Response to neoadjuvant chemotherapy in breast cancer could be predictable by measuring a novel serum apoptosis product, caspase-cleaved cytokeratin 18: A prospective pilot study

Demiray M., Ulukaya E., Arslan M., Gokgoz S., Saraydaroglu O., Ercan İ., ...More

CANCER INVESTIGATION, vol.24, no.7, pp.669-676, 2006 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 24 Issue: 7
  • Publication Date: 2006
  • Doi Number: 10.1080/07357900600981307
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.669-676
  • Keywords: apoptosis, breast cancer, cytokeratin 18, M30, neoadjuvant chemotherapy, PREOPERATIVE CHEMOTHERAPY, TUMORS, PROLIFERATION, EXPRESSION, ASSAY
  • Bursa Uludag University Affiliated: Yes


The M30-monoclonal antibody recognizes a neo-epitope of cytokeratin 18 which is formed after caspase-cleavage during apoptosis. Caspase-cleaved cytokeratin 18 is released from apoptotic cells into circulation. The aim of this study was to evaluate the relationship between M30-antigen level and chemotherapy response in neoadjuvant treatment of breast cancer. Forty-two patients with invasive breast carcinoma received 4 cycles of anthracycline based neoadjuvant chemotherapy. Serum samples were obtained for assessment of M30-antigen levels before the administration of first chemotherapy cycle (baseline), and then after 24 and 48 hours for determination of chemotherapy induced apoptosis. M30-antigen levels at 24 and 48 hours were found to be significantly higher than baseline (p < 0.001, p = 0.003, respectively). M30-antigen levels in responders showed statistically significant increases at 24 and 48 hours (p < 0.001; p = 0.004, respectively), while statistically significant increases were not observed in nonresponders. Percentage change of M30-antigen levels was significantly higher in responders than nonresponders at 24 hours (p = 0.020). In conclusion, our study revealed a significant relationship between increases of M30-antigen levels in serum and overall response to therapy.