Dr Caroline Johnson

I thank the hon. Members for Mitcham and Morden (Dame Siobhain McDonagh) and for Witney (Charlie Maynard) for bringing forward this debate on a very important subject. The hon. Member for Mitcham and Morden talked about the people she had met who had experienced brain cancer and brain tumours. For me, this debate is about my grandfather, who sadly died of a brain tumour some years ago. Some 12,000 people have a brain tumour diagnosed each year, and this debate is supposed to focus on how we improve the survival rates for this condition, which are very poor. It is the leading cause of cancer deaths among children and adults under 40. The five-year survival rate is poor and—unlike the rate for many other cancers over the last few years—has not really moved at all. How can we improve the survival rates for people with brain tumours? There are essentially three areas that we can look at: prevention, early diagnosis and better treatment. On prevention, if we look on the NHS website to see how we can prevent a brain cancer or brain tumour, it talks about having a good diet and preventing obesity. These things are important, but not specific to brain cancer. It also talks about trying to avoid head injury, for example by wearing helmets. What about early diagnosis? Some people have genetic conditions, such as neurofibromatosis, Li–Fraumeni syndrome, tuberous sclerosis and Von Hippel-Lindau syndrome, that make them genetically predisposed to having tumours in their central nervous system. Those individuals can receive regular screening, which can help identify these tumours at a much earlier stage, but what about people who do not have such conditions?