A woman who suffered a bone marrow disease when she was a child has given birth using frozen ovarian tissue which had been removed years earlier.
Moaza Al Matrooshi, 24, is thought to be the first person in the world have a baby after having the ovary removed and cryopreserved before she entered puberty.
Al Matrooshi, originally from Dubai, was eight when she had the organ retrieved before having chemotherapy and a bone marrow transplant for the inherited blood disorder Beta Thalassaemia.
As she had not entered puberty, she could not have IVF treatment to allow her ovaries to produce eggs.
Her remaining ovary was only partially functioning following the chemotherapy and she went into early menopause.
Doctors decided to transplant the frozen ovarian tissue back into Al Matrooshi when she was 21 to give her a chance of conceiving using her own eggs.
Al Matrooshi then underwent IVF treatment with her partner and gave birth to a baby boy on Tuesday.
Adam Balen, chair of the British Fertility Society, said: "This is a ground-breaking step in this area of fertility preservation and has the potential to help many young people who face cancer treatment preserve their fertility chances in the future."
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