SSPOP and neoplasm: In the tumour tissue, we detected homozygous somatic small indels causing the frameshift in five genes—EI24, ALG1L2, TIGD6, GPATCH4 and SSPO. None of these genes have previously been associated to OS, and according to our RNA-seq data, only EI24 of these five genes has altered mRNA expression—it has decreased in the tumour tissue [10], which could be due to the insertion in exon 9.