End-of-treatment and serial PET imaging in primary mediastinal B-cell lymphoma following dose-adjusted-EPOCH-R: A paradigm shift in clinical decision making.

End-of-treatment and serial PET imaging in primary mediastinal B-cell lymphoma following dose-adjusted-EPOCH-R: A paradigm shift in clinical decision making. Haematologica. 2018 May 10;: Authors: Melani C, Advani R, Roschewski M, Walters KM, Chen CC, Baratto L, Ahlman MA, Miljkovic MD, Steinberg SM, Lam J, Shovlin M, Dunleavy K, Pittaluga S, Jaffe ES, Wilson WH Abstract Dose-adjusted-EPOCH-R obviates the need for radiotherapy in most patients with primary mediastinal B-cell lymphoma. End-of-treatment PET, however, does not accurately identify patients at risk of treatment failure, thereby confounding clinical decision making. To define the role of PET in primary mediastinal B-cell lymphoma following dose-adjusted-EPOCH-R, we extended enrollment and follow-up on our published phase II trial and independent series. Ninety-three patients received dose-adjusted-EPOCH-R without radiotherapy. End-of-treatment PET was performed in 80 patients, of whom 57 received 144 serial scans. One nuclear medicine physician from each institution blindly reviewed all scans from their respective institution. End-of-treatment PET was negative (Deauville 1-3) in 55 (69%) patients with one treatment failure (8-year event-free and overall survival of 96.0% and 97.7%). Among 25 (31%) patients with a positive (Deauville 4-5) end-of-treatment PET, there were 5 (20%) treatment failures (8-year event-free and overall survival of 71.1% and 84.3%). Linear regression...
Source: Haematologica - Category: Hematology Authors: Tags: Haematologica Source Type: research