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cyproterone acetate
The acetate salt of a synthetic steroidal antiandrogen with weak progestational and antineoplastic activities. Cyproterone binds the androgen receptor (AR), thereby preventing androgen-induced receptor activation in target tissues and inhibiting the growth of testosterone-sensitive tumor cells. This agent also exerts progestational agonist properties at the level of the pituitary that reduce luteinizing hormone (LH), resulting in reductions in testicular androgen secretion and serum testosterone levels. Treatment with cyproterone alone results in incomplete suppression of serum testosterone levels. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

Cyren A
(Other name for: diethylstilbestrol)

cytarabine
An antimetabolite analogue of cytidine with a modified sugar moiety (arabinose instead of ribose). Cytarabine is converted to the triphosphate form within the cell and then competes with cytidine for incorporation into DNA. Because the arabinose sugar sterically hinders the rotation of the molecule within DNA, DNA replication ceases, specifically during the S phase of the cell cycle. This agent also inhibits DNA polymerase, resulting in a decrease in DNA replication and repair. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

cytochlor
A radio-sensitizing pyrimidine nucleoside with potential antineoplastic activity. Cytochlor is metabolized first to a phosphate derivative, CldCMP, by the enzyme deoxycytidine kinase and then to the active uracyl derivative, CldUMP, by the enzyme dCMP deaminase; deoxycytidine kinase and dCMP deaminase have been found in abnormally high concentrations in most cancers. CldUMP, the active metabolite, incorporates into DNA and, upon exposure to radiation, induces the formation of uracil radicals and double-strand DNA breaks. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

cytokine-induced killer cells
A preparation of autologous lymphocytes with potential immunopotentiating and antineoplastic activities. Cytokine-induced killer (CIK) cells are CD3-and CD56-positive, non-major histocompatibility complex (MHC)-restricted, natural killer (NK)-like T lymphocytes, generated ex-vivo by incubation of peripheral blood lymphocytes (PBLs) with anti-CD3 monoclonal antibody, interleukin (IL)-2, IL-1, and interferon gamma (IFN-gamma) and then expanded. When reintroduced back to patients after autologous stem cell transplantation, CIK cells may recognize and kill tumor cells associated with minimal residual disease (MRD). CIK cells may have enhanced cytotoxic activity compared to lymphokine-activated killer (LAK) cells. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

cytomegalovirus pp65-specific cytotoxic T lymphocytes
Cytotoxic T lymphocytes (CTLs) specifically reactive to the cytomegalovirus (CMV) phosphoprotein pp65 with potential antiviral activity. To prepare CMV pp65-specific cytotoxic T lymphocytes in vitro, dendritic cells (DCs) are pulsed with CMV pp65 epitopes and then used to stimulate and propagate CMV pp65-specific cytotoxic T lymphocytes from peripheral blood mononuclear cells (PBMNCs); the CMV pp65-specific cytotoxic T lymphocyte population is then expanded so as to be sufficient for use in adoptive T lymphocyte therapy. When administered into a patient post-allogeneic hematopoietic stem cell transplantation, this agent may elicit a specific CTL response against CMV-infected host cells, which may result in the resolution of CMV infection. The CMV pp65 protein (65 kDa lower matrix phosphoprotein), the primary component of the enveloped subviral particle, is an immunodominant target for helper and cytotoxic T lymphocyte responses to CMV. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)

Cytomel
(Other name for: liothyronine sodium)

Cytosar-U
(Other name for: cytarabine)

Cytoxan
(Other name for: cyclophosphamide)

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