Journal
CANCER
Volume 116, Issue 8, Pages 1992-2000Publisher
WILEY
DOI: 10.1002/cncr.24990
Keywords
breast cancer; genomic testing; risk communication; recurrence risk; decision making; adjuvant therapy
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Funding
- American Cancer Society [MSRG-06-259-01-CPPB]
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BACKGROUND: Few studies have examined how patients understand and use genomic test results when deciding about treatment. This study examined how women receive and incorporate results of Oncotype DX, a genomic test that offers recurrence risk estimates, into decisions about adjuvant treatment for early stage breast cancer. METHODS: Participants in the cross-sectional study were 77 women with early stage, estrogen receptor-positive breast cancer with 0 to 3 positive lymph nodes who received Oncotype DX between 2004 and 2009. Mailed surveys, supplemented by medical chart review, assessed how women received and understood recurrence risk information based on the test. RESULTS: The most common test results were low (50%, 34 of 68) or intermediate (37%, 25 of 68) breast cancer recurrence risk. Most women accurately recalled their recurrence risk based on the test (71%) and felt they understood much of what they were told about it (67%). Approximately 25% of women recalled experiencing test-related distress. Women's perceived recurrence risk was associated with their actual genomic-based recurrence risks, having had a previous cancer diagnosis, and worry about recurrence. Women with high recurrence risk typically had chemotherapy (78%, 7 of 9), whereas only 2 with a low recurrence risk did (37%, 2 of 30). CONCLUSIONS: This is among the first studies to describe patients' experiences with genomic testing for recurrence risk. Although many women understood discussions about their genomic test results, a third reported not fully understanding these discussions, suggesting a need to aid and improve risk communication and treatment decision making. Cancer 2010;116:1992-2000. (C) 2010 American Cancer Society
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