Meghan McCain Meghan Marguerite McCainKasich to Meghan McCain: Concern over abortion 'dwarfed' by need to beat Trump Meghan McCain says she believes report Trump called fallen soldiers 'losers' Meghan McCain hits Ivanka Trump's defense of president's Twitter: It's not a 'communication style,' it's 'cruelty' MORE, co-host of "The View," tweeted Wednesday about Glioblastoma (GBM) Awareness Day.

Her father, former Sen. John McCain John Sidney McCainAnalysis: Biden victory, Democratic sweep would bring biggest boost to economy The Memo: Trump's strengths complicate election picture Mark Kelly: Arizona Senate race winner should be sworn in 'promptly' MORE (R-Ariz.), died of the brain cancer last year.

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"Today is the first time July 17th is being declared GBM Awareness Day. It will be this day from today on forward," she wrote. "We commit to fighting the evil cancer Glioblastoma and finding a cure for those who have been taken from us too soon."

Today is the first time July 17th is being declared GBM Awareness Day.



It will be this day from today on forward.



We commit to fighting the evil cancer Glioblastoma and finding a cure for those who have been taken from us too soon. #GBMday pic.twitter.com/M1wCtr4sxu — Meghan McCain (@MeghanMcCain) July 17, 2019

McCain also discussed the disease on "The View," and her mother Cindy McCain appeared in the audience.

The co-host called GBM “a really horrific cancer that we are obviously all committed to fighting.”

.@MeghanMcCain and her mother @cindymccain honor their late father and husband Sen. John McCain on Glioblastoma Awareness Day. ❤️



Learn more about the fight against Glioblastoma: https://t.co/aoofmEbLfT #GBMday pic.twitter.com/xl8UMUEN6g — The View (@TheView) July 17, 2019

In June, the Senate agreed to a bipartisan resolution to designate July 17 Glioblastoma Awareness Day. The resolution was introduced by Sen. Lindsey Graham Lindsey Olin GrahamSteele Dossier sub-source was subject of FBI counterintelligence probe Hillicon Valley: Subpoenas for Facebook, Google and Twitter on the cards | Wray rebuffs mail-in voting conspiracies | Reps. raise mass surveillance concerns Key Democrat opposes GOP Section 230 subpoena for Facebook, Twitter, Google MORE (R-S.C.), known for his close friendship with John McCain, and had three Democratic and two Republican co-sponsors.

Graham also tweeted about GBM on Wednesday, writing, "Tragically, glioblastoma has taken the lives of too many across the country, including those of our close former colleagues Sen. John McCain and Sen. Ted Kennedy."

July 17, 2019 is Glioblastoma Awareness Day. We hope today will bring added awareness, building on the efforts of the GBM advocacy community and organizations like @NBTStweets who have dedicated so much time and energy to fighting this disease and supporting those affected by it. — Lindsey Graham (@LindseyGrahamSC) July 17, 2019