EIF1AX and uveal melanoma: An additional motivation for better stratification of UM is based on the suboptimal efficiency of monosomy 3 (M3), which has for long been considered as the best biomarker for uveal melanoma stratification.3 A gene expression profile (GEP)‐based test identified two better subclasses of tumors: the class 1‐GEP, with genes associated to EIF1AX mutations, and the class 2‐GEP, linked to BAP1and a poorer outcome.3, 22