A study to learn more about how the Epstein Barr virus affects immune system cells and may help to cause cancer

This study will look at blood and tissue samples from people with and without a condition linked to a virus called the Epstein Barr virus (EBV).

The Epstein Barr virus is a common virus that most adults carry without noticing any effects. It usually infects cells of the immune system called B cells. But in some rare cases, the EB virus can infect other immune system cells called T cells and natural killer (NK) cells. This can cause rare types of lymphomas and leukaemias, including a non Hodgkin lymphoma which develops outside the lymphatic system (extra nodal), and a leukaemia called ‘aggressive natural killer cell leukaemia’.