Incidence of PRC2 alterations in the GRAALL-2003-2005 studies. (A) The Upset plot indicates the incidence of events observed for each PRC2 gene and the different cooccurrences. The right panel indicates the type of genetic alterations and their frequencies. (B) Lollipop plots indicating the observed mutations for each PRC2 gene and their consequences. (C) The red bars map the observed chromosomal deletions involving the PRC2 genes in the GRAALL-2003-2005 studies.