March 16 (UPI) — White House chief of staff Susie Wiles has been diagnosed with breast cancer and has an “excellent” prognosis, President Donald Trump announced Monday.

In a post on Truth Social, Trump said Wiles has “early stage breast cancer” and will be undergoing treatment “immediately.”

“She has a fantastic medical team, and her prognosis is excellent!” Trump wrote. “During the treatment period, she will be spending virtually full time at the White House, which makes me, as President, very happy!”

Wiles confirmed her diagnosis hours later in a statement on X.

“Nearly one in eight women in the United States will face this diagnosis. Every day, these women continue to raise their families, go to work and serve their communities with strength and determination,” she said.

Wiles attends a roundtable discussion on rural healthcare in the East Room of the White House in Washington, D.C., on January 16. File Photo by Yuri Gripas/UPI

Wiles attends a roundtable discussion on rural healthcare in the East Room of the White House in Washington, D.C., on January 16. File Photo by Yuri Gripas/UPI

“I now join their ranks.”

The diagnosis was made last week, she added, while expressing her gratitude to the doctors who “detected the cancer early.”

Wiles waits for President Donald Trump to speak during a roundtable with the Homeland Security Task Force in the State Dining Room of the White House in Washington, D.C., on October 23. File Photo by Will Oliver/UPI

Wiles waits for President Donald Trump to speak during a roundtable with the Homeland Security Task Force in the State Dining Room of the White House in Washington, D.C., on October 23. File Photo by Will Oliver/UPI

“I am encouraged by a very good prognosis,” she said.

“I am also deeply thankful for the support and encouragement of President Trump as I undergo treatment and continue serving in my role as White House chief of staff.”

Wiles looks on before President Donald Trump announces the 48th annual Kennedy Center Honors recipients at the John F. Kennedy Center for the Performing Arts in Washington, D.C., on August 13. File Photo by Will Oliver/UPI

Wiles looks on before President Donald Trump announces the 48th annual Kennedy Center Honors recipients at the John F. Kennedy Center for the Performing Arts in Washington, D.C., on August 13. File Photo by Will Oliver/UPI

The Hill reported that Wiles was seated next to Trump during Monday’s John F. Kennedy Center for the Performing Arts board meeting at the White House.

Vice President JD Vance also voiced his support for Wiles in a post on X.

Wiles smiles before President Donald Trump signs an executive order establishing a White House task force for the 2028 Los Angeles Olympic and Paralympic Games in the South Court Auditorium in the Eisenhower Executive Office Building in Washington, D.C., on August 5. File Photo by Bonnie Cash/UPI

Wiles smiles before President Donald Trump signs an executive order establishing a White House task force for the 2028 Los Angeles Olympic and Paralympic Games in the South Court Auditorium in the Eisenhower Executive Office Building in Washington, D.C., on August 5. File Photo by Bonnie Cash/UPI

“The Vance family is praying for our dear friend as she takes on her next fight!” he wrote.

Trump ally Elon Musk said he was “hoping for the best,” while rapper Nicki Minaj said, “God will get the glory for your testimony, my sister.”