A PARP inhibitor with the potential for treating certain types of prostate cancer

What is Rubraca?

Rubraca is a PARP inhibitor which has currently been approved in the UK for ovarian cancer.

Who is developing Rubraca?

Rubraca was developed by the pharmaceutical company Clovis Oncology which specialises in cancer.

What have Clovis discovered so far?

In the USA Clovis found that about half of prostate cancer patients on a Phase 2 trial who took Rubraca had their tumour shrink and/or their PSA levels decline. Based on this, the USA granted ‘accelerated approval’. This means that patients in the USA can take Rubraca if they have advanced prostate cancer which has spread outside the prostate, have genetic variants of BRCA genes and have already received both chemotherapy and at least one hormone therapy, such as abiraterone (Zytiga) or enzalutamide (Xtandi)

At what stage of development is Rubraca?

Rubraca is currently being studied in a phase 3 clinical trial. Despite the accelerated approval in the USA, it is likely that this phase 3 clinical trial will need to be completed (due to end in mid 2022) and a positive outcome confirmed in the trial before Rubraca can be considered for approval in prostate cancer in the UK.

To find out more about the typical timescales involved in developing new drugs and more information about clinical trials please click here.

How can I find out more?

You can find out more on the Clovis Oncology website here.

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