Bryce Vaysberg’s friends and family want to make sure every one of the expected 20,000 people at Israel in the Gardens knows about the national bone marrow drive taking place at the June 5 event. The 13-year-old’s life may depend on it.

The San Mateo teenager has a rare bone marrow disease and is seeking a donor match. Successful bone marrow matches usually are made between donors and patients of the same ethnic background.

The Vaysbergs, who belong to Peninsula Temple Sholom in Burlingame, have partnered with the national marrow donor program Be the Match Foundation. Potential donors who sign up can get tested at home for free with a swab kit and become part of the national registry.

For more information, call (510) 301-9512 or visit ßåßjoin.bethematch.org/4bryce or www.sfjcf. org/gardens/2011/pages/btfb.htm.