对派姆单抗有长期反应的转移性肉瘤样尿路上皮癌的肿瘤免疫微环境成像细胞术显示

IF 1.8 Q3 MEDICINE, RESEARCH & EXPERIMENTAL Cold Spring Harbor Molecular Case Studies Pub Date : 2022-04-01 DOI:10.1101/mcs.a006151
Hussein Alnajar, H. Ravichandran, André Figueiredo Rendeiro, Kentaro Ohara, Wael Al Zoughbi, J. Manohar, Noah Greco, M. Sigouros, Jesse M. Fox, Emily Muth, Samuel Angiuoli, B. Faltas, M. Shusterman, C. Sternberg, O. Elemento, J. Mosquera
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引用次数: 5

摘要

肉瘤样尿路上皮癌(SUC)是一种罕见的尿路上皮癌(UC)亚型,与更常见的UC变体相比,通常出现在晚期。局部晚期和转移性UC在一线铂基化疗进展后的长期生存率较差。针对程序性细胞死亡1蛋白(PD-1)或其配体(PD-L1)的抗体现在已被批准用于这些情况。对治疗分层的可靠生物标志物的需求仍在研究中。在这里,我们提出了一个新的病例报告,首次在SUC中进行成像细胞计数(IMC)分析,以研究转移性SUC患者的免疫细胞库和PD-L1表达,该患者在一线化疗进展后对抗pd1免疫检查点抑制剂派姆单抗的反应延长。本病例报告提供了一个重要的平台,将这些发现转化为更大的UC和UC变体队列。
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Tumor-immune microenvironment revealed by Imaging Mass Cytometry in a metastatic sarcomatoid urothelial carcinoma with a prolonged response to pembrolizumab
Sarcomatoid urothelial carcinoma (SUC) is a rare subtype of urothelial carcinoma (UC) that typically presents at an advanced stage compared to more common variants of UC. Locally advanced and metastatic UC have a poor long-term survival following progression on first-line platinum-based chemotherapy. Antibodies directed against the programmed cell death 1 protein (PD-1) or its ligand (PD-L1) are now approved to be used in these scenarios. The need for reliable biomarkers for treatment stratification is still under research. Here, we present a novel case report of the first Imaging Mass Cytometry (IMC) analysis done in SUC to investigate the immune cell repertoire and PD-L1 expression in a patient who presented with metastatic SUC and experienced a prolonged response to the anti-PD1 immune checkpoint inhibitor pembrolizumab after progression on first-line chemotherapy. This case report provides an important platform for translating these findings to a larger cohort of UC and UC variants.
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来源期刊
Cold Spring Harbor Molecular Case Studies
Cold Spring Harbor Molecular Case Studies MEDICINE, RESEARCH & EXPERIMENTAL-
CiteScore
3.20
自引率
0.00%
发文量
54
期刊介绍: Cold Spring Harbor Molecular Case Studies is an open-access, peer-reviewed, international journal in the field of precision medicine. Articles in the journal present genomic and molecular analyses of individuals or cohorts alongside their clinical presentations and phenotypic information. The journal''s purpose is to rapidly share insights into disease development and treatment gained by application of genomics, proteomics, metabolomics, biomarker analysis, and other approaches. The journal covers the fields of cancer, complex diseases, monogenic disorders, neurological conditions, orphan diseases, infectious disease, gene therapy, and pharmacogenomics. It has a rapid peer-review process that is based on technical evaluation of the analyses performed, not the novelty of findings, and offers a swift, clear path to publication. The journal publishes: Research Reports presenting detailed case studies of individuals and small cohorts, Research Articles describing more extensive work using larger cohorts and/or functional analyses, Rapid Communications presenting the discovery of a novel variant and/or novel phenotype associated with a known disease gene, Rapid Cancer Communications presenting the discovery of a novel variant or combination of variants in a cancer type, Variant Discrepancy Resolution describing efforts to resolve differences or update variant interpretations in ClinVar through case-level data sharing, Follow-up Reports linked to previous observations, Plus Review Articles, Editorials, and Position Statements on best practices for research in precision medicine.
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