[Overview of cancellations between November 2004 and March 2005 at the Antoine-Béclère hospital]

We analyzed 229 cycles in our IVF program between November 2004 and April 2005. The cancellation rate was 25%, but ranged from 20% in women below 37 years, to 50% in women aged over 41. Between 38 and 40 years old, it was 45%. FSH levels are significantly raised in women cancelled. Most of cancellations occurred at day 8 (46%) or at day 10 (40%), mostly because of low number of growing follicles. The risk of cancellation was increased when women had several pejorative predictive factors. The predictive value of the whole follicular cohort homogeneity is now being studied. It should be an important predictive factor of ovarian response to next stimulation cycle.