Skip to content

Using advanced technologies to better understand breast cancer and its environment

Molecular characterization of intratumor heterogeneity of different breast cancer subtypes and their microenvironment using multiomic platforms and patient-derived models: a prospective pilot study

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
ISRCTN
Registry ID
ISRCTN25342178
Enrollment
100
Registered
2026-05-29
Start date
2020-04-20
Completion date
Unknown
Last updated
2026-06-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Early-stage ER-positive, HER2-negative luminal high-risk breast cancer, HER2-positive breast cancer, triple-negative breast cancer treated with standard of care neoadjuvant therapies. Cancer

Interventions

This is a prospective, single-centre, observational translational pilot study in patients with early-stage breast cancer receiving standard-of-care neoadjuvant treatment. Eligible patients with tripl
additional longitudinal blood samples are collected during follow-up. Collected samples include FFPE tissue, frozen tumour tissue, fresh tumour tissue, plasma, serum, peripheral blood mononuclear cel

Sponsors

Institut Jules Bordet
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 90 Years

Inclusion criteria

Inclusion criteria: 1. Adult patients aged 18 years or older 2. Histologically confirmed early-stage breast cancer planned for neoadjuvant systemic treatment at Institut Jules Bordet 3. Breast cancer subtype eligible for this observational translational study: 3.1. Triple-negative breast cancer, or 3.2. HER2-positive breast cancer, 3.3. ER-positive/HER2-negative high-risk luminal breast cancer 4. No evidence of metastatic disease at study entry 5. Willing and able to provide written informed consent for collection of tissue, blood, and clinical data 6. Availability of baseline and planned surgical material, with optional on-treatment biopsy where feasible 7. For the TNBC expansion cohort: tumor size at least T1c with node-positive disease, or tumor size at least T2, or otherwise eligible for neoadjuvant pembrolizumab plus chemotherapy according to KEYNOTE-522 and institutional multidisciplinary tumor board decision

Exclusion criteria

Exclusion criteria: 1. Patients not meeting the inclusion criteria 2. Metastatic breast cancer at study entry 3. Refusal or inability to provide informed consent 4. Inability to provide the required research samples according to protocol procedures

Countries

Belgium

Contacts

Public ContactChristos;Marcela Sotiriou;Carausu

;

christos.sotiriou@hubruxelles.be;marcela.carausu@hubruxelles.be+32 2 541 34 57;+32 2 541 34 57

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Jun 11, 2026