Prevalence of High Tumor Mutational Burden Among Pediatric Patients With Solid Tumors.
High tumor mutational burden (TMB-H), defined as ≥10 non-driver somatic mutations per mega base of genome sequenced (mut/Mb), and high microsatellite instability (MSI-H), which can lead to TMB-H, are both associated with response to the immunotherapy pembrolizumab. Data from the KEYNOTE-158 study demonstrated that the...