Shellenberger was diagnosed in May 2008 with rare form of brain tumor, a malignant glioma. He underwent radiation and chemotherapy treatments at the Cedars-Sinai Maxine Dunitz Neurosurgical Institute in Los Angeles.
According to the group's publicist Ken Phillips, Shellenberger was a founding member of the group along with brothers Jeremy and A. Jay Popoff and bassist Kevin Baldes.
This year marks the 10th anniversary of Lit's platinum-selling album A Place in the Sun," which spawned the inescapable MTV and radio hits My Own Worst Enemy," Miserable" and Zip-lock" and led to the band appearing at Woodstock '99.
The band issued the following statement Friday.
To know Al was to know laughter. He had a heart of gold and would do anything for anyone. Words cannot begin to express how much he will be missed. This was our brother and not a day will go by that we won't think about him. Right now we're trying to find the balance of mourning his loss and celebrating his life. Allen has experienced more in his 39 years than most people dream of in ten lifetimes. This is a tremendous loss for us, our fans, and also for Allen's family who took such great care of him during his battle with cancer."
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