The IDIDH1-2 + R140X kit is a ready-to-use multiplex assay for the detection and quantification by digital PCR of mutations in the IDH1 (Isocitrate DeHydrogenase (NADP(+)) 1, cytosolic) and IDH2 (Isocitrate DeHydrogenase (NADP(+)) 2, mitochondrial) genes, including variants in the R140X region.