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Clinical and molecular markers of long-term survival after oligometastasis-directed stereotactic body radiotherapy (SBRT).

Publication ,  Journal Article
Wong, AC; Watson, SP; Pitroda, SP; Son, CH; Das, LC; Stack, ME; Uppal, A; Oshima, G; Khodarev, NN; Salama, JK; Weichselbaum, RR; Chmura, SJ
Published in: Cancer
July 15, 2016

BACKGROUND: The selection of patients for oligometastasis-directed ablative therapy remains a challenge. The authors report on clinical and molecular predictors of survival from a stereotactic body radiotherapy (SBRT) dose-escalation trial for oligometastases. METHODS: Patients who had from 1 to 5 metastases, a life expectancy of >3 months, and a Karnofsky performance status of >60 received escalating SBRT doses to all known cancer sites. Time to progression, progression-free survival, and overall survival (OS) were calculated at the completion of SBRT, and clinical predictors of OS were modeled. Primary tumor microRNA expression was analyzed to identify molecular predictors of OS. RESULTS: Sixty-one evaluable patients were enrolled from 2004 to 2009. The median follow-up was 2.3 years for all patients (range, 0.2-9.3 years) and 6.8 years for survivors (range, 2.0-9.3 years). The median, 2-year, and 5-year estimated OS were 2.4 years, 57%, and 32%, respectively. The rate of progression after SBRT was associated with an increased risk of death (hazard ratio [HR], 1.44; 95% confidence interval [CI], 1.24-1.82). The time from initial cancer diagnosis to metastasis (HR, 0.98; 95% CI, 0.98-0.99), the time from metastasis to SBRT (HR, 0.98; 95% CI, 0.98-0.99), and breast cancer histology (HR, 0.12; 95% CI, 0.07-0.37) were significant predictors of OS. In an exploratory analysis, a candidate classifier using expression levels of 3 microRNAs (miR-23b, miR-449a, and miR-449b) predicted survival among 17 patients who had primary tumor microRNA expression data available. CONCLUSIONS: A subset of oligometastatic patients achieves long-term survival after metastasis-directed SBRT. Clinical features and primary tumor microRNA expression profiling, if validated in an independent dataset, may help select oligometastatic patients most likely to benefit from metastasis-directed therapy. Cancer 2016;122:2242-50. © 2016 American Cancer Society.

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Published In

Cancer

DOI

EISSN

1097-0142

Publication Date

July 15, 2016

Volume

122

Issue

14

Start / End Page

2242 / 2250

Location

United States

Related Subject Headings

  • Treatment Outcome
  • Radiosurgery
  • Proportional Hazards Models
  • Prognosis
  • Oncology & Carcinogenesis
  • Neoplasms
  • Neoplasm Metastasis
  • MicroRNAs
  • Kaplan-Meier Estimate
  • Infant
 

Citation

APA
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Wong, A. C., Watson, S. P., Pitroda, S. P., Son, C. H., Das, L. C., Stack, M. E., … Chmura, S. J. (2016). Clinical and molecular markers of long-term survival after oligometastasis-directed stereotactic body radiotherapy (SBRT). Cancer, 122(14), 2242–2250. https://doi.org/10.1002/cncr.30058
Wong, Anthony C., Sydeaka P. Watson, Sean P. Pitroda, Christina H. Son, Lauren C. Das, Melinda E. Stack, Abhineet Uppal, et al. “Clinical and molecular markers of long-term survival after oligometastasis-directed stereotactic body radiotherapy (SBRT).Cancer 122, no. 14 (July 15, 2016): 2242–50. https://doi.org/10.1002/cncr.30058.
Wong AC, Watson SP, Pitroda SP, Son CH, Das LC, Stack ME, et al. Clinical and molecular markers of long-term survival after oligometastasis-directed stereotactic body radiotherapy (SBRT). Cancer. 2016 Jul 15;122(14):2242–50.
Wong, Anthony C., et al. “Clinical and molecular markers of long-term survival after oligometastasis-directed stereotactic body radiotherapy (SBRT).Cancer, vol. 122, no. 14, July 2016, pp. 2242–50. Pubmed, doi:10.1002/cncr.30058.
Wong AC, Watson SP, Pitroda SP, Son CH, Das LC, Stack ME, Uppal A, Oshima G, Khodarev NN, Salama JK, Weichselbaum RR, Chmura SJ. Clinical and molecular markers of long-term survival after oligometastasis-directed stereotactic body radiotherapy (SBRT). Cancer. 2016 Jul 15;122(14):2242–2250.
Journal cover image

Published In

Cancer

DOI

EISSN

1097-0142

Publication Date

July 15, 2016

Volume

122

Issue

14

Start / End Page

2242 / 2250

Location

United States

Related Subject Headings

  • Treatment Outcome
  • Radiosurgery
  • Proportional Hazards Models
  • Prognosis
  • Oncology & Carcinogenesis
  • Neoplasms
  • Neoplasm Metastasis
  • MicroRNAs
  • Kaplan-Meier Estimate
  • Infant