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Shows male hormones weaken CD4+ T-cell help in cancer, suggesting new immunotherapy approaches.
Sex differences in antitumor immunity contribute to disparities in cancer outcomes, yet the role of CD4+ T helper cells in this context remains poorly understood. In this issue, Hunt and colleagues show that sex hormones restrain CD4+ T-cell help in males, weakening antitumor immune responses and promoting tumor progression. This work identifies CD4+ T-cell help as a previously underappreciated driver of sex-biased cancer immunity, with potential implications for sex-informed immunotherapy strategies. See related article by Hunt et al., p. XX .
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Lee et al. (2026) studied this question.
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