PET/CT before autologous stem cell transplantation predicts outcome in refractory/relapsed follicular lymphoma.

Abstract:

PURPOSE:Salvage of young patients with follicular lymphoma (FL) after R-CHOP includes salvage immunochemotherapy followed by autologous stem cell transplantation (ASCT). Previous studies dealing with relapsed Hodgkin lymphoma have shown the prognostic value of PET/CT prior to ASCT. METHODS:We retrospectively analysed 59 patients with refractory/relapsed FL after first-line R-CHOP who were chemosensitive (as evaluated by CT) to the salvage treatment and who proceeded to ASCT. The role of PET/CT in this setting to define chemosensitivity is not definitely established. So we focused on the prognostic value of PET/CT performed after salvage treatment, before ASCT. RESULTS:The estimated 3-year progression-free survival (PFS) and overall survival were 63.1% (50.9-78.3%) and 90.5% (82.8 - 98.8%), respectively, and did not differ significantly according to their Follicular Lymphoma International Prognostic Index at relapse, conditioning regimen, or type of salvage. PFS was significantly lower in PET/CT-positive patients, according to the International Harmonization Project revised response criteria, with a 3-year PFS of 45.5% (26.6 - 77.8%) versus 72.6% (58.5 - 90.0%; p = 0.039). To better refine prognosis, we applied two types of throsholds: a Deauville five-point scale positive threshold of ≥3 (3-year PFS of 74.9%, range 61.0 - 92.1% %, versus 42.8%, range 24.7 - 74.4%; p = 0.02), and a ≥70% ∆SUVmax threshold between presalvage and pre-ASCT PET/CT (3-year PFS of 72.4%, range 57.5 - 91.3% versus 13.3%, 2.2 - 81.7%; p < 10(-3)). The PET/CT findings before ASCT were independently correlated with PFS in our series. CONCLUSION:PET/CT negativity before ASCT is a desirable and achievable goal in the management of chemosensitive FL relapsing after first-line R-CHOP.

authors

Alcantara M,Dupuis J,Mareschal S,Julian A,Cottereau AS,Becker S,Dubois S,Oberic L,Huynh A,Meignan M,Laurent G,Tilly H,Haioun C,Ysebaert L

doi

10.1007/s00259-014-2896-2

subject

Has Abstract

pub_date

2015-02-01 00:00:00

pages

215-21

issue

2

eissn

1619-7070

issn

1619-7089

journal_volume

42

pub_type

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