PIK3CA and neoplasm: Foundation one genetic testing was performed and revealed microsatellite (MS)-stability, tumor mutational burden of 10 mutations per megabase, amplification in AKT3, IKBKE, MDM4, PIK3C2B, and RAD21; mutations in CDC73 (W43) and PIK3CA (E453del, C420R); and EED (NM_003797) rearrangement in exon 9.