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
Iván Márquez-Rodas, MD, PhD, of Spain’s Hospital General Universitario Gregorio Marañón, discusses final results of the phase II SPOTLIGHT203 study of systemic pembrolizumab in combination with intratumoral BO-112 for patients with advanced melanoma refractory to anti–PD-1–based therapy. The regimen achieved an overall response rate of 25% and a disease control rate of 65% (Abstract CT014).
The ASCO Post Staff
Klaus Pantel, MD, of the University Medical Center Hamburg-Eppendorf, discusses liquid biopsy technologies and biomarkers, with a focus on circulating tumor cells and circulating tumor DNA; clinical applications such as early detection of cancer, improved staging, and surveillance of measurable residual disease; and how best to detect and monitor response to systemic therapies, as well as ways to identify therapeutic targets and resistance mechanisms (Abstract SY08).
The ASCO Post Staff
Electra D. Paskett, PhD, of The Ohio State University, discusses various factors that may contribute to cancer such as socioeconomic status, discrimination, violence, and access to health care. When clinicians identify these factors and intervene with access to services, it may be possible to improve outcomes for their patients (Abstract SY33).
The ASCO Post Staff
Silvia C. Formenti, MD, of Weill Cornell Medicine, discusses research on the best way to integrate radiotherapy with immune modifiers, which might require changes in standard radiation oncology practices. Variables such as the type of treatment fields, the inclusion of draining nodal stations, the degree of exposure of circulating immune cells, the type of dose fractionation, and the timing of radiotherapy during immune checkpoint blockade all can affect the success of immunoradiotherapy combinations (Abstract SY43).
The ASCO Post Staff
Timothy A. Yap, MBBS, PhD, of The University of Texas MD Anderson Cancer Center, discusses how research is building on the success of first-generation PARP inhibitors in the clinic and the potential of novel potent PARP1-selective inhibitors, which may lead to improved patient outcomes. Given recent advances in drug discovery, says Dr. Yap, we now can go beyond PARP by drugging other key DNA damage response targets in the clinic, including ATR, WEE1, DNA-PK, RAD51, POLQ, and USP1.
