David Cook has lost his 36-year-old brother Adam to a brain tumor, David announced over the weekend.
Following is the report from Usmagazine.com

David Cook’s 36-year-old brother Adam has died, the ‘American Idol’ winner told the crowd at the 12th Annual Race for Hope 5K event in Washington, D.C, Usmagazine.com reports.
“I actually lost my brother yesterday to a brain tumor, and I couldn’t imagine being anywhere else right now,” the singer said at the fundraiser for brain cancer research. The elder Cook battled the tumor for 11 years.
“I lost one today, but I gained 9,000, and I will be here every year that they will have me,” he added.
Cook was the honorary chairman for the event, and his team raised more than $97,000.
‘American Idol’ judges have rallied around last season’s winner, offering their sympathy and condolences.
“Adam Cook was a part of our extended ‘American Idol’ family who supported his brother wholeheartedly, even through his own fight. My heart goes out not only to David, but his family as well,” Paula Abdul told PEOPLE in a statement.
“I was incredibly saddened to hear the news. I met Adam Cook a few times at ‘American Idol.’ He was an incredible guy, and right now my thoughts are with David and his family,” Simon Cowell added.

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David recently canceled one of his tour concert stops for a “personal” matter. Cook’s brother was an inspiration to him during his run on A-I a year ago. And anyone who watched any of those shows and saw the interaction between David and his brother can realize what David went through the past year.
Like Simon, our thoughts and prayers are with David and his family now.

Here is David’s statement from his website:

I wanted to write everyone and say a few things, in light of recent events, to dispel any misinformation that may be circulating and to say thank you on behalf of my family and myself to everyone who has shown even the slightest bit of support to us and our efforts as a family to help eradicate this terrible affliction.

My brother, Adam, passed away at 11:52pm Eastern, May 2nd. He was 37 years old and leaves behind his wife and two children. We had played Sunfest in West Palm Beach that night, walking off stage at approximately 11:00pm Eastern, and I rushed to get on a plane to fly to Washington D.C., to be a part of the Race For Hope-D.C., a fundraiser for research and development of a cure for brain cancer. I learned of Adam’s passing upon getting to my hotel around 3:00am Eastern. I decided to run in the race, despite all of this, for two reasons. First, my brother never wanted his illness to affect others. That was evident in the fact that he wanted his illness to have no part in my experience on Idol, a point he was quite adamant about. So, with that wish in mind, I ran and was involved with the event as an homage to him. Secondly, there are many people who are still battling, and by running and sharing my brother’s story, I hope that it offers those still fighting that much more resolve to not succumb to this wretched disease.