TY - JOUR
T1 - Prospective Study of 3′-Deoxy-3′-18F-Fluorothymidine PET for early interim response assessment in advanced-stage B-cell lymphoma
AU - Sch der, Heiko
AU - Zelenetz, Andrew D.
AU - Hamlin, Paul
AU - Gavane, Somali
AU - Horwitz, Steven
AU - Matasar, Matthew
AU - Moskowitz, Alison
AU - Noy, Ariela
AU - Palomba, Lia
AU - Portlock, Carol
AU - Straus, David
AU - Grewal, Ravinder
AU - Migliacci, Jocelyn C.
AU - Larson, Steven M.
AU - Moskowitz, Craig H.
PY - 2016/5/1
Y1 - 2016/5/1
N2 - Current clinical and imaging tools remain suboptimal for early assessment of prognosis and treatment response in aggressive lymphomas. PET with 3′-deoxy-3′-18F-fluorothymidine (18F-FLT) can be used to measure tumor cell proliferation and treatment response. In a prospective study in patients with advanced-stage B-cell lymphoma, we investigated the prognostic and predictive value of 18F-FLT PET in comparison to standard imaging with 18F-FDG PET and clinical outcome. Methods: Sixty-five patients were treated with an induction/consolidation regimen consisting of 4 cycles of R-CHOP-14 (rituximab, cyclophosphamide, doxorubicin, vincristine, prednisone) followed by 3 cycles of ICE (ifosfamide, carboplatin, etoposide). 18F-FLT PET was performed at baseline and at interim (iPET) after 1.2 cycles of therapy. 18F-FDG PET was performed at baseline, after cycle 4, and at the end of therapy. The relationship between PET findings, progressionfree survival (PFS) and overall survival (OS) was investigated. Results: With a median follow-up of 51 mo, PFS and OS were 71% and 86%, respectively. 18F-FLT iPET, analyzed visually (using a 5-point score) or semiquantitatively (using SUV and δSUV) predicted both PFS and OS (P < 0.01 for all parameters). Residual 18F-FLT SUVmax on iPET was associated with an inferior PFS (hazard ratio, 1.26, P 5 0.001) and OS (hazard ratio, 1.27, P 5 0.002). When 18F-FDG PET was used, findings in the end of treatment scan were better predictors of PFS and OS than findings on the interim scan. Baseline PET imaging parameters, including SUV, proliferative volume, or metabolic tumor volume, did not correlate with outcome. Conclusion: 18F-FLT PET after 1.2 cycles of chemotherapy predicts PFS and OS, and a negative 18F-FLT iPET result may potentially help design risk-adapted therapies in patients with aggressive lymphomas. In contrast, the positive predictive value of 18F-FLT iPET remains too low to justify changes in patient management. 2016 by the Society of Nuclear Medicine and Molecular Imaging, Inc.
AB - Current clinical and imaging tools remain suboptimal for early assessment of prognosis and treatment response in aggressive lymphomas. PET with 3′-deoxy-3′-18F-fluorothymidine (18F-FLT) can be used to measure tumor cell proliferation and treatment response. In a prospective study in patients with advanced-stage B-cell lymphoma, we investigated the prognostic and predictive value of 18F-FLT PET in comparison to standard imaging with 18F-FDG PET and clinical outcome. Methods: Sixty-five patients were treated with an induction/consolidation regimen consisting of 4 cycles of R-CHOP-14 (rituximab, cyclophosphamide, doxorubicin, vincristine, prednisone) followed by 3 cycles of ICE (ifosfamide, carboplatin, etoposide). 18F-FLT PET was performed at baseline and at interim (iPET) after 1.2 cycles of therapy. 18F-FDG PET was performed at baseline, after cycle 4, and at the end of therapy. The relationship between PET findings, progressionfree survival (PFS) and overall survival (OS) was investigated. Results: With a median follow-up of 51 mo, PFS and OS were 71% and 86%, respectively. 18F-FLT iPET, analyzed visually (using a 5-point score) or semiquantitatively (using SUV and δSUV) predicted both PFS and OS (P < 0.01 for all parameters). Residual 18F-FLT SUVmax on iPET was associated with an inferior PFS (hazard ratio, 1.26, P 5 0.001) and OS (hazard ratio, 1.27, P 5 0.002). When 18F-FDG PET was used, findings in the end of treatment scan were better predictors of PFS and OS than findings on the interim scan. Baseline PET imaging parameters, including SUV, proliferative volume, or metabolic tumor volume, did not correlate with outcome. Conclusion: 18F-FLT PET after 1.2 cycles of chemotherapy predicts PFS and OS, and a negative 18F-FLT iPET result may potentially help design risk-adapted therapies in patients with aggressive lymphomas. In contrast, the positive predictive value of 18F-FLT iPET remains too low to justify changes in patient management. 2016 by the Society of Nuclear Medicine and Molecular Imaging, Inc.
KW - B-cell cell lymphoma
KW - FDG PET
KW - FLT PET
KW - Outcome
UR - http://www.scopus.com/inward/record.url?scp=84966990577&partnerID=8YFLogxK
U2 - 10.2967/jnumed.115.166769
DO - 10.2967/jnumed.115.166769
M3 - Article
C2 - 26719374
AN - SCOPUS:84966990577
SN - 0161-5505
VL - 57
SP - 728
EP - 734
JO - Journal of Nuclear Medicine
JF - Journal of Nuclear Medicine
IS - 5
ER -