Peer-Reviewed Publication
medRxiv2026September 22, 2026Journal Article

An AI Model Identifies Chemotherapy Benefit in Node-Negative HR+/HER2- Breast Cancer Patients from TAILORx, a Phase 3 Randomized Clinical Trial.

Nancy Chan1, Cerise Tang2, Dhruva Biswas2, Jungkyu Park2, Ken G Zeng2, Joseph Cappadona2, Chuwen Liu2, Alec McClean2, Jeroen Berrevoets2, Linus Bao2, Bartosz Machura2, Robert J Gray3, Victoria Wang4, Jan Witowski2, Krzysztof J Geras2, Joseph A Sparano5,
1NYU Langone Laura and Isaac Perlmutter Cancer Center New York, NY United States.
2Ataraxis AI.
3Biostatistics and Computational Biology, Dana-Farber Cancer Institute.
4ECOG-ACRIN Biostatistical Center, Dana-Farber Cancer Institute, Boston, MA, USA.
5Icahn School of Medicine at Mount Sinai, Tisch Cancer Institute, New York, NY, USA.

Abstract

BACKGROUND: The prescribing of adjuvant chemotherapy for patients with breast cancer must balance the survival benefit against treatment-related toxicities. TAILORx, a phase 3 randomized clinical trial, demonstrated that endocrine therapy alone was, on average, noninferior to chemoendocrine therapy for patients classified as intermediate risk by a 21-gene Recurrence Score (RS) assay. Uncertainty r…

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