Woman Gave Birth After 25-Year Tissue Storage
A patient successfully conceived using ovarian tissue frozen for two and a half decades following cancer treatment.
Updated on Oct. 3, 2026 in Pregnancy
Kassandra Bacon gave birth to a boy on September 9, 2026, marking a world record for the longest storage period of egg tissue used in a successful pregnancy. The 44-year-old patient originally had her ovarian tissue harvested at age 18 before undergoing chemotherapy for Hodgkin lymphoma.
Why it matters
This medical achievement demonstrates the long-term viability of cryopreserved ovarian tissue, providing new hope for fertility preservation in patients who require gonadotoxic cancer treatments. It highlights how advancements in transplantation allow women to restore reproductive function even decades after their initial diagnosis.
The ovarian tissue was frozen for 25 years before being transplanted in May 2024 to restore hormonal function. The total cost of the self-funded procedure reached £50,000, and worldwide, 350 babies have been born from ovarian tissue transplants.
The players
Kassandra Bacon
She is the patient who successfully gave birth using ovarian tissue stored for 25 years.
The details
After receiving high-dose chemotherapy that caused irreparable damage to her ovaries in 2001, Bacon underwent a transplant in Israel where the previously frozen tissue was grafted back. The tissue successfully responded to hormones, re-establishing a menstrual cycle that allowed for natural conception.
Timeline
May 2001: Ovarian tissue was harvested and frozen at Addenbrooke's Hospital.
May 2024: The ovarian tissue transplant operation was performed in Israel.
December 25, 2025: The patient received a positive pregnancy test result.
September 9, 2026: The patient gave birth to a boy.
Culture Shift
This case follows a pattern set by the 350 babies born worldwide from ovarian tissue transplants while significantly extending the known storage limit. It reflects a broader trend of medical technology increasingly allowing patients to overcome long-term reproductive barriers caused by early-life health crises.
For individuals facing cancer treatments that risk fertility, this case provides a tangible example of the potential for future family planning through tissue cryopreservation. However, it also illustrates the significant personal financial investment required, as the procedure was self-funded at £50,000.
The takeaway
This case establishes a new milestone in reproductive medicine for long-term tissue viability after cancer treatment. Patients interested in similar preservation options should consult fertility specialists early to understand the technical feasibility and associated costs.
Further reading
Learn more about the latest developments in Pregnancy.
Source note: This article includes information reported by Mail Online.
