Objective We conducted a multicenter phase II trial to assess the efficacy and toxicity of docetaxel (D) and carboplatin (C) combination as neoadjuvant therapy for stage II or III breast cancer (BC). clinical response (15 cCR 28 cPR). Nine SIB 1757 (16% 90 CI :10%-28%) patients had pCR. Four of 9 (44%) pts with TNBC achieved pCR. Thrombocytopenia (5%) was the only grade 4 adverse event (AE). The most common grade 3 AE were thrombocytopenia 19% fatigue 12% and anemia 9%. Conclusions 4 cycles of 2-weekly D and C are feasible with acceptable toxicity and pCR rate of 16%. This regimen can be considered for neoadjuvant therapy of BC particularly for patients not candidates for anthracycline therapy. High pCR rate of 44% noted in a subset of patients with TNBC is encouraging and needs to be validated in large potential trial. Keywords: neoadjuvant breasts tumor dose-dense docetaxel carboplatin SIB 1757 Intro Surgery may be the mainstay of treatment of individuals with early stage breasts tumor. Adjuvant systemic therapy after local-regional treatment offers been proven in randomized tests to bring about improved recurrence-free and general success. Preoperative systemic therapy (PST) (also called neoadjuvant therapy or induction therapy) continues to be utilized for individuals with locally advanced breasts cancer and stage II studies recommend improved results with this plan. PST in addition has been explored for individuals with early stage operable breasts cancer because this process may present some potential benefits including possibility to evaluate prognostic and predictive natural markers and chance for quicker evaluation of newer regimens since reactions can be straight observed. Randomized managed trials show equal results with adjuvant therapy or PST using the same real estate agents but the second option increases the probability of breasts conserving surgery becoming feasible.1-3 PST also is apparently connected with better individual conformity than adjuvant therapy.4 Response to PST correlates with long-term outcomes. Pathologic full remission (pCR) can be has been proven to be highly connected with improved general survival and could serve as the right surrogate endpoint.3 5 There is certainly intense fascination with evaluating newer regimens that may improve pCR prices which may result in better survival. A lot of the regimens examined for PST possess included an anthracycline and a taxane in mixture or sequence for their proven activity in adjuvant and metastatic Rabbit polyclonal to WWOX. breasts cancer. pCR prices of 8 -28% have already been reported with regards to the agent mixture dosage and duration of treatment.6-9 Taxanes are one of the most active agents in breast cancer. Objective response price up to 50% have already been described in stage III research of docetaxel in treatment na?ve MBC.10 Single agent carboplatin also offers considerable activity in BC with RR of 25 – 37%.11 12 Docetaxel and carboplatin possess synergistic activity and largely nonoverlapping toxicities as well as the combination was been shown to be highly dynamic with overall RR of 60% as 1st range therapy for metastatic breasts tumor including in anthracycline pretreated individuals.13 Furthermore to evaluating book real estate agents addititionally there is interest in exploring whether treatment schedule can impact the activity of agents in neoadjuvant setting. The Gompertzian kinetic model of tumor growth in which the rate of tumor growth is not constant but decreases as the tumor increases in SIB 1757 size after cytoreductive therapy would predict that decreasing the period available for re-growth by more frequent administration of chemotherapy in a dose-dense schedule would SIB 1757 lead to improved response rate. The CALGB Intergroup trial C9741 demonstrated improved disease-free and overall survival in patients with axillary node positive breast cancer who received adjuvant therapy with AC → T (paclitaxel) or sequential single agent use of these agents in a SIB 1757 dose-dense (every 2 week) schedule compared with the same drugs administered every 3 weeks.14 Dose dense scheduling is now an established practice in adjuvant therapy for breast cancer. Whether a similar approach will have enhanced efficacy as PST is unknown but available data suggest that dose dense therapy is feasible with tolerable toxicity.15 16 Based on the demonstrated efficacy of docetaxel and carboplatin as single agents and in combination as well as the potential of further improving their activity by dose-dense scheduling we conducted a phase II trial to evaluate the efficacy and tolerability of 4 cycles of docetaxel and carboplatin administered every 14 days with.