title: Fertility preservation outcomes may differ by cancer diagnosis.
abstract: BACKGROUND
  Cancer survival has improved significantly and maintaining fertility is both a major concern and an important factor for the quality of life in cancer patients.
  
  
  OBJECTIVE
  To explore differences in oocyte stimulation for fertility preservation (FP) patients based on cancer diagnosis.
  Between 2005 and 2011, 109 patients elected to pursue FP at a single institution.
  
  
  METHODS
  In vitro fertilization (IVF) outcome variables between four cancer diagnostic groups (breast, gynecologic, lymphoma/leukemia and other) and age-matched male factor or tubal factor infertility IVF control group were compared.
  
  
  METHODS
  ANOVA and Chi-square analyses were employed to compare variables between the groups that were normally distributed. Kruskal-Wallis with subsequent Mann-Whitney U-test were used for data that were not normally distributed.
  
  
  RESULTS
  Women with gynecologic malignancies were significantly older than the women in the other three groups, but tended to have a better ovarian response. Women with hematologic malignancies were most likely to have been exposed to chemotherapy and had the longest stimulations with a similar number of oocytes retrieved. The age-matched IVF controls had higher peak estradiol levels, number of oocytes obtained, and fertilization rates when compared to cancer patients with or without a history of prior chemotherapy.
  
  
  CONCLUSIONS
  Factors including age, type of cancer and chemotherapy exposure, can influence response to ovarian stimulation. Discussing these findings with patients presenting for FP may aid in setting realistic treatment expectations.
authors.affiliation: Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, US.
authors.forename: Mary Ellen
authors.initials: ME
authors.lastname: Pavone
authors.affiliation: Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, US ; Fertility Centers of Illinois, Orland Park, Illinois, US.
authors.forename: Jennifer
authors.initials: J
authors.lastname: Hirshfeld-Cytron
authors.affiliation: Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, US.
authors.forename: Angela K
authors.initials: AK
authors.lastname: Lawson
authors.affiliation: Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, US.
authors.forename: Kristin
authors.initials: K
authors.lastname: Smith
authors.affiliation: Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, US.
authors.forename: Ralph
authors.initials: R
authors.lastname: Kazer
authors.affiliation: Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, US.
authors.forename: Susan
authors.initials: S
authors.lastname: Klock
keywords: Cancer; cryopreservation; fertility preservation; in vitro fertilization; oncofertility