STUDIO CITY ( — Sammy Hagar’s drummer is on a mission to make an experimental cancer treatment available for his wife.

“I’m torn between being angry and really sad every day,” David Lauser said.

READ MORE: Montecito Heights Brush Fire Contained By Firefighters

Eight months ago, Liza Cozad Lauser was diagnosed with a rare brain stem tumor that has impaired her eyesight, speech and movement.

“They said it was inoperable and they said there is no cure. I mean, what do you do?” Liza said.

David found out about the news when he was touring with Hagar. When he got back home, the couple discovered an alternative drug called ANP, or antineoplaston therapy, described as synthetic chemicals that protect the body from disease.

After two phases of FDA-approved testing, however, the agency halted its use in part over concerns over how the research was conducted.

READ MORE: "Delta Is Very Serious" Tarzana Doctor Warns Delta Variant Is Bringing More COVID Patients Than He Can Count

The Lausers say they have nothing to lose.

“It’s so frustrating and it’s maddening to think there’s something that could help her,” David said.

The couple posted an online video pleading for signatures on to convince the FDA to allow the ANP therapy.

“Why would you withhold something that would give her a chance?” David said.

Liza is currently undergoing radiation treatment, but doctors say it is not a cure.

MORE NEWS: Heavy Rains Trigger Mudslide In El Dorado Burn Scar Near Big Bear

“I just have to keep looking forward and just keep thinking that it can happen and going towards that,” Liza said.