Stephen Sutton, the British teenager who chronicled his cancer fight on social media with grace and good cheer while raising millions for charity, has died, his family said Wednesday.
The 19-year-old's spirited battle even prompted a visit to his hospital room two weeks ago by British Prime Minister David Cameron.
"My heart is bursting with pride but breaking with pain for my courageous, selfless, inspirational son who passed away peacefully in his sleep in the early hours of this morning," she wrote. "The ongoing support and outpouring of love for Stephen will help greatly at this difficult time, in the same way as it helped Stephen throughout his journey.
"We all know he will never be forgotten, his spirit will live on, in all that he achieved and shared with so many," she added.
In April, Stephen, who was first diagnosed with bowel cancer at age 15 in 2010, weakened so much he tweeted in a "final thumbs up" message that he no longer had the strength to keep up his blog, and was turning it over to his mother.
"There was also so many exciting projects and things I didn't get to see out," he wrote. "Hopefully some will continue and if you want to carry on the fundraising please do."
Stephen rallied briefly and left the hospital, but was readmitted with breathing difficulties on Sunday, the Mail reports.
Stephen, of Burntwood in Staffordshire, England, raised more than £3.2 million ($5.4 million) for the charity aimed at improving the quality of life and chances of survival for young cancer patients ages 13 to 24.
""I'm not afraid of dying, I'm afraid of not cramming as much into my life as I should have done," he told the Mail last year.