Abstract: A method for identifying a patient with malignant tumor on which the effect of an immune checkpoint inhibitor can be more expected, and agents for suppressing the progression of, suppressing the recurrence of, and/or treating malignant tumor, characterized by prescriptions based on identifying a patient with a malignant tumor on which the effect of an immune checkpoint inhibitor can be more expected, by analyzing evaluation items including combinations such as the PD-1 expression intensity, the percentage of the number of PD-1 expressing cells and the like in Treg cells and CD8+ T cells in tumor tissue or blood.

Abstract: A radio frequency switching circuit device wherein an LC circuit is inserted between two terminals, while a diode is shunted, and wherein the diode is controlled into its nonconductive state and its conductive state by a D.C. voltage, whereby the path between the two terminals is switched into a conductive state and a nonconductive state with respect to a radio frequency signal; characterized in that a transistor which turns "on" upon the application of the D.C. voltage is inserted in series with a D.C. voltage terminal for applying the D.C. voltage to the diode.