Details of the Drug Combination

General Information of Drug Combination (ID: DCLRU53)

• Drug Combination Name: Elacestrant + LY2835219
• Indication: Breast Cancer; Status: Phase 1 [1]
• Component Drugs:
  Elacestrant (DM8RLJ5): N.A.
  LY2835219 (DM93VBZ): Small molecular drug

Molecular Interaction Atlas of This Drug Combination

Indication(s) of Elacestrant

Disease Entry	ICD 11	Status	REF
Breast cancer	2C60-2C65	Approved	[2]

Elacestrant Interacts with 1 DTT Molecule(s)

DTT Name	DTT ID	UniProt ID	Mode of Action	REF
Estrogen receptor (ESR)	TTZAYWL	ESR1_HUMAN	Modulator	[5]

Indication(s) of LY2835219

Disease Entry	ICD 11	Status	REF
Breast cancer	2C60-2C65	Approved	[3]
Solid tumour/cancer	2A00-2F9Z	Phase 3	[4]

LY2835219 Interacts with 2 DTT Molecule(s)

DTT Name	DTT ID	UniProt ID	Mode of Action	REF
Cyclin-dependent kinase 4 (CDK4)	TT0PG8F	CDK4_HUMAN	Modulator	[7]
Cyclin-dependent kinase 6 (CDK6)	TTO0FDJ	CDK6_HUMAN	Modulator	[7]

LY2835219 Interacts with 3 DTP Molecule(s)

DTP Name	DTP ID	UniProt ID	Mode of Action	REF
Organic cation transporter 2 (SLC22A2)	DT9IDPW	S22A2_HUMAN	Substrate	[8]
Multidrug and toxin extrusion protein 1 (SLC47A1)	DTZGT0P	S47A1_HUMAN	Substrate	[8]
Multidrug and toxin extrusion protein 2 (SLC47A2)	DT3TX4H	S47A2_HUMAN	Substrate	[8]

LY2835219 Interacts with 1 DME Molecule(s)

DME Name	DME ID	UniProt ID	Mode of Action	REF
Cytochrome P450 3A4 (CYP3A4)	DE4LYSA	CP3A4_HUMAN	Metabolism	[9]

LY2835219 Interacts with 27 DOT Molecule(s)

DOT Name	DOT ID	UniProt ID	Mode of Action	REF
Tripeptidyl-peptidase 1 (TPP1)	OT2LQ771	TPP1_HUMAN	Increases Expression	[6]
Glutaminase kidney isoform, mitochondrial (GLS)	OTGOZG2M	GLSK_HUMAN	Increases Expression	[6]
G2/mitotic-specific cyclin-B2 (CCNB2)	OTIEXTDK	CCNB2_HUMAN	Decreases Expression	[6]
Securin (PTTG1)	OTIMYS4W	PTTG1_HUMAN	Decreases Expression	[6]
G1/S-specific cyclin-E2 (CCNE2)	OTBBUKQQ	CCNE2_HUMAN	Decreases Expression	[10]
Apolipoprotein E (APOE)	OTFOWL2H	APOE_HUMAN	Increases Expression	[6]
Fibrinogen beta chain (FGB)	OT6RKLI9	FIBB_HUMAN	Decreases Expression	[6]
Fibrinogen gamma chain (FGG)	OT5BJSEX	FIBG_HUMAN	Decreases Expression	[6]
N-myc proto-oncogene protein (MYCN)	OTWD33K1	MYCN_HUMAN	Decreases Expression	[6]
Retinoblastoma-associated protein (RB1)	OTQJUJMZ	RB_HUMAN	Decreases Expression	[10]
ATP-dependent translocase ABCB1 (ABCB1)	OTEJROBO	MDR1_HUMAN	Decreases Activity	[11]
Gamma-enolase (ENO2)	OTRODL0T	ENOG_HUMAN	Increases Expression	[6]
SPARC (SPARC)	OTPN90H0	SPRC_HUMAN	Increases Expression	[6]
Apoptosis regulator Bcl-2 (BCL2)	OT9DVHC0	BCL2_HUMAN	Affects Expression	[12]
Cyclin-A2 (CCNA2)	OTPHHYZJ	CCNA2_HUMAN	Decreases Expression	[10]
G1/S-specific cyclin-D1 (CCND1)	OT8HPTKJ	CCND1_HUMAN	Affects Expression	[12]
Cyclin-dependent kinase inhibitor 1 (CDKN1A)	OTQWHCZE	CDN1A_HUMAN	Increases Expression	[6]
Caspase-3 (CASP3)	OTIJRBE7	CASP3_HUMAN	Increases Expression	[12]
Ran-specific GTPase-activating protein (RANBP1)	OTQE226K	RANG_HUMAN	Decreases Expression	[6]
Proliferation marker protein Ki-67 (MKI67)	OTA8N1QI	KI67_HUMAN	Decreases Expression	[6]
Apoptosis regulator BAX (BAX)	OTAW0V4V	BAX_HUMAN	Affects Expression	[12]
Ephrin-B3 (EFNB3)	OT12WTXQ	EFNB3_HUMAN	Decreases Expression	[6]
Insulin growth factor-like family member 2 (IGFL2)	OT64M0K7	IGFL2_HUMAN	Increases Expression	[6]
BRCA1-associated RING domain protein 1 (BARD1)	OTTC0Z9Y	BARD1_HUMAN	Decreases Expression	[6]
Fanconi anemia group E protein (FANCE)	OTKRPBW1	FANCE_HUMAN	Decreases Expression	[6]
Broad substrate specificity ATP-binding cassette transporter ABCG2 (ABCG2)	OTW8V2V1	ABCG2_HUMAN	Decreases Activity	[11]
Transforming acidic coiled-coil-containing protein 3 (TACC3)	OTRNEZTA	TACC3_HUMAN	Decreases Expression	[6]

Test Results of This Drug Combination in Other Disease Systems

Indication	DrugCom ID	Cell Line	Status	REF
Breast Cancer	DCXY87G	N. A.	Phase 1	[13]
Breast Neoplasms	DC2AU8U	N. A.	Phase 1	[14]

References

• [1] ClinicalTrials.gov (NCT04791384) Phase Ib/II Trial of Abemaciclib and Elacestrant in Patients With Brain Metastasis Due to HR+/Her2- Breast Cancer
• [2] FDA Approved Drug Products from FDA Official Website. 2023. Application Number: 217639.
• [3] 2017 FDA drug approvals.Nat Rev Drug Discov. 2018 Feb;17(2):81-85.
• [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: 7382).
• [5] RAD1901: a novel, orally bioavailable selective estrogen receptor degrader that demonstrates antitumor activity in breast cancer xenograft models. Anticancer Drugs. 2015 Oct;26(9):948-56.
• [6] Biological specificity of CDK4/6 inhibitors: dose response relationship, in vivo signaling, and composite response signature. Oncotarget. 2017 Jul 4;8(27):43678-43691. doi: 10.18632/oncotarget.18435.
• [7] Interpreting expression profiles of cancers by genome-wide survey of breadth of expression in normal tissues. Genomics 2005 Aug;86(2):127-41.
• [8] Abemaciclib Inhibits Renal Tubular Secretion Without Changing Glomerular Filtration Rate. Clin Pharmacol Ther. 2019 May;105(5):1187-1195.
• [9] LiverTox: Clinical and Research Information on Drug-Induced Liver Injury [Internet]-Abemaciclib.
• [10] CDK4/6 Inhibition Controls Proliferation of Bladder Cancer and Transcription of RB1. J Urol. 2016 Mar;195(3):771-9. doi: 10.1016/j.juro.2015.08.082. Epub 2015 Aug 28.
• [11] Effect of abemaciclib (LY2835219) on enhancement of chemotherapeutic agents in ABCB1 and ABCG2 overexpressing cells in vitro and in vivo. Biochem Pharmacol. 2017 Jan 15;124:29-42. doi: 10.1016/j.bcp.2016.10.015. Epub 2016 Nov 2.
• [12] In vitro therapeutic effects of abemaciclib on triple-negative breast cancer cells. J Biochem Mol Toxicol. 2021 Sep;35(9):e22858. doi: 10.1002/jbt.22858. Epub 2021 Jul 26.
• [13] ClinicalTrials.gov (NCT05563220) Open-Label Umbrella Study To Evaluate Safety And Efficacy Of Elacestrant In Various Combination In Patients With Metastatic Breast Cancer
• [14] ClinicalTrials.gov (NCT05386108) Study of Abemaciclib and Elacestrant in Patients With Brain Metastasis Due to HR+/HER2- Breast Cancer