The 39-year-old admires his brother's bravery in dealing with the illness, reported Contactmusic.
"When you know what cancer means, you do anything to help. In the past, I have done a lot for charity and now it's time for all those people in the industry that I have helped to help me out," Andre said.
The 'I Can't Make You Love Me' hitmaker is hosting the Crystal Ball event in September and setting up his own foundation by the year end.