This is the heartbreaking moment a little girl with rare 'childhood Alzheimer's' told her mom and dad she loved them for the last time.
Keira Esposito, now eight, was diagnosed with Sanfilippo syndrome, a rare genetic condition that causes fatal brain damage, in September 2015.
The syndrome - often dubbed childhood Alzheimer's - is caused by an enzyme deficiency, which means that Keira’s body can’t break down waste products in her brain and other parts of her body.
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