ICA-105665

Identification

Generic Name
ICA-105665
DrugBank Accession Number
DB06089
Background

ICA-105665 is a novel small molecule compound for the treatment of epilepsy. It is a novel opener of the KCNQ ion channel which in preclinical studies has demonstrated a broad spectrum of activity in models of epilepsy. In addition, ICA-105665 has also demonstrated activity in certain models of neuropathic pain.

Type
Small Molecule
Groups
Investigational
Synonyms
Not Available

Pharmacology

Indication

Investigated for use/treatment in epilepsy.

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Contraindications & Blackbox Warnings
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Pharmacodynamics

Not Available

Mechanism of action

ICA-105665 is an activator of subtypes of KCNQ ion channels, which are attractive targets for the treatment of epilepsy based on their function and genetic linkage to a seizure disorder.

TargetActionsOrganism
UPotassium voltage-gated channel subfamily KQT member 1Not AvailableHumans
UPotassium voltage-gated channel subfamily KQT member 3Not AvailableHumans
UPotassium voltage-gated channel subfamily KQT member 4Not AvailableHumans
UPotassium voltage-gated channel subfamily KQT member 5Not AvailableHumans
UPotassium voltage-gated channel subfamily KQT member 2Not AvailableHumans
Absorption

Not Available

Volume of distribution

Not Available

Protein binding

Not Available

Metabolism
Not Available
Route of elimination

Not Available

Half-life

Not Available

Clearance

Not Available

Adverse Effects
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Toxicity

Not Available

Pathways
Not Available
Pharmacogenomic Effects/ADRs
Not Available

Interactions

Drug Interactions
This information should not be interpreted without the help of a healthcare provider. If you believe you are experiencing an interaction, contact a healthcare provider immediately. The absence of an interaction does not necessarily mean no interactions exist.
Not Available
Food Interactions
Not Available

Categories

Drug Categories
Not Available
Classification
Not classified
Affected organisms
Not Available

Chemical Identifiers

UNII
Not Available
CAS number
Not Available
InChI Key
Not Available
InChI
Not Available
IUPAC Name
Not Available
SMILES
Not Available

References

General References
Not Available
PubChem Substance
347910330

Clinical Trials

Clinical Trials
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PhaseStatusPurposeConditionsCountStart DateWhy Stopped100+ additional columns
2TerminatedTreatmentEpilepsy1somestatusstop reasonjust information to hide
1CompletedBasic ScienceHealthy Volunteers (HV)1somestatusstop reasonjust information to hide

Pharmacoeconomics

Manufacturers
Not Available
Packagers
Not Available
Dosage Forms
Not Available
Prices
Not Available
Patents
Not Available

Properties

State
Solid
Experimental Properties
Not Available
Predicted Properties
Not Available
Predicted ADMET Features
Not Available

Spectra

Mass Spec (NIST)
Not Available
Spectra
Not Available
Chromatographic Properties
Collision Cross Sections (CCS)
Not Available

Targets

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Kind
Protein
Organism
Humans
Pharmacological action
Unknown
General Function
Potassium channel that plays an important role in a number of tissues, including heart, inner ear, stomach and colon (PubMed:10646604, PubMed:25441029). Associates with KCNE beta subunits that modulates current kinetics (PubMed:10646604, PubMed:11101505, PubMed:19687231, PubMed:8900283, PubMed:9108097, PubMed:9312006). Induces a voltage-dependent current by rapidly activating and slowly deactivating potassium-selective outward current (PubMed:10646604, PubMed:11101505, PubMed:25441029, PubMed:8900283, PubMed:9108097, PubMed:9312006). Promotes also a delayed voltage activated potassium current showing outward rectification characteristic (By similarity). During beta-adrenergic receptor stimulation participates in cardiac repolarization by associating with KCNE1 to form the I(Ks) cardiac potassium current that increases the amplitude and slows down the activation kinetics of outward potassium current I(Ks) (By similarity) (PubMed:10646604, PubMed:11101505, PubMed:8900283, PubMed:9108097, PubMed:9312006). Muscarinic agonist oxotremorine-M strongly suppresses KCNQ1/KCNE1 current (PubMed:10713961). When associated with KCNE3, forms the potassium channel that is important for cyclic AMP-stimulated intestinal secretion of chloride ions (PubMed:10646604). This interaction with KCNE3 is reduced by 17beta-estradiol, resulting in the reduction of currents (By similarity). During conditions of increased substrate load, maintains the driving force for proximal tubular and intestinal sodium ions absorption, gastric acid secretion, and cAMP-induced jejunal chloride ions secretion (By similarity). Allows the provision of potassium ions to the luminal membrane of the secretory canaliculus in the resting state as well as during stimulated acid secretion (By similarity). When associated with KCNE2, forms a heterooligomer complex leading to currents with an apparently instantaneous activation, a rapid deactivation process and a linear current-voltage relationship and decreases the amplitude of the outward current (PubMed:11101505). When associated with KCNE4, inhibits voltage-gated potassium channel activity (PubMed:19687231). When associated with KCNE5, this complex only conducts current upon strong and continued depolarization (PubMed:12324418). Also forms a heterotetramer with KCNQ5; has a voltage-gated potassium channel activity (PubMed:24855057). Binds with phosphatidylinositol 4,5-bisphosphate (PubMed:25037568). KCNQ1-KCNE2 channel associates with Na(+)-coupled myo-inositol symporter in the apical membrane of choroid plexus epithelium and regulates the myo-inositol gradient between blood and cerebrospinal fluid with an impact on neuron excitability
Specific Function
Calmodulin binding
Gene Name
KCNQ1
Uniprot ID
P51787
Uniprot Name
Potassium voltage-gated channel subfamily KQT member 1
Molecular Weight
74697.925 Da
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
General Function
Associates with KCNQ2 or KCNQ5 to form a potassium channel with essentially identical properties to the channel underlying the native M-current, a slowly activating and deactivating potassium conductance which plays a critical role in determining the subthreshold electrical excitability of neurons as well as the responsiveness to synaptic inputs. Therefore, it is important in the regulation of neuronal excitability. KCNQ2-KCNQ3 channel is selectively permeable to other cations besides potassium, in decreasing order of affinity K(+) > Rb(+) > Cs(+) > Na(+). Associates with Na(+)-coupled myo-inositol symporter SLC5A3 forming a coregulatory complex that alters ion selectivity, increasing Na(+) and Cs(+) permeation relative to K(+) permeation (PubMed:28793216)
Specific Function
Calmodulin binding
Gene Name
KCNQ3
Uniprot ID
O43525
Uniprot Name
Potassium voltage-gated channel subfamily KQT member 3
Molecular Weight
96741.515 Da
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
General Function
Probably important in the regulation of neuronal excitability. May underlie a potassium current involved in regulating the excitability of sensory cells of the cochlea. KCNQ4 channels are blocked by linopirdin, XE991 and bepridil, whereas clofilium is without significant effect. Muscarinic agonist oxotremorine-M strongly suppress KCNQ4 current in CHO cells in which cloned KCNQ4 channels were coexpressed with M1 muscarinic receptors
Specific Function
Potassium channel activity
Gene Name
KCNQ4
Uniprot ID
P56696
Uniprot Name
Potassium voltage-gated channel subfamily KQT member 4
Molecular Weight
77099.99 Da
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
General Function
Associates with KCNQ3 to form a potassium channel which contributes to M-type current, a slowly activating and deactivating potassium conductance which plays a critical role in determining the subthreshold electrical excitability of neurons. Therefore, it is important in the regulation of neuronal excitability. May contribute, with other potassium channels, to the molecular diversity of a heterogeneous population of M-channels, varying in kinetic and pharmacological properties, which underlie this physiologically important current. Insensitive to tetraethylammonium, but inhibited by barium, linopirdine and XE991. Activated by niflumic acid and the anticonvulsant retigabine. As the native M-channel, the potassium channel composed of KCNQ3 and KCNQ5 is also suppressed by activation of the muscarinic acetylcholine receptor CHRM1
Specific Function
Voltage-gated potassium channel activity
Gene Name
KCNQ5
Uniprot ID
Q9NR82
Uniprot Name
Potassium voltage-gated channel subfamily KQT member 5
Molecular Weight
102178.015 Da
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
General Function
Associates with KCNQ3 to form a potassium channel with essentially identical properties to the channel underlying the native M-current, a slowly activating and deactivating potassium conductance which plays a critical role in determining the subthreshold electrical excitability of neurons as well as the responsiveness to synaptic inputs. Therefore, it is important in the regulation of neuronal excitability. KCNQ2/KCNQ3 current is blocked by linopirdine and XE991, and activated by the anticonvulsant retigabine (PubMed:11572947, PubMed:12742592, PubMed:14534157, PubMed:17872363, PubMed:9836639). As the native M-channel, the potassium channel composed of KCNQ2 and KCNQ3 is also suppressed by activation of the muscarinic acetylcholine receptor CHRM1 (PubMed:10684873). KCNQ2-KCNQ3 channel is selectively permeable to other cations besides potassium, in decreasing order of affinity K(+) > Rb(+) > Cs(+) > Na(+). Associates with Na(+)-coupled myo-inositol symporter SLC5A3 forming a coregulatory complex that alters ion selectivity, increasing Na(+) and Cs(+) permeation relative to K(+) permeation
Specific Function
Ankyrin binding
Gene Name
KCNQ2
Uniprot ID
O43526
Uniprot Name
Potassium voltage-gated channel subfamily KQT member 2
Molecular Weight
95846.575 Da

Drug created at November 18, 2007 18:29 / Updated at June 12, 2020 16:52