A phase 2 study of sequential neoadjuvant chemotherapy with gemcitabine and doxorubicin followed by gemcitabine and cisplatin in patients with large or locally advanced operable breast cancer: results from long-term follow-up

Breast Cancer : the Journal of the Japanese Breast Cancer Society
Pramod K JulkaTarun Puri

Abstract

Neoadjuvant chemotherapy (NACT) is being increasingly used for patients with large-size operable breast cancer. This phase 2 study of sequential NACT with gemcitabine and doxorubicin (Gem + Dox) followed by gemcitabine and cisplatin (Gem + Cis) was conducted in women with large or locally advanced breast cancer. The objectives were to evaluate the pathological complete response (pCR) rate, toxicity, pathological and genetic markers predicting response, the proportion of patients undergoing breast conservation surgery, progression-free survival (PFS) and overall survival (OS) after 5 years, and time to treatment failure (TtTF). In this manuscript, we report the long-term OS, PFS, and TtTF results. Female patients aged at least 18 years with large T2 (at least 3 cm) or locally advanced (T3, T4, or N2) breast carcinoma were included. Treatment consisted of 4 cycles of Gem + Dox (gemcitabine 1,200 mg/m(2) on days 1 and 8 plus doxorubicin 60 mg/m(2) on day 1 of each 21-day cycle), followed by 4 cycles of Gem + Cis (gemcitabine 1,000 mg/m(2) on days 1 and 8 plus cisplatin 70 mg/m(2) on day 1 of each 21-day cycle), and then surgery. Sixty-five patients were enrolled. The pCR rate was 20%. The 5-year OS probability was 71% (95% CI 56-8...Continue Reading

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