Details of the Drug Combination

General Information of Drug Combination (ID: DCT3PPQ)

• Drug Combination Name: Epirubicin + Letrozole
• Indication: Ovarian serous cystadenocarcinoma; Status: Investigative [1]
• Component Drugs:
  Epirubicin (DMPDW6T): Small molecular drug
  Letrozole (DMH07Y3): Small molecular drug
• High-throughput Screening Result:
  Testing Cell Line: SK-OV-3
  Zero Interaction Potency (ZIP) Score: 0.72
  Bliss Independence Score: 4.36
  Loewe Additivity Score: 1.73
  LHighest Single Agent (HSA) Score: 2.44

Molecular Interaction Atlas of This Drug Combination

Indication(s) of Epirubicin

Disease Entry	ICD 11	Status	REF
Solid tumour/cancer	2A00-2F9Z	Approved	[2]

Epirubicin 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	Modulator	[5]

Epirubicin Interacts with 4 DTP Molecule(s)

DTP Name	DTP ID	UniProt ID	Mode of Action	REF
Multidrug resistance-associated protein 1 (ABCC1)	DTSYQGK	MRP1_HUMAN	Substrate	[6]
Multidrug resistance-associated protein 2 (ABCC2)	DTFI42L	MRP2_HUMAN	Substrate	[7]
P-glycoprotein 1 (ABCB1)	DTUGYRD	MDR1_HUMAN	Substrate	[7]
Breast cancer resistance protein (ABCG2)	DTI7UX6	ABCG2_HUMAN	Substrate	[7]

Epirubicin Interacts with 1 DME Molecule(s)

DME Name	DME ID	UniProt ID	Mode of Action	REF
UDP-glucuronosyltransferase 2B7 (UGT2B7)	DEB3CV1	UD2B7_HUMAN	Metabolism	[8]

Epirubicin Interacts with 30 DOT Molecule(s)

DOT Name	DOT ID	UniProt ID	Mode of Action	REF
ATP-binding cassette sub-family C member 2 (ABCC2)	OTJSIGV5	MRP2_HUMAN	Increases Expression	[9]
Multidrug resistance-associated protein 1 (ABCC1)	OTGUN89S	MRP1_HUMAN	Increases Expression	[9]
ATP-dependent translocase ABCB1 (ABCB1)	OTEJROBO	MDR1_HUMAN	Increases Expression	[9]
Broad substrate specificity ATP-binding cassette transporter ABCG2 (ABCG2)	OTW8V2V1	ABCG2_HUMAN	Decreases Response To Substance	[10]
Natriuretic peptides A (NPPA)	OTMQNTNX	ANF_HUMAN	Increases Expression	[11]
Cellular tumor antigen p53 (TP53)	OTIE1VH3	P53_HUMAN	Increases Expression	[12]
Interleukin-6 (IL6)	OTUOSCCU	IL6_HUMAN	Increases Expression	[13]
Interleukin-6 receptor subunit alpha (IL6R)	OTCQL07Z	IL6RA_HUMAN	Increases Expression	[14]
Retinoic acid receptor alpha (RARA)	OT192V9V	RARA_HUMAN	Affects Mutagenesis	[15]
Apoptosis regulator Bcl-2 (BCL2)	OT9DVHC0	BCL2_HUMAN	Increases Expression	[9]
Ribosomal protein S6 kinase beta-1 (RPS6KB1)	OTAELNGX	KS6B1_HUMAN	Increases Phosphorylation	[16]
Mitogen-activated protein kinase 3 (MAPK3)	OTCYKGKO	MK03_HUMAN	Increases Phosphorylation	[16]
Mitogen-activated protein kinase 1 (MAPK1)	OTH85PI5	MK01_HUMAN	Increases Phosphorylation	[16]
Protein PML (PML)	OT6SM2GD	PML_HUMAN	Affects Mutagenesis	[15]
Caspase-3 (CASP3)	OTIJRBE7	CASP3_HUMAN	Increases Expression	[17]
Caspase-9 (CASP9)	OTD4RFFG	CASP9_HUMAN	Increases Expression	[12]
Apoptosis regulator BAX (BAX)	OTAW0V4V	BAX_HUMAN	Increases Expression	[12]
Eukaryotic translation initiation factor 4E-binding protein 1 (EIF4EBP1)	OTHBQVD5	4EBP1_HUMAN	Increases Phosphorylation	[16]
FK506-binding protein-like (FKBPL)	OTR9ND6K	FKBPL_HUMAN	Increases Expression	[17]
Tumor necrosis factor receptor superfamily member 1A (TNFRSF1A)	OT2D9DOV	TNR1A_HUMAN	Increases ADR	[18]
MARVEL domain-containing protein 1 (MARVELD1)	OT5CPOJE	MALD1_HUMAN	Increases Response To Substance	[19]
Phospholysine phosphohistidine inorganic pyrophosphate phosphatase (LHPP)	OT9AGAIJ	LHPP_HUMAN	Increases ADR	[18]
Alpha-protein kinase 1 (ALPK1)	OTBW6SGD	ALPK1_HUMAN	Increases ADR	[20]
Baculoviral IAP repeat-containing protein 6 (BIRC6)	OTCQJAB0	BIRC6_HUMAN	Decreases Response To Substance	[21]
Baculoviral IAP repeat-containing protein 5 (BIRC5)	OTILXZYL	BIRC5_HUMAN	Decreases Response To Substance	[22]
Superoxide dismutase , mitochondrial (SOD2)	OTIWXGZ9	SODM_HUMAN	Affects Response To Substance	[23]
Protein S100-P (S100P)	OTJCXNJG	S100P_HUMAN	Increases Response To Substance	[24]
Pleckstrin homology-like domain family A member 2 (PHLDA2)	OTMV9DPP	PHLA2_HUMAN	Increases Response To Substance	[25]
Little elongation complex subunit 1 (ICE1)	OTOXTBUH	ICE1_HUMAN	Increases ADR	[18]
Microcephalin (MCPH1)	OTYT3TT5	MCPH1_HUMAN	Increases ADR	[20]

Indication(s) of Letrozole

Disease Entry	ICD 11	Status	REF
Estrogen-receptor positive breast cancer	N.A.	Approved	[3]
Hormonally-responsive breast cancer	2C60-2C65	Approved	[4]

Letrozole Interacts with 1 DTT Molecule(s)

DTT Name	DTT ID	UniProt ID	Mode of Action	REF
Aromatase (CYP19A1)	TTSZLWK	CP19A_HUMAN	Inhibitor	[26]

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	[27]
Aromatase (CYP19A1)	DEQX145	CP19A_HUMAN	Metabolism	[28]
Cytochrome P450 2A6 (CYP2A6)	DEJVYAZ	CP2A6_HUMAN	Metabolism	[29]

Letrozole Interacts with 18 DOT Molecule(s)

DOT Name	DOT ID	UniProt ID	Mode of Action	REF
Aromatase (CYP19A1)	OTZ6XF74	CP19A_HUMAN	Decreases Activity	[30]
Cytochrome P450 3A4 (CYP3A4)	OTQGYY83	CP3A4_HUMAN	Increases Oxidation	[31]
Cytochrome P450 2A6 (CYP2A6)	OT52TWG3	CP2A6_HUMAN	Increases Oxidation	[31]
Adenylate kinase isoenzyme 1 (AK1)	OT614AR3	KAD1_HUMAN	Increases ADR	[32]
Dickkopf-related protein 1 (DKK1)	OTRDLUSP	DKK1_HUMAN	Increases Expression	[33]
Follitropin subunit beta (FSHB)	OTGLS283	FSHB_HUMAN	Increases Expression	[34]
Lutropin subunit beta (LHB)	OT5GBOVJ	LSHB_HUMAN	Increases Expression	[34]
Progesterone receptor (PGR)	OT0FZ3QE	PRGR_HUMAN	Decreases Expression	[35]
Leukemia inhibitory factor (LIF)	OTO46S5S	LIF_HUMAN	Increases Expression	[33]
Gap junction alpha-1 protein (GJA1)	OTT94MKL	CXA1_HUMAN	Decreases Expression	[36]
G1/S-specific cyclin-D1 (CCND1)	OT8HPTKJ	CCND1_HUMAN	Decreases Expression	[37]
G1/S-specific cyclin-D2 (CCND2)	OTDULQF9	CCND2_HUMAN	Decreases Expression	[37]
Cyclin-dependent kinase inhibitor 1 (CDKN1A)	OTQWHCZE	CDN1A_HUMAN	Increases Expression	[38]
Leukemia inhibitory factor receptor (LIFR)	OT36W9O5	LIFR_HUMAN	Increases Expression	[33]
Proliferation marker protein Ki-67 (MKI67)	OTA8N1QI	KI67_HUMAN	Decreases Expression	[35]
Small ribosomal subunit protein eS6 (RPS6)	OTT4D1LN	RS6_HUMAN	Decreases Phosphorylation	[37]
Lanosterol 14-alpha demethylase (CYP51A1)	OTAYHG9C	CP51A_HUMAN	Decreases Activity	[39]
Fibroblast growth factor 22 (FGF22)	OTVIX6J0	FGF22_HUMAN	Increases Expression	[33]

Test Results of This Drug Combination in Other Disease Systems

Indication	DrugCom ID	Cell Line	Status	REF
Adult T acute lymphoblastic leukemia	DCTRRTW	MOLT-4	Investigative	[40]
Anaplastic large cell lymphoma	DCXHEYT	SR	Investigative	[40]
Astrocytoma	DCGWXTI	SNB-19	Investigative	[40]
Clear cell renal cell carcinoma	DCVMN6Z	A498	Investigative	[40]
Glioma	DC44MPA	SF-268	Investigative	[40]
Renal cell carcinoma	DCVXTNE	SN12C	Investigative	[40]
Invasive ductal carcinoma	DCPYJ3T	BT-549	Investigative	[41]
Invasive ductal carcinoma	DC6U98C	HS 578T	Investigative	[41]
Amelanotic melanoma	DCQDL57	M14	Investigative	[1]
Amelanotic melanoma	DC6X7KU	MDA-MB-435	Investigative	[1]
Cutaneous melanoma	DCDHQCI	SK-MEL-5	Investigative	[1]
High grade ovarian serous adenocarcinoma	DCKH9C1	OVCAR-8	Investigative	[1]
High grade ovarian serous adenocarcinoma	DC1XUKC	NCI\\/ADR-RES	Investigative	[1]
Melanoma	DCUWSXO	UACC-257	Investigative	[1]
Non-small cell lung carcinoma	DCWT86F	HOP-92	Investigative	[1]
Pleural epithelioid mesothelioma	DC9YIGW	NCI-H226	Investigative	[1]

References

• [1] Loss of function mutations in VARS encoding cytoplasmic valyl-tRNA synthetase cause microcephaly, seizures, and progressive cerebral atrophy.Hum Genet. 2018 Apr;137(4):293-303. doi: 10.1007/s00439-018-1882-3. Epub 2018 Apr 24.
• [2] New drugs for the treatment of cancer, 1990-2001. Isr Med Assoc J. 2002 Dec;4(12):1124-31.
• [3] Letrozole 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: 5209).
• [5] Drugs@FDA. U.S. Food and Drug Administration. U.S. Department of Health & Human Services.
• [6] Sulindac sulfide selectively increases sensitivity of ABCC1 expressing tumor cells to doxorubicin and glutathione depletion. J Biomed Res. 2016 Mar;30(2):120-133.
• [7] Mammalian drug efflux transporters of the ATP binding cassette (ABC) family in multidrug resistance: A review of the past decade. Cancer Lett. 2016 Jan 1;370(1):153-64.
• [8] Epirubicin glucuronidation and UGT2B7 developmental expression. Drug Metab Dispos. 2006 Dec;34(12):2097-101.
• [9] Co-encapsulation of chrysophsin-1 and epirubicin in PEGylated liposomes circumvents multidrug resistance in HeLa cells. Chem Biol Interact. 2015 Dec 5;242:13-23. doi: 10.1016/j.cbi.2015.08.023. Epub 2015 Sep 1.
• [10] Camptothecin resistance: role of the ATP-binding cassette (ABC), mitoxantrone-resistance half-transporter (MXR), and potential for glucuronidation in MXR-expressing cells. Cancer Res. 1999 Dec 1;59(23):5938-46.
• [11] Preliminary study on behaviour of atrial natriuretic factor in anthracycline-related cardiac toxicity. Int J Clin Pharmacol Res. 1991;11(2):75-81.
• [12] 7,3',4'-Trihydroxyisoflavone modulates multidrug resistance transporters and induces apoptosis via production of reactive oxygen species. Toxicology. 2012 Dec 16;302(2-3):221-32. doi: 10.1016/j.tox.2012.08.003. Epub 2012 Aug 15.
• [13] Early epirubicin-induced myocardial dysfunction revealed by serial tissue Doppler echocardiography: correlation with inflammatory and oxidative stress markers. Oncologist. 2007 Sep;12(9):1124-33. doi: 10.1634/theoncologist.12-9-1124.
• [14] Persistence, up to 18 months of follow-up, of epirubicin-induced myocardial dysfunction detected early by serial tissue Doppler echocardiography: correlation with inflammatory and oxidative stress markers. Oncologist. 2008 Dec;13(12):1296-305. doi: 10.1634/theoncologist.2008-0151. Epub 2008 Dec 5.
• [15] Evidence for direct involvement of epirubicin in the formation of chromosomal translocations in t(15;17) therapy-related acute promyelocytic leukemia. Blood. 2010 Jan 14;115(2):326-30. doi: 10.1182/blood-2009-07-235051. Epub 2009 Nov 2.
• [16] (-)-Gossypol enhances the anticancer activity of epirubicin via downregulating survivin in hepatocellular carcinoma. Chem Biol Interact. 2022 Sep 1;364:110060. doi: 10.1016/j.cbi.2022.110060. Epub 2022 Jul 22.
• [17] The differential effects of cyclophosphamide, epirubicin and 5-fluorouracil on apoptotic marker (CPP-32), pro-apoptotic protein (p21(WAF-1)) and anti-apoptotic protein (bcl-2) in breast cancer cells. Breast Cancer Res Treat. 2003 Aug;80(3):239-44. doi: 10.1023/A:1024995202135.
• [18] Genome-wide association study of chemotherapeutic agent-induced severe neutropenia/leucopenia for patients in Biobank Japan. Cancer Sci. 2013 Aug;104(8):1074-82. doi: 10.1111/cas.12186. Epub 2013 Jun 10.
• [19] MARVELD1 attenuates arsenic trioxide-induced apoptosis in liver cancer cells by inhibiting reactive oxygen species production. Ann Transl Med. 2019 May;7(9):200. doi: 10.21037/atm.2019.04.38.
• [20] Genome-wide association study of epirubicin-induced leukopenia in Japanese patients. Pharmacogenet Genomics. 2011 Sep;21(9):552-8. doi: 10.1097/FPC.0b013e328348e48f.
• [21] [Knock-down of apollon gene by antisense oligodeoxynucleotide inhibits the proliferation of Lovo cells and enhances chemo-sensitivity]. Yao Xue Xue Bao. 2011 Feb;46(2):138-45.
• [22] [Antisense oligonucleotide targeting survivin induces apoptosis of renal clear-cell carcinoma cells and enhances their sensitivity to epirubicin in vitro]. Zhonghua Zhong Liu Za Zhi. 2005 Aug;27(8):468-70.
• [23] Endogenous antioxidant enzymes and glutathione S-transferase in protection of mesothelioma cells against hydrogen peroxide and epirubicin toxicity. Br J Cancer. 1998 Apr;77(7):1097-102. doi: 10.1038/bjc.1998.182.
• [24] S100P contributes to chemosensitivity of human ovarian cancer cell line OVCAR3. Oncol Rep. 2008 Aug;20(2):325-32.
• [25] TSSC3 overexpression associates with growth inhibition, apoptosis induction and enhances chemotherapeutic effects in human osteosarcoma. Carcinogenesis. 2012 Jan;33(1):30-40. doi: 10.1093/carcin/bgr232. Epub 2011 Oct 21.
• [26] Aromatase inhibitors--theoretical concept and present experiences in the treatment of endometriosis. Zentralbl Gynakol. 2003 Jul-Aug;125(7-8):247-51.
• [27] 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.
• [28] Double-blind, randomised, multicentre endocrine trial comparing two letrozole doses, in postmenopausal breast cancer patients. Eur J Cancer. 1999 Feb;35(2):208-13.
• [29] 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.
• [30] 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.
• [31] 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.
• [32] 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.
• [33] 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.
• [34] Aromatase inhibition, testosterone, and seizures. Epilepsy Behav. 2004 Apr;5(2):260-3. doi: 10.1016/j.yebeh.2003.12.001.
• [35] 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.
• [36] 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.
• [37] 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.
• [38] 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.
• [39] 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.
• [40] 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.
• [41] Biologically active neutrophil chemokine pattern in tonsillitis.Clin Exp Immunol. 2004 Mar;135(3):511-8. doi: 10.1111/j.1365-2249.2003.02390.x.