Long-term outcome comparing histological grades of follicular lymphoma patients treated with immunochemotherapy as first-line therapy: A retrospective analysis from two institutions

Santiago Mercadal*, Juan Manuel Sancho, Fina Climent, Gustavo Tapia, Helena Pomares, Itziar Carro, Marc Sorigué, Maria Pané, Eva Domingo-Doménech, Maite Encuentra, Carmen Aguilera, Ana Carla Oliveira, Marcio Andrade, Alberto Fernández de Sevilla, Josep Maria Ribera, Eva González-Barca, Anna Sureda

*Corresponding author for this work

Research output: Contribution to journalArticleResearchpeer-review

1 Citation (Scopus)

Abstract

Objectives: To clarify the impact of histological grades in follicular lymphoma. Methods: We retrospectively analysed 250 patients diagnosed with FL treated with chemoimmunotherapy: 188 patients were grades 1-2 and 62 grade 3A. Results: In our series, grade 3A FL patients were older, higher proportion of localised disease and lower bone marrow infiltration at diagnosis comparing grades 1-2 FL patients. Estimated six-year progression-free survival and time to progression showed no differences between both groups [grade 3A: 56% (95%CI: 39%-73%) and 51% (95%CI: 41%-61%) vs grades 1-2:55% (95%CI: 46%-63%) and 57% (95%CI: 49%-65%), P =.782 and P =.521, respectively]. Estimated six-year overall survival was lower, 76% (95%CI: 64%-88%) for the grade 3A group than grades 1-2 83% (95%CI: 77%-89%); P =.044. In addition to that, cumulative incidence curves of death not related to lymphoma at 10 years between groups were as follows: [0.26 (95%CI: 0.25-0.27) and 0.05 (95%CI: 0.04-0.06) for G3AFL and G1-2FL, respectively], P =.010. Grade 3A FL showed in PFS curve no relapses after 6 years. These results were absolutely reproduced in 199 patients receiving R-CHOP regimen as induction. Conclusions: Our results indicate similar long-term outcomes in terms of progression-free survival and time to progression in grades 1-2 and 3A. No relapses were observed in G3AFL group after 6 years.

Original languageAmerican English
Pages (from-to)198-206
Number of pages9
JournalEuropean Journal of Haematology
Volume104
Issue number3
DOIs
Publication statusPublished - 1 Mar 2020

Keywords

  • first line
  • Follicular lymphoma
  • immunotherapy
  • outcome

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