Fig. 2From: Traffic lights for retinoids in oncology: molecular markers of retinoid resistance and sensitivity and their use in the management of cancer differentiation therapyGenetic alterations used as predictive biomarkers for APL patients. a Chromosomal translocations between RARA and several fusion partners playing an important role in maintaining resistance/sensitivity of APL patients to retinoids [122]. b Breakpoint cluster regions (bcr) in PML gene resulting in alternative splicing and different therapeutic response to ATRA in APL patients. E5(−)E6(−) isoform of L-type fusion transcript with exons 5 and 6 deleted is associated with the ATRA-resistant phenotypeBack to article page