Details of the Drug Combination

General Information of Drug Combination (ID: DCTTCWH)

• Drug Combination Name: Vismodegib + Letrozole
• Indication: High grade ovarian serous adenocarcinoma; Status: Investigative [1]
• Component Drugs:
  Vismodegib (DM5IXKQ): Small molecular drug
  Letrozole (DMH07Y3): Small molecular drug
• High-throughput Screening Result:
  Testing Cell Line: OVCAR-4
  Zero Interaction Potency (ZIP) Score: 4.16
  Bliss Independence Score: 1.48
  Loewe Additivity Score: 0.45
  LHighest Single Agent (HSA) Score: 0.5

Molecular Interaction Atlas of This Drug Combination

Indication(s) of Vismodegib

Disease Entry	ICD 11	Status	REF
Basal cell carcinoma	2C32	Approved	[2]
Primitive neuroectodermal tumour medulloblastoma	2A00.11	Phase 2	[3]

Vismodegib Interacts with 1 DTT Molecule(s)

DTT Name	DTT ID	UniProt ID	Mode of Action	REF
Smoothened homolog (SMO)	TT8J1S3	SMO_HUMAN	Modulator	[6]

Vismodegib Interacts with 2 DME Molecule(s)

DME Name	DME ID	UniProt ID	Mode of Action	REF
Cytochrome P450 3A4 (CYP3A4)	DE4LYSA	CP3A4_HUMAN	Metabolism	[7]
Cytochrome P450 2C9 (CYP2C9)	DE5IED8	CP2C9_HUMAN	Metabolism	[7]

Vismodegib Interacts with 13 DOT Molecule(s)

DOT Name	DOT ID	UniProt ID	Mode of Action	REF
Tumor necrosis factor receptor superfamily member 10A (TNFRSF10A)	OTBPCU2O	TR10A_HUMAN	Increases Expression	[8]
Tumor necrosis factor receptor superfamily member 10B (TNFRSF10B)	OTA1CPBV	TR10B_HUMAN	Increases Expression	[8]
Zinc finger protein GLI1 (GLI1)	OT1BTAJO	GLI1_HUMAN	Decreases Expression	[8]
Zinc finger protein GLI2 (GLI2)	OTIRV97L	GLI2_HUMAN	Decreases Expression	[8]
Apoptosis regulator Bcl-2 (BCL2)	OT9DVHC0	BCL2_HUMAN	Decreases Expression	[8]
Platelet-derived growth factor receptor alpha (PDGFRA)	OTDJXUCN	PGFRA_HUMAN	Decreases Expression	[8]
Tumor necrosis factor receptor superfamily member 6 (FAS)	OTP9XG86	TNR6_HUMAN	Increases Expression	[8]
Caspase-3 (CASP3)	OTIJRBE7	CASP3_HUMAN	Increases Cleavage	[8]
Protein patched homolog 1 (PTCH1)	OTMG07H5	PTC1_HUMAN	Decreases Expression	[8]
Protein smoothened (SMO)	OTXXE208	SMO_HUMAN	Decreases Expression	[8]
Protein patched homolog 2 (PTCH2)	OTOQ0K9V	PTC2_HUMAN	Decreases Expression	[8]
Suppressor of fused homolog (SUFU)	OT0IRYG1	SUFU_HUMAN	Decreases Response To Substance	[9]
N-myc proto-oncogene protein (MYCN)	OTWD33K1	MYCN_HUMAN	Decreases Response To Substance	[9]

Indication(s) of Letrozole

Disease Entry	ICD 11	Status	REF
Estrogen-receptor positive breast cancer	N.A.	Approved	[4]
Hormonally-responsive breast cancer	2C60-2C65	Approved	[5]

Letrozole Interacts with 1 DTT Molecule(s)

DTT Name	DTT ID	UniProt ID	Mode of Action	REF
Aromatase (CYP19A1)	TTSZLWK	CP19A_HUMAN	Inhibitor	[10]

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	[11]
Aromatase (CYP19A1)	DEQX145	CP19A_HUMAN	Metabolism	[12]
Cytochrome P450 2A6 (CYP2A6)	DEJVYAZ	CP2A6_HUMAN	Metabolism	[13]

Letrozole Interacts with 18 DOT Molecule(s)

DOT Name	DOT ID	UniProt ID	Mode of Action	REF
Aromatase (CYP19A1)	OTZ6XF74	CP19A_HUMAN	Decreases Activity	[14]
Cytochrome P450 3A4 (CYP3A4)	OTQGYY83	CP3A4_HUMAN	Increases Oxidation	[15]
Cytochrome P450 2A6 (CYP2A6)	OT52TWG3	CP2A6_HUMAN	Increases Oxidation	[15]
Adenylate kinase isoenzyme 1 (AK1)	OT614AR3	KAD1_HUMAN	Increases ADR	[16]
Dickkopf-related protein 1 (DKK1)	OTRDLUSP	DKK1_HUMAN	Increases Expression	[17]
Follitropin subunit beta (FSHB)	OTGLS283	FSHB_HUMAN	Increases Expression	[18]
Lutropin subunit beta (LHB)	OT5GBOVJ	LSHB_HUMAN	Increases Expression	[18]
Progesterone receptor (PGR)	OT0FZ3QE	PRGR_HUMAN	Decreases Expression	[19]
Leukemia inhibitory factor (LIF)	OTO46S5S	LIF_HUMAN	Increases Expression	[17]
Gap junction alpha-1 protein (GJA1)	OTT94MKL	CXA1_HUMAN	Decreases Expression	[20]
G1/S-specific cyclin-D1 (CCND1)	OT8HPTKJ	CCND1_HUMAN	Decreases Expression	[21]
G1/S-specific cyclin-D2 (CCND2)	OTDULQF9	CCND2_HUMAN	Decreases Expression	[21]
Cyclin-dependent kinase inhibitor 1 (CDKN1A)	OTQWHCZE	CDN1A_HUMAN	Increases Expression	[22]
Leukemia inhibitory factor receptor (LIFR)	OT36W9O5	LIFR_HUMAN	Increases Expression	[17]
Proliferation marker protein Ki-67 (MKI67)	OTA8N1QI	KI67_HUMAN	Decreases Expression	[19]
Small ribosomal subunit protein eS6 (RPS6)	OTT4D1LN	RS6_HUMAN	Decreases Phosphorylation	[21]
Lanosterol 14-alpha demethylase (CYP51A1)	OTAYHG9C	CP51A_HUMAN	Decreases Activity	[23]
Fibroblast growth factor 22 (FGF22)	OTVIX6J0	FGF22_HUMAN	Increases Expression	[17]

Test Results of This Drug Combination in Other Disease Systems

Indication	DrugCom ID	Cell Line	Status	REF
Carcinoma	DCBRM4Z	MCF7	Investigative	[24]
Invasive ductal carcinoma	DCDJ3U4	BT-549	Investigative	[24]
Invasive ductal carcinoma	DCNDIJ8	HS 578T	Investigative	[24]
Adenocarcinoma	DCW4KXY	NCIH23	Investigative	[1]
Adenocarcinoma	DCPR1JI	SW-620	Investigative	[1]
Adenocarcinoma	DCBNUML	HT29	Investigative	[1]
Adult acute myeloid leukemia	DCCNPM5	HL-60(TB)	Investigative	[1]
Adult T acute lymphoblastic leukemia	DCQKII7	MOLT-4	Investigative	[1]
Amelanotic melanoma	DCB1BTO	M14	Investigative	[1]
Amelanotic melanoma	DCJSSM6	MDA-MB-435	Investigative	[1]
Astrocytoma	DCAWV0D	SNB-19	Investigative	[1]
Clear cell renal cell carcinoma	DCOQI9I	TK-10	Investigative	[1]
Cutaneous melanoma	DCOCUPH	SK-MEL-28	Investigative	[1]
Cutaneous melanoma	DCTCPTX	SK-MEL-5	Investigative	[1]
Glioma	DC5PXRA	SF-268	Investigative	[1]
High grade ovarian serous adenocarcinoma	DC9H3HA	OVCAR-8	Investigative	[1]
Malignant melanoma	DC7HWT4	LOX IMVI	Investigative	[1]
Melanoma	DCLIOJX	UACC-257	Investigative	[1]
Melanoma	DC95AU0	MALME-3M	Investigative	[1]
Minimally invasive lung adenocarcinoma	DC62KIR	NCI-H322M	Investigative	[1]
Plasma cell myeloma	DC9JE2Y	RPMI-8226	Investigative	[1]
Pleural epithelioid mesothelioma	DC4V1OJ	NCI-H226	Investigative	[1]
Renal cell carcinoma	DCGZNA5	SN12C	Investigative	[1]

References

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• [3] A phase II, multicenter, open-label, 3-cohort trial evaluating the efficacy and safety of vismodegib in operable basal cell carcinoma. J Am Acad Dermatol. 2015 Jul;73(1):99-105.e1.
• [4] Letrozole FDA Label
• [5] 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).
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• [10] Aromatase inhibitors--theoretical concept and present experiences in the treatment of endometriosis. Zentralbl Gynakol. 2003 Jul-Aug;125(7-8):247-51.
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• [12] Double-blind, randomised, multicentre endocrine trial comparing two letrozole doses, in postmenopausal breast cancer patients. Eur J Cancer. 1999 Feb;35(2):208-13.
• [13] 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.
• [14] 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.
• [15] 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.
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• [17] 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.
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• [22] 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.
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