Which patients pursue fertility preservation treatments? A multicenter analysis of the predictors of fertility preservation in women with breast cancer.

OBJECTIVE To evaluate predictors of undergoing fertility preservation treatment (FPT) in women with breast cancer. DESIGN Secondary analysis of a clinical database. SETTING Three academic fertility preservation centers. PATIENT(S) One hundred eight patients with breast cancer undergoing FPT and 77 patients with breast cancer not undergoing FPT from 2005 to 2010. INTERVENTION(S) None. MAIN OUTCOME MEASURE(S) Patients' demographic and medical information. RESULT(S) Women who had FPT were older, wealthier, and had lower cancer stage compared with women who did not have FPT. The rate of the administration of neoadjuvant chemotherapy (NAC) was significantly lower in women who underwent FPT. After adjusting for age, body mass index (BMI), income, cancer stage, and center, a negative correlation persisted between NAC and FPT (odds ratio 0.091, 95% confidence interval 0.009-0.904). When we stratified the women by center, women at center 1 had a significantly lower FPT rate, lower parity, higher BMI, more advanced cancer stage, and lower income compared with centers 2 and 3. The rates of NAC were significantly higher in center 1. CONCLUSION(S) Although age, BMI, income, cancer stage, center, and NAC seem to be associated with undergoing FPT, NAC is the only modifiable variable. Because NAC restricts the time available for FPT, oncologists may consider offering adjuvant chemotherapy, except in cases in which NAC clearly improves survival, in women who are interested in FPT.