, Gains of OTUB1 and KRAS mutation are mutually exclusive in lung adenocarcinomas. OncoPrint showing the distribution of KRAS somatic mutations and OTUB1 copy number alterations in TCGA lung adenocarcinomas and squamous cell carcinomas obtained from cBioPortal (Cerami et al, 2012; Gao et al, 2013). Co-occurrence analysis showing significant mutual exclusivity between KRAS mutation and OTUB1 gain. 