Reviews & Analysis

In oncology, mRNA–lipid nanoparticles (LNPs) have been used either to achieve intratumoural expression of immune-stimulating cytokine combinations or as cancer vaccines, and new strategies are in development to enable the selective delivery of payloads into cancer cells previously considered unreachable. The authors of this Review present various approaches for delivering mRNA–LNPs to tumours and discuss improvements that will improve the selective targeting of cancer cells with mRNA–LNPs.

Advances over the past decade have established a prominent role of the gut microbiota in the modulation of immune homeostasis and function, including in patients with cancer receiving immune-checkpoint inhibitors. In this Review, the authors summarize current knowledge of the role of the microbiota in this context, describe several methods of modulating the microbiota clinically to improve patient outcomes, and highlight important future directions in this expanding area of research.

Several trials are testing immune-checkpoint inhibitors (ICIs), alone or in combination with chemotherapy, in patients with resectable non-small-cell lung cancer as an adjuvant, neoadjuvant or perioperative approach. However, the optimal use of ICIs with curative intent in patients with early stage non-small-cell lung cancer remains unclear. The authors of this Review discuss the current trial landscape and discuss challenges and opportunities.

Advances in the treatment of childhood cancers have substantially improved cure rates, although the gains in survival are offset by an elevated burden of morbidities and an excess risk of early death owing predominantly to the adverse effects of therapy. In this Review, the authors summarize the evolution of paediatric cancer therapies over the past five decades as well as the associated landscape of treatment-related late and/or long-term health conditions experienced by childhood cancer survivors. In addition, they discuss strategies that are being explored to reduce the overall burden and consequences of these morbidities with the ultimate aim of improving not only the quantity but also the quality of life-years gained for this large, medically vulnerable population.

Lung cancer is the commonest cancer globally. Reflecting patterns of smoking and other risk factor exposures, both the incidence of and mortality from lung cancer are highest in economically developed countries. Nonetheless, developing and less economically developed countries are likely to have the biggest increases in lung cancer in the coming years. In this Review, the authors describe the global epidemiology of lung cancer, and how changes in exposures, socioeconomic status, public health interventions and better treatment strategies are influencing both the incidence of and mortality from lung cancer.

Hotspot point mutations in IDH1 occur in the vast majority of adult grade 2–3 gliomas. The understanding of their role in tumour biology continues to evolve. Therapeutic targeting of mutant IDH1 with vorasidenib demonstrated highly encouraging efficacy and minimal toxicity in a recent, randomized phase III trial involving patients with low-grade gliomas.

Despite advances in drug development for patients with lymphoma over the past decades, the identification of biomarkers for treatment selection remains an unmet need. The authors of this Review provide an overview of quantitative PET-based biomarkers in this patient population and discuss the challenges and opportunities in the integration of these biomarkers in clinical trials and the routine management of patients with lymphoma.

A recent report from the ATLAS trial comparing different maintenance strategies following haematopoeitic stem cell transplantation for multiple myeloma provides an opportunity to explore various themes of critical appraisal, including end points, the equipoise of trial design, and the part censoring can play in the validity of results.

Planning for a pregnancy in patients receiving adjuvant endocrine therapy following a diagnosis of hormone receptor (HR)-positive early stage breast cancer is challenging. Recent data from the POSITIVE trial provide reassuring prospective evidence that a temporary interruption of endocrine therapy for women with HR-positive breast cancer who are trying to conceive can be considered safe in the short term for selected patients.

Many studies attempting to identify biomarkers for predicting of immune-checkpoint inhibitor (ICI) efficacy have led to the description of Gut OncoMicrobiome Signatures (GOMS). Several GOMS support an association between oncogenesis and intestinal dysbiosis, and other GOMS are shared between patients with several cancer subtypes and individuals with seemingly unrelated chronic inflammatory disorders. The authors of this Review discuss these patterns as well as the findings from a meta-analysis of GOMS associated with clinical benefit from ICIs, and propose practical guidelines to incorporate GOMS in decision-making in immuno-oncology.

COSMIC-313 combines all of the approved drugs against actionable targets in renal cell carcinoma into one triplet regimen. Although this approach has greater clinical efficacy than one of the standard-of-care doublet therapies, toxicities can limit adequate drug administration and, thus, we argue that this regimen should not yet be adopted. We also discuss ongoing investigations of other triplet regimens.

Immune-checkpoint inhibitors (ICIs) and other immunotherapies have revolutionized the treatment of patients with cancer. Nonetheless, most patients do not derive durable benefit, indicating a need for biomarkers to guide treatment selection. In this Review, the authors describe the role of antigen presentation in response to ICIs and other immunotherapies, with a focus on the role of molecular and/or genomic alterations affecting antigen presentation.

Advances in technology have enabled the development of several novel antibody–drug conjugates (ADCs) with encouraging clinical activity in patients with advanced-stage solid tumours. Indications for these therapies are expanding rapidly to earlier lines of therapy. Nonetheless, the toxicities of these various agents are not trivial and can be fatal, even in patients with early stage disease. In this Review, the authors summarize the toxicities of ADCs in patients with solid tumours both as monotherapies and in combination with other agents and discuss various ongoing research efforts attempting to optimize the therapeutic index of these agents.

Radiotherapy has several key attributes that make it an attractive combination partner for immunotherapy; however, numerous clinical trials investigating the combination of these two treatment modalities have failed to demonstrate clear improvements in patient outcomes. In this Review, Galluzzi and colleagues discuss the evidence indicating that radiotherapy administered according to standard schedules and target volumes might impair immune fitness and, therefore, propose that adaptation of the radiotherapy regimens to immunotherapy (and not vice versa) might synergistically enhance the antitumour immune response to achieve meaningful clinical benefits.

The authors of this Perspective propose that, with further improvement in detection efficiency, circulating tumour cells (CTCs), which are released early during cancer development, have the potential to be used for the early detection of clinically relevant, aggressive cancers. Thus, use of CTCs as diagnostic biomarkers might improve outcomes by enabling the identification of cancers at a stage at which they are more amenable to treatment while avoiding overtreatment of patients with indolent tumours.

Long-term survival rates of patients with gastric cancer remain low, particularly in Western countries. This lack of progress, among other aspects, is likely to reflect a focus on empirical approaches that fail to account for the heterogeneity of gastric cancers. In this Review, the authors summarize the available evidence on the management of patients with early stage gastric cancers, with an emphasis on understanding the underlying biology in order to improve the outcomes in patients with these historically difficult-to-treat tumours.

The effective management of treatment-related events remains an unmet need in oncology. The authors of this Review discuss the underlying biological mechanisms, risk factors, most commonly used pharmacological and non-pharmacological management strategies, and clinical practice guidelines for the most common long-term (continuing beyond treatment) and late or delayed (following treatment) adverse events associated with chemotherapy and other anticancer treatments.

Dysregulation of N⁶-methyladenosine (m⁶A), the most prevalent internal modification in eukaryotic mRNA, is common in various cancer types. The authors of this Review provide an overview of the mechanisms of m⁶A-dependent RNA regulation, summarize current knowledge of their pathological effects and potential utility as biomarkers in cancer, and describe ongoing efforts to develop small-molecule inhibitors of oncogenic m⁶A modifiers.

Cholangiocarcinoma is a malignancy that continues to be associated with a dismal prognosis, and a better understanding of the disease biology is required to improve early detection and treatment strategies. In this Review, the authors describe key scientific and clinical advances made in this area over the past 5 years, encompassing novel insights into the tumour stroma and immune microenvironment, promising progress in developing liquid biopsy approaches for diagnosis and monitoring, clinical translation of molecularly targeted therapies, emerging immunotherapies and reassessment of the potential role of liver transplantation.

Bispecific T cell engagers offer a novel treatment approach for patients with multiple myeloma, although mechanisms of resistance are largely unknown. Here, we discuss the implications of a recent report from Friedrich et al. that highlights the importance of pre-treatment T cell characteristics for a response to the T cell engager elranatamab and how these data might be used to inform future study and trial design.