APT-β1: To selectively target the TGF-β1 isoform in cancer, Takahashi et al. [448], using the SELEX method, recently developed a high affinity and specificity RNA aptamer (named APT-β1) targeting active human TGF-β1 but not TGF-βs 2 and 3. This evidence concerns the gene TGFB1 and cancer.