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A trial of custirsen with cabazitaxel and prednisolone for prostate cancer that has spread (AFFINITY)
This trial looked at custirsen with cabazitaxel and prednisolone for men who had prostate cancer that had spread and other treatments were no longer working.
More about this trial
Cabazitaxel is a chemotherapy drug that doctors sometimes use to treat prostate cancer. In this trial, researchers looked at a type of targeted cancer drug called custirsen (OGX-011) with cabazitaxel and a steroid called prednisolone.
The aim of the trial was to see if the combination of custirsen, cabazitaxel and prednisolone is a useful treatment for men in this situation.
Summary of results
This trial showed that custirsen, cabazitaxel and prednisolone was not better than cabazitaxel and prednisolone for prostate cancer that had spread.
This trial recruited over 600 men with prostate cancer. They were put into 1 of 2 treatment groups at random, and:
- half had custirsen, cabazitaxel and prednisolone
- half had cabazitaxel and prednisolone
In 2016 the research team analysed the results to find out how well the treatments worked. They looked at how many people had died so far and found it was similar in both groups:
- 263 out of 317 men (83%) who’d had custirsen, cabazitaxel and prednisolone
- 267 out of 318 men (84%) who’d had cabazitaxel and prednisolone
They looked at how long the men taking part lived for, and found that was also similar in both groups:
- 14.1 months for those who had custirsen, cabazitaxel and prednisolone
- 13.4 months for those who had cabazitaxel and prednisolone
More than 9 out of 10 men taking part had side effects, but some were mild or short lived. Some had side effects that were more serious:
- 155 out of 315 men (49%) who had custirsen, cabazitaxel and prednisolone
- 132 out of 312 men (42%) who had cabazitaxel and prednisolone
The most common side effects were a drop in white blood cells and red blood cells, tiredness or lack of energy and bone plain.
The research team concluded that custirsen did not help men with prostate cancer that had spread live longer. They suggest that cabazitaxel and prednisolone is used for men who have already had hormone therapy and docetaxel chemotherapy.
We have based this summary on information from the research team. The information they sent us has been reviewed by independent specialists (
How to join a clinical trial
Experimental Cancer Medicine Centre (ECMC)
NIHR Clinical Research Network: Cancer
OncoGenex Pharmaceuticals, Inc