Gard's parents had raised nearly $2 million to treat his illness, known as encephalomyopathic mitochondrial DNA depletion syndrome, abroad.
"Whatever the strong emotions raised by this case, there can be no excuse for patients and families to have their privacy and peace disturbed as they deal with their own often very stressful situations or for dedicated doctors and nurses to suffer this kind of abuse", she said.
Outside the court, father Chris Gard thanked hospital staff but said medical opinion they had sought assured them Charlie would have been a "normal healthy little boy".
Inside the High Court, a lawyer representing Mr Gard and Ms Yates told Mr Justice Francis that "time had run out" for the 11-month-old.
The parents said it was the first time they had been told about the latest results in the crucial test of brain function.
But in their statement on Monday's hearing, the hospital also criticized Hirano, saying it was concerned because he had testified that he retained a financial interest in some of the compounds he proposed prescribing for Charlie.
Charlie's parents, Chris Gard and Connie Yates, raised money by crowdfunding for the experimental treatment in the USA and engaged in a legal battle in multiple courts.
Charlie Gard's parentsChris Gard and Connie Yates speak to the media outside the High Court. "They say his life support should be shut off so he can die peacefully".
Judge Francis was due to rule Monday on whether there was sufficient new evidence to permit the parents to bring Charlie to the USA for a an experimental therapy.
"Our son is an absolute warrior and we could not be prouder of him and we will miss him terribly", Ms Yates told High Court, as she and Mr Gard accepted that the fight had to end.
"Charlie did have a real chance of getting better if only therapy was started sooner", Ms Yates said.
But his parents had been engaged in a court battle to have him undergo the experimental treatment in the United States, in the hope that it could help.
"Due to the delay in treatment that window of opportunity has been lost " Armstrong said.
"Dark days lie ahead for these parents..." they want to spend time with Charlie", Armstrong said. "It is no longer in Charlie's best interests to pursue this course of treatment".
GOSH said in a statement it believed there had been no real change in Charlie's responsiveness since January and medical experts had concluded before Christmas that Charlie had suffered irreversible brain damage so any chance that the experimental USA therapy might help had already faded. "They wish to treasure their remaining time with Charlie, however short". They argue his life support should be turned off.
"The parents' worst nightmare have been confirmed", Mr Armstrong said.
THE parents of critically ill baby Charlie Gard have dropped their legal bid to have him sent to the us for experimental treatment, saying "a whole lot of time had been wasted" for their son.
The couple had taken their fight to the European Court of Human Rights in Strasbourg, France, after exhausting all legal options in the UK. The case was reopened after two hospitals overseas approached the hospital with what could be proof that alternative treatments could indeed help Charlie.
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