How accurate is Oncotype DX testing?
Several studies have confirmed the relevance of Oncotype DX testing for invasive breast cancer. The NCCN guidelines state the level of evidence of Oncotype DX testing for analyzing chemotherapy benefit in postmenopausal women as level 1, which is the highest level.
Level 1 evidence means the opinion of researchers depends on the results of reviews of randomized controlled trials, the major standard for measuring the accuracy of a test.
The NCCN states the level of evidence in premenopausal women as 2A, meaning the recommendation depends on a summary of cohort studies, or studies following a group of participants over a period of time.
Fewer studies have shown the accuracy of Oncotype DX testing for prostate and colon cancer.
A study done by the American Society of Clinical Oncology showed that Oncotype DX can predict the 20-year risk of prostate cancer-specific mortality and the risks of distance spreading.
How much does an Oncotype DX test cost?
In most cases, it costs over 4,000 dollars. There are companies to offer insurance coverage and payment options for the procedure.
Conclusion
Oncotype DX tests are majorly used to predict the future activity of your cancer by observing certain genes found in cancer cells.
References
[1] https://www.nhs.uk/conditions/breast-cancer/
[2] https://www.cancer.org/cancer/prostate-cancer/about/what-is-prostate-cancer.html
[3] https://www.mayoclinic.org/diseases-conditions/colon-cancer/symptoms-causes/syc-20353669
[4] https://www.webmd.com/cancer/chemotherapy-what-to-expect
[5] https://www.medicalnewstoday.com/articles/types-of-radiation-therapy
[6] https://my.clevelandclinic.org/health/treatments/15245-hormone-therapy-for-menopause-symptoms