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Overall survival time of 583 lung cancer patients from Nagoya City University studied in reference to the cytotoxic T-lymphocyte-associated antigen 4 (CTLA-4) single-nucleotide polymorphism rs231775 gene status. The survival time of the patients with +49 AA CTLA-4 (●; n=83, 21 succumbed) and the patients with +49 GA or GG CTLA-4 (○; n=500, 140 succumbed) was not significantly different (log-rank test, P=0.6861).
