DeCehNT

BOOG 2026-01

General Information

BOOG number

BOOG 2026-01

Nickname

DeCehNT

Status

Date: 12/02/2026

Full title

Retrospective selection and prospective validation of histopathology and imaging findings related to complete response of the DCIS component in HER2+ invasive breast cancer patients treated with neoadjuvant systemic therapy

Indication

Subindication

HER2+ with a DCIS component

Description

Histopathology and imaging related to complete response of the DCIS component in HER2+ invasive breast cancer

Target sample size

300

Contact

Sponsor

MUMC+

Principal Investigator(s)

Dr. T. van Nijnatten, Nucleair radioloog MUMC+

Study coordinator

Aike Bruijsten

MD, PhD candidate Maastricht University

Department of Radiology and Surgery

GROW School for Oncology & Reproduction

Funding

KWF

Design

This research consists of a retrospective and a prospective cohort of HER2+ invasive breast cancer patients with a DCIS component. Both in the retrospective and the prospective cohort, imaging and histopathology will be collected and centrally reviewed. It aims to improve surgical decision-making by predicting and detecting the complete response of DCIS in these HER2+ IBC patients.

Objectives

To determine if it is possible to accurately predict and detect a complete response of the DCIS component accompanying HER2+ IBC using a prediction model based on the retrospective selected histopathologic and imaging findings

Eligibility Criteria

Inclusion criteria

All women age 18 years or older with HER2+ IBC with a DCIS component in the biopsy

 

Exclusion criteria

Treated with/scheduled for neoadjuvant treatment other than chemotherapy with dual anti-HER2 therapy.

Regulatory Information

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