Woman, 49, is Oldest In-vitro Mom Using Own Egg
A New York City fertility doctor has announced that a 49-year-old patient recently became the oldest woman on record to give birth using in-vitro fertilization (IVF) with her own egg, frozen at age 48. The doctor said another 48-year-old patient is pregnant with her own egg, frozen at age 47.
Dr. John Zhang said his New Hope Fertility Center, which opened on New York's Upper East Side in 2004, works with women up to age 50 who want to use their own eggs for IVF.
Nearby NYU Fertility Clinic and the Columbia University Center for Women's Reproductive Care use eggs extracted from patients only through age 45. Some fertility clinics set the limit as young as 43. Beyond the age limits, patients are implanted with eggs harvested from younger women.
Zhang said he treated the 49-year-old patient, who wishes to remain anonymous, for nearly two years. While most fertility clinics implant several eggs and use fertility drugs, techniques that often result in multiple births, Zhang said his treatments use only one or two eggs per monthly cycle and few or no fertility drugs. He said the treatments are successful in about 5 percent of cases.
Both the 49-year-old mother and the 48-year-old mother-to-be will be subjects of a paper Zhang plans to submit to the journal Fertility and Sterility.
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