Hayden Panettiere is opening up about the loss of her younger brother, Jansen.“He was my only sibling, and it was my job to protect him,” the 35-year-old told People in an interview published Wednesday. “When I lost him, I felt like I lost half of my soul.”Jansen’s death came on the heels of Panettiere getting sober after entering rehab in 2020 and leaving an abusive relationship with her ex-boyfriend Brian Hickerson.