The spokesperson also said that the former president had never been diagnosed with prostate cancer before last week.

Biden’s office dismissed speculation that the White House hid his cancer diagnosis, but Republicans are investigating, and Trump accused his aides of treason.

Peter A. McCullough, a former cardiologist who promoted unproven treatments like ivermectin and hydroxychloroquine at the height of the pandemic, posted a video to Instagram claiming that Biden’s cancer was “turbo cancer.”