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Published in: BMC Cancer 1/2012

Open Access 01-12-2012 | Research article

Persistent tumor cells in bone marrow of non-metastatic breast cancer patients after primary surgery are associated with inferior outcome

Authors: Kjersti Tjensvoll, Satu Oltedal, Reino Heikkilä, Jan Terje Kvaløy, Bjørnar Gilje, James M Reuben, Rune Smaaland, Oddmund Nordgård

Published in: BMC Cancer | Issue 1/2012

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Abstract

Background

To investigate the prognostic significance of disseminated tumor cells (DTCs) in bone marrow (BM) from non-metastatic breast cancer patients before and after surgery.

Methods

Patients with non-metastatic breast cancer were consecutively recruited to this project during the years 1998–2000. Real-time RT-PCR quantification of a DTC multimarker panel consisting of cytokeratin 19, mammaglobin A and TWIST1 mRNA was performed in BM samples obtained from 154 patients three weeks (BM2) and/or six months after surgery (BM3). The results were compared to previously published data from pre-operative BM analyses for the same patients.

Results

DTCs were identified in post-operative BM samples (BM2 and/or BM3) from 23 (15%) of the 154 patients investigated. During a median follow-up of 98 months, 10 (44%) of these patients experienced systemic relapse as compared to 16 (12%) of 131 DTC-negative patients. Kaplan-Meier estimates of systemic recurrence-free- and breast-cancer specific survival demonstrated significantly shorter survival for patients with persistent DTCs in BM after surgery (p≤0.001). By multivariate Cox regression analyses, persistent DTCs after surgery was an independent predictor of both systemic recurrence-free- (HR = 5.4, p < 0.001) and breast-cancer specific survival (HR = 5.3, p < 0.001). Furthermore, the prognostic value of DTCs in BM was similar for pre- and post surgery samples. However, patients with DTCs both before and after surgery (BM1 and BM2/3) had a particularly poor prognosis (systemic recurrence-free survival: HR = 7.2, p < 0.0001 and breast-cancer specific survival: HR = 8.0, p < 0.0001).

Conclusions

Detection of persistent DTCs in BM samples obtained after surgery identified non-metastatic breast cancer patients at high risk for systemic relapse, and with reduced breast-cancer specific survival. Furthermore, patients with positive DTC status both before and after surgery had a particularly poor prognosis.
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Literature
1.
go back to reference Braun S, Pantel K, Muller P, Janni W, Hepp F, Kentenich CR, Gastroph S, Wischnik A, Dimpfl T, Kindermann G, et al: Cytokeratin-positive cells in the bone marrow and survival of patients with stage I, II, or III breast cancer. N Engl J Med. 2000, 342 (8): 525-533. 10.1056/NEJM200002243420801.CrossRefPubMed Braun S, Pantel K, Muller P, Janni W, Hepp F, Kentenich CR, Gastroph S, Wischnik A, Dimpfl T, Kindermann G, et al: Cytokeratin-positive cells in the bone marrow and survival of patients with stage I, II, or III breast cancer. N Engl J Med. 2000, 342 (8): 525-533. 10.1056/NEJM200002243420801.CrossRefPubMed
2.
go back to reference Braun S, Vogl FD, Naume B, Janni W, Osborne MP, Coombes RC, Schlimok G, Diel IJ, Gerber B, Gebauer G, et al: A pooled analysis of bone marrow micrometastasis in breast cancer. N Engl J Med. 2005, 353 (8): 793-802. 10.1056/NEJMoa050434.CrossRefPubMed Braun S, Vogl FD, Naume B, Janni W, Osborne MP, Coombes RC, Schlimok G, Diel IJ, Gerber B, Gebauer G, et al: A pooled analysis of bone marrow micrometastasis in breast cancer. N Engl J Med. 2005, 353 (8): 793-802. 10.1056/NEJMoa050434.CrossRefPubMed
3.
go back to reference Diel IJ, Kaufmann M, Costa SD, Holle R, von Minckwitz G, Solomayer EF, Kaul S, Bastert G: Micrometastatic breast cancer cells in bone marrow at primary surgery: prognostic value in comparison with nodal status. J Natl Cancer Inst. 1996, 88 (22): 1652-1658. 10.1093/jnci/88.22.1652.CrossRefPubMed Diel IJ, Kaufmann M, Costa SD, Holle R, von Minckwitz G, Solomayer EF, Kaul S, Bastert G: Micrometastatic breast cancer cells in bone marrow at primary surgery: prognostic value in comparison with nodal status. J Natl Cancer Inst. 1996, 88 (22): 1652-1658. 10.1093/jnci/88.22.1652.CrossRefPubMed
4.
go back to reference Naume B, Wiedswang G, Borgen E, Kvalheim G, Karesen R, Qvist H, Janbu J, Harbitz T, Nesland JM: The prognostic value of isolated tumor cells in bone marrow in breast cancer patients: evaluation of morphological categories and the number of clinically significant cells. Clin Cancer Res. 2004, 10 (9): 3091-3097. 10.1158/1078-0432.CCR-03-0373.CrossRefPubMed Naume B, Wiedswang G, Borgen E, Kvalheim G, Karesen R, Qvist H, Janbu J, Harbitz T, Nesland JM: The prognostic value of isolated tumor cells in bone marrow in breast cancer patients: evaluation of morphological categories and the number of clinically significant cells. Clin Cancer Res. 2004, 10 (9): 3091-3097. 10.1158/1078-0432.CCR-03-0373.CrossRefPubMed
5.
go back to reference Wiedswang G, Borgen E, Karesen R, Kvalheim G, Nesland JM, Qvist H, Schlichting E, Sauer T, Janbu J, Harbitz T, et al: Detection of isolated tumor cells in bone marrow is an independent prognostic factor in breast cancer. J Clin Oncol. 2003, 21 (18): 3469-3478. 10.1200/JCO.2003.02.009.CrossRefPubMed Wiedswang G, Borgen E, Karesen R, Kvalheim G, Nesland JM, Qvist H, Schlichting E, Sauer T, Janbu J, Harbitz T, et al: Detection of isolated tumor cells in bone marrow is an independent prognostic factor in breast cancer. J Clin Oncol. 2003, 21 (18): 3469-3478. 10.1200/JCO.2003.02.009.CrossRefPubMed
6.
go back to reference Wiedswang G, Borgen E, Karesen R, Qvist H, Janbu J, Kvalheim G, Nesland JM, Naume B: Isolated tumor cells in bone marrow three years after diagnosis in disease-free breast cancer patients predict unfavorable clinical outcome. Clin Cancer Res. 2004, 10 (16): 5342-5348. 10.1158/1078-0432.CCR-04-0245.CrossRefPubMed Wiedswang G, Borgen E, Karesen R, Qvist H, Janbu J, Kvalheim G, Nesland JM, Naume B: Isolated tumor cells in bone marrow three years after diagnosis in disease-free breast cancer patients predict unfavorable clinical outcome. Clin Cancer Res. 2004, 10 (16): 5342-5348. 10.1158/1078-0432.CCR-04-0245.CrossRefPubMed
7.
go back to reference Janni W, Rack B, Schindlbeck C, Strobl B, Rjosk D, Braun S, Sommer H, Pantel K, Gerber B, Friese K: The persistence of isolated tumor cells in bone marrow from patients with breast carcinoma predicts an increased risk for recurrence. Cancer. 2005, 103 (5): 884-891. 10.1002/cncr.20834.CrossRefPubMed Janni W, Rack B, Schindlbeck C, Strobl B, Rjosk D, Braun S, Sommer H, Pantel K, Gerber B, Friese K: The persistence of isolated tumor cells in bone marrow from patients with breast carcinoma predicts an increased risk for recurrence. Cancer. 2005, 103 (5): 884-891. 10.1002/cncr.20834.CrossRefPubMed
8.
go back to reference Janni W, Hepp F, Rjosk D, Kentenich C, Strobl B, Schindlbeck C, Hantschmann P, Sommer H, Pantel K, Braun S: The fate and prognostic value of occult metastatic cells in the bone marrow of patients with breast carcinoma between primary treatment and recurrence. Cancer. 2001, 92 (1): 46-53. 10.1002/1097-0142(20010701)92:1<46::AID-CNCR1290>3.0.CO;2-6.CrossRefPubMed Janni W, Hepp F, Rjosk D, Kentenich C, Strobl B, Schindlbeck C, Hantschmann P, Sommer H, Pantel K, Braun S: The fate and prognostic value of occult metastatic cells in the bone marrow of patients with breast carcinoma between primary treatment and recurrence. Cancer. 2001, 92 (1): 46-53. 10.1002/1097-0142(20010701)92:1<46::AID-CNCR1290>3.0.CO;2-6.CrossRefPubMed
9.
go back to reference Slade MJ, Singh A, Smith BM, Tripuraneni G, Hall E, Peckitt C, Fox S, Graham H, Luchtenborg M, Sinnett HD, et al: Persistence of bone marrow micrometastases in patients receiving adjuvant therapy for breast cancer: results at 4 years. Int J Cancer. 2005, 114 (1): 94-100. 10.1002/ijc.20655.CrossRefPubMed Slade MJ, Singh A, Smith BM, Tripuraneni G, Hall E, Peckitt C, Fox S, Graham H, Luchtenborg M, Sinnett HD, et al: Persistence of bone marrow micrometastases in patients receiving adjuvant therapy for breast cancer: results at 4 years. Int J Cancer. 2005, 114 (1): 94-100. 10.1002/ijc.20655.CrossRefPubMed
10.
go back to reference Daskalaki A, Agelaki S, Perraki M, Apostolaki S, Xenidis N, Stathopoulos E, Kontopodis E, Hatzidaki D, Mavroudis D, Georgoulias V: Detection of cytokeratin-19 mRNA-positive cells in the peripheral blood and bone marrow of patients with operable breast cancer. Br J Cancer. 2009, 101 (4): 589-597. 10.1038/sj.bjc.6605183.CrossRefPubMedPubMedCentral Daskalaki A, Agelaki S, Perraki M, Apostolaki S, Xenidis N, Stathopoulos E, Kontopodis E, Hatzidaki D, Mavroudis D, Georgoulias V: Detection of cytokeratin-19 mRNA-positive cells in the peripheral blood and bone marrow of patients with operable breast cancer. Br J Cancer. 2009, 101 (4): 589-597. 10.1038/sj.bjc.6605183.CrossRefPubMedPubMedCentral
11.
go back to reference Becker S, Becker-Pergola G, Wallwiener D, Solomayer EF, Fehm T: Detection of cytokeratin-positive cells in the bone marrow of breast cancer patients undergoing adjuvant therapy. Breast Cancer Res Treat. 2006, 97 (1): 91-96. 10.1007/s10549-005-9095-6.CrossRefPubMed Becker S, Becker-Pergola G, Wallwiener D, Solomayer EF, Fehm T: Detection of cytokeratin-positive cells in the bone marrow of breast cancer patients undergoing adjuvant therapy. Breast Cancer Res Treat. 2006, 97 (1): 91-96. 10.1007/s10549-005-9095-6.CrossRefPubMed
12.
go back to reference Janni W, Vogl FD, Wiedswang G, Synnestvedt M, Fehm T, Jückstock J, Borgen E, Rack B, Braun S, Sommer H, et al: Persistence of disseminated tumor cells in the bone marrow of breast cancer patients predicts increased risk for relapse–a European pooled analysis. Clin Cancer Res. 2011, 17 (9): 2967-2976. 10.1158/1078-0432.CCR-10-2515.CrossRefPubMed Janni W, Vogl FD, Wiedswang G, Synnestvedt M, Fehm T, Jückstock J, Borgen E, Rack B, Braun S, Sommer H, et al: Persistence of disseminated tumor cells in the bone marrow of breast cancer patients predicts increased risk for relapse–a European pooled analysis. Clin Cancer Res. 2011, 17 (9): 2967-2976. 10.1158/1078-0432.CCR-10-2515.CrossRefPubMed
13.
go back to reference Balic M, Lin H, Young L, Hawes D, Giuliano A, McNamara G, Datar RH, Cote RJ: Most early disseminated cancer cells detected in bone marrow of breast cancer patients have a putative breast cancer stem cell phenotype. Clin Cancer Res. 2006, 12 (19): 5615-5621. 10.1158/1078-0432.CCR-06-0169.CrossRefPubMed Balic M, Lin H, Young L, Hawes D, Giuliano A, McNamara G, Datar RH, Cote RJ: Most early disseminated cancer cells detected in bone marrow of breast cancer patients have a putative breast cancer stem cell phenotype. Clin Cancer Res. 2006, 12 (19): 5615-5621. 10.1158/1078-0432.CCR-06-0169.CrossRefPubMed
14.
go back to reference Reuben JM, Lee BN, Gao H, Cohen EN, Mego M, Giordano A, Wang X, Lodhi A, Krishnamurthy S, Hortobagyi GN, et al: Primary breast cancer patients with high risk clinicopathologic features have high percentages of bone marrow epithelial cells with ALDH activity and CD44(+)CD24(lo) cancer stem cell phenotype. Eur J Cancer. 2011, 47 (10): 1527-1536. 10.1016/j.ejca.2011.01.011.CrossRefPubMedPubMedCentral Reuben JM, Lee BN, Gao H, Cohen EN, Mego M, Giordano A, Wang X, Lodhi A, Krishnamurthy S, Hortobagyi GN, et al: Primary breast cancer patients with high risk clinicopathologic features have high percentages of bone marrow epithelial cells with ALDH activity and CD44(+)CD24(lo) cancer stem cell phenotype. Eur J Cancer. 2011, 47 (10): 1527-1536. 10.1016/j.ejca.2011.01.011.CrossRefPubMedPubMedCentral
15.
go back to reference Dean M, Fojo T, Bates S: Tumour stem cells and drug resistance. Nat Rev Cancer. 2005, 5 (4): 275-284. 10.1038/nrc1590.CrossRefPubMed Dean M, Fojo T, Bates S: Tumour stem cells and drug resistance. Nat Rev Cancer. 2005, 5 (4): 275-284. 10.1038/nrc1590.CrossRefPubMed
16.
go back to reference Tjensvoll K, Oltedal S, Farmen RK, Shammas FV, Heikkila R, Kvaloy JT, Gilje B, Smaaland R, Nordgard O: Disseminated tumor cells in bone marrow assessed by TWIST1, cytokeratin 19, and mammaglobin A mRNA predict clinical outcome in operable breast cancer patients. Clin Breast Cancer. 2010, 10 (5): 378-384. 10.3816/CBC.2010.n.050.CrossRefPubMed Tjensvoll K, Oltedal S, Farmen RK, Shammas FV, Heikkila R, Kvaloy JT, Gilje B, Smaaland R, Nordgard O: Disseminated tumor cells in bone marrow assessed by TWIST1, cytokeratin 19, and mammaglobin A mRNA predict clinical outcome in operable breast cancer patients. Clin Breast Cancer. 2010, 10 (5): 378-384. 10.3816/CBC.2010.n.050.CrossRefPubMed
17.
go back to reference McShane LM, Altman DG, Sauerbrei W, Taube SE, Gion M, Clark GM: Reporting recommendations for tumor marker prognostic studies. J Clin Oncol. 2005, 23 (36): 9067-9072. 10.1200/JCO.2004.01.0454.CrossRefPubMed McShane LM, Altman DG, Sauerbrei W, Taube SE, Gion M, Clark GM: Reporting recommendations for tumor marker prognostic studies. J Clin Oncol. 2005, 23 (36): 9067-9072. 10.1200/JCO.2004.01.0454.CrossRefPubMed
18.
go back to reference Farmen RK, Nordgard O, Gilje B, Shammas FV, Kvaloy JT, Oltedal S, Heikkila R: Bone marrow cytokeratin 19 mRNA level is an independent predictor of relapse-free survival in operable breast cancer patients. Breast Cancer Res Treat. 2008, 108 (2): 251-258. 10.1007/s10549-007-9592-x.CrossRefPubMed Farmen RK, Nordgard O, Gilje B, Shammas FV, Kvaloy JT, Oltedal S, Heikkila R: Bone marrow cytokeratin 19 mRNA level is an independent predictor of relapse-free survival in operable breast cancer patients. Breast Cancer Res Treat. 2008, 108 (2): 251-258. 10.1007/s10549-007-9592-x.CrossRefPubMed
19.
go back to reference Tjensvoll K, Gilje B, Oltedal S, Shammas FV, Kvaloy JT, Heikkila R, Nordgard O: A small subgroup of operable breast cancer patients with poor prognosis identified by quantitative real-time RT-PCR detection of mammaglobin A and trefoil factor 1 mRNA expression in bone marrow. Breast Cancer Res Treat. 2009, 116 (2): 329-338. 10.1007/s10549-008-0204-1.CrossRefPubMed Tjensvoll K, Gilje B, Oltedal S, Shammas FV, Kvaloy JT, Heikkila R, Nordgard O: A small subgroup of operable breast cancer patients with poor prognosis identified by quantitative real-time RT-PCR detection of mammaglobin A and trefoil factor 1 mRNA expression in bone marrow. Breast Cancer Res Treat. 2009, 116 (2): 329-338. 10.1007/s10549-008-0204-1.CrossRefPubMed
20.
go back to reference Shammas FV, Van Eekelen JA, Wee L, Heikkila R, Osland A: Sensitive and quantitative one-step polymerase chain reaction using capillary electrophoresis and fluorescence detection for measuring cytokeratin 19 expression. Scand J Clin Lab Invest. 1999, 59 (8): 635-642. 10.1080/00365519950185139.CrossRefPubMed Shammas FV, Van Eekelen JA, Wee L, Heikkila R, Osland A: Sensitive and quantitative one-step polymerase chain reaction using capillary electrophoresis and fluorescence detection for measuring cytokeratin 19 expression. Scand J Clin Lab Invest. 1999, 59 (8): 635-642. 10.1080/00365519950185139.CrossRefPubMed
21.
go back to reference Raimondi C, Gianni W, Cortesi E, Gazzaniga P: Cancer stem cells and epithelial-mesenchymal transition: revisiting minimal residual disease. Curr Cancer Drug Targets. 2010, 10 (5): 496-508. 10.2174/156800910791517154.CrossRefPubMed Raimondi C, Gianni W, Cortesi E, Gazzaniga P: Cancer stem cells and epithelial-mesenchymal transition: revisiting minimal residual disease. Curr Cancer Drug Targets. 2010, 10 (5): 496-508. 10.2174/156800910791517154.CrossRefPubMed
22.
go back to reference Fehm T, Braun S, Muller V, Janni W, Gebauer G, Marth C, Schindlbeck C, Wallwiener D, Borgen E, Naume B, et al: A concept for the standardized detection of disseminated tumor cells in bone marrow from patients with primary breast cancer and its clinical implementation. Cancer. 2006, 107 (5): 885-892. 10.1002/cncr.22076.CrossRefPubMed Fehm T, Braun S, Muller V, Janni W, Gebauer G, Marth C, Schindlbeck C, Wallwiener D, Borgen E, Naume B, et al: A concept for the standardized detection of disseminated tumor cells in bone marrow from patients with primary breast cancer and its clinical implementation. Cancer. 2006, 107 (5): 885-892. 10.1002/cncr.22076.CrossRefPubMed
23.
go back to reference Ignatiadis M, Kallergi G, Ntoulia M, Perraki M, Apostolaki S, Kafousi M, Chlouverakis G, Stathopoulos E, Lianidou E, Georgoulias V, et al: Prognostic value of the molecular detection of circulating tumor cells using a multimarker reverse transcription-PCR assay for cytokeratin 19, mammaglobin A, and HER2 in early breast cancer. Clin Cancer Res. 2008, 14 (9): 2593-2600. 10.1158/1078-0432.CCR-07-4758.CrossRefPubMed Ignatiadis M, Kallergi G, Ntoulia M, Perraki M, Apostolaki S, Kafousi M, Chlouverakis G, Stathopoulos E, Lianidou E, Georgoulias V, et al: Prognostic value of the molecular detection of circulating tumor cells using a multimarker reverse transcription-PCR assay for cytokeratin 19, mammaglobin A, and HER2 in early breast cancer. Clin Cancer Res. 2008, 14 (9): 2593-2600. 10.1158/1078-0432.CCR-07-4758.CrossRefPubMed
24.
go back to reference Pachmann K, Camara O, Kavallaris A, Krauspe S, Malarski N, Gajda M, Kroll T, Jorke C, Hammer U, Altendorf-Hofmann A, et al: Monitoring the response of circulating epithelial tumor cells to adjuvant chemotherapy in breast cancer allows detection of patients at risk of early relapse. J Clin Oncol. 2008, 26 (8): 1208-1215. 10.1200/JCO.2007.13.6523.CrossRefPubMed Pachmann K, Camara O, Kavallaris A, Krauspe S, Malarski N, Gajda M, Kroll T, Jorke C, Hammer U, Altendorf-Hofmann A, et al: Monitoring the response of circulating epithelial tumor cells to adjuvant chemotherapy in breast cancer allows detection of patients at risk of early relapse. J Clin Oncol. 2008, 26 (8): 1208-1215. 10.1200/JCO.2007.13.6523.CrossRefPubMed
25.
go back to reference Van der Auwera I, Peeters D, Benoy IH, Elst HJ, Van Laere SJ, Prove A, Maes H, Huget P, van Dam P, Vermeulen PB, et al: Circulating tumour cell detection: a direct comparison between the Cell Search System, the AdnaTest and CK-19/mammaglobin RT-PCR in patients with metastatic breast cancer. Br J Cancer. 2009, 102 (2): 276-284.CrossRefPubMedPubMedCentral Van der Auwera I, Peeters D, Benoy IH, Elst HJ, Van Laere SJ, Prove A, Maes H, Huget P, van Dam P, Vermeulen PB, et al: Circulating tumour cell detection: a direct comparison between the Cell Search System, the AdnaTest and CK-19/mammaglobin RT-PCR in patients with metastatic breast cancer. Br J Cancer. 2009, 102 (2): 276-284.CrossRefPubMedPubMedCentral
26.
go back to reference Wiedswang G, Borgen E, Schirmer C, Karesen R, Kvalheim G, Nesland JM, Naume B: Comparison of the clinical significance of occult tumor cells in blood and bone marrow in breast cancer. Int J Cancer. 2006, 118 (8): 2013-2019. 10.1002/ijc.21576.CrossRefPubMed Wiedswang G, Borgen E, Schirmer C, Karesen R, Kvalheim G, Nesland JM, Naume B: Comparison of the clinical significance of occult tumor cells in blood and bone marrow in breast cancer. Int J Cancer. 2006, 118 (8): 2013-2019. 10.1002/ijc.21576.CrossRefPubMed
27.
go back to reference Benoy IH, Elst H, Philips M, Wuyts H, Van Dam P, Scharpe S, Van Marck E, Vermeulen PB, Dirix LY: Real-time RT-PCR detection of disseminated tumour cells in bone marrow has superior prognostic significance in comparison with circulating tumour cells in patients with breast cancer. Br J Cancer. 2006, 94 (5): 672-680.PubMedPubMedCentral Benoy IH, Elst H, Philips M, Wuyts H, Van Dam P, Scharpe S, Van Marck E, Vermeulen PB, Dirix LY: Real-time RT-PCR detection of disseminated tumour cells in bone marrow has superior prognostic significance in comparison with circulating tumour cells in patients with breast cancer. Br J Cancer. 2006, 94 (5): 672-680.PubMedPubMedCentral
28.
go back to reference Muller V, Stahmann N, Riethdorf S, Rau T, Zabel T, Goetz A, Janicke F, Pantel K: Circulating tumor cells in breast cancer: correlation to bone marrow micrometastases, heterogeneous response to systemic therapy and low proliferative activity. Clin Cancer Res. 2005, 11 (10): 3678-3685. 10.1158/1078-0432.CCR-04-2469.CrossRefPubMed Muller V, Stahmann N, Riethdorf S, Rau T, Zabel T, Goetz A, Janicke F, Pantel K: Circulating tumor cells in breast cancer: correlation to bone marrow micrometastases, heterogeneous response to systemic therapy and low proliferative activity. Clin Cancer Res. 2005, 11 (10): 3678-3685. 10.1158/1078-0432.CCR-04-2469.CrossRefPubMed
29.
go back to reference Pantel K, Alix-Panabieres C, Riethdorf S: Cancer micrometastases. Nat Rev Clin Oncol. 2009, 6 (6): 339-351. 10.1038/nrclinonc.2009.44.CrossRefPubMed Pantel K, Alix-Panabieres C, Riethdorf S: Cancer micrometastases. Nat Rev Clin Oncol. 2009, 6 (6): 339-351. 10.1038/nrclinonc.2009.44.CrossRefPubMed
30.
go back to reference Harris L, Fritsche H, Mennel R, Mennel R, Norton L, Ravdin P, Taube S, Somerfield MR, Hayes DF, Bast RC, Jr: Cancer micrometastases. Nat Rev Clin Oncol. 2009, 6 (6): 339-351. 10.1038/nrclinonc.2009.44.CrossRef Harris L, Fritsche H, Mennel R, Mennel R, Norton L, Ravdin P, Taube S, Somerfield MR, Hayes DF, Bast RC, Jr: Cancer micrometastases. Nat Rev Clin Oncol. 2009, 6 (6): 339-351. 10.1038/nrclinonc.2009.44.CrossRef
Metadata
Title
Persistent tumor cells in bone marrow of non-metastatic breast cancer patients after primary surgery are associated with inferior outcome
Authors
Kjersti Tjensvoll
Satu Oltedal
Reino Heikkilä
Jan Terje Kvaløy
Bjørnar Gilje
James M Reuben
Rune Smaaland
Oddmund Nordgård
Publication date
01-12-2012
Publisher
BioMed Central
Published in
BMC Cancer / Issue 1/2012
Electronic ISSN: 1471-2407
DOI
https://doi.org/10.1186/1471-2407-12-190

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