Liu and colleagues show that a previously described G396R variant of the human IGHG1 gene offers increased protection from SARS-CoV-2 and bacterial infections.

When monkeys are infected with a virus similar to HIV, treated with antiretroviral therapy (ART), and are administered a ‘combo therapy’ made of antibodies against molecules that inhibit immune responses, they control viral rebound when ART is discontinued for more than 6 months

PD-1 is a critical modulator of CD8⁺ T cell activation and exhaustion. Sen and colleagues show that a cell-state-specific enhancer tunes PD-1 expression exclusively in exhaustion and that deletion of this enhancer improves CD8⁺ T cell function.

This Review on the interplay between the immune system and metastasis is part of our wider Series of Reviews on Cancer Immunology and Immunotherapy.

PD-1 is a critical modulator of CD8⁺ T cell activation and exhaustion. Sen and colleagues show that a cell-state-specific enhancer tunes PD-1 expression exclusively in exhaustion and that deletion of this enhancer improves CD8⁺ T cell function.

When monkeys are infected with a virus similar to HIV, treated with antiretroviral therapy (ART), and are administered a ‘combo therapy’ made of antibodies against molecules that inhibit immune responses, they control viral rebound when ART is discontinued for more than 6 months

Liu and colleagues show that a previously described G396R variant of the human IGHG1 gene offers increased protection from SARS-CoV-2 and bacterial infections.

Seder and colleagues show that mucosal adenoviral-vectored vaccine boosting durably prevents infection in nonhuman primates of the highly transmissible, heterologous XBB.1.16 strain of SARS-CoV-2.

Here the authors pull apart the cellular composition of the tumor microenvironment using RNA sequencing data from a wide variety of cancer types. They identify immunity quantitative trait loci and integrate these data with analysis of colorectal cancer cohorts, creating a polygenic risk score and a database for community access.

In this paper and the related paper from Lugli and colleagues the authors show that high levels of NaCl inside the tumor have a beneficial effect on CD8⁺ T cells and their ability to control tumor growth as a result of enhanced T cell receptor activity.

This Comment discusses the explosion in innovative systems biology approaches in infectious disease studies. We outline the numerous challenges associated with these technologies from standardizing data science approaches to reproducibility of findings, as well as cost.