Social media star Sydney Towle died at 26. She helped define a new generation of young cancer influencers.

Sydney Towle, 26, died on August 5 from a rare, aggressive cancer.

One day later, her brother, Austin Towle, and mother, Elizabeth Morrow, shared a few words to her 1.1 million TikTok followers.

“We thank all of you for your support over the years,” Austin Towle said, with Morrow echoing the sentiment.

At 23, Sydney Towle was diagnosed with cholangiocarcinoma, a bile duct cancer, after seeing a doctor for what she initially thought was a hernia.

For years, Towle documented the ups and downs of her treatments, including her surgeries, scans, chemotherapy, and clinical trials. She also shared her happier moments, from trips with her friends to…