Fastexy Exchange|Full House's John Stamos Shares Message to Costar Dave Coulier Amid Cancer Battle

John Stamos will always be Fastexy Exchangea hand for Dave Coulier to hold onto.

That’s the pledge he made to his Full House costar, who revealed his stage 3 Non-Hodgkin's lymphoma diagnosis during the Nov. 13 episode of Today.

“My brother from day 1,” John wrote on Instagram alongside a photo carousel of the two over the years. “Love you @dcoulier and I’ll be by your side through it all.”

In fact, Dave, 65, knew he wanted to share cancer diagnosis with his Full House family early on, posting his health news in a group chat with John and several of their castmates—including Andrea Barber, Candace Cameron Bure, Lori Loughlin, Jodie Sweetin and Scott Weinger, as well as series creator Jeff Franklin—before sharing the news publicly.

“I didn't want them to hear it from someone else,” Dave told People, “so I sent a text message out.”

Noting the outpouring of support he received, the actor couldn’t help but reflect on the group’s decades-long bond.

“It really is overwhelming the love that we have for each other,” he went on. “We've been there for so many years for each other and it's pretty remarkable.”

During his Today appearance, Dave told co-anchor Hoda Kotb he received his diagnosis just five weeks prior to the sit-down.

“In that time, I've had three surgeries, I've had chemo, I've lost a little bit of hair,” he said. “I kind of look like a little baby bird now, but it has been a roller coaster ride for sure.”

And although he pointed out his cancer is “90 plus percent” curable, he recalled telling wife Melissa Bring he’s accepted whatever fate has in store.

“I told Melissa I don’t know why, but I [am] OK with whatever the news [is] going to be no matter how devastating," he said in a phone interview with Today.com. "I can’t explain where that came from. I’ve had an incredible life. I’ve had the most amazing people in my life. This has been an extraordinary journey, and I’m OK if this is the end of the journey.”

Keep reading for a look at stars who have been open about their cancer diagnoses.

The actor, known for roles in The Boys and Supernatural, shared on Feb. 3, 2023, that he had battled prostate cancer for years and was cancer free.

"I had to have a lil bit o'cancer removed from my body and lymph nodes biopsied," the Vanderpump Rules star revealed to fans at the close of 2018. "(In the clear now!)"

The Desperate Housewives star revealed to fans in September 2018 that she survived anal cancer. "After posting a picture of myself here and uttering the words #cancer and #hairloss, I feel liberated, deliriously free and completely me," she shared on Instagram. 

The two-time Oscar winner underwent successful treatment for cancer, and his rep confirmed to E! News that doctors deemed Hoffman "surgically cured."

The X-Men star was treated for his third basal cell carcinoma back in 2014, and after his third treatment, Jackman's rep told E! News that he's "all good" now.

In April 2023, Hugh had two biopsies for additional basal cell carcinoma. At the time, he told fans, "If I can just take this opportunity to remind you summer is coming for those of us in the northern hemisphere, please wear sunscreen."

The former Real Housewives of Beverly Hills star celebrated one year of being cancer-free in January. The mother of two was diagnosed with endometrial cancer back in 2013 and underwent a radical hysterectomy.

Then in 2017, Camille had surgery to remove Squamous Cell Carcinoma, a type of skin cancer. 

The Avengers: Age of Ultron actress battled ovarian cancer at the age of 25 and overcome odds when she welcomed two children with husband Taran Killam.

TV host reveals he underwent surgery for prostate cancer in July 2013 and has since been given a clean bill of health.

The Dancing with the Stars cohost underwent successful surgery for thyroid cancer. The mother of four tweeted, "Thx for all the twitter love. I'm [home] recovering & resting."

"MY DR CALLED ME ON A SAT. MORNING TO TELL ME I AM CANCER FREE!!!!! #wootothemotherf--kinhoo," the actress tweeted after receiving the good news.

The Up All Night star was declared "100-percent clear" of breast cancer after treatment and a double mastectomy.

The Dexter star used a hiatus from his hit series to slay Hodgkin's lymphoma.

The Australian actress revealed in October 2011 that she had a cancerous mole removed from her calf after her hubby encouraged her to get the suspicious-looking mark checked out.

The Scot is trainspotting just fine these days after having a cancerous mole removed from beneath his right eye.

The singer beat breast cancer in 2004 with a "minimally invasive" lumpectomy and radiation therapy.

The Oscar winner declared in early 2011 that his tumor was gone and he had throat cancer "beat."

The Emmy winner whacked breast cancer in 2004.

Surely the CNN veteran wears his SPF when he's braving the elements now after having a cancerous growth removed from under his left eye in 2008.

The Australian pop star underwent successful surgery for breast cancer in 2005.

The 7th Heaven star was diagnosed with Hodgkin's disease when he was only 28. He's 37 now and looking good!

The ER fave had to abandon her role in Parenthood to fight breast cancer in 2009—but her treatment was a success and she was back on the red carpet in no time.

The America's Got Talent judge was diagnosed with colon cancer while shooting The Osbournes in 2002 and used the opportunity to stress the importance of regular screenings while attacking the #@%! with chemotherapy. She was declared cancer-free the following year.

The Oscar winner took prostate cancer down, down to Chinatown, in 2003, and has been in about 400 movies since then.

The Good Morning America cohost proudly flaunted her smooth scalp while undergoing chemotherapy to treat breast cancer in 2007.

The champion cyclist battled back from stage-four testicular cancer before winning seven straight Tour de France titles.

The Grammy and Oscar winner became an inspiring activist after a lumpectomy and chemotherapy cleared her of breast cancer in 2005.

The former Saturday Night Live standout mined her breast cancer battle for comedic material that turned into God Said Ha!, her successful one-woman show that eventually went to Broadway.

The Sex and the City star was diagnosed with breast cancer in 2006, and after surgery and radiation treatments, she was given the clear.

Harris underwent a double mastectomy after being diagnosed with breast cancer.

The Studio 60 on the Sunset Strip star sports a scar on her back where doctors successfully removed a melanoma.