Connie Yates and Chris Gard want London’s Appeal Court to overturn the High Court decision which granted Great Ormond Street Hospital doctors permission to withdraw life-saving treatment and offer palliative care instead.
According to reports, they will appear at London’s Appeal Court on Tuesday (May 2).
Charlie suffers from a rare genetic condition and has brain damage which medics in this country say cannot be treated.
But the nine-month-old’s mum and dad want to take him to America for a treatment trial, against the advice and wishes of GOSH specialists, who say he should instead be offered palliative care.
In April Mr Justice Francis agreed with the medics, saying Charlie should be allowed to “die with dignity”.
The parents were left devastated by the decision but said soon after that they would consider appealing .
Hospital bosses said doctors would continue to provide life-support treatment until appeal decisions have been made.
A GoFundMe page set up fund treatment for Charlie has passed its £1.2 million target and is still receiving donations, with one anonymous donor giving £27,000 .
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