Evaluation of tolerability and reactions of immune checkpoint inhibitors.
e14605 Background: Immunotherapies have revolutionized the treatment of cancer, especially in recent years. Today, there are anti-CTLA-4 antibodies and PD-L1 monoclonal antibodies which are active in use as checkpoint inhibitors. Side effects of these agents have a different spectrum in the form of immuno-related side effects. Methods: In this study, we aimed to evaluate the side effect and tolerability in patients treated with immune checkpoint inhibitors in our clinic. Results: 32 patients who were treated with PD-L1 monoclonal antibodies between August 2015 and January 2017 were screened retrospectively in our clinic. Six of the cases had immuno-related side effects (18.75%). 2 patients had a elevated liver function test. Both patients were diagnosed with NSCLC. In both of them, elevation was detected in the second course of nivolumab treatment, and the USG and hepatitis markers of the patients were normal. Enzymes returned to normal after treatment interruption. In a patient diagnosed with malignant melanoma that receiving pembrolizumab colitis was developed after 3th cycles of the therapy. The treatment of the patient who recovered after steroid administration and treatment interruption continued until the 8th cure. In the third cure of the patient with NSCLC, when nivolumab was used pneumonitis was diagnosed. Steroid treatment was applied for 2 weeks. Our patient continued to use nivolumab for up to 22 cycles. In our patient with malign melanoma that treated with pembrolizumab autoimmune thyroiditis developed. We started prednisolone treatment. After recovery our patient's treatment continued. In one of our patient who was diagnosed with malign melanoma, after the second cure of the treatment, diffuse edema and shortness of breath due to heart failure was detected. Echocardiography revealed a low ejection fraction. Methylprednisolone was started by cessation of treatment. Control ejection fractions normalized. Conclusions: İmmuno-related side effects were regarded as manageable side effects and no treatment change was needed. Immune Checkpoint inhibitors, which have been shown to be useful for survival every day, are proceeding to take a favorable position in the treatment of cancer with ease of use and lack of side effects.