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

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Tapinarof (also known as benvitimod, WB-1001; GSK-2894512), an investigational therapeutic aryl hydrocarbon receptor modulating agent that selectively modulates the cytokine cascade deep under the skin, a process that rapidly decreases inflammations and skin plague. Tapinarof participated in clinical trials for the treatment of psoriasis and atopic dermatitis. Phase III clinical trials to evaluate the efficacy and safety of the cream for the topical treatment of plaque psoriasis (psoriasis) was terminated because of the business decision based on the need to prioritize and focus resources within GSK. In July 2018, Roivant subsidiary Dermavant Sciences purchased the rights for tapinarof. Besides, tapinarof participated in phase II clinical trials for patients with atopic dermatitis.

Class (Stereo):
CHEMICAL (ACHIRAL)


GBT440 (previously GTx011) is a potent and direct drug for sickle cell treatment. In sickle cell anemia, abnormal hemoglobin molecules are formed, which causes problems for the flow of blood and oxygen through the body. GBT440 can selectively bind to hemoglobin, thereby increasing its affinity for oxygen. By inhibiting hemoglobin polymerization, it also prevents deformation of the red blood cells. GBT440, renamed Voxelotor, is thought to help prevent sickle cells blocking blood vessels, and therefore reduces pain (sickle cell crisis) experienced by patients. GBT440 is well absorbed following intravenous and oral administration, and quickly partitions into the red blood cell with a small part re‐distributed into the plasma. GBT440 was well tolerated in a randomized, placebo‐controlled, double blind, parallel group phase I/II study in healthy volunteers and sickle cell disease patients. Headache is the most reported adverse event related to the use of this drug, and no serious adverse events are known. A phase 3 clinical trial examining the efficacy and safety of the drug (compared to placebo) is planned to be completed in 2019. Voxelotor was also studied as a potential therapy for treatment of low oxygen levels in the blood of idiopathic pulmonary fibrosis patients, but this program was discontinued because of a lack of clinical benefits.

Class (Stereo):
CHEMICAL (ABSOLUTE)


Sofosbuvir is a nucleotide analog inhibitor of hepatitis C virus NS5B polymerase - the key enzyme mediating HCV RNA replication. Sofosbuvir is a prodrug and after ingestion it is rapidly converted to GS-331007, the predominant circulating drug that accounts for greater than 90% of the systemically active drug. The compound GS-331007 is efficiently taken up by hepatocytes, whereby cellular kinases convert GS-331007 to its pharmacologically active uridine analog 5’-triphosphate form (GS-461203). This triphosphate compound mimics the natural cellular uridine nucleotide and is incorporated by the HCV RNA polymerase into the elongating RNA primer strand, resulting in chain termination. The active form GS-461203 targets the NS5B catalytic site and acts as a non-obligate chain terminator. The active compound (GS-461203) does not inhibit host DNA polymerases, RNA polymerases, or mitochondrial RNA polymerase. Sofosbuvir (alone or in in combination with other medications) is used to treat Hepatitis C.
CRESTOR (rosuvastatin calcium) is an inhibitor of HMG-CoA reductase. It has been widely launched for the treatment of patients with dyslipidaemia and has also been approved in the US and EU to slow the progression of atherosclerosis.
Lopinavir (ABT-378) is an antiretroviral of the protease inhibitor class. It is used against HIV infections as a fixed-dose combination with another protease inhibitor, ritonavir, under the trade names Kaletra.
Dalfopristin is a pristinamycin-like component of anti-bacterial drug called Synercid which also containes quinupristin (quinupristin:dalfopristin ratio is 30:70 (w/w)). The drug was approved by FDA and used for the treatment of skin diseases caused by Staphylococcus aureus or Streptococcus pyogenes. Dalfopristin binds to the RNA of the 50S ribosomal subunit and thus inhibits the late phase of protein synthesis.

Class (Stereo):
CHEMICAL (ABSOLUTE)



Atorvastatin calcium (LIPITOR®) is a pyrrole and heptanoic acid derivative, a synthetic lipid-lowering agent. Atorvastatin is a selective, competitive inhibitor of 3-hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase. This enzyme catalyzes the conversion of HMG-CoA to mevalonate, an early and rate-limiting step in cholesterol biosynthesis. Atorvastatin is used to reduce serum levels of LDL(low-density lipoprotein)-cholesterol; apolipoprotein B; and triglycerides and to increase serum levels of HDL(high-density lipoprotein)-cholesterol in the treatment of hyperlipidemias and prevention of cardiovascular disease in patients with multiple risk factors.
Ritonavir is a protease inhibitor with activity against Human Immunodeficiency Virus Type 1 (HIV-1). Ritonavir binds to the protease active site and inhibits the activity of the enzyme. It is FDA approved for the treatment of HIV-1 infection. In patients receiving medications metabolized by CYP3A or initiation of medications metabolized by CYP3A in patients already receiving Ritonavir, may increase plasma concentrations of medications metabolized by CYP3A. The most frequently reported adverse drug reactions among patients receiving Ritonavir alone or in combination with other antiretroviral drugs were gastrointestinal (including diarrhea, nausea, vomiting, abdominal pain (upper and lower)), neurological disturbances (including paresthesia and oral paresthesia), rash, and fatigue/asthenia.
Torasemide is a pyridine-sulfonylurea type loop diuretic mainly used for the treatment of edema associated with congestive heart failure, renal disease, or hepatic disease. Also for the treatment of hypertension alone or in combination with other antihypertensive agents. It is also used at low doses for the management of hypertension. It is marketed under the brand name Demadex. Torasemide inhibits the Na+/K+/2Cl--carrier system (via interference of the chloride binding site) in the lumen of the thick ascending portion of the loop of Henle, resulting in a decrease in reabsorption of sodium and chloride. This results in an increase in the rate of delivery of tubular fluid and electrolytes to the distal sites of hydrogen and potassium ion secretion, while plasma volume contraction increases aldosterone production. The increased delivery and high aldosterone levels promote sodium reabsorption at the distal tubules, and by increasing the delivery of sodium to the distal renal tubule, torasemide indirectly increases potassium excretion via the sodium-potassium exchange mechanism. Torasemide's effects in other segments of the nephron have not been demonstrated. Thus torasemide increases the urinary excretion of sodium, chloride, and water, but it does not significantly alter glomerular filtration rate, renal plasma flow, or acid-base balance. Torasemide's effects as a antihypertensive are due to its diuretic actions. By reducing extracellular and plasma fluid volume, blood pressure is reduced temporarily, and cardiac output also decreases.
Fenofibrate is a drug of the fibrate class. It is mainly used to reduce cholesterol levels in people at risk of cardiovascular disease. It’s used as adjunctive therapy to diet to reduce elevated LDL-C, Total-C,Triglycerides and Apo B, and to increase HDL-C in adult patients with primary hypercholesterolemia or mixed dyslipidemia (Fredrickson Types IIa and IIb). Fenofibrate is a fibric acid derivative, a prodrug comprising fenofibric acid linked to an isopropyl ester. Fenofibrate is rapidly hydrolyzed after oral ingestion to its pharmacologically active form, fenofibric acid. The effects of fenofibric acid seen in clinical practice have been explained in vivo in transgenic mice and in vitro in human hepatocyte cultures by the activation of peroxisome proliferator activated receptor α (PPARα). It lowers lipid levels by activating peroxisome proliferator-activated receptor alpha (PPARα). PPARα activates lipoprotein lipase and reduces apoprotein CIII (an inhibitor of lipoprotein lipase activity), which increases lipolysis and elimination of triglyceride-rich particles from plasma. The resulting fall in triglycerides produces an alteration in the size and composition of LDL from small, dense particles (which are thought to be atherogenic due to their susceptibility to oxidation), to large buoyant particles. These larger particles have a greater affinity for cholesterol receptors and are catabolized rapidly. PPARα also increases apoproteins AI and AII, reduces VLDL- and LDL-containing apoprotein B, and increases HDL-containing apoprotein AI and AII.Fenofibrate also reduces serum uric acid levels in hyperuricemic and normal individuals by increasing the urinary excretion of uric acid. Fenofibrate also has an off-label use as uricosuric therapy in people who have gout.