[2]
Coronavirus Disease 2019 (COVID-19)	1D6Y	Phase 2	[3]
Middle East Respiratory Syndrome (MERS)	1D64	Preclinical	[4]
Severe acute respiratory syndrome (SARS)	1D65	Preclinical	[4]
Progressive multifocal leukoencephalopathy	8A45.02	Investigative	[5]

Mefloquine Interacts with 1 DTT Molecule(s)

DTT Name	DTT ID	UniProt ID	Mode of Action	REF
Plasmodium 80S ribosome (Malaria 80S)	TTT28H3	NOUNIPROTAC	Binder	[8]

Mefloquine Interacts with 1 DTP Molecule(s)

DTP Name	DTP ID	UniProt ID	Mode of Action	REF
P-glycoprotein 1 (ABCB1)	DTUGYRD	MDR1_HUMAN	Substrate	[9]

Mefloquine Interacts with 1 DME Molecule(s)

DME Name	DME ID	UniProt ID	Mode of Action	REF
Cytochrome P450 3A4 (CYP3A4)	DE4LYSA	CP3A4_HUMAN	Metabolism	[10]

Indication(s) of Prazosin

Disease Entry	ICD 11	Status	REF
Benign prostatic hyperplasia	GA90	Approved	[6]
Congestive heart failure	BD10	Approved	[6]
Hypertension	BA00-BA04	Approved	[6]
Coronavirus Disease 2019 (COVID-19)	1D6Y	Phase 2	[7]

Prazosin Interacts with 1 DTT Molecule(s)

DTT Name	DTT ID	UniProt ID	Mode of Action	REF
Adrenergic receptor Alpha-1 (ADRA1)	TTG28O6	NOUNIPROTAC	Antagonist	[11]

Prazosin Interacts with 3 DTP Molecule(s)

DTP Name	DTP ID	UniProt ID	Mode of Action	REF
P-glycoprotein 1 (ABCB1)	DTUGYRD	MDR1_HUMAN	Substrate	[12]
Breast cancer resistance protein (ABCG2)	DTI7UX6	ABCG2_HUMAN	Substrate	[13]
Organic cation transporter 1 (SLC22A1)	DTT79CX	S22A1_HUMAN	Substrate	[14]

Prazosin Interacts with 1 DME Molecule(s)

DME Name	DME ID	UniProt ID	Mode of Action	REF
Cytochrome P450 1A1 (CYP1A1)	DE6OQ3W	CP1A1_HUMAN	Metabolism	[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] FDA Approved Drug Products from FDA Official Website. 2019. Application Number: (NDA) 019578
• [3] ClinicalTrials.gov (NCT04347031) An Open Randomized Study of the Effectiveness of Mefloquine for the Treatment of Patients With COVID19. U.S. National Institutes of Health.
• [4] Repurposing of clinically developed drugs for treatment of Middle East respiratory syndrome coronavirus infection. Antimicrob Agents Chemother. 2014 Aug;58(8):4885-93.
• [5] Mefloquine FDA Label
• [6] Drugs@FDA. U.S. Food and Drug Administration. U.S. Department of Health & Human Services. 2015
• [7] Prazosin to Prevent COVID-19 (PREVENT-COVID Trial) (PREVENT)
• [8] An ultrastructural study of the effects of mefloquine on malaria parasites. Am J Trop Med Hyg. 1987 Jan;36(1):9-14.
• [9] Polymorphisms in human MDR1 (P-glycoprotein): recent advances and clinical relevance. Clin Pharmacol Ther. 2004 Jan;75(1):13-33.
• [10] Effect of rifampin on plasma concentrations of mefloquine in healthy volunteers. J Pharm Pharmacol. 2000 Oct;52(10):1265-9.
• [11] Adventitia removal does not modify the alphaID-adrenoceptors response in aorta during hypertension and ageing. Auton Autacoid Pharmacol. 2009 Jul;29(3):117-33.
• [12] Evidence for two nonidentical drug-interaction sites in the human P-glycoprotein. Proc Natl Acad Sci U S A. 1997 Sep 30;94(20):10594-9.
• [13] P-glycoprotein and breast cancer resistance protein expression and function at the blood-brain barrier and blood-cerebrospinal fluid barrier (choroid plexus) in streptozotocin-induced diabetes in rats. Brain Res. 2011 Jan 25;1370:238-45.
• [14] Implications of genetic polymorphisms in drug transporters for pharmacotherapy. Cancer Lett. 2006 Mar 8;234(1):4-33.
• [15] Role of adrenoceptor-linked signaling pathways in the regulation of CYP1A1 gene expression. Biochem Pharmacol. 2005 Jan 15;69(2):277-87.