P rince Frederik of Luxembourg, the youngest son of Prince Robert of Luxembourg and Princess Julie of Nassau, died in Paris at age 22 on March 1—a day after Rare Disease Day—of a rare genetic disease ...

Prince Frederik, 22, died from a mitochondrial disease known as PolG, his father, Prince Robert of Luxembourg, announced on the website of his son's foundation, the POLG Foundation. "Frederik ...

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

Prince Frederik, the youngest son of Prince Robert of Luxembourg and Princess Julie of Nassau, died at age 22 on March 1 from ...

a day after internationally recognized Rare Disease Day, which takes place on the last day of February, Prince Robert of Luxembourg said in a statement posted to the POLG Foundation website.

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 mitochondrial disease. He was 22.

Prince Frederik, the youngest son of Prince Robert of Luxembourg and Princess Julie of Nassau, has died at the age of 22. He passed away on March 1 from POLG Mitochondrial disease, a rare genetic ...

Prince Frederik, the youngest son of Prince Robert of Luxembourg and Princess Julie ... The beloved royal died on March 1 from POLG Mitochondrial disease — a rare genetic disorder that affects ...

Prince Frederik of Luxembourg, aged 22, passed away from POLG mitochondrial disease, a rare genetic disorder. His father announced the news and praised Frederik's courage and dedication to raising ...

Prince Frederik, son of Prince Robert of Luxembourg, has died from a rare genetic disease, his father announced. He was 22. Robert and his wife, Princess Julie of Nassau, announced Frederik's ...