Lupus is a chronic disease that can cause debilitating inflammation and pain in any part of the body, when the immune system attacks the healthy tissues. Treatment so far has been toxic, but Professor Fabienne Mackay, Director at QIMR Berghofer is behind the first new treatment for lupus in 50 years. She talks about how the discovery was made and what it will mean for the 5-million people who live with Lupus around the world.