Abstract 5477
Background
High BMI is associated with better survival in metastatic melanoma patients (MM pts), while sarcopenia is linked to poorer outcome in pts with stage III. The aim of this study was to examine the prognostic impact of body-mass index (BMI), baseline sarcopenia, loss of skeletal muscle mass (LSMM) on overall survival (OS) in MM pts who received immunotherapy (IT).
Methods
The retrospective series included 42 consecutive MM pts (Jan 2011-Dec 2018) treated with IT in a single referral center. Sarcopenia was defined according to Prado’s criteria. Skeletal muscle index (SMI) was calculated as cross-sectional-area of muscle (cm2), using CT-scan, at the L3 level divided by the square of the height (m2). Early LSMM, during IT, was defined as a decrease in SMI > =10% from baseline at first evaluation. BMI was calculated as weight (kg) divided by the square of height (m2) and categorized according to standard WHO definitions. Weight loss was analyzed as continuous variable.
Results
At baseline, 27 pts (64,3%) were male, 26 pts (61.9%) were < 70 years and 31 pts (73.8%) had ECOG PS = 0. Overall, 26 patient (61.9%) had LDH 1367POS univariate analysis OS multivariate analysis Factors HR p 95% Confidence Interval HR p 95% Confidence Interval PS ECOG³1 3.02 0.01 (1.29-7.08) 3.99 0.043 (1.04-15.31) Weight loss 0.88 0.03 (0.78-0.98) 0.85 0.02 (0.74-0.97) Early LSMM > =10% 4.24 0.006 (1.50-11.97) 3.09 0.04 (1.04-9.22)
Conclusions
Early LSMM > =10% and ECOG PS > =1 may negatively influence the outcome of MM pts treated with IT. Further prospective studies are needed to confirm these data.
Clinical trial identification
Editorial acknowledgement
Legal entity responsible for the study
Maria Grazia Vitale.
Funding
Has not received any funding.
Disclosure
All authors have declared no conflicts of interest.
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