Prince Frederik of Luxembourg has died after a lifelong battle with a rare genetic disorder known as POLG mitochondrial ...

The prince had PolG disease, a genetic mitochondrial disorder that prevents the body's cells from producing adequate energy.

The Commonwealth service began around 3 p.m. U.K. time, and upon their arrival at Westminster Abbey, the royals were greeted ...

Prince Frederik of Luxembourg died on March 1, his family wrote in an emotional statement last week. He was 22.

Prince Frederik was diagnosed with the condition at the age of 14. Due to its impact on multiple organ systems, the disease ...

Prince Frederik of Luxembourg, the youngest son of Prince Robert and Princess Julie of Nassau, passed away on March 1 in ...

Prince Frederik of Luxembourg has passed away at the age of 22 after a long battle with POLG mitochondrial disease, his ...