Brothers aged 2 and 6 diagnosed with rare childhood dementia in US

Two brothers- Michael, aged 6 and Oliver, aged 2, both living in Washington in US, were diagnosed with dementia earlier this year. They were diagnosed with 'Type 2 Batten' disease in April and May, respectively. Their parents, Kristian Tucker and her husband Bryden found out that they too were carriers of 'Type 2 Batten' disease and had passed their genes.