Lymphatic-targeted therapy following neoadjuvant chemotherapy: a promising strategy for lymph node-positive breast cancer treatment

Med Oncol. 2015 Jul;32(7):184. doi: 10.1007/s12032-015-0634-7. Epub 2015 May 26.

Abstract

Neoadjuvant chemotherapy has been increasingly used to downstage breast cancer prior to surgery recently. However, in some cases, it was observed that despite sufficient regression of primary tumors, the metastatic lymph nodes remained nonresponsive. In this study, we applied lymphatic-targeted strategy to evaluate its efficacy and safety for patients presenting refractory nodes following systemic chemotherapy. A total of 318 breast cancer patients were demonstrated with lymph node metastasis by needle biopsy and given neoadjuvant chemotherapy. Two cycles later, 72 patients were observed with responsive tumors but stable nodes, 42 of which received a subcutaneous injection of lymphatic-targeted pegylated liposomal doxorubicin during the third cycle, while the remaining 30 patients were continued with former neoadjuvant therapeutic pattern and regarded as the control. Lymphatic-targeted treatment substantially increased both clinical and pathological node response rate [62 % (26/42) vs. 13 % (4/30) and 12 % (5/42) vs. 0 (0/30), respectively], and induced a higher apoptosis level of metastatic cells (median, 41 vs. 6 %), compared with the control. Moreover, a higher disease-free survival was observed after a median follow-up of 4 years (69 vs. 56 %). Inflammatory reaction surrounding injection sites was the most common side effect. Lymphatic chemotherapy has reliable efficacy and well-tolerated toxicity for breast cancer patients presenting refractory lymph nodes following neoadjuvant chemotherapy.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Antibiotics, Antineoplastic / therapeutic use
  • Breast Neoplasms / drug therapy*
  • Breast Neoplasms / pathology*
  • Breast Neoplasms / surgery
  • Chemotherapy, Adjuvant / methods
  • Disease-Free Survival
  • Doxorubicin / analogs & derivatives
  • Doxorubicin / therapeutic use
  • Female
  • Humans
  • Lymph Node Excision / methods
  • Lymph Nodes / drug effects*
  • Lymph Nodes / pathology
  • Lymph Nodes / surgery
  • Lymphatic Metastasis / pathology*
  • Middle Aged
  • Neoadjuvant Therapy / methods
  • Polyethylene Glycols / therapeutic use
  • Prognosis

Substances

  • Antibiotics, Antineoplastic
  • liposomal doxorubicin
  • Polyethylene Glycols
  • Doxorubicin