RT Journal Article T1 The economic burden of metastatic breast cancer in Spain. A1 Bermejo de Las Heras, Begoña A1 Cortes Ramon Y Cajal, Javier A1 Galve Calvo, Elena A1 de la Haba Rodriguez, Juan A1 Garcia Mata, Jesus A1 Moreno Anton, Fernando A1 Pelaez Fernandez, Ignacio A1 Rodriguez-Lescure, Alvaro A1 Rodriguez Sanchez, Cesar A A1 Ruiz-Borrego, Manuel A1 Remak, Edit A1 Barra, Magdolna A1 Rivero, Maria A1 Soto Alvarez, Javier K1 Costs of illness K1 Direct costs K1 Metastatic breast cancer K1 Resource utilisation K1 Treatment patterns AB The study aimed to estimate the burden of metastatic breast cancer (mBC) in Spain over 5 years. An incidence-based cost-of-illness model was developed in which a cohort of patients with mBC was followed from the diagnosis of metastatic disease over 5 years or death. Resource use data were collected through a physician survey conducted with 10 clinical experts in Spain. The model distinguished patients according to HER2 and hormonal receptor (HR) status, and followed the patient cohort in monthly cycles. The incident cohort was estimated to be 2,923 patients with mBC, consisting of 1,575 HER2-/HR+, 520 HER2+/HR+, 324 HER2+/HR-, and 503 triple negative patients. The estimated mean survival over the 5-year time period was 2.51 years, on average, with longer survival of 3.36 years for HER2+/HR+, 2.41 years for HER2-/HR+, 2.82 years for HER2+/HR- and shortest mean survival of 1.74 years for triple negative patients. The total costs were €469,92,731 for the overall population, €190,079,787 for the HER2-/HR+, €151,045,260 for the HER2+/HR+, €80,827,171 for the HER2+/HR- and €47,540,512 for the triple negative subgroups over 5 years. Per patient total costs were €160,642 on average, €120,664 for HER2-/HR+, €290,346 for HER2+/HR+, €249,152 for HER2+/HR-and €94,572 for triple negative patients over 5 years. The economic burden of mBC in Spain is significant, but differs by HER2 and HR status. HER2-/HR +patients account for the highest burden due to the prevalence of this category, but HER2+/HR +patients have the highest per patient costs. PB BMJ Group SN 2047-9956 YR 2018 FD 2018-06-26 LK http://hdl.handle.net/10668/15115 UL http://hdl.handle.net/10668/15115 LA en NO Bermejo de Las Heras B, Cortes Ramon Y Cajal J, Galve Calvo E, de la Haba Rodriguez J, Garcia Mata J, Moreno Anton F, et al. The economic burden of metastatic breast cancer in Spain. Eur J Hosp Pharm. 2020 Jan;27(1):19-24 DS RISalud RD Apr 11, 2025