Details of the Drug Combination

General Information of Drug Combination (ID: DCLA480)

• Drug Combination Name: Lamotrigine + Eslicarbazepine acetate
• Indication: Epilepsy; Status: Phase 1 [1]
• Component Drugs:
  Lamotrigine (DM8SXYG): Small molecular drug
  Eslicarbazepine acetate (DMREUZV): N.A.

Molecular Interaction Atlas of This Drug Combination

Indication(s) of Lamotrigine

Disease Entry	ICD 11	Status	REF
Bipolar disorder	6A60	Approved	[2]
Epilepsy	8A60-8A68	Approved	[2]

Lamotrigine Interacts with 1 DTT Molecule(s)

DTT Name	DTT ID	UniProt ID	Mode of Action	REF
Voltage-gated sodium channel alpha Nav1.9 (SCN11A)	TTN9VTF	SCNBA_HUMAN	Blocker	[4]

Lamotrigine Interacts with 2 DTP Molecule(s)

DTP Name	DTP ID	UniProt ID	Mode of Action	REF
P-glycoprotein 1 (ABCB1)	DTUGYRD	MDR1_HUMAN	Substrate	[5]
Organic cation transporter 1 (SLC22A1)	DTT79CX	S22A1_HUMAN	Substrate	[6]

Lamotrigine Interacts with 3 DME Molecule(s)

DME Name	DME ID	UniProt ID	Mode of Action	REF
UDP-glucuronosyltransferase 1A1 (UGT1A1)	DEYGVN4	UD11_HUMAN	Metabolism	[7]
UDP-glucuronosyltransferase 1A3 (UGT1A3)	DEF2WXN	UD13_HUMAN	Metabolism	[8]
UDP-glucuronosyltransferase 1A4 (UGT1A4)	DELOY3P	UD14_HUMAN	Metabolism	[9]

Lamotrigine Interacts with 20 DOT Molecule(s)

DOT Name	DOT ID	UniProt ID	Mode of Action	REF
ATP-dependent translocase ABCB1 (ABCB1)	OTEJROBO	MDR1_HUMAN	Decreases Activity	[10]
Steroid 17-alpha-hydroxylase/17,20 lyase (CYP17A1)	OTZKVLVJ	CP17A_HUMAN	Decreases Activity	[11]
3 beta-hydroxysteroid dehydrogenase/Delta 5-->4-isomerase type 2 (HSD3B2)	OT02MSKN	3BHS2_HUMAN	Decreases Activity	[11]
Aromatase (CYP19A1)	OTZ6XF74	CP19A_HUMAN	Decreases Activity	[12]
Steroidogenic acute regulatory protein, mitochondrial (STAR)	OTFEZ5AI	STAR_HUMAN	Decreases Expression	[13]
POU domain, class 5, transcription factor 1 (POU5F1)	OTDHHN7O	PO5F1_HUMAN	Decreases Expression	[13]
Potassium voltage-gated channel subfamily H member 2 (KCNH2)	OTZX881H	KCNH2_HUMAN	Decreases Activity	[14]
Sodium channel protein type 2 subunit alpha (SCN2A)	OTUSYE4Z	SCN2A_HUMAN	Decreases Activity	[15]
Protein lin-28 homolog A (LIN28A)	OTJJBRCQ	LN28A_HUMAN	Decreases Expression	[13]
Cytochrome P450 2A6 (CYP2A6)	OT52TWG3	CP2A6_HUMAN	Increases Activity	[16]
Adrenocorticotropic hormone receptor (MC2R)	OT6V19Y9	ACTHR_HUMAN	Increases Response To Substance	[17]
Histamine H1 receptor (HRH1)	OT8F9FV6	HRH1_HUMAN	Increases Response To Substance	[17]
D(2) dopamine receptor (DRD2)	OTBLXKEG	DRD2_HUMAN	Increases Response To Substance	[17]
Dopamine beta-hydroxylase (DBH)	OTC6I2SP	DOPO_HUMAN	Increases Response To Substance	[17]
Glucocorticoid receptor (NR3C1)	OTCI2YDI	GCR_HUMAN	Increases Response To Substance	[17]
Cytochrome P450 2E1 (CYP2E1)	OTHQ17JG	CP2E1_HUMAN	Increases Glutathionylation	[16]
HLA class I histocompatibility antigen, B alpha chain (HLA-B)	OTNXFWY2	HLAB_HUMAN	Affects Response To Substance	[18]
Cytochrome P450 2B6 (CYP2B6)	OTOYO4S7	CP2B6_HUMAN	Increases Glutathionylation	[16]
Cytochrome P450 3A4 (CYP3A4)	OTQGYY83	CP3A4_HUMAN	Increases Glutathionylation	[16]
Cytochrome P450 2D6 (CYP2D6)	OTZJC802	CP2D6_HUMAN	Increases Glutathionylation	[16]

Eslicarbazepine acetate Interacts with 1 DTP Molecule(s)

DTP Name	DTP ID	UniProt ID	Mode of Action	REF
P-glycoprotein 1 (ABCB1)	DTUGYRD	MDR1_HUMAN	Substrate	[19]

References

• [1] ClinicalTrials.gov (NCT02283801) Open-label Drug Interaction Study Between Eslicarbazepine Acetate and Lamotrigine.
• [2] 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: 2622).
• [3] Expression of the human UGT1 locus in transgenic mice by 4-chloro-6-(2,3-xylidino)-2-pyrimidinylthioacetic acid (WY-14643) and implications on drug metabolism through peroxisome proliferator-activated receptor alpha activation. Drug Metab Dispos. 2007 Mar;35(3):419-27.
• [4] The effects of lamotrigine on the acquisition and expression of morphine-induced place preference in mice. Pak J Biol Sci. 2009 Jan 1;12(1):33-9.
• [5] Several major antiepileptic drugs are substrates for human P-glycoprotein. Neuropharmacology. 2008 Dec;55(8):1364-75.
• [6] Lamotrigine is a substrate for OCT1 in brain endothelial cells. Biochem Pharmacol. 2012 Mar 15;83(6):805-14.
• [7] Drug-drug interactions for UDP-glucuronosyltransferase substrates: a pharmacokinetic explanation for typically observed low exposure (AUCi/AUC) ratios. Drug Metab Dispos. 2004 Nov;32(11):1201-8.
• [8] Variation in glucuronidation of lamotrigine in human liver microsomes. Xenobiotica. 2009 May;39(5):355-63.
• [9] Studies on induction of lamotrigine metabolism in transgenic UGT1 mice. Xenobiotica. 2009 Nov;39(11):826-35.
• [10] Functional evaluation of polymorphisms in the human ABCB1 gene and the impact on clinical responses of antiepileptic drugs. Pharmacogenet Genomics. 2008 May;18(5):390-402. doi: 10.1097/FPC.0b013e3282f85e36.
• [11] Effects of anticonvulsants on human p450c17 (17alpha-hydroxylase/17,20 lyase) and 3beta-hydroxysteroid dehydrogenase type 2. Epilepsia. 2005 Mar;46(3):444-8.
• [12] Inhibition of human aromatase complex (CYP19) by antiepileptic drugs. Toxicol In Vitro. 2008 Feb;22(1):146-53.
• [13] Antiepileptic drugs are endocrine disruptors for the human fetal testis ex vivo. Toxicol Sci. 2023 Sep 28;195(2):169-183. doi: 10.1093/toxsci/kfad076.
• [14] Effects of the antiepileptic drugs lamotrigine, topiramate and gabapentin on hERG potassium currents. Epilepsy Res. 2005 Jan;63(1):17-25. doi: 10.1016/j.eplepsyres.2004.10.002. Epub 2004 Dec 8.
• [15] Electrophysiological and pharmacological properties of the human brain type IIA Na+ channel expressed in a stable mammalian cell line. Pflugers Arch. 2001 Jan;441(4):425-33. doi: 10.1007/s004240000448.
• [16] Bioactivation of lamotrigine in vivo in rat and in vitro in human liver microsomes, hepatocytes, and epidermal keratinocytes: characterization of thioether conjugates by liquid chromatography/mass spectrometry and high field nuclear magnetic resonance spectroscopy. Chem Res Toxicol. 2010 Jan;23(1):159-70. doi: 10.1021/tx9003243.
• [17] Genetic association study of treatment response with olanzapine/fluoxetine combination or lamotrigine in bipolar I depression. J Clin Psychiatry. 2010 May;71(5):599-605. doi: 10.4088/JCP.08m04632gre. Epub 2009 Dec 15.
• [18] Common risk allele in aromatic antiepileptic-drug induced Stevens-Johnson syndrome and toxic epidermal necrolysis in Han Chinese. Pharmacogenomics. 2010 Mar;11(3):349-56. doi: 10.2217/pgs.09.162.
• [19] In vitro transport profile of carbamazepine, oxcarbazepine, eslicarbazepine acetate, and their active metabolites by human P-glycoprotein. Epilepsia. 2011 Oct;52(10):1894-904.