27-Year-Old Frozen Embryo Successfully Born: Insights for Fertility Planning with IVF in the U.S., Mexico, and Japan

For many people planning to have children, “now is not the right time” does not necessarily mean there will be no opportunity later. Work, marriage, age, and physical condition can all lead to adjustments in fertility plans. With the development of embryo freezing technology, some fertility cases that once seemed difficult to imagine have also prompted more people to consider how much possibility embryo preservation can leave for the future.

Was an embryo frozen 27 years ago eventually born?

In 2020, the birth of a girl named Molly in Tennessee, United States, attracted considerable attention. The embryo used to conceive her had been frozen and preserved as early as 1992. After 27 years of storage, it was thawed and transferred, eventually resulting in a successful birth.

Molly’s parents, Tina and Benjamin, had previously tried to conceive naturally for a long period of time. After choosing embryo donation, they obtained frozen embryos through a relevant organization and eventually welcomed their child.

This case gave many people a direct understanding that embryo freezing does not mean a fertility plan must be completed at a specific point in time. As long as embryos are properly preserved, subsequent thawing, culture, and transfer may still result in a successful pregnancy and birth.

Why can embryos be preserved for such a long time?

Embryo freezing mainly uses low temperatures to greatly reduce cellular metabolic activity, thereby minimizing potential cellular damage during storage.

Vitrification is currently commonly used in assisted reproductive medicine. Embryos are typically cultured to the blastocyst stage and then frozen for storage according to the specific circumstances. When they are needed in the future, the embryos can be thawed and transferred.

It is important to note that the length of embryo storage is not the only factor determining the outcome of embryo transfer. The developmental potential of the embryo, the condition of the eggs and sperm when the embryo was created, the woman’s age, and the condition of the endometrium can all affect the final result.

Why is embryo assessment becoming increasingly important?

After fertilization, embryos still need to undergo continued culture, and some can develop to the blastocyst stage. For families undergoing assisted reproduction, obtaining transferable blastocysts is an important milestone.

At this stage, IVF-PGT, also known as third-generation IVF, can be used for genetic testing of embryos. It provides further information about the embryo, including its chromosomal status, and offers more information for subsequent embryo selection and transfer.

For people who have already begun planning for parenthood, the focus should not only be on “how many eggs were retrieved,” but also on how many usable embryos were ultimately created, how those embryos developed, and how the subsequent transfer should be arranged.

The team at IVF USA, founded by Dr. Nathan Zhang, has been engaged in overseas assisted reproductive consultation services for more than ten years, providing U.S. egg freezing, U.S. IVF, and third-party assisted reproduction services for people in need. With nearly 20 years of experience in overseas assisted reproduction, IVF USA identified the Mexican market early in response to increasingly diverse and personalized reproductive needs and became the Chinese representative of Power Fertility Center, the Mexico POWER Fertility Center (POWER IVF). Dr. Nathan Zhang’s services have now expanded beyond the United States to include IVF and egg freezing in Mexico, IVF and egg freezing in Japan and Thailand, as well as services in Taiwan and Hong Kong. Let us move together toward the hope of new life.