Kennedy Jr. is revising his ethics agreement to divest his interest in litigation against an HPV vaccine maker and directing the stake to his adult son, The New York Times reported Friday, citing a written response to questions from senators who are weighing his confirmation as Health and Human Services secretary.

Kathleen Sebelius, who served under Barack Obama, said she's "very concerned" that Kennedy doesn't "understand the agency that he's been nominated to run."

RFK Jr.'s confirmation hearings continue today as he appears before a second Senate committee. Follow STAT's live updates.