Prince Frederik of Luxembourg died after years of being diagnosed with a rare mitochondrial disease called PolG.

Prince Frederik of Luxembourg, the youngest son of Prince Robert of Luxembourg and Princess Julie of Nassau, has died after a ...

Prince Frederik, the son of Europe's Prince Robert of Luxembourg, has died from a rare genetic disease, his family announced.

Prince Frederik of Luxembourg, who died at 22, spoke about the rare genetic disorder he navigated in a video released by The ...

The Fox News Entertainment Newsletter brings you the latest Hollywood headlines, celebrity interviews and stories from Los ...

Commissioned by Frederik’s mother, Princess Julia of Nassau, to helm an educational short film about the disease with ...

After Prince Frederik of Luxembourg died from PolG mitochondrial disease, a rare genetic disorder at only 22, his father Prince Robert detailed his final moments.

Prince Frederik of Luxembourg, the youngest son of Prince Robert of Luxembourg and Princess Julie of Nassau, has died at 22 ...

Prince Frederik of Luxembourg, the youngest son of Prince Robert of Luxembourg and Princess Julie of Nassau, has died after a lifelong battle with a rare genetic disorder known as POLG ...

"Frederik's last question to me, prior to his other remarks was: 'Papa, are you proud of me?'" the 56-year-old said in a statement on the website of the late prince's PolG Foundation. "He had ...