Family friends have arranged fundraisers to help pay for cancer treatments for two Bettendorf siblings who are battling cancer.

Bryce Boettcher, 15, was diagnosed with acute lymphocytic leukemia in November after several lumps were found near his ears. In February, his sister Judy, 17, was diagnosed with thyroid cancer after taking a physical to become a bone-marrow donor for Bryce.

The reason or cause of the cancers have yet to be determined, and the family plans to participate in a genetic study to see if it is a hereditary issue.

A silent auction will be held at 5 p.m. Saturday at Starlite Ballroom at Mississippi Valley Fairgrounds, 815 W. Locust St., Davenport. A cash bar and DJ will be on hand, and food will be provided. Admission is $10 and auction winners will be announced at 8:30 p.m.

Auction items include a tour of E! Entertainment Studios with Ryan Seacrest, a signed guitar by Martina McBride, an Iowa Hawkeye football helmet signed by Chat Greenway, Abdul Hodge, Kirk Ferentz and Norm Parker, a football signed by Hawkeye football players and a basketball signed by Hawkeye basketball players. All proceeds will go toward the teens’ upcoming medical expenses and anything leftover will be donated to the Children’s Hospital of Iowa, Peggi Boettcher said.

National Bank locations in the Quad-Cities are accepting donations to the Boettcher fund.

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The teens’ father Mark Boettcher said the outpouring of support from friends, school officials and acquaintances has been great.

“You get a lot phone calls and e-mails,” he said. “It’s something that you don’t expect.”