A Study of Pregnancy and Pregnancy Outcomes in Women With Breast Cancer Treated With Trastuzumab, Pertuzumab in Combination With Trastuzumab, or Ado-Trastuzumab Emtansine

An Observational Study of Pregnancy and Pregnancy Outcomes in Women With Breast Cancer Treated With Herceptin, Perjeta in Combination With Herceptin, or Kadcyla During Pregnancy or Within 7 Months Prior to Conception

The MotHER Pregnancy Registry is a United States (U.S.)-based, prospective, observational cohort study in women with breast cancer who have been or are being treated with a trastuzumab (herceptin)-containing regimen with or without pertuzumab (perjeta) or ado-trastuzumab emtansine (kadcyla) during pregnancy or within 7 months prior to conception (regardless of cancer stage at the time of trastuzumab, pertuzumab, or ado-trastuzumab emtansine exposure).

Inclusion Criteria:

• Pregnant; women identified at any trimester of pregnancy may enroll in this study as long as enrollment occurs prior to experiencing pregnancy outcome (that is [i.e.], live birth, stillbirth, or abortion)
• Exposure to at least one dose of trastuzumab (as adjuvant or metastatic treatment), pertuzumab plus trastuzumab combination treatment, or ado-trastuzumab emtansine during pregnancy or within 7 months prior to conception
• United States resident

Exclusion Criteria:

• Prior knowledge of pregnancy outcome (i.e., live birth, stillbirth, or abortion) at time of enrollment