Does RSClin provide additional information over classic clinico-pathologic scores (PREDICT 2.1, Influence, CTS-5)? A TEAM Pathology substudy.

Authors

null

Ana-Alicia Beltran-Bless

The Ottawa Hospital, Ottawa, ON, Canada

Ana-Alicia Beltran-Bless , Gregory Russell Pond , Jane Bayani , Sarah Barker , Melanie Spears , Elizabeth Mallon , Karen J Taylor , Annette Hasenburg , Christos Markopoulos , Luc Yves Dirix , Caroline M. Seynaeve , Cornelis J.H. Van De Velde , Daniel William Rea , Lisa Vandermeer , John Frederick Hilton , John Bartlett , Mark J. Clemons

Organizations

The Ottawa Hospital, Ottawa, ON, Canada, McMaster University, Hamilton, ON, Canada, Ontario Institute for Cancer Research, Toronto, ON, Canada, Diagnostic Development, Ontario Institute for Cancer Research, Toronto. ON, Canada, Toronto, ON, Canada, Department of Pathology, Glasgow, United Kingdom, Glasgow, United Kingdom, Cancer Research UK Scotland Centre, University of Edinburgh, Edinburgh, United Kingdom, University Medical Center Mainz, Mainz, Germany, National and Kapodistrian University of Athens, Medical School, Athens, Greece, Athens, Greece, GZA Ziekenhuizen Antwerpen campus Sint-Augustinus, Antwerpen, Belgium, Erasmus MC - Kanker Instituut locatie Danïel den Hoed, Rotterdam, Netherlands, Leiden University Medical Center, Leiden, Netherlands, Cancer Research UK Institute for Cancer Studies, Birmingham, United Kingdom, Ottawa Hospital Research Institute, Ottawa, ON, Canada, The Ottawa Hospital Cancer Center, Ottawa, ON, Canada, The Ottawa Hospital Cancer Centre, Ottawa, ON, Canada

Research Funding

No funding received
None.

Background: Gene-expression profiling tests (e.g. Oncotype, Mammaprint, Prosignia, Breast Cancer Index and EndoPredict) are widely used in the care of patients with early-stage hormone positive breast cancer (node negative or 1-3 lymph nodes). However, these tests are resource intensive, and few studies have compared their value with either free and widely available clinico-pathologic risk calculators (e.g. PREDICT 2.1, INFLUENCE 2.0, and CTS-5) or tools that combine genomic testing with clinico-pathologic data (e.g. RSClin). The TEAM pathology substudy population was used to compare these different predicted model scores with outcomes. Methods: The TEAM pathology study consists of 3284 postmenopausal hormone positive breast cancer patients treated with either exemestane or tamoxifen followed by exemestane. Accrual was from 2001 to 2006. Genes comprising the multi-parametric Oncotype Dx were used to train signatures to create true assay results. Patient data was then used to calculate recurrence scores through various tools. This included clinico-pathologic models and their respective endpoints PREDICT 2.1 (overall survival at 5 years), INFLUENCE 2.0 (distant metastasis at 5 years), CTS-5 (distant recurrence risk at year 5-10), the purely genomic Oncotype Dx trained results (distant recurrence risk at 9 years), as well as the new clinico-pathologic RSClin (distant recurrence risk at 10 years). We compared the level of association between these predictive model scores using Spearman correlation coefficients. The prognostic ability of each model was contrasted for each outcome using Harrell’s C-statistic. Results: Results were available for CTS-5 (3022 patients), INFLUENCE 2.0 (3485 patients), ODx-trained (3825 patients), and RSClin (3029 patients). Correlation coefficients showed low correlation between Influence (r= 0.25) and CTS-5 (r= 0.17) with Oncotype-Dx trained results, and high correlation between RSClin (r = 0.84) and Oncotype-Dx trained results. The concordance index was similar (0.65 to 0.68) for all models with distant metastasis-free survival as the outcome. Analysis is ongoing and further results will be available at the time of presentation. Conclusions: Other clinico-pathologic tools such as Influence 2.0 and CTS-5 have good prognostic ability when compared to Oncotype Dx-trained results and RSClin.

ρ
n
InfluenceRS Clin ScoresCTS5
Oncotype Scores0.25
3485
0.84
3029
0.17
3022
Influence-0.56
2913
0.82
2913
RS Clin Scores--0.53
3022

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Abstract Details

Meeting

2023 ASCO Annual Meeting

Session Type

Poster Session

Session Title

Breast Cancer—Local/Regional/Adjuvant

Track

Breast Cancer

Sub Track

Adjuvant Therapy

Citation

J Clin Oncol 41, 2023 (suppl 16; abstr 533)

DOI

10.1200/JCO.2023.41.16_suppl.533

Abstract #

533

Poster Bd #

363

Abstract Disclosures