%0 Journal Article
%T The association between active tumor volume, total lesion glycolysis and levels of S-100B and LDH in stage IV melanoma patients.
%A Deckers EA
%A Kruijff S
%A Brouwers AH
%A van der Steen K
%A Hoekstra HJ
%A Thompson JF
%A Vállez García D
%A Wevers KP
%J Eur J Surg Oncol
%V 46
%N 11
%D 11 2020
%M 32819759
%F 4.037
%R 10.1016/j.ejso.2020.07.011
%X The Standardized Uptake Value (SUV) in single lesions on 18F-FDG PET/CT scans and serum S-100B concentrations are inversely associated with disease-free survival in stage IV melanoma. The aim of this study was to assess the association between biomarkers (S-100B, LDH) and the PET-derived metrics SUVmean/max, metabolic active tumor volume (MATV), and total lesion glycolysis (TLG) in stage IV melanoma in order to understand what these biomarkers reflect and their possible utility for follow-up.<BR>In 52 stage IV patients the association between PET-derived metrics and the biomarkers S-100B and LDH was assessed and the impact on survival analyzed.<BR>S-100B was elevated (>0.15 μg/l) in 37 patients (71%), LDH in 11 (21%). There was a correlation between S-100B and LDH (R2 = 0.19). S-100B was correlated to both MATV (R2 = 0.375) and TLG (R2 = 0.352), but LDH was not. Higher MATV and TLG levels were found in patients with elevated S-100B (p < 0.001) and also in patients with elevated LDH (>250 U/l) (p < 0.001). There was no association between the biomarkers and SUVmean/max. Survival analysis indicated that LDH was the only predictor of melanoma-specific survival.<BR>In newly diagnosed stage IV melanoma patients S-100B correlates with 18F-FDG PET/CT derived MATV and TLG in contrast to LDH, is more often elevated than LDH (71% vs. 21%) and seems to be a better predictor of disease load and disease progression. However, elevated LDH is the only predictor for survival. The biomarkers, S-100B and LDH appear to describe different aspects of the extent of metastatic disease and of tumornecrosis.