The late “Full House” star was a tireless supporter and fundraiser for the Scleroderma Research Foundation, hosting their signing for 30 years … but now that he’s gone, the comedy show is turning into a special tribute to Bob. SRF tells TMZ that a trio of Bob’s celebrities are the new hosts for “Cool Comedy • Hot Cuisine” … with Jeff Ross, John Mayer and Jimmy Kimmel taking over for Bob. The fundraiser, which costs at least $500 to attend, will pay tribute to Bob and also feature comedy appearances from Nikki Glaser, Regina Hall, Howie Mandel, Joel McHale, Kevin Nealon and John Stamos, to name just a few. Under Bob’s direction, the annual show has raised over $25 million for vital research to find a cure for scleroderma, a group of rare diseases that involve hardening of the skin and connective tissues. Bob’s sister, Gay, died of the disease in 1994 when he was just 47, and he has been involved with SRF through “Cool Comedy • Hot Cuisine” since 1991, as an attendee, performer, host and producer. Play video content Remember… Jeff and John were very close to Bob, even braving LA traffic to pick up Saget’s car from the airport, the way they remember their late friend. In addition to spearheading SRF’s big event, Bob also took time out over the years to reach out to families suffering from the disease to offer comfort and support. The event will wrap up on September 21st at the Beverly Wilshire Hotel … and Jeff says Bob’s show must go on until they find a cure.