Parents Chris Gard and Connie Yates have urged the High Court to let baby Charlie undergo treatment
Specialists at Great Ormond Street Hospital in London think it is time to stop providing life support treatment to Charlie Gard.
Doctors say the eight-month-old, who suffers from a rare genetic condition and has brain damage, should move to a palliative care regime.
Charlie’s parents, who are both in their early 30s, disagree.
Postman Chris Gard and Connie Yates, of Bedfont, west London, want to be allowed to take him to a hospital in America for a treatment trial.
Mr Justice Francis has been asked to make decisions about what is in Charlie’s best interests.
The judge is analysing evidence at a hearing in the Family Division of the High Court in London.
He has been told that Charlie, who was born on August 4 2016, has a form of mitochondrial disease, a condition which causes progressive muscle weakness.
A lawyer representing Charlie’s parents said that the little boy should be given a chance.
Charlie’s parents… consider there is a chance that their child will improve
Barrister Sophia Roper
Barrister Sophia Roper told the judge that Charlie would not suffer significant harm if he underwent treatment in America.
She said his parents had raised £1.2 million to pay for the treatment.
Ms Roper said: “Charlie’s parents… consider there is a chance that their child will improve.
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Specialists think it is time to stop providing life support to the eight-month-old
“They invite the court to decide that it is in his best interests to get the chance.”
Earlier doctors treating the sick baby said life support treatment should stop.
The specialists at Great Ormond Street Hospital say Charlie is largely unable to move and has significant irreversible brain damage.
Baby Charlie suffers from a rare genetic disorder and has brain damage
A lawyer representing Great Ormond Street specialists said a number of “world-renowned” experts agreed.
Debra Powell QC paid tribute to Charlie’s parents.
Ms Powell said Chris Gard and Connie Yates had given their son “complete and unwavering” love and support.
A lawyer for the baby's parents said he would not suffer significant harm if treated in America
But she said Charlie should not get long-term life support treatment because his “quality of life” was “so poor”.
Mr Justice Francis was yesterday hearing final submissions from lawyers representing all sides.
Lawyers say they expect the judge to announce his decision next week.