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The prognostic value of systemic inflammatory factors in BRAF (V600E) mutant metastatic colorectal cancer (mCRC).

2019; Lippincott Williams & Wilkins; Volume: 37; Issue: 4_suppl Linguagem: Inglês

10.1200/jco.2019.37.4_suppl.622

1527-7755

Nieves Martínez Lago, Marta Covela Rúa, Elena Vázquez, Ana Fernández Montés, Juan Cruz de la Cámara Gómez, Carlos Mendez‐Dorantes, Mónica Jorge Fernández, Antia Cousillas Castiñeira, Begoña Graña, Guillermo Alfonso Quintero Aldana, Sonia Candamio Folgar, Mercedes Salgado Fernández, María Luz Pellón Augusto, Paula González Villarroel, Elena Gallardo Martín, Marta Campos, Francisca Rivera, C. Grande Ventura, Alberto Carral Maseda, Margarita Reboredo López,

Cancer Diagnosis and Treatment

622 Background: Multiple studies have reported prognostic association of neutrophil to lymphocyte ratio (NLR), platelet to lymphocyte ratio (PLT) and albumin levels including patients with early and advanced metastatic colorectal cancer. However, it is unknown the prognostic impact in patients with BRAF (V600E) mutant metastatic colorectal cancer (mCRC). Methods: We conducted an observational, retrospective, multicentric study of patients with BRAF V600E-mt mCRC treated at nine university Spanish hospitals belonging to GITuD (Galician Research Group on Digestive Tumors). Demographic, clinic, pathological characteristics, overall survival (OS) and progression free survival (PFS) data were retrospectively analyzed. Results: Data from 65 pts. treated between November 2010 to June 2018 were recorded. Median age was 62.8 years (range 30-83), 55.4 % female, 75.4% ECOG PS0-1, 49.2% right-sided, 35.2% high grade, 69.2% synchronous presentation, 66.2% primary tumor resection and median metastatic locations was 2 (range 1-5). With a median follow up of 64.6 months, median OS was 12.9 months (95% CI, 9.8-16.0) and first line PFS was 4.1 months (95% CI, 2.7-5.5). NLR (HR 2.294; p = 0.004), PLR (HR 6.329; p = 0.028) and albumin levels (HR 2.575, p = 0.011) were independent prognostic factors for OS. Patients with higher NLR (> 3 vs. < 3): had a significantly lower OS 6.8 versus 17.5 months (HR 2.294; 95% CI 1.3-4.1, p = 0.004), which was also true for patients with higher PLR (> 200 vs. < 200): with OS 6.3 versus 14.5 months (HR 1.879; 95% CI 1.1-3.3, p = 0.028), while patients with low albumin had lower OS 6.8 versus 13.4 months (HR 2.575; 95% CI 1.2-5.5, p = 0.011). NLR was positively associated with PLR (p < 0.001). Neither NLR (p = 0.190) or PLR (p = 0.327) were associated with low albumin levels. A Systemic Inflammation Score (assigning one point for each factor) was predictive of survival: OS 0/1/2/3 factors were 17.7 versus 8.7 versus 9.7 versus 5.0 months (p < 0.001). Patients with Systemic Inflamation Score = 0 had significantly higher OS: 17.7 versus 8.2 months (HR 0.357; 95% CI 0.2-0.7, p = 0.001). Conclusions: NLR, PLR and albumin levels are significant prognostic factors in patients with BRAF V600E-mt mCRC.