Gene/Protein Disease Symptom Drug Enzyme Compound
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Gateways to Clinical Trials is a guide to the most recent clinical trials in current literature and congresses. The data in the following tables has been retrieved from the Clinical Studies Knowledge Area of Prous Science Integrity(R), the drug discovery and development portal, http://integrity.prous.com. This issue focuses on the following selection of drugs: Activated protein C concentrate, Ad-CD154, Adeno-Interferon gamma, alemtuzumab, APC-8024, 9-aminocamptothecin, aprepitant, l-arginine hydrochloride, aripiprazole, arsenic trioxide, asimadoline; O6-Benzylguanine, bevacizumab, Bi-20, binodenoson, biphasic insulin aspart, bivatuzumab, 186Re-bivatuzumab, BMS-181176, bosentan, botulinum toxin type B, BQ-123, bryostatin 1; Carboxy- amidotriazole, caspofungin acetate, CB-1954, CC-4047, CDP-860, cerivastatin sodium, clevidipine, CTL-102; 3,4-DAP, darbepoetin alfa, decitabine, desloratadine, DHA-paclitaxel, duloxetine hydrochloride; Efalizumab, EGF vaccine, eletriptan, eniluracil, ENMD-0997, eplerenone, eplivanserin, erlosamide, ertapenem sodium, escitalopram oxalate, esomeprazole magnesium, eszopiclone, everolimus, exatecan mesilate, exenatide, ezetimibe; Fondaparinux sodium, FR-901228, FTY-720; Gefitinib, gemtuzumab ozogamicin, gepirone hydrochloride; Hexyl insulin M2, human insulin; Imatinib mesylate, insulin detemir, insulin glargine, iodine (I131) tositumomab, ISV-205, ivabradine hydrochloride, ixabepilone; Levetiracetam, levocetirizine, linezolid, liposomal NDDP, lonafarnib, lopinavir, LY-156735; Mafosfamide cyclohexylamine salt, magnesium sulfate, maxacalcitol, meclinertant, melagatran, melatonin, MENT, mepolizumab, micafungin sodium, midostaurin, motexafin gadolinium; Nesiritide, NS-1209, NSC-601316, NSC-683864; Osanetant; Palonosetron hydrochloride, parecoxib sodium, pegaptanib sodium, peginterferon alfa-2a, peginterferon alfa-2b, pegylated OB protein, pemetrexed disodium, perillyl alcohol, picoplatin, pimecrolimus, pixantrone maleate, plevitrexed, polyglutamate paclitaxel, posurdex, pramlintide acetate, prasterone, pregabalin; Rasburicase, rimonabant hydrochloride, rostaporfin, rosuvastatin calcium; SDZ-SID-791, sibrotuzumab, sorafenib, SU-11248; Tadalafil, targinine, tegaserod maleate, telithromycin, TheraCIM, tigecycline, tiotropium bromide, tipifarnib, tirapazamine, treprostinil sodium; Valdecoxib, Valganciclovir hydrochloride, Vardenafil hydrochloride hydrate; Ximelagatran; Zofenopril calcium, Zoledronic acid monohydrate.
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PMID:Gateways to clinical trials. 1507 12

Gefitinib (Iressa) is an anticancer drug that selectively inhibits tyrosine kinases of epidermal growth factor receptor. Gefitinib might affect CYP3A4-mediated metabolism, since the drug is a substrate of human CYP3A. In this study, we evaluated the effects of gefitinib on drug metabolism catalyzed by human CYP3A4. The effects of gefitinib on the CYP3A4-mediated formation of NPC (7-ethyl-10-(4-amino-1-piperidino)carbonyloxycamptothecin) and that of APC (7-ethyl-10-[4-N-(5-aminopentanoic acid)-1-piperidino]carbonyloxycamptothecin) from irinotecan were examined with the use of human liver and small intestinal microsomes. Gefitinib inhibited the formation of NPC in liver and small intestinal microsomes. The apparent intrinsic metabolic clearance (CL(int)) in the presence of 40 microM gefitinib was equivalent to about 26% of control in liver microsomes and 45% of control in small intestinal microsomes. Gefitinib stimulated the formation of APC by CYP3A4. CL(int) in the presence of 20 microM gefitinib with human liver microsomes was about 1.9 times higher than control. In human small intestinal microsomes, APC formation was enhanced by the addition of gefitinib at concentrations 20 microM or higher. CL(int) in the presence of 40 microM gefitinib was 2.8 times higher than control. Thus, we discovered that gefitinib inhibited the formation of NPC but stimulated the formation of APC from irinotecan.
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PMID:Gefitinib (Iressa) inhibits the CYP3A4-mediated formation of 7-ethyl-10-(4-amino-1-piperidino)carbonyloxycamptothecin but activates that of 7-ethyl-10-[4-N-(5-aminopentanoic acid)-1-piperidino]carbonyloxycamptothecin from irinotecan. 1612 50

Gateways to Clinical Trials are a guide to the most recent clinical trials in current literature and congresses. The data in the following tables have been retrieved from the Clinical Trials Knowledge Area of Prous Science Integrity, the drug discovery and development portal, http://integrity. prous.com. This issue focuses on the following selection of drugs: 131I-chTNT; Abatacept, adalimumab, alemtuzumab, APC-8015, aprepitant, atazanavir sulfate, atomoxetine hydrochloride, azimilide hydrochloride; Bevacizumab, bortezomib, bosentan, buserelin; Caspofungin acetate, CC-4047, ChAGCD3, ciclesonide, clopidogrel, curcumin, Cypher; Dabigatran etexilate, dapoxetine hydrochloride, darbepoetin alfa, darusentan, denosumab, DMXB-Anabaseine, drospirenone, drospirenone/estradiol, duloxetine hydrochloride, dutasteride; Edodekin alfa, efaproxiral sodium, elaidic acid-cytarabine, erlotinib hydrochloride, ertapenem sodium, escitalopram oxalate, eszopiclone, etonogestrel/testosterone decanoate, exenatide; Fulvestrant; Gefitinib, glycine, GVS-111; Homoharringtonine; ICC-1132, imatinib mesylate, iodine (I131) tositumomab, i.v. gamma-globulin; Levetiracetam, levocetirizine, lintuzumab, liposomal nystatin, lumiracoxib, lurtotecan; Manitimus, mapatumumab, melatonin, micafungin sodium, mycophenolic acid sodium salt; Oblimersen sodium, OGX-011, olmesartan medoxomil, omalizumab, omapatrilat, oral insulin; Parathyroid hormone (human recombinant), pasireotide, peginterferon alfa-2a, peginterferon alfa-2b, peginterferon alfa-2b/ribavirin, phVEGF-A165, pimecrolimus, pitavastatin calcium, plerixafor hydrochloride, posaconazole, pramlintide acetate, prasterone, pregabalin, PT-141; Quercetin; Ranolazine, rosuvastatin calcium, rubitecan, rupatadine fumarate; Sardomozide, sunitinib malate; Tadalafil, talactoferrin alfa, tegaserod maleate, telithromycin, testosterone transdermal patch, TH-9507, tigecycline, tiotropium bromide, tipifarnib, tocilizumab, treprostinil sodium; Valdecoxib, vandetanib, vardenafil hydrochloride hydrate, voriconazole.
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PMID:Gateways to clinical trials. 1639 22