Neoadjuvant nivolumab or nivolumab plus ipilimumab in early-stage triple negative breast cancer: phase 2 adaptive BELLINI trial. WES

The adaptive BELLINI trial explored whether short combination ICI induces immune activation (primary endpoint: two-fold increase in CD8+ T cells or IFNG), providing rationale for neoadjuvant ICI without chemotherapy. In window of opportunity cohorts A (4 weeks anti-PD1) and B (4 weeks anti-PD1 + anti-CTLA4), we observed immune activation in 53% (8/15) and 60% (9/15) of patients, respectively. High tumor-infiltrating lymphocytes (TILs) correlated with response. Based on these data, we opened cohort C for patients with high TILs (≥50%) who received 6 weeks neoadjuvant anti-PD1 + anti-CTLA4 followed by surgery (primary endpoint: pathological complete response, pCR). 53% (8/15) of patients had major pathological response (< 10% viable tumor) at resection, with 33% (5/15) having pCR. All cohorts met Simon’s two-stage threshold for expansion to stage II. In conclusion, neoadjuvant immunotherapy without chemotherapy demonstrates potential efficacy and warrants further investigation in patients with early TNBC.

Type: Exome Sequencing
Archiver: European Genome-Phenome Archive (EGA)

2 Datasets 1 Publication

Click on a Dataset ID in the table below to learn more, and to find out who to contact about access to these data

Dataset ID	Description	Technology	Samples
EGAD50000000807	Single-cell RNA-Seq data and TCR sequencing data (both by 10X Genomics) of 51 TNBC primary tumors obtained from 29 unique patients from BELLINI clinical trial. The data includes pre- and post-treatment samples. Patients in cohort A (16 patients, 28 samples) received nivolumab for 4 weeks, patients in cohort B (13 patients, 23 samples) received nivolumab + ipilimumab for 4 weeks. The included sequencing data was generated from frozen material for cohort A and from fresh material for cohort B.	Illumina HiSeq 4000 Illumina NovaSeq 6000	116
EGAD50000000809	WES data of 30 breast cancer primary tumors obtained from 30 unique patients from BELLINI clinical trial (cohorts A & B) and 30 matched blood samples. The data includes pretreatment samples. The included raw WES sequencing data in fastq format was generated using Illumina NovaSeq 6000.	Illumina NovaSeq 6000	60

Publications	Citations
Neoadjuvant nivolumab or nivolumab plus ipilimumab in early-stage triple-negative breast cancer: a phase 2 adaptive trial. Nederlof I, Isaeva OI, de Graaf M, Gielen RCAM, Bakker NAM, Rolfes AL, Garner H, Boeckx B, Traets JJH, Mandjes IAM, de Maaker M, van Brussel T, Chelushkin M, Champanhet E, Lopez-Yurda M, van de Vijver K, van den Berg JG, Hofland I, Klioueva N, Mann RM, Loo CE, van Duijnhoven FH, Skinner V, Luykx S, Kerver E, Kalashnikova E, van Dongen MGJ, Sonke GS, Linn SC, Blank CU, de Visser KE, Salgado R, Wessels LFA, Drukker CA, Schumacher TN, Horlings HM, Lambrechts D, Kok M. Nat Med 30: 2024 3223-3235	2

Publications

Citations

Neoadjuvant nivolumab or nivolumab plus ipilimumab in early-stage triple-negative breast cancer: a phase 2 adaptive trial.
Nederlof I, Isaeva OI, de Graaf M, Gielen RCAM, Bakker NAM, Rolfes AL, Garner H, Boeckx B, Traets JJH, Mandjes IAM, de Maaker M, van Brussel T, Chelushkin M, Champanhet E, Lopez-Yurda M, van de Vijver K, van den Berg JG, Hofland I, Klioueva N, Mann RM, Loo CE, van Duijnhoven FH, Skinner V, Luykx S, Kerver E, Kalashnikova E, van Dongen MGJ, Sonke GS, Linn SC, Blank CU, de Visser KE, Salgado R, Wessels LFA, Drukker CA, Schumacher TN, Horlings HM, Lambrechts D, Kok M. Nat Med 30: 2024 3223-3235