NCT06484725

Oncotype DX in BRCA-mutated Breast Cancer Patients: Our Experience. A Retrospective Observational Monocentric Study

• Status: Completed
• Phase: —
• Study type: Observational
• Enrollment: 250 (actual)
• Sponsor: IRCCS San Raffaele · Academic / Other
• Sex: Female
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

The study aims to evaluate the distribution of the Oncotype DX RS® genomic test in patients with ER-positive and HER2-negative breast cancer treated from January 2012 to December 2021, focusing on patients presenting germline mutations.

Detailed description

In the past decades, genetic testing for cancer susceptibility has become essential in breast cancer (BC) management. Up to 10% of BC cases are associated with an inherited mutation in various genes, especially BRCA 1 and BRCA 2. Estrogen receptor (ER) positivity is observed in 22% on BRCA 1 and 77% of BRCA 2 mutation carrier; moreover, other genes are strongly related to ER-positive cancer. Oncotype DX assay (Genomic Health, Inc, Redwood City, Calif) is a 21 gene panel developed to predict the risk of tumor recurrence in patients with ER-positive and human epidermal growth factor 2 (HER2)- negative BC; nowadays, this test represents a standard of care to guide adjuvant chemotherapy decision recommended in several guidelines. According to Oncotype DX Recurrent Score (RS)® a high RS shows a worse prognosis and predicts chemotherapy benefit in patients with ER-positive HER2-negative BC. Combining Oncotype DX RS® with other risk factor elements, in particular germline mutations, could help to select patients who would benefit from an appropriate adjuvant therapy. This retrospective observational study aims to evaluate Oncotype DX RS® distribution in ER-positive HER2-negative BC patients treated from January 2012 to December 2021, focusing on patients harboring mutation in BC-associated genes compared to the general population.

Conditions

• Breast Cancer
• Genetic Predisposition

Interventions

Type	Name	Description
GENETIC	Oncotype DX assay	Oncotype DX assay (Genomic Health, Inc, Redwood City, Calif) is a 21 gene panel developed to predict the risk of tumor recurrence in patients with ER-positive and human epidermal growth factor 2 (HER2)- negative breast cancer (BC); nowadays, this test represents a standard of care to guide adjuvant chemotherapy decision recommended in several guidelines. According to Oncotype DX Recurrent Score (RS)® a high RS shows a worse prognosis and predicts chemotherapy benefit in patients with ER-positive HER2-negative BC.

Timeline

• Start date: 2012-01-01
• Primary completion: 2021-12-31
• Completion: 2022-06-30
• First posted: 2024-07-03
• Last updated: 2024-07-03

Locations

1 site across 1 country: Italy