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            <idno type="halRefHtml">&lt;i&gt;Cells&lt;/i&gt;, 2024, Onco-Hematology and Immunotherapy, 13, &lt;a target="_blank" href="https://dx.doi.org/10.3390/cells13171458"&gt;&amp;#x27E8;10.3390/cells13171458&amp;#x27E9;&lt;/a&gt;</idno>
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            <idno type="stamp" n="UNIV-LYON">Université de Lyon</idno>
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                <term xml:lang="en">immunotherapy</term>
                <term xml:lang="en">spectral flow cytometry</term>
                <term xml:lang="en">onco-immunology</term>
                <term xml:lang="en">chronic lymphocytic leukemia</term>
                <term xml:lang="en">chronic lymphocytic leukemia onco-immunology immunotherapy spectral flow cytometry</term>
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              <p>&lt;div&gt;&lt;p&gt;Chronic lymphocytic leukemia (CLL) is a B-cell-derived hematologic malignancy whose progression depends on active B-cell receptor (BCR) signaling. Despite the spectacular efficacy of Ibrutinib, an irreversible inhibitor of Bruton tyrosine kinase (BTK), resistance can develop in CLL patients, and alternative therapeutic strategies are therefore required. Cancer immunotherapy has revolutionized cancer care and may be an attractive approach in this context. We speculated that characterizing the immune responses of CLL patients may highlight putative immunotherapeutic targets. Here, we used high-dimensional spectral flow cytometry to compare the distribution and phenotype of non-B-cell immune populations in the circulating blood of CLL patients treated with Ibrutinib displaying a complete response or secondary progression. Although no drastic changes were observed in the composition of their immune subsets, the Ibrutinib-resistant group showed increased cycling of CD8+ T cells, leading to their overabundance at the expense of dendritic cells. In addition, the expression of 11 different surface checkpoints was similar regardless of response status. Together, this suggests that CLL relapse upon Ibrutinib treatment may not lead to major alterations in the peripheral immune response.&lt;/p&gt;&lt;/div&gt;</p>
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