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.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 400 (estimated) |
| Sponsor | GBG Forschungs GmbH Academic / other |
| Locations | 23 sites (Innsbruck, Triol and 22 other locations) |
| Status | Recruiting |
| Started | October 12, 2022 |
| Main results expected | May 19, 2030 |
| Study ends | May 19, 2030 |
| Registry record updated | September 15, 2026 |
| Trial ID | NCT05739591 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
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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
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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
- Study coordinator: Thomas Ballhausen, Dr.
- Email: eternity@gbg.de
- Phone: 0049610274800
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.