Timothy Ray Brown,the 1st person believed to have been cured of AIDS

Timothy Ray Brown, also known as the 'Berlin patient,' says doctors have told him he's 'cured of AIDS and will remain cured.'

Brown's case was a landmark medical advancement that researchers say could pave the way for future treatment of the insidious disease for its 34 million sufferers worldwide.

Brown had a blood stem cell transplant in 2007 to treat leukemia, using a donor with a rare gene mutation that provides natural resistance to HIV. Doctors declared him 'cured' soon after.