eflornithine 🐶 Veterinary Use | Indications/Contra | FAERs-F | FAERs-M | Orange Bk | PK/Tox | Related Drugs | BioActivity |

Stem definitionDrug idCAS RN
990 70052-12-9

Description:

MoleculeDescription

Molfile Inchi Smiles

Synonyms:

  • eflornithine hydrochloride monohydrate
  • eflornithine hydrochloride anhydrous
  • vaniqa
  • eflornithine hydrochloride
  • eflornithine
  • elfornithine
  • ornidyl
  • alpha-(Difluoromethyl)-DL-ornithine
  • eflornithine hydrochloride hydrate
  • eflornithine HCl
Eflornithine is an irreversible inhibitor of the enzyme ornithine decarboxylase (ODC), the first and rate-limiting enzyme in the biosynthesis of polyamines and a transcriptional target of MYCN. Polyamines are involved in differentiation and proliferation of mammalian cells and are important for neoplastic transformation. Inhibition of polyamine synthesis by eflornithine restored the balance of the LIN28/Let-7 metabolic pathway, which is involved in regulation of cancer stem cells and glycolytic metabolism, by decreasing expression of the oncogenic drivers MYCN and LIN28B in MYCN-amplified neuroblastoma. In vitro, eflornithine induced senescence and suppressed neurosphere formation in MYCN-amplified and MYCN non-amplified neuroblastoma cells, indicating a cytostatic effect. Treatment with eflornithine prevented or delayed tumor formation in mice injected with limiting dilutions of MYCN-amplified neuroblastoma cells.
  • Molecular weight: 182.17
  • Formula: C6H12F2N2O2
  • CLOGP: -1.84
  • LIPINSKI: 0
  • HAC: 4
  • HDO: 3
  • TPSA: 89.34
  • ALOGS: -0.56
  • ROTB: 5

  • Status: OFP

  • Legend:
    OFP - off patent
    OFM - off market
    ONP - on patent

Drug dosage:

None

ADMET properties:

PropertyValueReference
BA (Bioavailability) 55 % Kim MT, Sedykh A, Chakravarti SK, Saiakhov RD, Zhu H

Predicted pharmacokinetic/toxicological properties (PK-AZ):

PropertyDescriptionValueUnitConfidenceSimilarity
kinase-safety-class ACVR2B,AXL,BRAF,BTK,CAMK2D,CDK4,CDK5,EIF2AK3,ERBB2,GRK2,ITK,JAK3,MAP2K6,MAPK10,MAPK7,NTRK1,NTRK2,PDK2,PDK4,PRKDC,SYK,TEK,TGFBR1,ZAP70 24
kinase-selectivity-class AXL,EIF2AK3,MAP2K6 3
pfas-class PFAS structural alert (1 = True, 0 = False) 1

Approvals:

DateAgencyCompanyOrphan
Nov. 28, 1990 FDA

FDA Adverse Event Reporting System (Female)

None

FDA Adverse Event Reporting System (Male)

None

FDA Adverse Event Reporting System (Geriatric)

None

FDA Adverse Event Reporting System (Pediatric)

None

Pharmacologic Action:

SourceCodeDescription
ATC D11AX16 DERMATOLOGICALS
OTHER DERMATOLOGICAL PREPARATIONS
OTHER DERMATOLOGICAL PREPARATIONS
Other dermatologicals
ATC L01XX79 ANTINEOPLASTIC AND IMMUNOMODULATING AGENTS
ANTINEOPLASTIC AGENTS
OTHER ANTINEOPLASTIC AGENTS
Other antineoplastic agents
ATC P01CX03 ANTIPARASITIC PRODUCTS, INSECTICIDES AND REPELLENTS
ANTIPROTOZOALS
AGENTS AGAINST LEISHMANIASIS AND TRYPANOSOMIASIS
Other agents against leishmaniasis and trypanosomiasis
FDA EPC N0000175485 Antiprotozoal
MeSH PA D000890 Anti-Infective Agents
MeSH PA D000970 Antineoplastic Agents
MeSH PA D000977 Antiparasitic Agents
MeSH PA D000981 Antiprotozoal Agents
MeSH PA D004791 Enzyme Inhibitors
MeSH PA D014344 Trypanocidal Agents
MeSH PA D065108 Ornithine Decarboxylase Inhibitors
FDA MoA N0000175844 Decarboxylase Inhibitors
FDA EPC N0000175845 Decarboxylase Inhibitor
CHEBI has role CHEBI:35526 hypoglycemic agent
CHEBI has role CHEBI:35610 antineoplastic agent
CHEBI has role CHEBI:36335 trypanocidal drug
CHEBI has role CHEBI:70868 antileishmanial agent

Related Drugs by ATC class:

D11AX Other dermatologicals 20 drugs
L01XX Other antineoplastic agents 33 drugs
P01CX Other agents against leishmaniasis and trypanosomiasis 3 drugs

Drug Use | Suggest Off label Use Form| |View source of the data|

DiseaseRelationSNOMED_IDDOID
African trypanosomiasis indication 27031003 DOID:10112
Female Facial Hirsutism indication
Reduce the risk of relapse for high-risk neuroblastoma (HRNB) indication
Eruption of skin contraindication 271807003 DOID:0050486
Skin irritation contraindication 367466007




🐶 Veterinary Drug Use

None

🐶 Veterinary products

None

Acid dissociation constants calculated using MoKa v3.0.0

Dissociation levelDissociation constantType (acidic/basic)
pKa1 1.31 acidic
pKa2 10.94 Basic
pKa3 5.21 Basic

Orange Book patent data (new drug applications)

Formulation strengthTrade nameApplicantApplication numberApproval dateTypeDose formRoutePatent numberPatent expiration datePatent use
EQ 192MG BASE IWILFIN USWM N215500 Dec. 13, 2023 RX TABLET ORAL 12582625 Feb. 12, 2036 TREATMENT TO REDUCE THE RISK OF RELAPSE IN ADULT AND PEDIATRIC PATIENTS WITH HIGH-RISK NEUROBLASTOMA (HRNB) WHO HAVE DEMONSTRATED AT LEAST A PARTIAL RESPONSE TO PRIOR MULTIAGENT, MULTIMODALITY THERAPY INCLUDING ANTI-GD2 IMMUNOTHERAPY

Orange Book exclusivity data (new drug applications)

Formulation strengthTrade nameApplicantApplication numberApproval dateTypeDose formRouteExclusivity dateDescription
EQ 192MG BASE IWILFIN USWM N215500 Dec. 13, 2023 RX TABLET ORAL Dec. 13, 2026 NEW PRODUCT
EQ 192MG BASE IWILFIN USWM N215500 Dec. 13, 2023 RX TABLET ORAL Dec. 13, 2030 TO REDUCE THE RISK OF RELAPSE IN ADULT AND PEDIATRIC PATIENTS WITH HIGH-RISK NEUROBLASTOMA (HRNB) WHO HAVE DEMONSTRATED AT LEAST A PARTIAL RESPONSE TO PRIOR MULTIAGENT, MULTIMODALITY THERAPY INCLUDING ANTI-GD2 IMMUNOTHERAPY

Bioactivity Summary:

TargetClassPharosUniProtActionTypeActivity value
(-log[M])
Mechanism
action
Bioact sourceMoA source
Ornithine decarboxylase Enzyme INHIBITOR Kd 4.89 IUPHAR CHEMBL
Ornithine decarboxylase Enzyme INHIBITOR DRUG LABEL SCIENTIFIC LITERATURE
Ornithine decarboxylase Enzyme Ki 4.41 CHEMBL

External reference:

IDSource
D00829 KEGG_DRUG
68278-23-9 SECONDARY_CAS_RN
96020-91-6 SECONDARY_CAS_RN
4020660 VANDF
4023581 VANDF
C0002260 UMLSCUI
CHEBI:41948 CHEBI
CHEMBL830 ChEMBL_ID
DB06243 DRUGBANK_ID
CHEMBL1201037 ChEMBL_ID
D000518 MESH_DESCRIPTOR_UI
3009 PUBCHEM_CID
5551 INN_ID
5176 IUPHAR_LIGAND_ID
ZQN1G5V6SR UNII
284913 RXNORM
15655 MMSL
35968 MMSL
37870 MMSL
d10151 MMSL
005117 NDDF
005118 NDDF
019746 NDDF
108715006 SNOMEDCT_US
108716007 SNOMEDCT_US
1269007006 SNOMEDCT_US
372533004 SNOMEDCT_US
783271002 SNOMEDCT_US
DMO PDB_CHEM_ID
ZQN1G5V6SR INXIGHT DRUGS

Pharmaceutical products:

ProductCategoryIngredientsNDCFormQuantityRouteMarketingLabel
VANIQA HUMAN PRESCRIPTION DRUG LABEL 1 54868-5124 CREAM 139 mg TOPICAL NDA 19 sections
iwilfin HUMAN PRESCRIPTION DRUG LABEL 1 78670-150 TABLET 250 mg ORAL NDA 27 sections
Florexa HUMAN PRESCRIPTION DRUG LABEL 1 82160-125 CREAM 4170 mg TOPICAL unapproved drug other 16 sections