Parents Lydia and Timothy Ridgeway welcomed twins born from embryos frozen 30 years ago.
The previous known record holder was Molly Gibson, born in 2020 from an embryo that had been frozen for nearly 27 years. Molly took the record from her sister Emma, who was born from an embryo that had been frozen for 24 years.
The embryos were created for an anonymous married couple using in-vitro fertilization. The husband was in his early 50s, and they used a 34-year-old egg donor.For nearly three decades, they sat in storage on tiny straws kept in liquid nitrogen at nearly 200 degrees below zero, in a device that looks much like a propane tank.
As with any other human tissue donation, embryos must meet certain US Food and Drug Administration eligibility guidelines to be donated, including being screened for certain infectious diseases. "Adoption refers to living children," Klipstein said. "It's a legal process by which a parent-child relationship is created when it did not previously exist."
"We weren't looking to get the embryos that have been frozen the longest in the world," Philip Ridgeway said. "We just wanted the ones that had been waiting the longest." The Ridgeways assumed those listed with earlier donor numbers had been at the center the longest and tried to narrow their choice to those profiles.Southeastern Fertility, which partners with National Embryo Donation Center, thawed the embryos February 28. Of the five that were thawed, two were not viable. There's about an 80% survival rate when thawing frozen embryos, experts say.
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