Tandam cycle is for women that have a low ovarian reserve. With the combination of donor eggs you will increase the percentage of pregnancy.
Tandam cycle allows you to recieve a lower dosage of hormone medication. The proccess is the same as IVF/ICSI with addition with young healthy donor eggs. Your eggs and the donor eggs are fertilized together with the male patners sperm sample. The benifit of Tandam cycle is that you will have a Higher chance of pregnancy.