All content on this site is intended for healthcare professionals only. By acknowledging this message and accessing the information on this website you are confirming that you are a Healthcare Professional. If you are a patient or carer, please visit the Lymphoma Coalition.

The Lymphoma Hub uses cookies on this website. They help us give you the best online experience. By continuing to use our website without changing your cookie settings, you agree to our use of cookies in accordance with our updated Cookie Policy

Introducing

Now you can personalise
your Lymphoma Hub experience!

Bookmark content to read later

Select your specific areas of interest

View content recommended for you

Find out more
  TRANSLATE

The Lymphoma Hub website uses a third-party service provided by Google that dynamically translates web content. Translations are machine generated, so may not be an exact or complete translation, and the Lymphoma Hub cannot guarantee the accuracy of translated content. The Lymphoma Hub and its employees will not be liable for any direct, indirect, or consequential damages (even if foreseeable) resulting from use of the Google Translate feature. For further support with Google Translate, visit Google Translate Help.

Steering CommitteeAbout UsNewsletterContact
LOADING
You're logged in! Click here any time to manage your account or log out.
LOADING
You're logged in! Click here any time to manage your account or log out.

The Lymphoma & CLL Hub is an independent medical education platform, sponsored by Beigene, Johnson & Johnson and Roche, and supported through educational grants from Bristol Myers Squibb, Incyte, Ipsen Biopharmaceuticals, Lilly, and Pfizer. View funders.

2025-03-11T12:16:38.000Z

Loncastuximab tesirine plus rituximab in patients with R/R FL

Mar 11, 2025
Share:
Learning objective: After reading this article, learners will be able to cite a new clinical development in follicular lymphoma.

Bookmark this article


Patients with R/R FL may have rapid disease progression, characterized by increasingly treatment-refractory disease and shorter intervals to next therapy. There remains an unmet need for fixed-duration novel agents that can achieve high response rates and durable efficacy whilst maintaining acceptable safety profiles.1

A single arm phase II trial (NCT04998669) conducted at the Sylvester Comprehensive Cancer Center, US, evaluated the efficacy and safety of loncastuximab tesirine plus rituximab in patients with R/R FL (N = 39).1 Patients who had progressed after ≥2 lines of systemic therapy and presenting with progression or relapse within 24 months (POD24) after 1L treatment, ≥1 GELF criteria, or second relapse, had measurable disease according to Lugano 2014 classification, and ECOG PS 0–2 were included. The primary endpoint was CR at Week 12 assessed by the Lugano 2014 classification, with a secondary endpoint of Week 12 ORR. Results were published in Lancet Haematology by Alderuccio et al.1


Key learnings
The CR rate was 67% at Week 12, rising to 77% at Week 21. The ORR was 97%. Response rates were high across high-risk subgroups, including POD24, high FLIPI scores, and GELF criteria, with CR rates of 85%, 67%, and 75% in these subgroups, respectively.
The 12-month PFS and OS rates were 94.6% and 94.1%, respectively, with median PFS and OS rates not yet reached.
The most common Grade ≥3 TEAEs were lymphopenia (21%) and neutropenia (13%). No fatal TEAEs occurred.
Loncastuximab tesirine + rituximab demonstrated clinically meaningful activity in R/R FL, including high response rates in difficult-to-treat groups, with manageable safety. A fixed-duration and ambulatory regimen of loncastuximab tesirine + rituximab offers a promising combination in the 2L and later treatment of FL.

Abbreviations: 1L, first-line; 2L, second-line; CR, complete response; ECOG PS, Eastern Cooperative Oncology Group Performance Status; GELF, Groupe d’Etude des Lymphomes Folliculaires; FLIPI, Follicular Lymphoma International Prognostic Index; ORR, overall response rate; OS, overall survival; PFS, progression-free survival; POD24, progression or relapse within 24 months; R/R, relapsed/refractory; TEAE, treatment-emergent adverse event.

  1. Alderuccio PJ, Alencar AJ, Schatz JH, et al.  Loncastuximab tesirine with rituximab in patients with relapsed or refractory follicular lymphoma: a single-centre, single-arm, phase 2 trial. Lancet Haematol. 2025;12:e23-34. DOI: 10.1016/S2352-3026(24)00345-4

Understanding your specialty helps us to deliver the most relevant and engaging content.

Please spare a moment to share yours.

Please select or type your specialty

  Thank you

Your opinion matters

HCPs, what is your preferred format for educational content on the Lymphoma Hub?
84 votes - 60 days left ...

Newsletter

Subscribe to get the best content related to lymphoma & CLL delivered to your inbox