PMID- 28072766 OWN - NLM STAT- MEDLINE DCOM- 20170608 LR - 20181113 IS - 1532-1827 (Electronic) IS - 0007-0920 (Print) IS - 0007-0920 (Linking) VI - 116 IP - 3 DP - 2017 Jan TI - The impact of body composition parameters on ipilimumab toxicity and survival in patients with metastatic melanoma. PG - 310-317 LID - 10.1038/bjc.2016.431 [doi] AB - BACKGROUND: Body composition is an important predictor of drug toxicity and outcome. Ipilimumab (Ipi), a monoclonal antibody used to treat metastatic melanoma, has specific toxicities. No validated biomarkers that predict Ipi toxicity and efficacy exist. Also, the impact of Ipi on body composition has not been established. METHODS: Patients with metastatic melanoma treated with Ipi between 2009 and 2015 were included. Body composition was assessed by computed tomography at baseline and after four cycles of Ipi. Sarcopenia and low muscle attenuation (MA) were defined using published cut-points. All adverse events (AEs) and immune-related AEs (irAEs) were recorded (Common Terminology Criteria For Adverse Event V.4.0). RESULTS: Eighty-four patients were included in this study (62% male, median age 54 years). At baseline, 24% were sarcopenic and 33% had low MA. On multivariate analysis, sarcopenia and low MA were significantly associated with high-grade AEs (OR=5.34, 95% CI: 1.15-24.88, P=0.033; OR=5.23, 95% CI: 1.41-19.30, P=0.013, respectively), and low MA was associated with high-grade irAEs (OR=3.57, 95% CI: 1.09-11.77, P=0.036). Longitudinal analysis (n=59) revealed significant reductions in skeletal muscle area (SMA), total body fat-free mass, fat mass (all P<0.001) and MA (P=0.030). Mean reduction in SMA was 3.3%/100 days (95% CI: -4.48 to -1.79%, P<0.001). A loss of SMA ⩾7.5%/100 days (highest quartile) was a significant predictor of overall survival in multivariable Cox regression analysis (HR: 2.1, 95% CI: 1.02-4.56, P=0.046). CONCLUSIONS: Patients with sarcopenia and low MA are more likely to experience severe treatment-related toxicity to Ipi. Loss of muscle during treatment was predictive of worse survival. Treatments to increase muscle mass and influence outcome warrant further investigation. FAU - Daly, Louise E AU - Daly LE AD - School of Food and Nutritional Sciences/APC Microbiome Institute, University College Cork, Cork, Ireland. FAU - Power, Derek G AU - Power DG AD - Department of Medical Oncology, Cork University Hospital, Cork, Ireland. FAU - O'Reilly, Aine AU - O'Reilly A AD - Department of Medical Oncology, University Hospital Galway, Galway, Ireland. FAU - Donnellan, Paul AU - Donnellan P AD - Department of Medical Oncology, University Hospital Galway, Galway, Ireland. FAU - Cushen, Samantha J AU - Cushen SJ AD - School of Food and Nutritional Sciences, University College Cork, Cork, Ireland. FAU - O'Sullivan, Kathleen AU - O'Sullivan K AD - School of Mathematical Science, University College Cork, Cork, Ireland. FAU - Twomey, Maria AU - Twomey M AD - Department of Radiology, Cork University Hospital, Cork, Ireland. FAU - Woodlock, David P AU - Woodlock DP AD - Department of Radiology, University Hospital Galway, Galway, Ireland. FAU - Redmond, Henry P AU - Redmond HP AD - Department of Surgery, Cork University Hospital and University College Cork, Cork, Ireland. FAU - Ryan, Aoife M AU - Ryan AM AD - School of Food and Nutritional Sciences, University College Cork, Cork, Ireland. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20170110 PL - England TA - Br J Cancer JT - British journal of cancer JID - 0370635 RN - 0 (Antibodies, Monoclonal) RN - 0 (Ipilimumab) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Antibodies, Monoclonal/administration & dosage/*adverse effects MH - Body Composition/drug effects/*physiology MH - Female MH - Humans MH - Ipilimumab MH - Male MH - Melanoma/*drug therapy/*mortality/pathology MH - Middle Aged MH - Neoplasm Metastasis MH - Retrospective Studies MH - Sarcopenia/mortality MH - Skin Neoplasms/*drug therapy/*mortality/pathology MH - Survival Analysis MH - Young Adult PMC - PMC5294486 COIS- The authors declare no conflict of interest. EDAT- 2017/01/11 06:00 MHDA- 2017/06/09 06:00 PMCR- 2018/01/31 CRDT- 2017/01/11 06:00 PHST- 2016/08/23 00:00 [received] PHST- 2016/10/28 00:00 [revised] PHST- 2016/12/05 00:00 [accepted] PHST- 2017/01/11 06:00 [pubmed] PHST- 2017/06/09 06:00 [medline] PHST- 2017/01/11 06:00 [entrez] PHST- 2018/01/31 00:00 [pmc-release] AID - bjc2016431 [pii] AID - 10.1038/bjc.2016.431 [doi] PST - ppublish SO - Br J Cancer. 2017 Jan;116(3):310-317. doi: 10.1038/bjc.2016.431. Epub 2017 Jan 10.