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Outcomes of Active Surveillance for Ductal Carcinoma in Situ: A Computational Risk Analysis.

Publication ,  Journal Article
Ryser, MD; Worni, M; Turner, EL; Marks, JR; Durrett, R; Hwang, ES
Published in: J Natl Cancer Inst
May 2016

BACKGROUND: Ductal carcinoma in situ (DCIS) is a noninvasive breast lesion with uncertain risk for invasive progression. Usual care (UC) for DCIS consists of treatment upon diagnosis, thus potentially overtreating patients with low propensity for progression. One strategy to reduce overtreatment is active surveillance (AS), whereby DCIS is treated only upon detection of invasive disease. Our goal was to perform a quantitative evaluation of outcomes following an AS strategy for DCIS. METHODS: Age-stratified, 10-year disease-specific cumulative mortality (DSCM) for AS was calculated using a computational risk projection model based upon published estimates for natural history parameters, and Surveillance, Epidemiology, and End Results data for outcomes. AS projections were compared with the DSCM for patients who received UC. To quantify the propagation of parameter uncertainty, a 95% projection range (PR) was computed, and sensitivity analyses were performed. RESULTS: Under the assumption that AS cannot outperform UC, the projected median differences in 10-year DSCM between AS and UC when diagnosed at ages 40, 55, and 70 years were 2.6% (PR = 1.4%-5.1%), 1.5% (PR = 0.5%-3.5%), and 0.6% (PR = 0.0%-2.4), respectively. Corresponding median numbers of patients needed to treat to avert one breast cancer death were 38.3 (PR = 19.7-69.9), 67.3 (PR = 28.7-211.4), and 157.2 (PR = 41.1-3872.8), respectively. Sensitivity analyses showed that the parameter with greatest impact on DSCM was the probability of understaging invasive cancer at diagnosis. CONCLUSION: AS could be a viable management strategy for carefully selected DCIS patients, particularly among older age groups and those with substantial competing mortality risks. The effectiveness of AS could be markedly improved by reducing the rate of understaging.

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Published In

J Natl Cancer Inst

DOI

EISSN

1460-2105

Publication Date

May 2016

Volume

108

Issue

5

Location

United States

Related Subject Headings

  • Watchful Waiting
  • United States
  • SEER Program
  • Risk Factors
  • Risk Assessment
  • Research Design
  • Population Surveillance
  • Oncology & Carcinogenesis
  • Neoplasm Staging
  • Middle Aged
 

Citation

APA
Chicago
ICMJE
MLA
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Ryser, M. D., Worni, M., Turner, E. L., Marks, J. R., Durrett, R., & Hwang, E. S. (2016). Outcomes of Active Surveillance for Ductal Carcinoma in Situ: A Computational Risk Analysis. J Natl Cancer Inst, 108(5). https://doi.org/10.1093/jnci/djv372
Ryser, Marc D., Mathias Worni, Elizabeth L. Turner, Jeffrey R. Marks, Rick Durrett, and E Shelley Hwang. “Outcomes of Active Surveillance for Ductal Carcinoma in Situ: A Computational Risk Analysis.J Natl Cancer Inst 108, no. 5 (May 2016). https://doi.org/10.1093/jnci/djv372.
Ryser MD, Worni M, Turner EL, Marks JR, Durrett R, Hwang ES. Outcomes of Active Surveillance for Ductal Carcinoma in Situ: A Computational Risk Analysis. J Natl Cancer Inst. 2016 May;108(5).
Ryser, Marc D., et al. “Outcomes of Active Surveillance for Ductal Carcinoma in Situ: A Computational Risk Analysis.J Natl Cancer Inst, vol. 108, no. 5, May 2016. Pubmed, doi:10.1093/jnci/djv372.
Ryser MD, Worni M, Turner EL, Marks JR, Durrett R, Hwang ES. Outcomes of Active Surveillance for Ductal Carcinoma in Situ: A Computational Risk Analysis. J Natl Cancer Inst. 2016 May;108(5).
Journal cover image

Published In

J Natl Cancer Inst

DOI

EISSN

1460-2105

Publication Date

May 2016

Volume

108

Issue

5

Location

United States

Related Subject Headings

  • Watchful Waiting
  • United States
  • SEER Program
  • Risk Factors
  • Risk Assessment
  • Research Design
  • Population Surveillance
  • Oncology & Carcinogenesis
  • Neoplasm Staging
  • Middle Aged