General Information of Drug Combination (ID: DCMLH89)

Drug Combination Name
Letrozole Valrubicin
Indication
Disease Entry Status REF
Breast adenocarcinoma Investigative [1]
Component Drugs Letrozole   DMH07Y3 Valrubicin   DMOYJFK
Small molecular drug Small molecular drug
2D MOL 2D MOL
3D MOL 3D MOL is unavailable
High-throughput Screening Result Testing Cell Line: MDA-MB-468
Zero Interaction Potency (ZIP) Score: 2.87
Bliss Independence Score: 4.77
Loewe Additivity Score: 1.74
LHighest Single Agent (HSA) Score: 2.94

Molecular Interaction Atlas of This Drug Combination

Molecular Interaction Atlas (MIA)
Indication(s) of Letrozole
Disease Entry ICD 11 Status REF
Estrogen-receptor positive breast cancer N.A. Approved [2]
Hormonally-responsive breast cancer 2C60-2C65 Approved [3]
Letrozole Interacts with 1 DTT Molecule(s)
DTT Name DTT ID UniProt ID Mode of Action REF
Aromatase (CYP19A1) TTSZLWK CP19A_HUMAN Inhibitor [7]
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Letrozole Interacts with 3 DME Molecule(s)
DME Name DME ID UniProt ID Mode of Action REF
Cytochrome P450 3A4 (CYP3A4) DE4LYSA CP3A4_HUMAN Metabolism [8]
Aromatase (CYP19A1) DEQX145 CP19A_HUMAN Metabolism [9]
Cytochrome P450 2A6 (CYP2A6) DEJVYAZ CP2A6_HUMAN Metabolism [10]
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Letrozole Interacts with 18 DOT Molecule(s)
DOT Name DOT ID UniProt ID Mode of Action REF
Aromatase (CYP19A1) OTZ6XF74 CP19A_HUMAN Decreases Activity [11]
Cytochrome P450 3A4 (CYP3A4) OTQGYY83 CP3A4_HUMAN Increases Oxidation [12]
Cytochrome P450 2A6 (CYP2A6) OT52TWG3 CP2A6_HUMAN Increases Oxidation [12]
Adenylate kinase isoenzyme 1 (AK1) OT614AR3 KAD1_HUMAN Increases ADR [13]
Dickkopf-related protein 1 (DKK1) OTRDLUSP DKK1_HUMAN Increases Expression [14]
Follitropin subunit beta (FSHB) OTGLS283 FSHB_HUMAN Increases Expression [15]
Lutropin subunit beta (LHB) OT5GBOVJ LSHB_HUMAN Increases Expression [15]
Progesterone receptor (PGR) OT0FZ3QE PRGR_HUMAN Decreases Expression [16]
Leukemia inhibitory factor (LIF) OTO46S5S LIF_HUMAN Increases Expression [14]
Gap junction alpha-1 protein (GJA1) OTT94MKL CXA1_HUMAN Decreases Expression [17]
G1/S-specific cyclin-D1 (CCND1) OT8HPTKJ CCND1_HUMAN Decreases Expression [18]
G1/S-specific cyclin-D2 (CCND2) OTDULQF9 CCND2_HUMAN Decreases Expression [18]
Cyclin-dependent kinase inhibitor 1 (CDKN1A) OTQWHCZE CDN1A_HUMAN Increases Expression [19]
Leukemia inhibitory factor receptor (LIFR) OT36W9O5 LIFR_HUMAN Increases Expression [14]
Proliferation marker protein Ki-67 (MKI67) OTA8N1QI KI67_HUMAN Decreases Expression [16]
Small ribosomal subunit protein eS6 (RPS6) OTT4D1LN RS6_HUMAN Decreases Phosphorylation [18]
Lanosterol 14-alpha demethylase (CYP51A1) OTAYHG9C CP51A_HUMAN Decreases Activity [20]
Fibroblast growth factor 22 (FGF22) OTVIX6J0 FGF22_HUMAN Increases Expression [14]
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⏷ Show the Full List of 18 DOT(s)
Indication(s) of Valrubicin
Disease Entry ICD 11 Status REF
Bladder cancer 2C94 Approved [4]
In situ carcinoma N.A. Approved [5]
Urinary bladder cancer N.A. Approved [5]
Psoriasis vulgaris EA90 Phase 2 [6]
Valrubicin Interacts with 1 DTT Molecule(s)
DTT Name DTT ID UniProt ID Mode of Action REF
DNA topoisomerase II (TOP2) TT0IHXV TOP2A_HUMAN; TOP2B_HUMAN Inhibitor [21]
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Valrubicin Interacts with 1 DOT Molecule(s)
DOT Name DOT ID UniProt ID Mode of Action REF
Bile salt export pump (ABCB11) OTRU7THO ABCBB_HUMAN Decreases Activity [22]
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Test Results of This Drug Combination in Other Disease Systems

Indication DrugCom ID Cell Line Status REF
Adenocarcinoma DC9V811 OVCAR3 Investigative [23]
Childhood T acute lymphoblastic leukemia DC7ZUQD CCRF-CEM Investigative [23]
Glioblastoma DCUXP29 SNB-75 Investigative [23]
Renal cell carcinoma DCC3Z6L UO-31 Investigative [23]
Colon carcinoma DCDI3MI KM12 Investigative [1]
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References

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2 Letrozole 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: 5209).
4 Natural products as sources of new drugs over the last 25 years. J Nat Prod. 2007 Mar;70(3):461-77.
5 Valrubicin FDA Label
6 Drugs@FDA. U.S. Food and Drug Administration. U.S. Department of Health & Human Services. 2015
7 Aromatase inhibitors--theoretical concept and present experiences in the treatment of endometriosis. Zentralbl Gynakol. 2003 Jul-Aug;125(7-8):247-51.
8 Inhibition of drug metabolizing cytochrome P450s by the aromatase inhibitor drug letrozole and its major oxidative metabolite 4,4'-methanol-bisbenzonitrile in vitro. Cancer Chemother Pharmacol. 2009 Oct;64(5):867-75.
9 Double-blind, randomised, multicentre endocrine trial comparing two letrozole doses, in postmenopausal breast cancer patients. Eur J Cancer. 1999 Feb;35(2):208-13.
10 Letrozole concentration is associated with CYP2A6 variation but not with arthralgia in patients with breast cancer. Breast Cancer Res Treat. 2018 Nov;172(2):371-379.
11 Aromatase inhibition: translation into a successful therapeutic approach. Clin Cancer Res. 2005 Apr 15;11(8):2809-21. doi: 10.1158/1078-0432.CCR-04-2187.
12 Deactivation of anti-cancer drug letrozole to a carbinol metabolite by polymorphic cytochrome P450 2A6 in human liver microsomes. Xenobiotica. 2009 Nov;39(11):795-802. doi: 10.3109/00498250903171395.
13 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.
14 Clomiphene citrate versus letrozole: molecular analysis of the endometrium in women with polycystic ovary syndrome. Fertil Steril. 2011 Oct;96(4):1051-6. doi: 10.1016/j.fertnstert.2011.07.1092.
15 Aromatase inhibition, testosterone, and seizures. Epilepsy Behav. 2004 Apr;5(2):260-3. doi: 10.1016/j.yebeh.2003.12.001.
16 Aromatase inhibitors: cellular and molecular effects. J Steroid Biochem Mol Biol. 2005 May;95(1-5):83-9. doi: 10.1016/j.jsbmb.2005.04.010.
17 Inhibition of estrogen receptor reduces connexin 43 expression in breast cancers. Toxicol Appl Pharmacol. 2018 Jan 1;338:182-190. doi: 10.1016/j.taap.2017.11.020. Epub 2017 Nov 24.
18 Dual inhibition of mTOR and estrogen receptor signaling in vitro induces cell death in models of breast cancer. Clin Cancer Res. 2005 Jul 15;11(14):5319-28. doi: 10.1158/1078-0432.CCR-04-2402.
19 Synergistic activity of letrozole and sorafenib on breast cancer cells. Breast Cancer Res Treat. 2010 Nov;124(1):79-88. doi: 10.1007/s10549-009-0714-5. Epub 2010 Jan 7.
20 Comparison of lanosterol-14 alpha-demethylase (CYP51) of human and Candida albicans for inhibition by different antifungal azoles. Toxicology. 2006 Nov 10;228(1):24-32. doi: 10.1016/j.tox.2006.08.007. Epub 2006 Aug 12.
21 Metabolic activation of N-acylanthracyclines precedes their interaction with DNA topoisomerase II. NCI Monogr. 1987;(4):111-5.
22 A multifactorial approach to hepatobiliary transporter assessment enables improved therapeutic compound development. Toxicol Sci. 2013 Nov;136(1):216-41.
23 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.