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Title: Detection of micrometastatic disease and monitoring of perioperative tumor cell dissemination in primary operable breast cancer patients using real-time quantitative reverse transcription-PCR
Authors: Ismail, Mohamed Saad ×
Wynendaele, Wim
Aerts, Joeri L E
Paridaens, Robert
Gaafar, Rabab
Shakankiry, Nayera
Khaled, Hussein M
Christiaens, Marie-Rose
Wildiers, Hans
Omar, Sherif
Vandekerckhove, Philippe
Van Oosterom, Allan #
Issue Date: Jan-2004
Series Title: Clinical Cancer Research vol:10 issue:1 Pt 1 pages:196-201
Abstract: PURPOSE: We previously found a statistically significant number of cytokeratin 19 (CK19)+ cells in peripheral blood (PB) of stage IV breast cancer (BC) patients compared with those of healthy volunteers, using a quantitative real-time reverse transcription-PCR. We aimed to apply the technique on bone marrow (BM) of primary operable BC patients. Pre- and postoperative PB samples of these patients were further analyzed to investigate possible shedding of CK19+ cells during the operation. EXPERIMENTAL DESIGN: In 54 primary operable BC patients, we analyzed 50 BM samples taken preoperatively and 297 PB samples. PB samples were collected before surgery; immediately after surgery; on the first, second, and fifth day postoperatively; and one month postoperatively. RESULTS: In BM of controls and BC patients, we detected a median of 28 and 568 CK19+ cells/5 x 10(6) leukocytes, respectively (P < 0.001). In preoperative blood (B-1) samples, we measured a median of 109 CK19+ cells. Using the upper limit of 95% confidence interval of controls as cutoff, 74% and 52% of BM and (B-1), respectively were considered CK19+. There was no significant correlation between CK19+ cells in BM and (B-1) and classical prognostic factors. We found no significant difference between blood samples at different time points with respect to the average CK19+ cells. CONCLUSIONS: In primary BC patients, we detected high numbers of CK19+ cells in BM and PB (B-1) samples compared with controls. However, no significant correlation between the presence of CK19+ cells in BM and PB and classical prognostic factors was found. We detected no statistically significant influence of surgical manipulation on CK19+ cells.
ISSN: 1078-0432
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Laboratory of Experimental Oncology
Multidisciplinary Breast Clinic Section (-)
Department of Oncology - miscellaneous
Department of Public Health miscellaneous
Surgical Oncology
× corresponding author
# (joint) last author

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