Complex sentence: It is used as endocrine therapy in women with ER/PR-positive stage 4 or recurrent metastatic breast cancer and has demonstrated similar efficacy compared to TAM in the treatment of metastatic breast cancer and as adjuvant breast cancer therapy.
Split into simpler sentences: It is used as endocrine therapy in women with ER/PR-positive stage 4 or recurrent metastatic breast cancer. And has demonstrated similar efficacy compared to TAM in the treatment of metastatic breast cancer and as adjuvant breast cancer therapy.