1. Adjuvant chemotherapy and survival outcome in node-negative breast cancer with a 21-gene recurrence score of 26–30
   Shi-Ping Yang et al, 2021, Future Oncology CrossRef
2. Clinical outcomes in estrogen receptor-positive early-stage breast cancer patients with Recurrence Score 26-30: observational real-world cohort study
   Ofer Rotem et al, 2023, npj Breast Cancer CrossRef
3. Secondary Invasive Breast Events among Patients with Hormone-Positive Breast Cancer and High-Risk Oncotype DX Recurrence Scores 26–30 and ≥31
   Natalie F. Berger et al, 2021, Oncology CrossRef
4. Association of 21-gene recurrence score and locoregional recurrence in early breast cancer patients
   Yufei Zeng et al, 2022, Cancer Biomarkers CrossRef