Cornelis van de Velde, MD, PhD, of Leiden University Medical Center, discusses the International Watch & Wait database, established to track evidence on organ-preserving strategies in patients with rectal cancer (Abstract 521).
Julien Edeline, MD, of the Centre Eugène Marquis, discusses study findings on gemcitabine and oxaliplatin vs surveillance following surgery for localized biliary tract cancer (Abstract 225).
Cynthia L. Sears, MD, of Johns Hopkins University School of Medicine, summarizes her keynote talk on microbes, microbiota, and colon cancer. Next-generation sequencing combined with biologic studies suggests that most colorectal cancer cases have specific microbiome associations.
Michael J. Overman, MD, of The University of Texas MD Anderson Cancer Center, discusses study findings on nivolumab alone or in combination with ipilimumab in patients with DNA mismatch repair–deficient/microsatellite instability high metastatic colorectal cancer (Abstract 519).
Cathy Eng, MD, of The University of Texas MD Anderson Cancer Center, discusses management approaches to anal cancer, including the current standard of care, as well as novel approaches for locally advanced and metastatic disease.
Karyn A. Goodman, MD, of the University of Colorado School of Medicine, discusses initial study findings on PET scan–directed combined-modality therapy for esophageal cancer (Abstract 1).
