National Cancer Institute
U.S. National Institutes of Health | www.cancer.gov

NCI Home
Cancer Topics
Clinical Trials
Cancer Statistics
Research & Funding
News
About NCI
NCI Drug Dictionary
Page Options
Print This Page
Quick Links
Director's Corner
Updates from the Director

Dictionary of Cancer Terms
Cancer-related terms

NCI Drug Dictionary
Definitions, names, and links

Funding Opportunities
Research and training

NCI Publications
Order/download free booklets

Advisory Boards and Groups
Information, meetings, reports

Science Serving People
Learn more about NCI

Español
Información en español
Quit Smoking Today
NCI Highlights
Report to Nation Finds Declines in Cancer Incidence, Death Rates

High Dose Chemotherapy Prolongs Survival for Leukemia

Prostate Cancer Study Shows No Benefit for Selenium, Vitamin E

The Nation's Investment in Cancer Research FY 2009

Past Highlights
Search for
# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All

D-cycloserine
An analogue of the amino acid D-alanine with broad-spectrum antibiotic and glycinergic activities. D-cycloserine interferes with bacterial cell wall synthesis by competitively inhibiting two enzymes, L-alanine racemase and D-alanine:D-alanine ligase, thereby impairing peptidoglycan formation necessary for bacterial cell wall synthesis. This agent may be bactericidal or bacteriostatic, depending on its concentration at the infection site and the susceptibility of the organism. In addition, D-cycloserine is an excitatory amino acid and partial agonist at the glycine binding site of the NMDA receptor in the central nervous system (CNS); binding to the central NMDA receptor may result in amelioration of neuropathic pain. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

D-methionine formulation MRX-1024
A proprietary oral formulation of D-methionine with antioxidant and antimucositis activities. D-methionine formulation MRX-1024 may selectively protect the oral mucosa from the toxic effects of chemotherapy and radiation therapy without compromising antitumor activity. D-methionine may be converted into the L- isomer in vivo, particlualry in instances of L-methionine deprivation; both isomers have antioxidant activity which may be due, in part, to their sulfur moieties and chelating properties. L-methionine, an essential amino acid, also may help to maintain the ratio of reduced glutathione to oxidized glutathione in cells undergoing oxidative stress and may provide a source of L-cysteine for glutathione synthesis. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

D1/3-MAGE-3-His fusion protein
A recombinant fusion protein derived from the melanoma antigen MAGE-3 with potential immunostimulating and antineoplastic activities. Recognized by specific cytotoxic T lymphocytes, D1/3-MAGE-3-His fusion protein may boost antitumoral immune responses when used in a vaccine formulation. This recombinant chimeric protein is produced by fusing MAGE-3 with a lipidated protein D derived from H. influenzae at its N-terminus and a sequence of several histidine residues at its C-terminus. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

DAB389 epidermal growth factor
A recombinant fusion protein composed of the diphtheria toxin with the receptor-binding domain replaced by human epidermal growth factor (EGF). When administered, EGF binds to the endothelial cell growth factor receptor, EGFR, which is upregulated in many solid tumors. After binding to the EGF receptor, the agent is internalized by the cell, where the diphtheria toxin moiety exerts its cytotoxic effect, inhibiting protein synthesis through ADP-ribosylation of elongation factor 2. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

dacarbazine
A triazene derivative with antineoplastic activity. Dacarbazine alkylates and cross-links DNA during all phases of the cell cycle, resulting in disruption of DNA function, cell cycle arrest, and apoptosis. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

dacetuzumab
A humanized monoclonal antibody directed against the CD40 receptor with potential antineoplastic activity. Dacetuzumab specifically binds to and inhibits the CD40 receptor, thereby inducing apoptosis and inhibiting cellular proliferation via antibody-dependent cellular cytotoxicity (ADCC) in cells that overexpress this receptor. The CD40 receptor, a member of the tumor necrosis factor (TNF) receptor super-family, is highly expressed on most B lineage hematologic malignancies including multiple myeloma, non-Hodgkin's lymphoma, chronic lymphocytic leukemia, Hodgkin's disease and acute lymphoblastic leukemia. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

daclizumab
A recombinant monoclonal antibody interleukin-2 receptor antagonist. Daclizumab binds specifically to the alpha subunit of the human interleukin-2 (IL-2) receptor expressed on the surface of activated lymphocytes in vivo, thereby inhibiting IL-2 binding and IL-2-mediated lymphocyte activation, a critical cellular immune response pathway. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

Dacogen
(Other name for: decitabine)

dactinomycin
A chromopeptide antineoplastic antibiotic isolated from the bacterium Streptomyces parvulus. Dactinomycin intercalates between adjacent guanine-cytosine base pairs, blocking the transcription of DNA by RNA polymerase; it also causes single-strand DNA breaks, possibly via a free-radical intermediate or an interaction with topoisomerase II. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

dalteparin
A low molecular weight, synthetic heparin. As an anticoagulant/antithrombotic agent, dalteparin binds to antithrombin and enhances the inhibition of Factor Xa. Compared to unfractionated heparins, the use of dalteparin is associated with lower incidences of osteoporosis and heparin-induced thrombocytopenia. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

danazol
A synthetic androgen derived from ethinyl testosterone. Danazol indirectly reduces estrogen production by decreasing pituitary secretion of follicle-stimulating hormone and luteinizing hormone, and binds to sex hormone receptors in target tissues, thereby exhibiting antiestrogenic, anabolic and weakly androgenic effects. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

daniquidone
A water-insoluble heterocyclic amide with potential antineoplastic activity. Daniquidone inhibits topoisomerases I and II, thereby inhibiting DNA replication and repair, and RNA and protein synthesis. The acetylated form of daniquidone is highly toxic and is capable of inducing unscheduled DNA synthesis; rapid acetylators are more likely to experience toxicity with this agent. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

Danocrine
(Other name for: danazol)

daptomycin
A semi-synthetic cyclic lipopeptide antibiotic isolated form the bacterium Streptomyces roseosporus with broad-spectrum anitbiotic activity against Gram-positive bacteria. Daptomycin has a distinct mechanism of action, in which it binds to bacterial membrane and causes rapid depolarization of the cell membrane due to calcium-dependant potassium efflux; the loss of membrane potential leads to inhibition of DNA, RNA and protein synthesis, resulting in bacterial cell death. This agent does not penetrate the outer membrane of gram-negative bacteria. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

Daraprim
(Other name for: pyrimethamine)

darbepoetin alfa
A recombinant analog of the endogenous cytokine erythropoietin, an erythropoiesis-stimulating protein. Due to the addition of two carbohydrate chains, darbepoetin alfa exhibits a three-fold greater half-life than does erythropoietin. Similar to erythropoietin, darbopoietin alfa binds to and activates epoetin receptors, thereby inducing the differentiation and maturation of erythrocyte progenitors, stimulating endothelial cell proliferation, and stimulating B-cell proliferation and immunoglobulin production. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

darinaparsin
A small-molecule organic arsenical with potential antineoplastic activity. Although the exact mechanism of action is unclear, darinaparsin, a highly toxic metabolic intermediate of inorganic arsenicals (iAs) that occurs in vivo, appears to generate volatile cytotoxic arsenic compounds when glutathione (GSH) concentrations are low. The arsenic compounds generated from darinaparsin disrupt mitochondrial bioenergetics, producing reactive oxygen species (ROS) and inducing ROS-mediated tumor cell apoptosis; in addition, this agent or its byproducts may initiate cell death by interrupting the G2/M phase of the cell cycle and may exhibit antiangiogenic effects. Compared to inorganic arsenic compounds such as arsenic trioxide (As2O3), darinaparsin appears to exhibit a wide therapeutic window. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

dasatinib
An orally bioavailable synthetic small molecule-inhibitor of SRC-family protein-tyrosine kinases. Dasatinib binds to and inhibits the growth-promoting activities of these kinases. Apparently because of its less stringent binding affinity for the BCR-ABL kinase, dasatinib has been shown to overcome the resistance to imatinib of chronic myeloid leukemia (CML) cells harboring BCR-ABL kinase domain point mutations. SRC-family protein-tyrosine kinases interact with variety of cell-surface receptors and participate in intracellular signal transduction pathways; tumorigenic forms can occur through altered regulation or expression of the endogenous protein and by way of virally-encoded kinase genes. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

daunorubicin hydrochloride
The hydrochloride salt of an anthracycline antineoplastic antibiotic with therapeutic effects similar to those of doxorubicin. Daunorubicin exhibits cytotoxic activity through topoisomerase-mediated interaction with DNA, thereby inhibiting DNA replication and repair and RNA and protein synthesis. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

DaunoXome
(Other name for: liposomal daunorubicin citrate)

DC-OVA vaccine
An autologous, multivalent dendritic cell vaccine targeting ovarian cancer with potential immunostimulating and antineoplastic activities. DC-OVA vaccine is produced in vitro by pulsing autologous dendritic cells with killed autologous primary ovarian tumors as a source of tumor-associated antigens (TAAs); the pulsed DCs are then matured using various cytokines. Upon administration, DC-OVA vaccine may stimulate a cytotoxic T lymphocyte (CTL) response against ovarian cancer TAA-expressing ovarian cancer cells. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

Decaspray
(Other name for: dexamethasone)

decitabine
A cytidine antimetabolite analogue with potential antineoplastic activity. Decitabine incorporates into DNA and inhibits DNA methyltransferase, resulting in hypomethylation of DNA and intra-S-phase arrest of DNA replication. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

Deenar
(Other name for: dexamethasone)

deferasirox
A synthetic, orally bioavailable, achiral, tridentate triazole derived from salicylic acid with iron-chelating activity. Deferasirox chelates iron at a 2:1 (ligand:iron) ratio. Because of its oral availablity,and long plasma half-life, this agent may be superior to desferrioxamine (desferal, DFO), which is orally inactive and has a short plasma half-life. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

deferoxamine mesylate
The mesylate salt of an iron-chelating agent that binds free iron in a stable complex, preventing it from engaging in chemical reactions. Deferoxamine chelates iron from intra-lysosomal ferritin and ferrioxamine, a water-soluble complex excreted by the kidneys and in the feces via the bile. This agent does not readily chelate iron bound to transferrin, hemoglobin, myoglobin or cytochrome. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

defibrotide
A polydeoxyribonucleotide with antithrombotic, thrombolytic, and fibrinolytic properties. Defibrotide induces the release of prostaglandin 12 and reduces the expression of adhesion molecules on endothelial cells, thereby interfering with platelet and leukocyte adhesion to the endothelium. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

defined green tea catechin extract
A defined, decaffeinated green tea extract, containing polyphenolic flavonol catechins, isolated from the plant Camellia sinensis with antiviral, antioxidant, and potential chemopreventive activities. The primary catechins found in green tea are epicatechin (EC), epigallocatechin (EGC), epicatechin-3 gallate (ECG), and epigallocatechin-3-gallate (EGCG), the most potent. As potential chemopreventive agents, catechins scavenge free radicals; inhibit enzymes involved in cell replication and DNA synthesis; interfere with cell-to-cell contact adhesion; and inhibit various intracellular communication pathways required for cell division. In addition, it has been postulated that EGCG may "trap" growth factors such platelet-derived growth factor (PDGF) on cell membranes, immobilizing growth factors on cell membranes and preventing ligand-receptor crosslinking and growth factor receptor activation. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

Definity
(Other name for: perflutren lipid microspheres)

deforolimus
A small molecule and non-prodrug analogue of the lipophilic macrolide antibiotic rapamycin with potential antitumor activity. Deforolimus binds to and inhibits the mammalian target of rapamycin (mTOR), which may result in cell cycle arrest and,consequently, the inhibition of tumor cell growth and proliferation. Upregulated in some tumors, mTOR is a serine/threonine kinase involved in regulating cellular proliferation, motility, and survival that is located downstream of the PI3K/Akt signaling pathway. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

degarelix
A long-acting, synthetic peptide with gonadotrophin-releasing hormone (GnRH) antagonistic properties. Degarelix targets and blocks GnRH receptors located on the surfaces of gonadotroph cells in the anterior pituitary, thereby reducing secretion of luteinizing hormone (LH) by pituitary gonadotroph cells and so decreasing testosterone production by interstitial (Leydig) cells in the testes. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

Del-Vi-A
(Other name for: vitamin A compound)

Deladumone
(Other name for: diethylstilbestrol)

Delatestryl
(Other name for: therapeutic testosterone)

delta-8-tetrahydrocannabinol
An analogue of tetrahydrocannabinol (THC) with antiemetic, anxiolytic, appetite-stimulating, analgesic, and neuroprotective properties. Delta-8-tetrahydrocannabinol (delta-8-THC) binds to the cannabinoid G-protein coupled receptor CB1, located in the central nervous system; CB1 receptor activation inhibits adenyl cyclase, increases mitogen-activated protein kinase activities, modulates several potassium channel conductances and inhibits N- and P/Q-type Ca2+ channels. This agent exhibits a lower psychotropic potency than delta-9-tetrahydrocannabinol (delta-9-THC), the primary form of THC found in cannabis. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

Delta-Cortef
(Other name for: prednisolone)

Deltasone
(Other name for: prednisone)

Demerol
(Other name for: meperidine hydrochloride)

demineralized bone matrix
Demineralized allograft bone with osteoinductive activity. Demineralized bone matrices are prepared by acid extraction of allograft bone, resulting in loss of most of the mineralized component but retention of collagen and noncollagenous proteins, including growth factors. The efficacy of a demineralized bone matrix (DBM) as a bone-graft substitute or extender may be related to the total amount of bone morphogenetic protein (BMP) present, and the ratios of the different BMPs present. BMPs belong to the transforming growth factor (TGF) superfamily of proteins. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

DEMSER
(Other name for: metyrosine)

Dendrid
(Other name for: idoxuridine)

dendritic cell-autologous lung tumor vaccine
A cancer vaccine consisting of lymphocytes harvested from a patient with lung cancer and induced to become antigen-presenting cells (APCs) known as dendritic cells. The dendritic cells are transduced with the gene encoding an antigen specific to the patient's cancer and then returned to the patient. In the host, the altered cells stimulate the immune system to mount a primary T cell response against lung tumor cells expressing the target antigen. Dendritic cell-autologous lung tumor vaccines have been investigated for use in cancer immunotherapy. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

dendritic cell-CEA peptide vaccine
A cancer vaccine consisting of dendritic cells harvested from a patient with cancer and pulsed or transduced with a peptide fragment of carcinoembryonic antigen (CEA), a tumor-associated antigen expressed by a wide range of cancers. When the altered dendritic cells are returned to the patient, they may stimulate the host immune system to mount a cytotoxic T-lymphocyte immune response against tumor cells expressing CEA. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

dendritic cell-idiotype-keyhole limpet hemocyanin vaccine
A cell-based vaccine composed of allogeneic dendritic cells (DC), pulsed with patient-specific non-Hodgkin's lymphoma idiotype (Id) determinants conjugated to keyhole limpet hemocyanin (KLH), with potential antitumor activity. Upon administration, this vaccine may stimulate the host immune system to mount a specific cytotoxic T-lymphocyte (CTL) response against Id-expressing lymphoma cells, resulting in tumor cell lysis. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

dendritic cell-MART-1 peptide vaccine
A cancer vaccine consisting of dendritic cells harvested from a patient with cancer and pulsed or transduced with a peptide fragment of MART-1 (melanoma antigen recognized by T-cells), an antigen expressed by melanoma cells. When the altered dendritic cells are returned to the patient, they stimulate the host immune system to mount a cytotoxic T-lymphocyte immune response against tumor cells expressing MART-1. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

denileukin diftitox
A cytotoxic recombinant protein consisting of interleukin-2 (IL-2) protein sequences fused to diphtheria toxin. The IL-2 protein sequence moiety of denileukin difitox directs the cytocidal action of diphtheria toxin to cells that express IL-2 receptors. After the toxin moiety is internalized into target IL-2 receptor-expressing cells, its catalytic domain catalyzes the transfer of the ADP-ribose moiety of NAD to a posttranslationally modified histidine residue of elongation factor 2 (EF-2), called diphthamine. This covalent modification inactivates EF-2 and disrupts polypeptide chain elongation, resulting in cell death. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

denosumab
A humanized monoclonal antibody directed against the receptor activator of nuclear factor kappa beta ligand (RANKL) with antiosteoclast activity. Denosumab specifically binds to RANKL and blocks the interaction of RANKL with RANK, a receptor located on osteoclast cell surfaces, resulting in inhibition of osteoclast activity, a decrease in bone resorption, and a potential increase in bone mineral density. RANKL, a protein expressed by osteoblastic cells, plays an important role in osteoclastic differentiation and activation. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

Depade
(Other name for: naltrexone hydrochloride)

Depakene
(Other name for: valproic acid)

DEPDC1/MPHOSH1 peptide vaccine
A cancer vaccine containing HLA-A*2402-restricted epitopes derived from DEP domain containing 1 (DEPDC1) and M phase phosphoprotein 1 (MPHOSPH1) with potential immunostimulatory and antineoplastic activities. Upon administration, DEPDC1/MPHOSH1 peptide vaccine may elicit a specific cytotoxic T lymphocyte (CTL) response against tumor cells expressing DEPDC1 and MPHOSPH1, tumor antigens that are overexpressed in bladder cancer cells. HLA-A*2402 is an MHC class I molecule that presents antigenic peptides to CD8+ T cells; epitope design restricted to epitopes that bind most efficiently to HLA-A*2402 may improve antigenic peptide immunogenicity. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

Depen
(Other name for: penicillamine)

Depo-Medrol
(Other name for: methylprednisolone)

Depo-Provera
(Other name for: medroxyprogesterone)

DepoCyt
(Other name for: liposomal cytarabine)

Dermacort
(Other name for: therapeutic hydrocortisone)

Deronil
(Other name for: dexamethasone)

Desferal
(Other name for: deferoxamine mesylate)

desflurane
A fluorinated ether with general anesthetic and muscle relaxant activities. Although the exact mechanism of action has not been established, desflurane, administered by inhalation, appears to act on the lipid matirx of the neuronal membrane, resulting in disruption of neuronal transmission in the brain. This agent may also enhance the synaptic activity of the inhibitory neurotransmitter gamma-aminobutyric acid (GABA). Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

deslorelin
A synthetic nonapeptide analogue of the natural gonadotrophin releasing hormone (GnRH) with potential antineoplastic activity. Deslorelin binds to and activates pituitary gonadotropin releasing hormone (GnRH) receptors. Continuous, prolonged administration of goserelin in males results in pituitary GnRH receptor desensitization and inhibition of pituitary secretion of follicle stimulating hormone (FSH) and luteinizing hormone (LH), leading to a significant decline in testosterone production; in females, prolonged administration results in a decrease in estradiol production. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

detorubicin
A semi-synthetic derivative of the anthracycline antineoplastic antibiotic daunorubicin. Detorubicin intercalates into DNA and interacts with topoisomerase II, thereby inhibiting DNA replication and repair and RNA and protein synthesis. This agent also produces toxic free-radical intermediates and interacts with cell membrane lipids causing lipid peroxidation. Detorubicin is less toxic than daunorubicin. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

Detox-B adjuvant
A cancer vaccine adjuvant that consists of an oil droplet emulsion of monophosphoryl lipid A and mycobacterial cell wall skeleton. Detox-B adjuvant is a non-specific immunostimulant that may enhance the host immune response to certain cancer vaccines. Detox-B differs from Detox adjuvant in that Detox-B contains lecithin. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

DetoxPC
A detoxified, nonspecific immunostimulant consisting of a combination of the active monophosphoryl lipid A component of lipopolysaccharide (LPS) isolated from the bacterium Salmonella minnesota combined with a residue of the cell wall of the bacterium Mycobacterium phlei. Detox-PC differs from Detox adjuvant and Detox-B in that Detox-PC contains egg phosphatidylcholine and alpha-tocopherol. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

dexamethasone
A synthetic adrenal corticosteroid with potent anti-inflammatory properties. In addition to binding to specific nuclear steroid receptors, dexamethasone also interferes with NF-kB activation and apoptotic pathways. This agent lacks the salt-retaining properties of other related adrenal hormones. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

dexrazoxane hydrochloride
The hydrochloride salt of a bisdioxopiperazine with iron-chelating, chemoprotective, cardioprotective, and antineoplastic activities. After hydrolysis to an active form that is similar to ethylenediaminetetraacetic acid (EDTA), dexrazoxane chelates iron, limiting the formation of free radical-generating anthracycline-iron complexes, which may minimize anthracycline-iron complex-mediated oxidative damage to cardiac and soft tissues. This agent also inhibits the catalytic activity of topoisomerase II, which may result in tumor cell growth inhibition. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

dextroamphetamine-amphetamine
A combination of two synthetic agents with central nervous system stimulant activity. Both agents are non-catecholamine, sympathomimetic agents that elevate blood pressure and cause bronchodilation. These agents are commonly abused psychostimulant drugs that induce psychologic dependence manifested by elevated mood, increased wakefulness, concentration, physical performance and a feeling of well-being. Tolerance to various effects develops unequally, so that tachycardia and enhanced alertness diminish while psychotoxic effects (hallucinations and delusions) may occur. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

dexverapamil
The R-enantiomer of the calcium channel blocker verapamil. Dexverapamil competitively inhibits the multidrug resistance efflux pump P-glycoprotein (MDR-1), thereby potentially increasing the effectiveness of a wide range of antineoplastic drugs which are inactivated by MDR-1 mechanisms. This agent exhibits decreased calcium antagonistic activity and toxicity compared to racemic verapamil. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

Dezone
(Other name for: dexamethasone)

DHA-paclitaxel
A prodrug comprised of the naturally occurring omega-3 fatty acid docosahexaenoic acid (DHA) covalently conjugated to the anti-microtubule agent paclitaxel. Because tumor cells take up DHA, DHA-paclitaxel is delivered directly to tumor tissue, where the paclitaxel moiety binds to tubulin and inhibits the disassembly of microtubules, thereby resulting in the inhibition of cell division. Paclitaxel also induces apoptosis by binding to and blocking the function of the apoptosis inhibitor protein Bcl-2 (B-cell Leukemia 2). DHA-paclitaxel exhibits improved pharmacokinetic and toxicity profiles when compared to conventional paclitaxel and has demonstrated antineoplastic activity in animal models of cancer. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

DHEA mustard
A steroidal alkylating agent with potential antineoplastic activity. Alkylating agents exert cytotoxic and, in some cases, chemotherapeutic effects by transferring alkyl groups to DNA, thereby damaging DNA and interfering with DNA replication and cell division. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

dianhydrogalactitol
A bifunctional hexitol derivative with potential antineoplastic activity. Dianhydrogalactitol alkylates and cross-links DNA via an epoxide group during all phases of the cell cycle, resulting in disruption of DNA function and cell cycle arrest. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

Diastyl
(Other name for: diethylstilbestrol)

diaziquone
A synthetic bifunctional quinone derivative with potential antineoplastic activity. Diaziquone alkylates and cross-links DNA during all phases of the cell cycle, resulting in disruption of DNA function, cell cycle arrest, and apoptosis. This agent can also form free radicals, thereby initiating DNA damage via DNA strand breaks. Due to its lipophilicity, diaziquone readily crosses the blood brain barrier. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

diazooxonorleucine
An L-glutamine diazo analogue amino acid antibiotic isolated from a species of the bacterial genus Streptomyces with potential antineoplastic activity. Diazooxonorleucine inhibits several glutamine-dependent biosynthetic pathways involved in the the syntheses of D-glucosamine phosphate, purines and pyrimidines. This agent inhibits phosphate-activated glutaminase, a key enzyme for the synthesis of releasable glutamine, depleting cells of this essential amino acid and reducing their capacity to proliferate. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

diazoxide
A benzothiadiazine derivate with antihypertensive and hyperglycemic activities. Diazoxide increases membrane permeability to potassium ions in vascular smooth muscle, thereby stabilizing the membrane action potential and preventing vascular smooth muscle contraction; this results in peripheral vasodilatation and decreases in peripheral vascular resistance. This agent also inhibits insulin release by interacting with ATP-sensitive potassium channels of pancreatic islet beta-cells. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

dichloromethotrexate
A chlorinated methotrexate derivative. Dichloromethotrexate inhibits the enzyme dihydrofolate reductase, thereby preventing the synthesis of purine nucleotides and thymidylates and inhibiting DNA and RNA synthesis. This agent is metabolized and excreted by the liver. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

diclofenac sodium gel
A gel formulation of the sodium salt of diclofenac, a nonsteroidal benzeneacetic acid derivative with analgesic, antipyretic and anti-inflammatory activities. Diclofenac binds to and chelates both isoforms of cyclooxygenase (COX-1 and-2), thereby blocking the conversion of arachidonic acid (AA) to pro-inflammatory prostaglandins. This agent may also inhibit lipooxygenases, resulting in the inhibition of pro-inflammatory leukotriene synthesis from AA. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

didanosine
A synthetic nucleoside analogue of deoxyadenosine in which the 3' hydroxyl on the ribose moiety is replaced by a hydrogen atom. In vivo, didanosine is converted to the active triphosphate form, which is incorporated into DNA. The absence of the 3' hydroxyl inhibits DNA elongation because phosphodiester bonds cannot be made with the substituted hydrogen. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

didemnin B
A cyclic depsipeptide extracted from the Caribbean tunicate Trididemnum cyanophorum. Didemnin B activates caspase, thereby inducing apoptosis, and prevents eukaryotic elongation factor 2 (eEF-2)-dependent translocation, thereby inhibiting protein synthesis. This agent also has immunosuppressive and antiviral properties. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

dideoxyadenosine
A synthetic nucleoside analogue of deoxyadenosine and a prodrug of didanosine in which the 3' hydroxyl group on the ribose moiety is replaced by a hydrogen atom. Dideoxyadenosine competitively inhibits adenylyl cyclase, thereby reducing levels of cyclic adenosine monophosphate (cAMP). By inhibiting cAMP-mediated gene activation in tumor cells, this agent may retard tumor cell proliferation. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

diethyldithiocarbamate
A sulfhydryl-containing carbamate that is the primary in vivo metabolite of disulfiram. Diethyldithiocarbamate chelates zinc, thereby inhibiting metalloproteinases, thereby preventing the degradation of the extracellular matrix and inhibiting an initial step in cancer metastasis and angiogenesis. A known inhibitor of superoxide dismutase, this agent can either potentiate or protect against cell oxidative damage caused by ionizing radiation, depending on the time of administration. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

diethylstilbestrol
DES; the acronym for diethylstilbestrol, a synthetic, nonsteroidal form of estrogen. A well-known teratogen and carcinogen, DES inhibits the hypothalamic-pituitary-gonadal axis, thereby blocking the testicular synthesis of testosterone, lowering plasma testosterone, and inducing a chemical castration. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

Difflam
(Other name for: benzydamine hydrochloride)

Diflucan
(Other name for: fluconazole)

digoxin
A cardiac glycoside. Digoxin inhibits the sodium potassium adenosine triphosphatase (ATPase) pump, thereby increasing intracellular calcium and enhancing cardiac contractility. This agent also acts directly on the atrioventricular node to suppress conduction, thereby slowing conduction velocity. Apparently due to its effects on intracellular calcium concentrations, digoxin induces apoptosis of tumor cells via a pathway involving mitochondrial cytochrome c and caspases 8 and 3. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

dihydro-5-azacytidine
A synthetic nucleoside analogue of deoxycytidine. Dihydro-5-azacytidine inhibits DNA methyltransferase, thereby interfering with abnormal DNA methylation patterns that are associated with genetic instability in some tumor cells. Inhibition of this enzyme may restore expression of tumor-suppressor genes and result in antitumor activity. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

dihydrolenperone
A butyrophenone that has been investigated for antineoplastic activity. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

dihydrotestosterone
The most potent androgen, required for sex development. Dihydrotestosterone is synthesized from testosterone in the prostate gland, testes, hair follicles and adrenal glands by 5-alpha reductase. Dihydrotestosterone exerts its action similar to testosterone, which binds to and activates specific nuclear androgen receptors. After translocation into the nucleus, the activated hormone-receptor complex binds to the androgen response elements on the DNA and activates gene expressions that are required for sex development. Dihydrotestosterone is responsible for the formation of male primary sex characteristics and most male secondary sex characteristics during puberty, such as muscular growth, facial and body hair growth, and deepening of the voice. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

diindolylmethane
A phytonutrient and plant indole found in cruciferous vegetables including broccoli, brussels sprouts, cabbage, cauliflower and kale, with potential antiandrogenic and antineoplastic activities. As a dimer of indole-3-carbinol, diindolylmethane (DIM) promotes beneficial estrogen metabolism in both sexes by reducing the levels of 16-hydroxy estrogen metabolites and increasing the formation of 2-hydroxy estrogen metabolites, resulting in increased antioxidant activity. Although this agent induces apoptosis in tumor cells in vitro, the exact mechanism by which DIM exhibits its antineoplastic activity in vivo is unknown. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

Dilaudid HP
(Other name for: hydromorphone hydrochloride)

diltiazem hydrochloride
A benzothiazepine calcium channel blocking agent. Diltiazem hydrochloride inhibits the transmembrane influx of extracellular calcium ions into select myocardial and vascular smooth muscle cells, causing dilatation of coronary and systemic arteries and decreasing myocardial contractility. Because of its vasodilatory activity, this agent has been shown to improve the microcirculation in some tumors, thereby potentially improving the delivery of antineoplastic agents to tumor cells. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

Dimericine
(Other name for: T4N5 liposomal lotion)

dimesna
A synthetic derivative of dithio-ethane sulfonate with uroprotective properties. In the kidney, dimesna undergoes reduction to the free thiol compound, mesna, which reacts chemically with the urotoxic ifosfamide metabolites acrolein and 4-hydroxy-ifosfamide, resulting in their detoxification. This agent also inhibits cyclophosphamide-induced hemorrhagic cystitis. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

dimethyl sulfoxide
A polar organic solvent. DMSO is a free radical scavenger that has been used to treat extravasation damage caused by anthracycline-based chemotherapy. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

dimethylbusulfan
An aliphatic analogue of busulfan with potential antineoplastic activity. As an alkylating agent, dimethylbusulfan induces neutropenia and has been shown to exhibit antitumor effects in some animal models. Alkylating agents exert cytotoxic and chemotherapeutic effects by transferring alkyl groups to DNA, thereby damaging DNA and interfering with DNA synthesis and cell division. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

dimethylxanthenone acetic acid
A fused tricyclic analogue of flavone acetic acid with potential antineoplastic activity. Dimethylxanthenone acetic acid induces the cytokines tumor necrosis alpha (TNF-alpha), serotonin and nitric oxide, resulting in hemorrhagic necrosis and a decrease in angiogenesis. This agent also stimulates the anti-tumor activity of tumor-associated macrophages. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

Dimorphone
(Other name for: hydromorphone hydrochloride)

dinitrophenyl
A small molecule containing 2 phenol rings, characterized as a hapten for use in vaccine preparation. Dinitrophenyl by itself will not elicit any immune response nor bind to antigen. Dinitrophenyl compound is commonly used to couple with peptides in vaccine preparation to enhance the immunogenicity of otherwise weak immunogenic antigens. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

dinoprost tromethamine
A synthetic analogue of the naturally occurring prostaglandin F2 alpha. Prostaglandin F2 alpha stimulates myometrial activity, relaxes the cervix, inhibits corpus luteal steroidogenesis, and induces luteolysis by direct action on the corpus luteum. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

Diovan
(Other name for: valsartan)

diphenhydramine hydrochloride
The hydrochloride salt form of diphenhydramine, an ethanolamine and first-generation histamine antagonist with anti-allergic activity. Diphenhydramine hydrochloride competitively blocks H1receptors, thereby preventing the actions of histamine on bronchial smooth muscle, capillaries, and gastrointestinal (GI) smooth muscle. This prevents histamine-induced bronchoconstriction, vasodilation, increased capillary permeability, and GI smooth muscle spasms. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

Diprivan
(Other name for: propofol)

dipyridamole
A synthetic agent derivative of pyrimido-pyrimidine, with antiplatelet properties. Dipyridamole inhibits adenosine uptake by platelets and endothelial cells, triggering an accumulation of cyclic adenosine monophosphate (cAMP), and inhibiting the stimulation of platelet aggregation by agents such as platelet activating factor and collagen. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

disaccharide tripeptide glycerol dipalmitoyl
A lipophilic disaccharide tripeptide derivative of muramyl dipeptide (MDP) with immunomodulatory activity. Disaccharide tripeptide glycerol dipalmitoyl (DTP-GDP)stimulates macrophage activity and increases serum levels of tumor necrosis factor alpha (TNF alpha), neopterin, interleukin (IL)-1 alpha, IL-1 beta, IL-6, IL-8, and IL-12, which may activate host immune system antitumor functions. DTP-GDP may be packaged in liposomes for improved delivery. The immunomodulatory effects of this agent may be superior to those of MDP. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

Disalcid
(Other name for: sodium salicylate)

disulfiram
A carbamoyl derivate used in the treatment of alcoholism. Disulfiram irreversibly inhibits acetaldehyde dehydrogenase that oxidizes the ethanol metabolite acetaldehyde into acetic acid. This leads to an accumulation of acetaldehyde that produces a variety of very unpleasant symptoms referred to as the disulfiram-alcohol reaction. This reaction includes , but is not limited to, flushing, headache, respiratory difficulty, nausea,vomiting, sweating, thirst, chest pain, tachycardia, blurred vision and hypotension. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

DJ-927
A semi-synthetic, orally bioavailable taxane derivative with potential antineoplastic properties. Oral taxane derivative DJ-927 binds to tubulin, promoting microtubule assembly and stabilization and preventing microtubule depolymerization, thereby inhibiting cell proliferation. As it represents poor substrate for P-glycoprotein-related drug resistance mechanisms, this agent may be useful for treating multi-drug resistant tumors. As the first oral taxane derivative, oral taxane derivative DJ-927 is more potent than paclitaxel and docetaxel. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

DM4-conjugated anti-Cripto monoclonal antibody BIIB015
A humanized IgG1monoclonal antibody directed against the cell surface-associated protein Cripto and conjugated to the maytansinoid DM4 with potential antineoplastic activity. The monoclonal antibody moiety of DM4-conjugated anti-Cripto monoclonal antibody BIIB015 binds to the tumor associated antigen (TAA) Cripto; upon internalization, the DM4 moiety binds to tubulin and disrupts microtubule assembly/disassembly dynamics, resulting in inhibition of cell division and cell growth of Cripto-expressing tumor cells. Constitutively expressed during embryogenesis, Cripto belongs to the EGF-CFC family of growth factor-like molecules and plays a key role in signaling pathways of certain transforming growth factor-beta superfamily members; as a TAA, Cripto is overexpressed in carcinomas such as those of the breast, ovary, stomach, lung, and pancreas while its expression is absent in normal tissues. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

DNA plasmid vector pPRA-PSM vaccine
A cancer vaccine consisting of a DNA plasmid encoding epitopes of the human preferential antigen of melanoma (PRAME) and the prostate specific membrane antigen (PSMA) with potential immunostimulating activity. Upon direct administration of this vaccine into lymph nodes, peptides expressed by DNA plasmid vector pPRA-PSM may activate the immune system, resulting in a cytotoxic T-lymphocyte (CTL) response against PRAME- and PSMA-expressing cells. PRAME and PSMA are tumor associated antigens upregulated in a number of cancer cell types. As part of the MKC1106-PP regimen exploiting the 'prime-boost strategy', this plasmid is responsible for priming the immune response and is used in conjunction with a peptide vaccine consisting of PRAME and PSMA that boosts the immune system against PRAME- and PSMA-expressing tumor cells. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

docetaxel
A semi-synthetic, second-generation taxane derived from a compound found in the European yew tree Taxus baccata. Docetaxel displays potent and broad antineoplastic properties; it binds to and stabilizes tubulin, thereby inhibiting microtubule disassembly which results in cell- cycle arrest at the G2/M phase and cell death. This agent also inhibits pro-angiogenic factors such as vascular endothelial growth factor (VEGF) and displays immunomodulatory and pro-inflammatory properties by inducing various mediators of the inflammatory response. Docetaxel has been studied for use as a radiation-sensitizing agent. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

docetaxel emulsion ANX-514
An injectable emulsion formulation containing the taxane docetaxel, a semisynthetic analogue of paclitaxel, with antineoplastic activity. Docetaxel binds specifically to the beta-tubulin subunit of the microtubule, stabilizing tubulin and inhibiting microtubule disassembly, which results in cell-cycle arrest at the G2/M phase and cell death. This agent also inhibits pro-angiogenic factors such as vascular endothelial growth factor (VEGF) and induces various mediators of the inflammatory response. Docetaxel emulsion ANX-514 is formulated without polysorbate 80 or other detergents in order to reduce the incidence and severity of hypersensitivity reactions. In addition, the exclusion of polysorbate 80 in this formulation precludes foaming during the preparation process, thus facilitating preparation and administration. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

dolasetron mesylate
An indole derivative with antiemetic activity. As a selective serotonin receptor antagonist, dolasetron mesylate competitively blocks the action of serotonin at 5HT3 receptors, resulting in suppression of chemotherapy- and radiotherapy-induced nausea and vomiting. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

dolastatin 10
A pentapeptide originally isolated from the marine mollusk Dolabella auricularia with potential antineoplastic activity. Binding to tubulin, dolastatin 10 inhibits microtubule assembly, resulting in the formation of tubulin aggregates and inhibition of mitosis. This agent also induces tumor cell apoptosis through a mechanism involving bcl-2, an oncoprotein that is overexpressed in some cancers. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

Dolophine
(Other name for: methadone hydrochloride)

Domestrol
(Other name for: diethylstilbestrol)

Domolene-HC
(Other name for: therapeutic hydrocortisone)

donepezil hydrochloride
The hydrochloride salt of a piperidine derivative with neurocognitive-enhancing activity. Donepezil reversibly inhibits acetylcholinesterase, thereby blocking the hydrolysis of the neurotransmitter acetylcholine and, consequently, increasing its activity. This agent may improve neurocognitive function in Alzheimer's disease, reduce sedation associated with opioid treatment of cancer pain, and improve neurocognitive function in patients who have received radiation therapy for primary brain tumors or brain metastases. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

Dopar
(Other name for: levodopa)

dornase alfa inhalation solution
A highly purified solution of recombinant human deoxyribonuclease I (rhDNAse) with selective DNA cleaving activity. Administrated through inhalation of the nebulized solution, dornase alpha catalyzes DNA degradation in viscous airway secretions, which may render airway secretions less viscous, thus promoting the clearing of airway mucous plugging and improvement in pulmonary function. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

dovitinib lactate
The orally bioavailable lactate salt of a benzimidazole-quinolinone compound with potential antineoplastic activity. Dovitinib strongly binds to fibroblast growth factor receptor 3 (FGFR3) and inhibits its phosphorylation, which may result in the inhibition of tumor cell proliferation and the induction of tumor cell death. In addition, this agent may inhibit other members of the RTK superfamily, including the vascular endothelial growth factor receptor; fibroblast growth factor receptor 1; platelet-derived growth factor receptor type 3; FMS-like tyrosine kinase 3; stem cell factor receptor (c-KIT); and colony-stimulating factor receptor 1; this may result in an additional reduction in cellular proliferation and angiogenesis, and the induction of tumor cell apoptosis. The activation of FGFR3 is associated with cell proliferation and survival in certain cancer cell types. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

Dox-SL
(Other name for: pegylated liposomal doxorubicin hydrochloride)

doxercalciferol
A synthetic analog of vitamin D with potential antineoplastic activity. In the liver, doxercalciferol is converted to its biologically active vitamin D metabolites, which control the intestinal absorption of dietary calcium, the tubular reabsorption of calcium by the kidney and, in conjunction with parathyroid hormone (PTH), the mobilization of calcium from the skeleton. Through interaction with specific receptor proteins in target tissues, these vitamin D metabolites act directly on osteoblasts to stimulate skeletal growth, and on the parathyroid glands to suppress PTH synthesis and secretion. This agent has also been shown to inhibit the growth of retinoblastomas, and may exhibit some antiproliferative activity against prostate cancer cells. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

doxifluridine
A fluoropyrimidine derivative and oral prodrug of the antineoplastic agent 5-fluorouracil (5-FU) with antitumor activity. Doxifluridine, designed to circumvent the rapid degradation of 5-FU by dihydropyrimidine dehydrogenase in the gut wall, is converted into 5-FU in the presence of pyrimidine nucleoside phosphorylase. 5-FU interferes with DNA synthesis and subsequent cell division by reducing normal thymidine production and interferes with RNA transcription by competing with uridine triphosphate for incorporation into the RNA strand. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

DOXIL
(Other name for: pegylated liposomal doxorubicin hydrochloride)

doxorubicin hydrochloride
The hydrochloride salt of doxorubicin, an anthracycline antibiotic with antineoplastic activity. Doxorubicin, isolated from the bacterium Streptomyces peucetius var. caesius, is the hydroxylated congener of daunorubicin. Doxorubicin intercalates between base pairs in the DNA helix, thereby preventing DNA replication and ultimately inhibiting protein synthesis. Additionally, doxorubicin inhibits topoisomerase II which results in an increased and stabilized cleavable enzyme-DNA linked complex during DNA replication and subsequently prevents the ligation of the nucleotide strand after double-strand breakage. Doxorubicin also forms oxygen free radicals resulting in cytotoxicity secondary to lipid peroxidation of cell membrane lipids; the formation of oxygen free radicals also contributes to the toxicity of the anthracycline antibiotics, namely the cardiac and cutaneous vascular effects. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

doxorubicin prodrug INNO-206
A 6-maleimidocaproyl hydrazone derivative prodrug of the anthracycline antibiotic doxorubicin (DOXO-EMCH) with antineoplastic activity. Following intravenous administration, doxorubicin prodrug INNO-206 binds selectively to the cysteine-34 position of albumin via its maleimide moiety. Doxorubicin is released from the albumin carrier after cleavage of the acid-sensitive hydrazone linker within the acidic environment of tumors and, once located intracellularly, intercalates DNA, inhibits DNA synthesis, and induces apoptosis. Albumin tends to accumulate in solid tumors as a result of high metabolic turnover, rapid angiogenesis, hyervasculature, and impaired lymphatic drainage. Because of passive accumulation within tumors, this agent may improve the therapeutic effects of doxorubicin while minimizing systemic toxicity. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

doxorubicin-GnRH agonist conjugate AEZS-108
A peptide agonist of the gonadotropin releasing hormone-1 receptor (GnRH-1R) that is conjugated to the anthracycline antibiotic doxorubicin with potential antineoplastic activity. Doxorubicin-GnRH agonist conjugate AEZS-108 binds to GnRH-1Rs, which may be highly expressed on endometrial and ovarian tumor cell membrane surfaces, and is internalized. Once inside the cell, the doxorubicin moiety of this agent intercalates into DNA and inhibits the topoisomerase II activity, which may result in the inhibition of tumor cell DNA replication and tumor cell proliferation. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

doxorubicin-HPMA conjugate
A copolymer conjugate of the antineoplastic anthracycline doxorubicin and the water-soluble polymer N-(2-hydroxypropyl) methacrylamide (HPMA). Doxorubicin, an intercalator and a topoisomerase II inhibitor, prevents DNA replication and ultimately inhibits protein synthesis. This agent also generates oxygen free radicals, resulting in cytotoxic lipid peroxidation of cell membrane lipid. HPMA conjugation enhances the permeability and retention of this agent within the tumor vasculature. Poorly cleared by the lymphatic system, this formulation undergoes increased cleavage by tumor cell lysosomal proteinases, resulting in increased, sustained intracellular concentrations of free doxorubicin. Compared to other doxorubicin-containing formulations, this formulation may exhibit an improved toxicity profile due to the lower concentrations of free doxorubicin to which non-malignant tissues are exposed. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

doxorubicin-magnetic targeted carrier complex
A formulation of the anthracycline antibiotic doxorubicin in which doxorubicin is bound to microscopic beads of activated carbon and iron as a magnetic-targeted carrier (MTC). Doxorubicin, an intercalator and a topoisomerase II inhibitor, prevents DNA replication and ultimately inhibits protein synthesis. This agent also generates oxygen free radicals, resulting in cytotoxic lipid peroxidation of cell membrane lipids. Guided by the placement of a magnet on the body surface overlying a tumor site, the doxorubicin-MTC complex delivers doxorubicin directly to the tumor site, thereby targeting and prolonging the duration of doxorubicin-mediated cytotoxicity to the tumor bed while minimizing systemic toxicity. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

doxycycline
A synthetic, broad-spectrum tetracycline antibiotic exhibiting antimicrobial activity. Doxycycline binds to the 30S ribosomal subunit, possibly to the 50S ribosomal subunit as well, thereby blocking the binding of aminoacyl-tRNA to the mRNA-ribosome complex. This leads to an inhibition of protein synthesis. In addition, this agent has exhibited inhibition of collagenase activity. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

dronabinol
A synthetic form of delta-9-tetrahydrocannabinol, a psychoactive substance found in Cannabis sativa. Dronabinol acts directly on the appetite and vomiting control centers in the brain to stimulate appetite and prevent emesis. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

droperidol
A butyrophenone with anti-emetic, sedative and anti-anxiety properties. Although the exact mechanism through which droperidol exerts its effects is unknown, droperidol may block dopamine receptors in the chemoreceptor trigger zone (CTZ), which may lead to its anti-emetic effect. This agent may also bind to postsynaptic gamma-aminobutyric acid (GABA) receptors in the central nervous system (CNS), which increases the inhibitory effect of GABA and leads to sedative and anti-anxiety activities. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

Droxia
(Other name for: hydroxyurea)

DT(388)IL3 fusion protein
A recombinant protein consisting of human interleukin 3 (IL3) fused to the first 388 amino acids of diphtheria toxin [DT(388)] with potential antineoplastic activity. Upon administration, the IL3 moiety of the DT(388)IL3 fusion protein binds to IL3 receptors on cells expressing the receptor. Subsequently, the DT(388) toxin moiety, containing both translocation and catalytic domains, translocates across the cell membrane endocytotically; within the cytosol, the catalytic domain catalyzes the ADP-ribosylation of, and inactivates, translation elongation factor 2 (EF-2), resulting in the inhibition of translation during protein synthesis. IL3 may be overexpressed by acute myeloid leukemia (AML) cells. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

DTA-H19 plasmid
A plasmid DNA encoding the A chain of the diphtheria toxin (DT-A) driven by the transcriptional regulatory sequences of human H19, with potential antineoplastic activity. Because the expression of DT-A is under the control of H19 promotor elements, DT-A is selectively expressed in tumor cells capable of turning on H-19. DT-A catalyzes ADP-ribosylation of translation elongation factor 2 (EF-2), resulting in the inhibition of protein synthesis and apoptosis. In addition, DT-A protein released from lysed cells cannot enter and kill neighboring cells because of the absence of the DT-B chain, further enhancing the selective cytotoxicity of this agent. Human H19 is a paternally-imprinted, oncofetal gene encoding an RNA product; it acts as a "riboregulator" in gene expression and is found at substantial levels in different human tumor cell types while its expression in normal adult tissue is limited. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

DTIC-Dome
(Other name for: dacarbazine)

duborimycin
An anthracycline antineoplastic antibiotic with therapeutic effects similar to those of doxorubicin. Duborimycin exhibits cytotoxic activity through topoisomerase-mediated interaction with DNA, thereby inhibiting DNA replication and repair and RNA and protein synthesis. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

duloxetine hydrochloride
The hydrochloride salt of duloxetine, a fluoxetine derivative belonging to the class of selective serotonin (5-HT) and norepinephrine (NE) reuptake inhibitors (SSNRIs) and exhibiting antidepressant activity. Duloxetine selectively prevents the reuptake of 5-HT and NE via transporter complexes on the pre-synaptic membrane, thereby increasing the level of these neurotransmitters within the synaptic cleft. As a result, this agent potentiates serotonergic and noradrenergic activities in the central nervous system, and alleviates depression and neuropathy sensations, such as pain and tingling. Furthermore, duloxetine does not show significant affinity for dopaminergic, adrenergic, cholinergic, histaminergic, opioid, glutamate, and gamma-aminobutyric acid (GABA) receptors. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

dutasteride
A synthetic 4-azasteroid compound with antiandrogenic activity. Dutasteride competitively and specifically binds to isoenzymes 1 and 2 of 5-alpha-reductase, forming stable enzyme complexes and inhibiting the conversion of testosterone to 5α-dihydrotestosterone (DHT); the reduction in DHT activity may mitigate or prevent enlargement of the prostate gland. The type 2 5-alpha-reductase isoenzyme is primarily active in the reproductive tissues while the type 1 isoenzyme is also active in skin and the liver. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

Dynacin
(Other name for: minocycline hydrochloride)

Back to Top


A Service of the National Cancer Institute
Department of Health and Human Services National Institutes of Health USA.gov