Question to the Department of Health and Social Care:

To ask the Secretary of State for Health and Social Care, how many adults are participating in Government-funded clinical trials on treatments for (a) brain cancer, (b) leukaemia, (c) breast cancer and (d) prostate cancer.

The information is not held in the format requested. The Department funds research through the National Institute for Health Research (NIHR). The NIHR does not record the age of participants in clinical trial therefore the number of adults in these trials is not held.

However, the following table shows all participants in clinical trials for treatments for brain, breast and prostate cancers either supported or funded by the NIHR since April 2019. Information on trials for leukaemia treatments is not available in the format requested.