"Grey's Anatomy" alum Eric Dane is a true fighter.

The "Euphoria" star traveled to Washington, DC, amid his ongoing battle with amyotrophic lateral sclerosis following his diagnosis earlier this year. He met with the I AM ALS organization and Rep. Eric Swalwell, D-California, who on TikTok shared footage of the actor's determination to keep going.

"I want to ring every bell," Dane said. "I have two daughters at home. I want to see them graduate college, get married, maybe even have grandkids. You know I want to be there for all that so I'm going to fight until the last breath on this one."

Dane is the father of daughters Beatrice, 15, and Georgia Geraldine, 13, whom he co-parents with his wife and fellow actor Rebecca Gayheart.

The 52-year-old actor, known for playing Dr. Mark Sloan aka McSteamy on the ABC medical drama, also talked about how it often takes a while for ALS patients to be diagnosed, making it harder for them to get treatment.

"ALS is the last thing they want to diagnose anybody with. So often it takes all this time for people to be diagnosed well, then it precludes them from being a part of these clinical trials," he said.

Since revealing his diagnosis in April, Dane has sought to bring attention to the disorder, also known as Lou Gehrig's disease.

On June 23, he spoke at U.S. Health Secretary Robert F. Kennedy Jr.'s hearing to discuss the plan by several health insurance companies to simplify and reduce prior authorizations. Companies like UnitedHealthcare and Kaiser Permanente said they planned to streamline the common process of vetting requests before allowing doctors to bill for medical services or prescriptions over the next year and a half.

"Some of you may know from TV shows such as 'Grey's Anatomy', in which I play a doctor, but I am here today to speak briefly as a patient," he said at the time. "When that diagnosis hits and you find out that you're sick, your life becomes filled with great uncertainty. And the worst thing we could do is add even more uncertainty for patients and their loved ones with unnecessary prior authorization."

Throughout his battle, Dane has found support in friends and family, including Gayheart, his wife of more than 20 years, who, in April, hinted to E! that the two were no longer romantically involved as they co-parent their children.

"We're definitely dealing with something that has brought us all together, and Eric will always be my family, whether we're married or not, or living in the same house or not," she told People on Sept. 26. "It's a horrible disease, and I wish that there was a cure. I hope they find one soon, because it is just so sad."

In 2018, Gayheart filed for divorce from Dane following 14 years of marriage, but dismissed the case in March of this year, E! and People reported.

"I talk to her every day," Dane told Diane Sawyer in an interview released June 16. "And she is probably my biggest champion, my most stalwart supporter, and I lean on her."

Contributing: KiMi Robinson and Taijuan Moorman, USA TODAY

This article originally appeared on USA TODAY: Eric Dane vows to fight ALS battle 'until the last breath' for his daughters

Reporting by Anthony Robledo, USA TODAY / USA TODAY

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