Hypoxia upregulates the expression of PD-L1 via NPM1 in breast cancer

Background
A hypoxic microenvironment is the most frequent characteristic in tumor microenvironment. Programmed death-ligand 1 (PD-L1) is an important molecule and therapeutic target that mediates the immune response of tumor cells. Previous studies h…

A real-world study on the efficacy and safety of low-dose PD-1 monoclonal antibody alone or in combination as the first-line treatment for advanced non-small cell lung cancer

Background
In clinical practice, patients with non-small cell lung cancer (NSCLC) often receive low-dose programmed death-1 (PD-1) monoclonal antibodies due to physical or financial limitations. However, the efficacy and safety of low-dose compared wi…

Novel fusion superkine, IL-24S/IL-15, enhances immunotherapy of brain cancer

Background
Glioblastoma (GBM) is a rapidly growing, aggressive brain tumor with very poor prognosis without currently effective therapies. The immunosuppressive nature of the tumor microenvironment (TME) in GBM hinders the development of effective tum…

Programmed death-1 inhibition increases vaccine-induced T-cell infiltration in patients with prostate cancer

Background
Prostate cancer (PC) is the most frequently diagnosed cancer in men worldwide, making up 21% of all cancer cases. Although generally slow-growing, 370,000 men die from PC yearly. Immune checkpoint inhibitors (ICIs) are currently only indica…

SITC perspective: leveraging patient enrichment biomarkers to accelerate early phase IO drug development

Cancer immunotherapy (IO) enables patients to live well with cancer for many years, or even be cured. Several investigational IO agents recently failed in early-phase or late-phase trials, leading some to doubt the future of IO. Patient heterogeneity …

STS2 deficiency revives CD8+T cells from exhaustion and augments checkpoint blockade efficacy in cancer immunotherapy

Background
T-cell exhaustion is a major barrier to effective antitumor immunity and limits the efficacy of cancer immunotherapies. This study investigates the role of suppressor of T-cell signaling 2 (STS2, also known as UBASH3A) in regulating CD8+ T-…

Hyperglycemia induces an immunosuppressive microenvironment in colorectal cancer liver metastases by recruiting peripheral blood monocytes through the CCL3-CCR1 axis

Background
The treatment of colorectal cancer liver metastasis (CRLM), a leading cause of mortality in patients with colorectal cancer, is complicated by type 2 diabetes (T2D). This study aimed to investigate the CRLM immune microenvironment in the co…

Cancer immunotherapy clinical trials to support urgently needed access in low- and middle-income countries: a report from the SITC global access and impact committee

Cancer is rapidly on the rise as a cause of morbidity and mortality in low- and middle-income countries (LMICs). However, despite the increasing importance of immune checkpoint inhibitors (ICIs) as a pillar of cancer therapy, access in these settings …

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