Although recent reports have suggested that genes in the 9p24.1 locus (including CD274, JAK2, and PCD1LG2 genes) were more frequently amplified in RCC tumors with sarcomatoid features6,17, we did not observe focal amplifications to be enriched at this locus in these cohorts (Supplementary Data 2). Here, JAK2 is linked to renal cell carcinoma.