Clinical trial Recruiting at 23 sites Observational Ages 18 and up

Long-term follow-up for breast cancer patients from GBG trials

Official title: Registry for Long-term Follow-up of Safety and Efficacy Parameters of GBG Study Participants

Run by GBG Forschungs GmbH · NCT05739591 · Data updated 2026-11-12

This study is looking to see how well different treatments work for early breast cancer patients over the long term and how they affect things like survival, side effects, and quality of life.

More Breast Cancer trials

Quick facts

Study typeObservational
Ages18 Years and up
SexAll
Enrollment400 (estimated)
SponsorGBG Forschungs GmbH
Academic / other
Locations23 sites (Innsbruck, Triol and 22 other locations)
StatusRecruiting
StartedOctober 12, 2022
Main results expectedMay 19, 2030
Study endsMay 19, 2030
Registry record updatedSeptember 15, 2026
Trial IDNCT05739591 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are individuals who have previously participated in a GBG clinical trial for early breast cancer.

Probably not a fit

Patients who have participated in non-GBG clinical trials or those with advanced or metastatic breast cancer will not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

The ETERNITY study is an international, multicenter, observational initiative designed to collect long-term safety and efficacy data from patients who participated in GBG trials for early breast cancer. This study will gather information on survival rates, late adverse events, and factors affecting quality of life, such as pregnancy and fertility. Patients will be registered after providing informed consent, and their follow-up data will be documented annually. The study aims to correlate long-term outcomes with the specific therapies received during the initial trials.

Why it matters

Potential benefit: If successful, this study could provide valuable insights into the long-term effects of treatments for early breast cancer, improving patient care and management.

How similar studies have gone: Other studies focusing on long-term follow-up in cancer patients have shown success, indicating that this approach is both valuable and tested.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion criteria:

* Participation and treatment in a GBG clinical trial for early breast cancer.
* Prospective registration: Written informed consent according to local regulatory requirements prior to data and biomaterial collection.

Exclusion criteria:

* Participation and treatment in a non-GBG clinical trial for early breast cancer.
* Patients with advanced or metastatic breast cancer who have participated and received treatment in a GBG clinical trial.

Where it's running

  • Universitätsklinikum Innsbruck, Klinische Abteilung f. Gynäkologie und Geburt
    Innsbruck, Triol, Austria
    Recruiting
  • Klinikum Wels-Grieskirchen GmbH
    Wels, Upper Austria, Austria
    Recruiting
  • MedUni Graz - Med. Universitätsklinik, Klinische Abteilung für Onkologie
    Graz, Austria
    Recruiting
  • MedUni Graz - Universitätsklinik für Frauenheilkunde und Geburtshilfe
    Graz, Austria
    Recruiting
  • Ordensklinikum Linz GmbH - BHS
    Linz, Austria
    Recruiting
  • LKH Salzburg - PMU
    Salzburg, Austria
    Recruiting
Show 17 more locations
  • Medical University of Vienna, Brustambulanz AKH Wien
    Vienna, Austria
    Recruiting
  • Klinik Hietzing Wien
    Vienna, Austria
    Recruiting
  • Hospital Reina Sofia, Servicio Oncología Planta sotano
    Córdoba, Andalusia, Spain
    Recruiting
  • Hospital Universitario Basurto, Servicio de Oncología médica
    Bilbao, Basque Country, Spain
    Recruiting
  • Hospital Universitario de Canarias
    Santa Cruz de Tenerife, Canary Islands, Spain
    Recruiting
  • Hospital Germans Trias i Pujol
    Badalona, Catalonia, Spain
    Recruiting
  • Hospital Universitari Vall d´Hebron, Servicio de Oncologia Medica
    Barcelona, Catalonia, Spain
    Recruiting
  • Hospital Clinic i Provincial de Barcelona
    Barcelona, Catalonia, Spain
    Recruiting
  • H. Santa Creu I Sant Pau
    Barcelona, Catalonia, Spain
    Recruiting
  • Fundació IRB Lleida, Oncología, Unidad de ensayos clínicos
    Lleida, Catalonia, Spain
    Recruiting
  • Hospital Parc Tauli
    Sabadell, Catalonia, Spain
    Recruiting
  • Hospital San Pedro de Alcantara
    Cáceres, Extremadura, Spain
    Recruiting
  • Hospital Universitario Ramon y Cajal, Servicio de Oncología Médica/ Oficina de Ensayos Clínicos
    Madrid, Madrid, Spain
    Recruiting
  • Hospital Universitario Clínico San Carlos, Servicio de Oncología Médica
    Madrid, Madrid, Spain
    Recruiting
  • Fundación Instituto Valenciano de Oncología (IVO)
    Valencia, Valencia, Spain
    Recruiting
  • Hospital Universitario Infanta Cristina, Centro de Investigacíon Clinica e Área de Sal
    Badajoz, Spain
    Recruiting
  • Hospital Universitario Virgen der Rocio
    Seville, Spain
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.