U.S. Department of Health & Human Services Divider Arrow National Institutes of Health Divider Arrow NCATS

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Showing 21 - 30 of 4326 results

Nirogacestat (PF-3084014) is a tetralin imidazole gamma-secretase inhibitor. Gamma-secretase, a proteolytic enzyme complex, mediates processing of several integral membrane proteins including amyloid precursor protein and Notch. This compound can inhibit both Notch-related pathway in neoplasia and reduces amyloid-β production. Nirogacestat (PF-3084014) is under development by Pfizer for the treatment of cancer.
AZD-5363, a novel pyrrolopyrimidine-derived compound, inhibits all AKT isoforms with a potency of <10nM, and inhibited phosphorylation of AKT substrates in cells with a potency of ~0.3 to 0.8µM. AZD5363 monotherapy inhibited the proliferation of 41/182 solid and hematologic tumour cell lines with a potency of <3µM and 25/182 with a potency of <1µM. By targeting AKT, the key node in the PIK3/AKT signaling network, AZD-5363 may be used as monotherapy or combination therapy for a variety of human cancers. There is significant relationship between the presence of PIK3CA and/or PTEN mutations and sensitivity to AZD-5363, and between RAS mutations and resistance. In xenograft studies in vivo AZD-5363 significantly reduced phosphorylation of PRAS40, GSK3β and S6. Chronic oral dosing of AZD-5363 causes dose-dependent inhibition of the growth of xenografts derived from various tumor types and AZD-5363 also significantly enhanced the antitumor activity of docetaxel, lapatinib and trastuzumab in breast cancer xenografts. Dose-response at oral doses of 50 to 150mg/kg twice daily continuous dosing and intermittent dosing in the range of 100 to 200mg/kg twice daily, 4 days on, 3 days off have led to efficacy. AZD-5363 is in phase II clinical studies for the treatment of breast cancer; gastric cancer; non-small cell lung cancer.

Class (Stereo):
CHEMICAL (ABSOLUTE)


Fezolinetant (ESN-364) is an antagonist of the neurokinin-3 receptor. It suppresses the hypothalamic-pituitary-gonadal axis. Ogeda is developing fezolinetant for the treatment of hot flashes (vasomotor symptoms) in postmenopausal women.

Class (Stereo):
CHEMICAL (ABSOLUTE)


VBP-15 FREE ALCOHOL, also known as Vamorolone and VBP-15, is an anti-inflammatory compound used in the treatment of muscular dystrophy. Vamorolone is a dissociative steroid that retains high affinity binding and nuclear translocation of both glucocorticoid (agonist) and mineralocorticoid (antagonist) receptors, but does not show pharmacodynamic safety concerns of existing glucocorticoid drugs at up to 20 mg/kg/day. Vamorolone is a first-in-class steroidal multi-functional drug that shows potent inhibition of pro-inflammatory NFkB pathways via high-affinity binding to the glucocorticoid receptor, high affinity antagonism for the mineralocorticoid receptor, and membrane stabilization properties. Pre-clinical data in multiple mouse models of inflammation showed retention of anti-inflammatory efficacy, but loss of most or all side effects. Vamorolone has received Orphan Drug Designation in the US and Europe and is being developed for chronic treatment of boys with Duchenne Muscular Dystrophy (DMD).
Sotagliflozin (LX4211) is an orally-delivered small molecule compound that is currently in development for the treatment of type 1 and type 2 diabetes mellitus. Sotagliflozin (LX4211) inhibits both sodium-glucose cotransporter type 2, or SGLT2, a transporter responsible for most of the glucose reabsorption performed by the kidney, and sodium-glucose cotransporter type 1, or SGLT1, a transporter responsible for glucose and galactose absorption in the gastrointestinal tract, and to a lesser extent than SGLT2, glucose reabsorption in the kidney. Combining SGLT1 and SGLT2 inhibition in a single molecule would provide complementary insulin-independent mechanisms to treat diabetes.
Quizartinib (AC220) is an orally bioavailable, small molecule receptor tyrosine kinase inhibitor that is being developed by Daiichi Sankyo Company (previously Ambit Biosciences) and Astellas Pharma as a treatment for acute myeloid leukaemia (AML), acute lymphoblastic leukaemia (ALL) and advanced solid tumours. The highest affinity target identified for Quizartinib was FLT3. The only other kinases with binding constants within 10-fold that for FLT3 were the closely related receptor tyrosine kinases KIT, PDGFRA, PDGFRB, RET, and CSF1R. Kinase inhibition of (mutant) KIT, PDGFR and FLT3 isoforms by quizartinib leads to potent inhibition of cellular proliferation and induction of apoptosis in in vitro leukemia models as well as in native leukemia blasts treated ex vivo.
Palovarotene (R-667, RO-3300074) was developed by Roche Holding AG as a selective retinoic acid receptor gamma agonist for the treatment of emphysema. Phase I clinical trials of palovarotene in patients with emphysema demonstrated that the drug is well tolerated, with improvements observed in markers of emphysema progression. Unlike all-trans retinoic acid, the pharmacokinetic profile of palovarotene appears to be dose-proportional. However, those studies were discontinued. Palovarotene is also being investigated in phase II of the clinical trial in the treatment of Fibrodysplasia Ossificans Progressiva (FOP). Palovarotene received Fast Track designation from the U.S. Food and Drug Administration (FDA) and orphan designations for the treatment of FOP from both the FDA and the European Medicines Agency (EMA).
Gepirone (brand name Travivo) is an investigational azapirone antidepressant and anxiolytic drug in development for the treatment of major depressive disorder but has yet to be marketed. Like other azapirones, it acts as a selective partial agonist of the 5-HT1A receptor. Gepirone has been under development in the U.S. in an extended release form (referred to as Gepirone ER). It has been rejected multiple times by the FDA during the drug approval process and Phase III studies evaluating its use in the treatment of MDD were prematurely terminated. These were the initial Phase III studies of gepirone ER in MDD, and the effective dose range had not been determined. In March 2016, the FDA reversed its decision and gave gepirone ER a positive review, clearing the way for the drug to finally gain market approval in the U.S. In addition to its antidepressant and anxiolytic properties, gepirone has been found to improve symptoms of sexual dysfunction in men and women, similarly to the marketed 5-HT1A receptor agonist flibanserin. The pro-sexual effects appear to be independent of its antidepressant and anxiolytic effects. Mechanism of action studies have demonstrated that gepirone possesses a much greater selectivity for 5-HT1A receptors over dopamine D2 receptors. Long-term studies have shown that gepirone has a differential action at presynaptic (agonist) and post-synaptic (partial agonist) 5-HT1A receptors. Treatment with gepirone ER desensitizes presynaptic 5-HT1A receptors, which decreases serotonin autoregulatory inhibition and enhances activation of postsynaptic 5-HT1A receptors. As a partial agonist gepirone ER acts as an agonist when endogenous serotonin is not present and as an antagonist when endogenous serotonin is present. Overall, gepirone ER increases serotonin production when insufficient amounts are present, and decreases serotonin production when excess amounts are present. Gepirone has been tested in Phase II clinical trial as antidepressant medication for pharmacotherapy for cocaine dependent subjects.