| Autor: |
Silvia Bonfiglio, Lesley-Ann Sutton, Viktor Ljungström, Antonella Capasso, Tatjana Pandzic, Simone Weström, Hassan Foroughi-Asl, Aron Skaftason, Anna Gellerbring, Anna Lyander, Francesca Gandini, Gianluca Gaidano, Livio Trentin, Lisa Bonello, Gianluigi Reda, Csaba Bödör, Niki Stavroyianni, Constantine S. Tam, Roberto Marasca, Francesco Forconi, Panayiotis Panayiotidis, Ingo Ringshausen, Ozren Jaksic, Anna Maria Frustaci, Sunil Iyengar, Marta Coscia, Stephen P. Mulligan, Loïc Ysebaert, Vladimir Strugov, Carolina Pavlovsky, Renata Walewska, Anders Österborg, Diego Cortese, Pamela Ranghetti, Panagiotis Baliakas, Kostas Stamatopoulos, Lydia Scarfò, Richard Rosenquist, Paolo Ghia |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
Blood Advances |
| Popis: |
Patients with chronic lymphocytic leukemia (CLL) progressing on ibrutinib constitute an unmet clinical need. Though BTK and PLCG2 mutations are associated with ibrutinib resistance, their frequency and relevance to progression are not fully understood. In this multicenter retrospective observational study, we analyzed 98 patients with CLL treated with ibrutinib (49 relapsing after an initial response and 49 still responding after ≥1 year of continuous treatment) using a next-generation sequencing (NGS) panel (1% sensitivity) comprising 13 CLL-relevant genes including BTK and PLCG2. BTK hotspot mutations were validated by droplet digital PCR (ddPCR) (0.1% sensitivity). By integrating NGS and ddPCR results, 32/49 relapsing cases (65%) carried at least 1 hotspot BTK mutation and/or PLCG2 mutation(s); in 6/32, BTK mutations were only detected by ddPCR [variant allele frequency (VAF) 0.1-1.2%]. BTK/PLCG2 mutations were also identified in 6/49 responding patients (12%; 5/6 VAF |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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