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

Australian researchers are providing new hope for a cruel killer disease with royal connections. Called mitochondrial disease, it affects as many as one in 2000 Australians and is deadly when it robs ...

Prince Frederik of Luxembourg's family has shared a poignant new photo of the late royal taken before his death at the age of ...

Prince Frederik of Luxembourg, son of Prince Robert and Princess Julie of Nassau, passed away at 22 in Paris due to POLG ...

Prince Frederik of Luxembourg spoke about his PolG diagnosis and what brought him solace in an emotional video that has ...

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

Mei Fa Tan spoke exclusively to Us Weekly about what it was like to work with Luxembourg’s Prince Frederik before his death ...

Prince Frederik of Luxembourg, son of Prince Robert and Princess Julie of Nassau, passed away at 22 in Paris due to POLG mitochondrial disease. Diagnosed at 14, Frederik advocated for research and ...

Director Mei Fa Tan spoke out about her experience working with the son of Prince Robert of Luxembourg and Princess Julie of ...

Kate Middleton shared why she and Prince William moved with their kids Prince George, Princess Charlotte and Prince Louis from London to Windsor.

In his message announcing Frederik’s death, Prince Robert praised his son’s tireless efforts to raise awareness about the disease and fund research to find a cure for PolG, calling him ...