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The Lymphoma & CLL Hub is an independent medical education platform, sponsored by Beigene and Roche, and supported through educational grants from Bristol Myers Squibb, Ipsen Biopharmaceuticals, Lilly, Pfizer, and Pharmacyclics LLC, an AbbVie Company and Janssen Biotech, Inc., administered by Janssen Scientific Affairs, LLC View funders.

2024-11-25T10:14:26.000Z

GLOW trial: 5-year follow-up of first-line fixed-duration ibrutinib plus venetoclax in older adults with CLL/SLL

Nov 25, 2024
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Learning objective: After reading this article, learners will be able to cite a new clinical development in chronic lymphocytic leukemia/small lymphocytic lymphoma.

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The phase III GLOW trial (NCT03462719) assessed the safety and efficacy of first-line fixed-duration Ibr + Ven vs Clb + Obi in older adults with CLL/SLL.1 The Lymphoma Hub previously reported the 4-year follow-up outcomes from the GLOW trial. The 5-year follow-up results of this trial were presented at the SOHO 2024 Annual Meeting by Munir.1


Key learnings
The estimated 54-month PFS rate was higher in the Ibr + Ven arm vs Clb + Obi arm (67% vs 20%; HR, 0.256).
OS was higher and sustained at 57 months in the Ibr + Ven arm vs Clb + Obi arm (HR, 0.453; p = 0.0038).
The need for second-line therapy was lower by 82% in the Ibr + Ven arm (HR, 0.185; 95% CI, 0.096–0.355; p < 0.0001).
Long-term data from the GLOW trial demonstrate the durable efficacy and tolerable safety profile of Ibr + Ven, supporting its use in older adults with CLL/SLL.

Abbreviations: CI, confidence interval; Clb, chlorambucil; CLL, chronic lymphocytic leukemia; Ibr, ibrutinib; Obi, obinutuzumab; OS, overall survival; PFS, progression-free survival; SLL, small lymphocytic lymphoma; SOHO, Society of Hematologic Oncology; Ven, venetoclax. 

  1. Munir T. First-line fixed-duration ibrutinib plus venetoclax versus chlorambucil plus obinutuzumab: Up to 5 years of follow-up from the GLOW study. Poster #CLL-487. Presented at: Society of Hematologic Oncology 2024 Annual Meeting; Sep 4–7, 2024; Houston, US. 

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