The motives for the cancellation of embryos transfer can be as follows:
No viable embryo(s) developed from failed fertilization or arrested embryo growth
Fresh embryo(s) are all chromosomally and/or genetically being tested resulting in freezing all embryos until the testing results
Embryo(s) were tested and all were found to be chromosomally or genetically abnormal
Endometrial fluid is present
The patient is at risk for or demonstrates signs of ovarian hyperstimulation síndrome (OHSS)
The embryo(s) are unable to be successfully transferred into the uterus (very rare)