Use of cryo-banked oocytes in an ovum donation programme: a prospective, randomized, controlled, clinical trial.
Published: June 30, 2010 in Human Reproduction, Vol. 25, No. 9
Authors: Ana Cobo, Marcos Meseguer, José Remohí, Antonio Pellicer
Institution: Instituto Valenciano de Infertilidad (IVI), University of Valencia, Valencia, Spain
This randomized controlled trial of over 600 egg recipients (women undergoing IVF with an egg from a donor) was designed to compare the outcome of vitrified-banked (frozen and thawed) eggs with the “gold standard” procedure of using fresh eggs. The result: ongoing pregnancy rates were roughly similar between the group using frozen eggs and the group using fresh, confirming the “non-inferiority” of frozen eggs.