Parents speak on 'race against time' for two-year-old diagnosed with dementia

Parents Gus and Emily Forrester speak about their 'race against time' to save their two-year-old daughter Leni after she was diagnosed with 'childhood dementia' Without treatment, the disease will steadily damage their daughter's brain cells.>> "Every day that passes without treatment, this toxic waste is building up in our child's body." Emily told ITV News.They added: 'If we can't get treatment, she will suffer the most awful physical and mental decline you can imagine and then die in her early to mid-teens.'Sanfilippo disease is caused by an enzyme deficiency that prevents the body from breaking down certain molecules.