Father of three Nick Auden is battling stage 4 melanoma. He believes that gaining access to a trial of Merck's and Bristol-Myers Squibb’s immune-boosting anti-PD-1 cancer drug could shrink his tumors for good and give him a chance to survive. Without access, his cancer will most likely be terminal.

"Some people survive, 90-odd percent don't," said Auden. "There's no doubt that was tough news. I had trouble not being emotional about it every time I thought of the concept of not being there to watch the kids grow up."

According to ABC News, Auden was initially admitted into a clinical trial in July, but was disqualified from participating when he suffered a medical complication. Without the trial, Auden’s doctor said that he would have between six and nine months to live.

Auden started the Save Locky’s Dad campaign in hopes of getting enough people to sign a petition asking Merck and Bristol-Myers Squibb to give him access to the breakthrough drug. The new drug is showing positive results for patients with stage 4 melanoma. And, although the companies are working hard to get the PD-1 drugs approved, they probably won’t gain commercial availability for another 12 to 18 months.

“I want my dad to get the PD-1 drug because then I can do the things I like to do with him all the time," Auden’s 7-year-old son Locky said.

Auden has already received about 25,000 signatures on his petition. He has also gotten a boost from celebrities like Ricky Gervais and Sarah Silverman, who both shared the petition on social media.

You can watch the video explaining Auden’s remarkable need below. And, to add your signature to his petition, visit Change.org.