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[Clinical trial of IL-12 for cancer patients]
Interleukin-12 (IL-12) is a cytokine that stimulates T cells and NK cells. It induces interferon-gamma and plays a unique role in promoting type 1 T helper cell responses. In various animal models, IL-12 has shown a therapeutic effect controlling growth of primary and metastatic tumors at nontoxic doses. On the basis of these findings, IL-12 is now under clinical trial. Fever, flu-like, general fatigue, arthralgia, myalgia, leukopenia, liver dysfunction and so on are the reported toxicities of IL-12. A dramatic decrease of IL-12 AUC after consecutive dosing of IL-12, production of IL-10 and temporal elevation of NK and LAK activities after IL-12 administration have also been observed. Several patients achieve PRs after the administration, but dramatic clinical responses have never been reported. Intensive research on the mechanisms of antitumor response of IL-12 in cancer patients should be very important to the successful development of IL-12 as an anti-cancer agent.
Interleukin-12 (IL-12) is a cytokine that stimulates T cells and NK cells. It induces interferon-gamma and plays a unique role in promoting type 1 T helper cell responses. In various animal models, IL-12 has shown a therapeutic effect controlling growth of primary and metastatic tumors at nontoxic doses. On the basis of these findings, IL-12 is now under clinical trial. Fever, flu-like, general fatigue, arthralgia, myalgia, leukopenia, liver dysfunction and so on are the reported toxicities of IL-12. A dramatic decrease of IL-12 AUC after consecutive dosing of IL-12, production of IL-10 and temporal elevation of NK and LAK activities after IL-12 administration have also been observed. Several patients achieve PRs after the administration, but dramatic clinical responses have never been reported. Intensive research on the mechanisms of antitumor response of IL-12 in cancer patients should be very important to the successful development of IL-12 as an anti-cancer agent.