Sylvester Stallones son, Sage, who famously appeared alongside his father in the 1990 movie Rocky 5, sadly passed away and his autopsy has been completed. The results for Sage Stallone will be deferred pending a toxicology report, which usually takes 4 to 6 weeks. Sage Stallone was found dead in his home on Friday of an apparent overdose. His body was discovered by the maid. Law enforcement sources believe his death was accidental and no note was found at the scene.