apatorsen (OGX-427)

In pts with high-risk BCR, enza + ADT and enza mono demonstrated a statistically significant and clinically meaningful improvement in MFS vs pbo + ADT. The safety profile of enza was consistent with results from previous clinical studies.

The Heat Shock Protein 27 (Hsp27) has emerged as a principal factor of the Castration-Resistant Prostate Cancer (CRPC) progression, also, an Antisense Oligonucleotide (ASO) against Hsp27 (OGX-427 or Apatorsen) has been assessed in different clinical trials...We first present the interactions of DDX5 and the Ku70/80 heterodimer and the transcription factor IIH (TFIIH), thereby uncovering DDX5 roles in different DNA repair pathways. Collectively, our study highlights critical functions of DDX5 contributing to CRPC progression and provides preclinical proof-of-concept that a combination of ASO-directed DDX5 inhibition with a DNA damage-inducing therapy can serve as a highly potential novel strategy to treat CRPC.