Immunohistochemistry was done on 10 cHL (5 nodular sclerosis and 5 mixed cellularity) cases with membranous HLA class I expression in Hodgkin Reed-Sternberg cells [35] and with homozygosity of the minor (n = 5) or major (n = 5) allele of the ERAP2 NMD SNP. Here, ERAP2 is linked to Hodgkins lymphoma.