Circulating tumor cell number and prognosis in progressive castration-resistant prostate cancer Journal Article
| Authors: | Danila, D. C.; Heller, G.; Gignac, G. A.; Gonzalez-Espinoza, R.; Anand, A.; Tanaka, E.; Lilja, H.; Schwartz, L.; Larson, S.; Fleisher, M.; Scher, H. I. |
| Article Title: | Circulating tumor cell number and prognosis in progressive castration-resistant prostate cancer |
| Abstract: | Purpose: The development of tumor-specific markers to select targeted therapies and to assess clinical outcome remains a significant area of unmet need. We evaluated the association of baseline circulating tumor cell (CTC) number with clinical characteristics and survival in patients with castrate metastatic disease considered for different hormonal and cytotoxic therapies. Experimental Design: CTC were isolated by immunomagnetic capture from 7.5-mL samples of blood from 120 patients with progressive clinical castrate metastatic disease. We estimated the probability of survival over time by the Kaplan-Meier method. The concordance probability estimate was used to gauge the discriminatory strength of the informative prognostic factors. Results: Sixty-nine (57%) patients had five or more CTC whereas 30 (25%) had two cells or less. Higher CTC numbers were observed in patients with bone metastases relative to those with soft tissue disease and in patients who had received prior cytotoxic chemotherapy relative to those who had not. CTC counts were modestly correlated to measurements of tumor burden such as prostate-specific antigen and bone scan index, reflecting the percentage of boney skeleton involved with tumor. Baseline CTC number was strongly associated with survival, without a threshold effect, which increased further when baseline prostate-specific antigen and albumin were included. Conclusions: Baseline CTC was predictive of survival, with no threshold effect. The shedding of cells into the circulation represents an intrinsic property of the tumor, distinct from extent of disease, and provides unique information relative to prognosis. ©2007 American Association for Cancer Research. |
| Keywords: | adult; cancer survival; aged; aged, 80 and over; bone neoplasms; middle aged; survival rate; major clinical study; androgen; bone metastasis; cancer patient; cancer radiotherapy; prostate specific antigen; neoplasm recurrence, local; tumor markers, biological; prediction; cancer resistance; prostate cancer; kaplan-meiers estimate; prostate-specific antigen; prostatic neoplasms; alkaline phosphatase; survival time; albumin; evaluation; blood sampling; probability; prostatectomy; disease progression; cancer cell; immunomagnetic separation; cell isolation; cell count; castration; orchiectomy; kaplan meier method; glycoproteins; soft tissue neoplasms; soft tissue metastasis; serum albumin; neoplasm circulating cells |
| Journal Title: | Clinical Cancer Research |
| Volume: | 13 |
| Issue: | 23 |
| ISSN: | 1078-0432 |
| Publisher: | American Association for Cancer Research |
| Date Published: | 2007-12-01 |
| Start Page: | 7053 |
| End Page: | 7058 |
| Language: | English |
| DOI: | 10.1158/1078-0432.ccr-07-1506 |
| PUBMED: | 18056182 |
| PROVIDER: | scopus |
| DOI/URL: | |
| Notes: | --- - "Cited By (since 1996): 104" - "Export Date: 17 November 2011" - "CODEN: CCREF" - "Source: Scopus" |
Altmetric
Citation Impact
BMJ Impact Analytics
MSK Authors
Related MSK Work