A 2025 case report describes a live birth from a frozen immature egg matured through rescue IVM, suggesting that immature eggs in freezing cycles may have reproductive potential and should not be routinely discarded.
Egg freezing and thawing
In a 2025 study, researchers estimated how many frozen eggs are needed, by age, to reliably yield three euploid blastocysts or achieve one, two or three live births, offering practical guidance for egg freezing patients.
Researchers in a 2023 study combined the results of 74 studies to investigate what factors contribute to euploid live birth and miscarriage rates, identifying embryo quality, maternal age, specific diagnoses, repeat freeze/thaw, and other factors.
