There still is no timetable for U.S. Sen. John McCain to return to Washington, D.C., but his daughter on Tuesday floated the possibility of summer.

“I wish I had an exact date, but I just don’t,” Meghan McCain told Phoenix radio station KTAR-FM (92.3). “I am very cautiously optimistic about the summer, yes.”

McCain, 81, since July has been battling a deadly form of brain cancer called glioblastoma. He was hospitalized in December for a viral infection and for side effects related to his ongoing chemotherapy and radiation treatment and has been in Arizona since Dec. 17.

The six-term Arizona Republican’s informal goal of returning to work in the Senate in January came and went as McCain continues to get physical therapy at his family cabin in Cornville, near Sedona.

RELATED: Bernie Sanders: John McCain is missed in Senate

Meghan McCain, a TV commentator who co-hosts ABC’s “The View,” gave the update on her father’s health on KTAR’s “Mac & Gaydos” program.

“As everyone knows especially with this cancer, you have to take it scan by scan, but he is doing really good, much better than I think people anticipated,” she said in the radio interview.

“He’s doing very well and I feel very lucky that he is doing so well,” she added.

In a previous interview, Meghan McCain said concerns about this year’s brutal flu season were helping to keep her father in Arizona.

With his immune system weakened, “everybody is worried about him getting the flu,” she said on a Politico podcast in February.

RELATED: Cindy McCain: John McCain ‘doing fine and has no intention of resigning’

Meghan McCain and her mother, Cindy McCain, last week helped shoot down a dubious online report anticipating McCain’s resignation for health reasons.

Cindy McCain tweeted that her husband “is doing fine and has no intention of resigning!”

Meghan McCain likewise definitively dubbed the report, which had gotten some traction on social media, “FAKE NEWS.”

RELATED: Cindy McCain shares photo with Sen. John McCain in Sedona

While not giving interviews to the media, the elder McCain has continued to issue written statements from Arizona and remains active on Twitter. 

On Tuesday, he raised concerns about the role Gina Haspel, President Donald Trump’s new nominee for CIA director, played in the “disgraceful” torture of detainees in U.S. custody after the Sept. 11, 2001, terrorist attacks.

Nowicki is The Arizona Republic’s national political reporter. Follow him on Twitter, @dannowicki.

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