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Imagine traveling 300 miles for a play date. For two families it is one way to support and comfort their children as they battle a rare disease. Kevin and Angela Duffy live in Philadelphia and bring their daughter, Molly, to play with her best friend, Robbie, who lives in Boston. The three-years-olds share a special bond because they battling a debilitating genetic disease called Spastic Paraplegia Type 47 also known as SPG47-- a disease that causes mobility problems learning disabilities.