David A. Barbie, MD, on Mesothelioma: Activating the STING Pathway May Promote Antitumor Immunity
AACR Annual Meeting 2022
David A. Barbie, MD, of Dana-Farber Cancer Institute, discusses his laboratory’s studies, showing that malignant pleural mesothelioma, an inflamed cancer type with marginal response to immune checkpoint blockade, demonstrated high tumor cell STING expression and response to STING agonists in combination with natural killer cell therapies ex vivo. STING is the tumor cell stimulator of interferon genes (Abstract 4168).
The ASCO Post Staff
Maria Elena Martinez, PhD, MPH, of the University of California, San Diego Moores Cancer Center, provides an overview of the key components of the Accelerating Colorectal Cancer Screening and Follow-up through Implementation Science program, challenges posed by the COVID-19 pandemic, and opportunities for overcoming these challenges. Although screening and follow-up may reduce the incidence of and mortality from colorectal cancer, these disparities persist in medically underserved populations (Abstract SY30).
The ASCO Post Staff
Alana L. Welm, PhD, of the University of Utah Huntsman Cancer Institute, discusses her findings of a new pathway that regulates the antitumor immune response during metastatic outgrowth. Interfering with a particular isoform of RON kinase may cause metastatic tumors to be swarmed by T cells and killed, suggesting that new approaches to targeting this kinase may be achievable in the near future (Abstract SY32).
The ASCO Post Staff
Ari M. VanderWalde, MD, MPH, MBioeth, of The West Clinic, discusses results from the S1616 trial involving patients with metastatic or unresectable melanoma who had primary resistance to PD-1 or PD-L1 inhibitors. Compared with ipilimumab alone, the combination of ipilimumab plus nivolumab benefited some patients: those with tumors that responded to therapy showed an increased amount of CD8+ cells. Because there is no standard treatment for metastatic melanoma after failure of PD-1 inhibitors in BRAF wild-type disease, this research may provide a viable option in the future (Abstract CT013).
The ASCO Post Staff
Priscilla K. Brastianos, MD, of Harvard Medical School and Massachusetts General Hospital, talks about her efforts to better understand how brain metastases evolve genomically and to test such agents as abemaciclib, paxalisib, and entrectinib, which may stop their growth. Palbociclib, a CDK inhibitor, has already shown potential benefit. A national cooperative group trial is underway in multiple centers to identify novel treatments for patients with brain metastases, who typically have a poor prognosis (Abstract SY38).
The ASCO Post Staff
Timothy A. Yap, MBBS, PhD, of The University of Texas MD Anderson Cancer Center, discusses results from a phase Ib expansion trial of the safety and efficacy of the oral ataxia telangiectasia and Rad3-related (ATR) inhibitor elimusertib in advanced solid tumors with DNA damage response defects. Elimusertib is a selective inhibitor of ATR, a key regulator of responses to DNA damage and replication stress, with antitumor activity in preclinical models of various solid tumors and lymphoma (Abstract CT006).
