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Impact of neoadjuvant immunotherapy in early stage breast cancer before standard therapy (BIS-Program)

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2024-512826-26-00
Acronym
2020-004696-41
Enrollment
185
Registered
2024-09-25
Start date
2022-03-07
Completion date
2024-12-17
Last updated
2024-09-25

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

Conditions

Newly diagnosed, non-metastatic early-stage triple-negative or HER2+ breast cancer

Brief summary

Presence/ of two-fold increase in GzmB+ CD8+ T cell levels from baseline to post-treatment window in biopsies.

Detailed description

Changes in CD8+, PD-L1, MHC-I and % of Ki67 expression from baseline (pre-study) to end of study-treatment biopsies, Changes from baseline tumor tissue to end of treatment in immune infiltrates, immune-related gene expression, Incidence, nature and severity of Adverse Events graded according to NCI-CTCAE v5.0 collected during treatment and up to 4 weeks post-surgery, Clinical response after experimental therapy, defined as a > 30% decrease in tumor diameter from baseline breast ultrasound based on investigator assessment, pCR defined as the absence of any residual invasive cancer based on histological evaluation of the resected specimen during definitive breast cancer surgery, Rate of anti-Pembrolizumab antibodies at day 1 of cycle 2 Pembrolizumab (only patients in TNBC cohort, who will have Pembrolizumab as neoadjuvant systemic treatment).

Interventions

DRUGPerjeta 420 mg concentrate for solution for infusion
DRUGHerceptin 150 mg powder for concentrate for solution for infusion
DRUGAvastin 25 mg/ml concentrate for solution for infusion.

Sponsors

Institut Gustave Roussy
Lead SponsorOTHER

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Design outcomes

Primary

MeasureTime frame
Presence/ of two-fold increase in GzmB+ CD8+ T cell levels from baseline to post-treatment window in biopsies.

Secondary

MeasureTime frame
Changes in CD8+, PD-L1, MHC-I and % of Ki67 expression from baseline (pre-study) to end of study-treatment biopsies, Changes from baseline tumor tissue to end of treatment in immune infiltrates, immune-related gene expression, Incidence, nature and severity of Adverse Events graded according to NCI-CTCAE v5.0 collected during treatment and up to 4 weeks post-surgery, Clinical response after experimental therapy, defined as a > 30% decrease in tumor diameter from baseline breast ultrasound based on investigator assessment, pCR defined as the absence of any residual invasive cancer based on histological evaluation of the resected specimen during definitive breast cancer surgery, Rate of anti-Pembrolizumab antibodies at day 1 of cycle 2 Pembrolizumab (only patients in TNBC cohort, who will have Pembrolizumab as neoadjuvant systemic treatment).

Countries

France

Outcome results

None listed

Source: EU CTIS · Data processed: Feb 4, 2026