White blood cell and cell-free DNA analyses for detection of residual disease in gastric cancer

• DOI: 10.1038/s41467-020-14310-3
• Publication Date: 2020-01-27T11:03:17Z
• Authors: Alessandro Leal; Nicole C. T. van ...; Doreen N. Palsgrove; Jillian Phallen; Jamie E. Medina; Carolyn Hruban; Mark A. M. Broeck...; Valsamo Anagnostou; Vilmos Adleff; Daniel C. Bruhm; Jenna V. Canzoniero; Jacob Fiksel; Marianne Nordsmark; Fabienne A. R. M....; Henk M. W. Verheul; Dick Johan van Sp...; Laurens V. Beerepoot; Maud M. Geenen; Johanneke E. A. P...; Edwin P. M. Jansen; Johanna van Sandick; Elma Meershoek-Kl...; Hanneke W. M. van...; Donald L. van der...; Cornelis J. H. va...; Marcel Verheij; Remond Fijneman; Robert B. Scharpf; Gerrit A. Meijer; Annemieke Cats; Victor E. Velculescu
• Keywords: 0301 basic medicine; CARCINOMA; SURGERY; Science; Radboud University Medical Center; Proof of Concept Study; Article; 03 medical and health sciences; LUNG-CANCER; Stomach Neoplasms; REGRESSION; Leukocytes; Humans; Medical Oncology - Radboud University Medical Center; Haematology - Radboud University Medical Center; Randomized Controlled Trials as Topic; PLASMA; Q; CIRCULATING TUMOR DNA; CLONAL HEMATOPOIESIS; Radboudumc 9: Rare cancers RIHS: Radboud Institute for Health Sciences; DNA, Neoplasm; Sequence Analysis, DNA; CHEMOTHERAPY; Radboudumc 14: Tumours of the digestive tract RIHS: Radboud Institute for Health Sciences; Prognosis; Survival Analysis; Hematopoiesis; 3. Good health; Radiation Oncology - Radboud University Medical Center; SURVIVAL; Neoplasm Recurrence, Local; Cell-Free Nucleic Acids; ACQUIRED-RESISTANCE

AbstractLiquid biopsies are providing new opportunities for detection of residual disease in cell-free DNA (cfDNA) after surgery but may be confounded through identification of alterations arising from clonal hematopoiesis. Here, we identify circulating tumor-derived DNA (ctDNA) alterations through ultrasensitive targeted sequencing analyses of matched cfDNA and white blood cells from the same patient. We apply this approach to analyze samples from patients in the CRITICS trial, a phase III randomized controlled study of perioperative treatment in patients with operable gastric cancer. After filtering alterations from matched white blood cells, the presence of ctDNA predicts recurrence when analyzed within nine weeks after preoperative treatment and after surgery in patients eligible for multimodal treatment. These analyses provide a facile method for distinguishing ctDNA from other cfDNA alterations and highlight the utility of ctDNA as a predictive biomarker of patient outcome to perioperative cancer therapy and surgical resection in patients with gastric cancer.