NCT06549920 (DBCG IMN) is a NA clinical trial of Internal mammary node irradiation in Breast Cancer, sponsored by Danish Breast Cancer Cooperative Group.

Who is sponsoring NCT06549920?

NCT06549920 is sponsored by Danish Breast Cancer Cooperative Group.

What drugs are being tested in NCT06549920?

Interventions in NCT06549920: Internal mammary node irradiation.

What condition does NCT06549920 study?

NCT06549920 studies Breast Cancer.

Is NCT06549920 still recruiting?

NCT06549920 is currently active, enrolled. Last updated 12 August 2024.

Last reviewed 2024-08-12 · How we verify

NCT06549920: DBCG IMN

Name: Drug Landscape Pharmaceutical Database
Creator: Drug Landscape
Published: 2026-01-01
License: https://creativecommons.org/licenses/by/4.0/

Danish Breast Cancer Group Internal Mammary Node Study

Active, enrolled NA Last updated 12 August 2024

What this trial tests

NA trial testing Internal mammary node irradiation in Breast Cancer in 7,630 participants. Participants enrolled and being followed up; not accepting new ones.

Timeline

1 January 2003

Primary endpoint
17 November 2023

1 January 2034

Quick facts

Lead sponsor	Danish Breast Cancer Cooperative Group
Phase	NA
Status	Active, enrolled
Study type	INTERVENTIONAL
Allocation	non randomized
Design	parallel
Masking	none
Primary purpose	treatment
Enrollment	7,630
Start date	1 January 2003
Primary completion	17 November 2023
Estimated completion	1 January 2034

Drugs / interventions tested

Internal mammary node irradiation

Conditions studied

Breast Cancer — all drugs for Breast Cancer →

Sponsor

Danish Breast Cancer Cooperative Group

Who can join

Eligibility, any sex, with Breast Cancer. Patients with the condition only — healthy volunteers not accepted.

Sponsor's own description

The DBCG IMN study is a nationwide prospective population-based cohort study allocating node-positive breast cancer patients with right-sided tumors to internal mammary node irradiation (IMNI) and patients with left-sided tumors to no IMNI.

Publications & conference data

2 peer-reviewed publications reference this trial (live from Europe PMC):

Internal mammary node irradiation in 4541 node-positive breast cancer patients treated with newer systemic therapies and 3D-based radiotherapy (DBCG IMN2): a prospective, nationwide, population-based cohort study.
Nielsen AWM, Thorsen LBJ, Özcan D, Matthiessen LW, et al · · 2025 · cited 11× · PMID 39810969 · DOI 10.1016/j.lanepe.2024.101160
Twenty-year results of the randomized European Organization for Research and Treatment of Cancer trial 22922/10925 evaluating internal mammary chain and medial supraclavicular lymph node irradiation in stage I-III breast cancer.
Kaidar-Person O, Weltens CG, Fortpied C, Scheijmans LJEE, et al · · 2026 · PMID 42141924 · DOI 10.3322/caac.70082

Verify or expand the search:

Other recruiting trials for Breast Cancer

Currently open trials in the same condition.

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NCT07510698 — Same-Day Awake Mastectomy With Immediate Breast Reconstruction for Patients With Breast Cancer · NA · recruiting
NCT06768931 — Biolosion Combined Standard Neoadjuvant Therapy to Treat Triple-negative Breast Cancer · Phase 2 · recruiting

Other Danish Breast Cancer Cooperative Group trials

Trials by the same sponsor.

NCT06585969 — A Randomised Trial Comparing Trastuzumab Deruxtecan to CDK4/6 Inhibitors in Non-luminal A, ER-positive/HER2-low Metastat · Phase 3 · withdrawn
NCT04291378 — The DBCG Proton Trial: Photon Versus Proton Radiation Therapy for Early Breast Cancer · NA · recruiting
NCT03646955 — Partial Breast Versus no Irradiation for Women With Early Breast Cancer · NA · recruiting

Verify against primary sources

ClinicalTrials.gov — authoritative US registry record
WHO ICTRP — international registry index
EU Clinical Trials Register
Sponsor press releases (Google)

Data sources for this page

Trial protocol + status: ClinicalTrials.gov NCT06549920 (US National Library of Medicine, public domain)
Publications: Europe PMC API search by NCT ID, retrieved 10 June 2026
Drug + disease cross-links: matched in real time against Drug Landscape's normalised drug + company + condition tables
Sponsor: as reported to ClinicalTrials.gov by Danish Breast Cancer Cooperative Group
Last refreshed: 12 August 2024

Drug Landscape aggregates and links these public records for informational use only. Always verify against the primary source before clinical or regulatory decisions. Canonical URL: https://druglandscape.com/trial/NCT06549920.

Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing