A woman in London broke a world record by becoming the first to give birth after having one of her ovaries frozen before puberty.

Moaza Al Matrooshi who is 24 years old, was born with a blood disorder and if it was left untreated, could have killed her.

She had her ovary tissue detached before she had chemotherapy, which is known to damage organs, to overcome her rare disease. Doctors defrosted her ovary tissue in 2015 and began to transplant it back into her body which restored her fertility, the BBC reports. After undergoing successful IVF treatment, her son was born at Portland Hospital, London on 14th of December.

Mrs. Al Matroooshi who is originally from Dubai, United Arab Emirates, had her right ovary removed when she was 9 years old. Scientists from the University of Leeds froze her ovarian tissues and kept it in liquid nitrogen containers

Then Danish surgeons transplanted five parts of the frozen remains into her body last year. Four were stitched along her left ovary, which had failed as a result of the chemotherapy she had undergone when she was young.

After the surgery, she began to ovulate. She then pursued IVF treatment with her husband, Ahmed, to increase their chances of conceiving a baby. Doctors collected eight eggs from the fertility treatment, three embryos were produced which two were implanted back into Mrs. Al Matrooshi’s womb.

Experts states it could give hope to many citizens who risk losing the chance of motherhood because of treatments for a range of chronic diseases. Mrs. Al Matrooshi said she was grateful for her mother’s decision to preserve her ovarian tissue, believing she may want to have children in the future.

“It’s like a miracle. We’ve been waiting so long for a healthy baby. I always believed that I would be a mum who would raise a baby. I didn’t stop hoping and now I have my baby in my arms-it’s a perfect feeling.”