JCT> Vol.2 No.3, August 2011

Successful Treatment of Recurrent Triple-Negative Breast Cancer with Combination of Targeted Therapies

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ABSTRACT

We present an interesting case of a 56-year-old female diagnosed with invasive high-grade triple-negative breast cancer, who developed diffuse liver metastases following lumpectomy and combination chemotherapy with docetaxel, doxorubicin and cyclophosphamide, re-excision and radiation therapy. Restaging CT and PET scans revealed massive involvement of the liver. She was treated with a combination of gene targeted and cytotoxic chemotherapy including capecitabine, erlotinib, bevacizumab and phenylbutyrate. She tested weakly positive for HER-2 despite prior negative FISH, which prompted us to add trastuzumab to her regimen. Baseline CT revealed five liver tumors—the sum of the products of the two largest perpendicular diameters was 110 cm2. Follow-up CT after three months of treatment revealed 62% decrease in total tumor load. More than 50% decrease in tumor size persisted on two follow-up CT scans, confirming partial response. She developed progressive disease after 15 months of treatment. A group of 16 women, including this patient, diagnosed with triple negative breast cancer with distant metastases were treated by our team with a combination of gene targeted therapy and chemotherapy. Six percent of patients obtained partial response, 25% minor response, 31% stable disease, and 38% progressive disease. The median duration of treatment in patients who relapsed after the second-, third- and fourth- to seventh-lines of chemotherapy was 59 weeks, 22 weeks and 17 weeks, respectively. Comparison of results obtained with cytotoxic chemotherapy revealed that MDT in the second- and third-lines was only nine and four weeks, respectively. In conclusion, this case report indicates that it is possible to obtain durable objective response of recurrent TNBC with a combination of gene targeted agents.

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Cite this paper

S. Burzynski, A. Marquis, E. Nagy-Kubove and T. Janicki, "Successful Treatment of Recurrent Triple-Negative Breast Cancer with Combination of Targeted Therapies," Journal of Cancer Therapy, Vol. 2 No. 3, 2011, pp. 372-376. doi: 10.4236/jct.2011.23050.

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