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Disitamab Vedotin Combined With Tislelizumab in Advanced HER2 Positive Colorectal Cancer

ABSTRACT: Among patients with colonrectal cancer, 5% were HER-2 positive, but the immunohistochemical results were mostly HER-2 2 +, which did not meet the indications of HER-2 targeting drugs. Disitamab Vedotin , which was listed in China last year, achieved similar results in HER-2 2+ and 3+, according to a clinical trial for breast cancer, suggesting that patients with colonrectal cancer may benefit from it. Tislelizumab is a PD-1 monoclonal antibody, which has been approved for a variety of tumors. It was reported that anti-HER-2 treatment can improve the tumor immune microenvironment and improve the efficacy of immunotherapy. At the same time, our previous studies showed that anti-PD-1 combined with Disitamab Vedotin can significantly inhibit the growth of colon tumor in mice. Therefore, Disitamab Vedotin and Tislelizumab were used in this study. This prospective clinical trial may bring new hope for the treatment of HER-2 positive CRC patients.

DISEASE(S): Colorectal Cancer,Colorectal Neoplasms

PROVIDER: 2744623 | ecrin-mdr-crc |

REPOSITORIES: ECRIN MDR

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Enfortumab Vedotin Induces Immunogenic Cell Death and Shows Enhanced Preclinical Antitumor Activity When Combined With a PD-1 Inhibitor

Project description:Enfortumab vedotin is a Nectin-4-directed antibody–drug conjugate designed to deliver the microtubule-disrupting agent monomethyl auristatin E (MMAE) in tumor cells. Using preclinical models of urothelial cancer (UC), we expand the understanding of the multifaceted mechanism of action for enfortumab vedotin that includes direct cytotoxicity on Nectin-4–positive tumor cells, indirect bystander effect on neighboring Nectin-4–negative tumor cells, and MMAE-mediated induction of immunogenic cell death (ICD) and associated increase in activated immune cells in the tumor microenvironment. Importantly, vaccination with enfortumab vedotin-treated tumor cells drives antitumor immunity and provides protection against rechallenge in mice. MMAE-mediated ICD induction modulates the tumor microenvironment in a complementary manner to immune checkpoint inhibition. Accordingly, enfortumab vedotin plus PD-1 inhibitor shows enhanced antitumor activity in vivo. These preclinical results demonstrate the underlying mechanisms consistent with the significantly improved clinical outcomes observed for enfortumab vedotin plus pembrolizumab relative to chemotherapy in the first-line treatment of la/mUC.

2024-04-19 | GSE264352 | GEO

Efficacy and Safety Study of Tisotumab Vedotin for Patients With Solid Tumors

Project description:This trial will study tisotumab vedotin to find out whether it is an effective treatment for certain solid tumors and what side effects (unwanted effects) may occur. There are seven parts to this study. * In Part A, the treatment will be given to participants every 3 weeks (3-week cycles). * In Part B, participants will receive tisotumab vedotin on Days 1, 8, and 15 every 4-week cycle. * In Part C, participants will receive tisotumab vedotin on Days 1 and 15 of every 4-week cycle. * In Part D, participants will be given treatment on Day 1 of every 3-week cycle. Participants in Part D will get tisotumab vedotin with either: * Pembrolizumab or, * Pembrolizumab and carboplatin, or * Pembrolizumab and cisplatin * In Part E, participants will receive tisotumab vedotin on Days 1 and 15 of every 4-week cycle. * In Part F, participants will receive tisotumab vedotin on Days 1, 15, and 29 of every 6-week cycle. Participants in Part F will get tisotumab vedotin with pembrolizumab. * In Part G, participants will receive tisotumab vedotin on Days 1, 15, and 29 of every 6-week cycle. Participants in Part G will get tisotumab vedotin with pembrolizumab and carboplatin.

| 2269862 | ecrin-mdr-crc

Molecular Determinants of Sensitivity to Polatuzumab Vedotin in Diffuse Large B Cell Lymphoma

Project description:Polatuzumab Vedotin (Pola-V) is an antibody-drug conjugate directed to the CD79B subunit of the B cell receptor (BCR). When combined with conventional immunochemotherapy, Pola-V improves outcomes in DLBCL. To identify molecular determinants of sensitivity to Pola-V, we used CRISPR-Cas9 screening for genes that modulated the toxicity of Pola-V for lymphomas or the surface expression of its target, CD79B. Our results reveal a striking impact of CD79B glycosylation on Pola-V epitope availability on the lymphoma cell surface and on Pola-V toxicity. Genetic, pharmacological, and enzymatic approaches that remove terminal sialic acid residues from N-linked glycans enhanced lymphoma killing by Pola-V. Pola-V toxicity was also modulated by KLHL6, a ubiquitin ligase that targets CD79B for degradation in normal and malignant germinal center B cells, explaining its recurrent inactivation in germinal center-derived lymphomas. Our findings suggest precision medicine strategies to optimize Pola-V as a lymphoma therapeutic.

2024-07-12 | PXD043670 | Pride

Disitamab Vedotin Combined With Fruquintinib for mCRC With HER2 Expression

Project description:Single arm, prospective, exploratory clinical study of Disitamab Vedotin combined with Fruquintinib for advanced colorectal cancer with HER2 expression or mutation that has received at least two standard treatment failures

| 3210 | ecrin-mdr-crc

Expression data in human renal cell carcinoma samples from patients who did or did not respond to anti-PD-1 (Nivolumab) immunotherapy

Project description:Pre-treatment tumor expression of PD-L1 has been shown to correlate with favorable clinical outcomes following PD-1 blocking therapies. However, the majority of patients with PD-L1+ tumors do not respond to treatment. With the goal of obtaining insights into the mechanisms underlying the response to anti-PD-1 targeted therapies in patients with renal cell carcinoma (RCC) with positive tumor expression of PD-L1, microarray expression data was obtained for pre-treatment tumors from patients with RCC who did or did not have a positive response to anti-PD-1 (nivolumab) therapy. Insight into these mechanisms may lead to improved rationally designed therapies, and biomarkers for selecting patients who are more likely to benefit from these treatments. Gene expression profiling was performed on total RNA extracted from 11 formalin-fixed paraffin-embedded (FFPE) RCC specimens, 4 of which were from patients who had a positive response (objective tumor regression) to the anti-PD-1 (nivolumab) immunotherapy, and 7 of which were from patients who did not have a response. Details of the design, and the gene signatures found are given in the paper associated with this GEO Series: Maria Libera Ascierto, Tracee L. McMiller, Alan E. Berger, Ludmila Danilova, Robert A. Anders, George J. Netto, Haiying Xu, Theresa S. Pritchard, Jinshui Fan, Chris Cheadle, Leslie Cope, Charles G. Drake, Drew M. Pardoll, Janis M. Taube, and Suzanne L. Topalian, The Intratumoral Balance between Metabolic and Immunologic Gene Expression Is Associated with Antiâ??PD-1 Response in Patients with Renal Cell Carcinoma, published online in Cancer Immunology Research on 4 August 2016, doi: 10.1158/2326-6066.CIR-16-0072 http://cancerimmunolres.aacrjournals.org/content/early/2016/07/28/2326-6066.CIR-16-0072.full.pdf+html

2016-08-04 | E-GEOD-67501 | biostudies-arrayexpress

Pembrolizumab and Disitamab Vedotin in HER2-expressing Metastatic Colorectal Cancer

Project description:This is an open-label, multi-center, phase Ⅱ study. This study will evaluate the efficacy and safety of pembrolizumab in combination with disitamab vedotin in subject with HER2-expressing metastatic Colorectal Cancer (mCRC).

| 2719190 | ecrin-mdr-crc

Batf3-dendritic cells and 4-1BB/4-1BB ligand axis are required at the effector phase within the tumor microenvironment for PD-1/PD-L1 blockade efficacy

Project description:The cellular source of positive signals that reinvigorate T cells within the tumor microenvironment (TME) for the therapeutic efficacy of PD-1/PD-L1 blockade has not been clearly defined. We now show that Batf3-lineage dendritic cells (DCs) are essential in this process. Flow cytometric analysis, gene-targeted mice, and blocking antibody studies revealed that 4-1BBL was a major positive costimulatory signal provided by these DCs within the TME, that translated to CD8+ T cell functional reinvigoration and tumor regression. Immunofluorescence and spatial transcriptomics on human tumor samples revealed clustering of Batf3+ DCs and CD8+ T cells, which correlated with anti-PD-1 efficacy. In addition, proximity to Batf3+ DCs within the TME was associated with CD8+ T cell transcriptional states linked to anti-PD-1 response. Our results demonstrate that Batf3+ DCs within the TME are critical for PD-1/PD-L1 blockade efficacy, and indicate a major role for the 4-1BB/4-1BBL axis during this process.

2024-05-13 | GSE238145 | GEO

Next Generation Sequencing Facilitates Quantitative Analysis of CD45 positive immune cell Transcriptomes in four treated groups after hydrodynamic transfections

Project description:Purpose: The goals of this study are to compare the transcriptome profilings (RNA-seq) of CD45 positive immune cells in the control, polyIC, anti-PD-L1 and combination groups. Methods: All the CD45 positive immune cells of the mouse liver in control, polyIC, anti-PD-L1 and combination groups at day 24 were isolated, after hydrodynamic trasfection of c-Myc and N-ras at day 0. Then the mRNA profiles were generated by sequencing, in triplicate, using Illumina HiSeq 4000. RNA-seq generated raw data were aligned to the GRCm38 mouse reference genome using Star program (2.3.0). Gene differential expression analysis was performed using Cuffdiff to obtain the expression levels of genes in each sample.Gene Set Enrichment Analysis (GSEA) analysis was performed for pathway analysis online (software.broadinstitute.org/gsea). Results: By comparing to the control group, the number of differentially expressed genes and the overlaps in other groups were listed by Venn diagram. There were a total of 1654 differentially expressed genes specifically in the combination group. Gene set enrichment analysis (GSEA) of these 1654 genes demonstrated that the immune cells in the combination groups were particularly associated with adaptive and innate immune system and the progresses of antigen processing and presentations. The key genes involved in interferon-g (IFg) signaling pathway and some key genes, as indicators of anti-tumor cytotoxic function, were listed by heatmap. Conclusions: The RNA-seq data further confirmed that combination of polyIC and PD-L1 Ab dramatically enhanced the anti-tumor immunity in the liver, especially the adaptive immune response.

2018-09-20 | GSE120163 | GEO

Expression data in human renal cell carcinoma samples from patients who did or did not respond to anti-PD-1 (Nivolumab) immunotherapy

2016-08-04 | GSE67501 | GEO

Immune checkpoint blockade reprograms systemic immune landscape and tumor microenvironment in obesity-associated breast cancer [tumor]

Project description:Immune checkpoint blockade (ICB) has improved outcomes in some cancers. A major limitation of ICB is that a majority of patients fail to respond, which is partly attributable to immunosuppression. Obesity appears to improve immune checkpoint therapies in some cancers but impacts on breast cancer (BC) remain unknown. In obese mice fed an obesogenic or lean controls on a low fat diet, mice are injected with BC cells andtreated with anti-PD-1 or control. Obesity leads to immunosuppression systemically in tumor-free mice that is exacerbated in tumor-bearing mice. Obesity augments tumor incidence and progression. Anti-PD-1 induces regression in lean mice and potently abrogates progression in obese mice. Anti PD-1 significantly reduces immunosuppressive cells and elevates anti-tumor immune cells. Lamb2, downregulated by anti-PD1, significantly predict patient survival. Last, we identify a microbial signature associated with anti-PD-1 efficacy. In sum, anti-PD-1 is highly efficacious in obese mice by reinvigorating durable antitumor immunity.

2021-05-08 | GSE174053 | GEO

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