The pedigree of the Finnish family with 3 siblings affected by PMBCL and their cousin with extranodal DLBCL. The age of lymphoma onset is shown for all affected individuals. The MLL 5533C>A mutation status is shown for all studied family members: plus indicates mutation, and minus indicates the wild-type allele. Genome-wide genotype data were available from individuals marked with an asterisk. The pedigree has been modified for confidentiality.