Girl one of 35 in world with rare illness
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Girl, 10, one of 35 in world with PPP2R5D condition

Hermione Heseltine is one of only 35 people in the world to have a PPP2R5D genetic disease, which was only discovered two years ago.

The 10-year-old, who is from Northampton, has been to the United States to help with research into the condition.