General Information of DFM (ID: F11381)
Name	Letrozole 2.5 mg tablet
Company	Arab Pharmaceutical Manufacturing
Active Pharmaceutical Ingredient (API)	Letrozole		API Info click to show the detail info of this API
	Breast cancer		ICD-11: 2C60	Approved
Drug Inactive Ingredient (DIGs)
	DIG ID	DIG Info	DIG Name	DIG Functional Class
	E0M0IE	DIG Info	Ferric hydroxide oxide yellow	Colorant
	E00DHW	DIG Info	Lactose monohydrate	Binding agent ...
	E01UTP	DIG Info	Magnesium stearate	lubricant
	E0L0MR	DIG Info	Sunset yellow FCF	Colorant
	E0QY1F	DIG Info	Talc	Anticaking agent ...
	E05BSD	DIG Info	Titanium dioxide	Coating agent ...

Full List of Biological Targets of DIG (DBTs) Regulated by DIG(s) in This DFM
Oxidoreductase (ORase)
DBT Name: Albendazole monooxygenase (CYP3A4)				Click to Show/Hide
Detailed Information	DBT Info click to show the detail info of this DBT
Experiment for Assessing the Biological Activity of the Studied DIG on This DBT
Interacting DIG	Magnesium stearate
Biological Activity	Protein expression downregulation (tested by experiment)					[1]
Tested Species	Homo sapiens (Human)
UniProt ID	CP3A4_HUMAN
Potential-driven transporter (PDT)
DBT Name: Solute carrier SLCO2B1 (OATPB)				Click to Show/Hide
Detailed Information	DBT Info click to show the detail info of this DBT
Experiment (1) for Assessing the Biological Activity of the Studied DIG on This DBT
Interacting DIG	Sunset yellow FCF
Biological Activity	Inhibition ratio = 54.5 % (tested by experiment)					[2]
Tested Species	Homo sapiens (Human)
UniProt ID	SO2B1_HUMAN
Experiment (2) for Assessing the Biological Activity of the Studied DIG on This DBT
Interacting DIG	Sunset yellow FCF
Biological Activity	Ki = 68.4 uM (tested by experiment)					[2]
Tested Species	Homo sapiens (Human)
UniProt ID	SO2B1_HUMAN
Experiment (3) for Assessing the Biological Activity of the Studied DIG on This DBT
Interacting DIG	Sunset yellow FCF
Biological Activity	Ki = 74 uM (tested by experiment)					[3]
Tested Species	Homo sapiens (Human)
UniProt ID	SO2B1_HUMAN
Other protein families (OPF)
DBT Name: Thrombopoietin receptor (MPL)				Click to Show/Hide
Detailed Information	DBT Info click to show the detail info of this DBT
Experiment for Assessing the Biological Activity of the Studied DIG on This DBT
Interacting DIG	Sunset yellow FCF
Biological Activity	EC50 = 3000 nM (estimated based on the structural similarity with CHEMBL122867 )					[4]
Structural Similarity	Tanimoto coefficient = 0.93081761
Tested Species	Homo sapiens (Human)
UniProt ID	TPOR_HUMAN

References
1	Effects of commonly used excipients on the expression of CYP3A4 in colon and liver cells. Pharm Res. 2010 Aug;27(8):1703-12.
2	Bacterial metabolism rescues the inhibition of intestinal drug absorption by food and drug additives. Proc Natl Acad Sci U S A. 2020 Jul 7;117(27):16009-16018.
3	The activities of drug inactive ingredients on biological targets. Science. 2020 Jul 24;369(6502):403-413.
4	Hydrazinonaphthalene and azonaphthalene thrombopoietin mimics are nonpeptidyl promoters of megakaryocytopoiesis. J Med Chem. 2001 Oct 25; 44(22):3730-45.

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