Prognostic value of HER2DX in early-stage HER2-positive breast cancer : a comprehensive analysis of 757 patients in the Sweden Cancerome Analysis Network-Breast dataset (SCAN-B)

Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved..

BACKGROUND: The HER2DX risk-score has undergone rigorous validation in prior investigations involving patients with early-stage human epidermal growth factor receptor 2 (HER2)-positive (HER2+) breast cancer. In this study, we present the outcomes of the HER2DX risk-score within the most recent release of the Sweden Cancerome Analysis Network-Breast (SCAN-B) HER2+ cohort. This updated examination benefits from a larger patient sample, an extended follow-up duration, and detailed treatment information.

MATERIALS AND METHODS: Clinical and RNAseq data from the SCAN-B dataset were retrieved from Gene Expression Omnibus (GSE81538). Among the 6600 patients, 819 had HER2+ breast cancer, with 757 individuals with research-based HER2DX risk-scores and corresponding survival outcomes. The HER2DX risk-score was evaluated (i) as a continuous variable and (ii) using predefined cut-offs. The primary endpoint for this study was overall survival (OS). The Kaplan-Meier method and Cox models were used to estimate OS and a multistate model with four states was fitted to better characterize patients' follow-up.

RESULTS: The median follow-up time was 7.5 years (n = 757). The most common systemic therapy was chemotherapy with trastuzumab (82.0%) and most tumors were classified as T1-T2 (97.1%). The HER2DX risk-score as a continuous variable was significantly associated with OS after adjustment for clinical variables and treatment regimen [hazard ratios (HR) per 10-unit increment = 1.31, 95% confidence interval (CI) 1.13-1.51, P < 0.001] as well as within predefined risk groups (high versus low; HR = 2.57, 95% CI 1.36-4.85, P < 0.001). Patients classified as HER2DX high-risk also had higher risk of (i) breast cancer recurrence and (ii) death without previous recurrence. Within the subgroup of HER2+ T1N0 tumors (n = 297), those classified as high-risk demonstrated inferior OS compared to low-risk tumors (7-year OS 77.8% versus 96.8%, P < 0.001). The HER2DX mRNA ERBB2 score was associated with clinical HER2 status (area under the receiver operating characteristic curve = 0.91).

CONCLUSIONS: In patients with early-stage HER2+ breast cancer, HER2DX risk-score provides prognostic information beyond clinicopathological variables, including treatment regimen with or without trastuzumab.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:9

Enthalten in:

ESMO open - 9(2024), 3 vom: 14. März, Seite 102388

Sprache:

Englisch

Beteiligte Personen:

Villacampa, G [VerfasserIn]
Pascual, T [VerfasserIn]
Brasó-Maristany, F [VerfasserIn]
Paré, L [VerfasserIn]
Martínez-Sáez, O [VerfasserIn]
Cortés, J [VerfasserIn]
Ciruelos, E [VerfasserIn]
Martin, M [VerfasserIn]
Conte, P [VerfasserIn]
Carey, L A [VerfasserIn]
Fernandez, A [VerfasserIn]
Harbeck, N [VerfasserIn]
Marín-Aguilera, M [VerfasserIn]
Vivancos, A [VerfasserIn]
Curigliano, G [VerfasserIn]
Villagrasa, P [VerfasserIn]
Parker, J S [VerfasserIn]
Perou, C M [VerfasserIn]
Prat, A [VerfasserIn]
Tolaney, S M [VerfasserIn]

Links:

Volltext

Themen:

Breast cancer
Chemotherapy
HER2
HER2DX
Journal Article
P188ANX8CK
Trastuzumab

Anmerkungen:

Date Completed 27.03.2024

Date Revised 27.03.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.esmoop.2024.102388

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM369322894