Immunohistochemistry assessment of tissue neutrophil-to-lymphocyte ratio predicts outcomes in melanoma patients treated with anti-programmed cell death 1 therapy

Autor(es)

Teixeira, Renan J. ; de Souza, Vinicius G. ; Sorroche, Bruna P. ; Paes, Victor G. ; Zambuzi-Roberto, Fabiana A. ; Pereira, Caio A. D. ; Vazquez, Vinicius L. ; Arantes, Lidia M. R. B.

• Tipo de documento: Artigo Científico
• Fonte: Melanoma Research; v. 34, n. 3, p. 7-pg., 2024-06-01.

Resumo

Elevated neutrophil-to-lymphocyte ratio (NLR) is associated with diminished immunotherapy response in metastatic melanoma. Although NLR assessment in peripheral blood is established, tissue dynamics remain insufficiently explored. This study aimed to evaluate tissue NLR (tNLR)'s predictive potential through immunohistochemistry in immunotherapy-treated melanoma. Fifty melanoma patients who underwent anti-programmed cell death 1 (PD-1) therapy were assessed. Hematological, clinical and tumor features were collected from medical records. Responses were categorized using the Response Evaluation Criteria in Solid Tumors for immunotherapy (iRECIST) guidelines. Immunohistochemistry for tumor-infiltrating T cells (cluster differentiation 3) and neutrophils (myeloperoxidase) was performed on formalin-fixed paraffin-embedded tumor samples. NLR, derived NLR (dNLR) and tNLR were calculated. Overall survival (OS) and survival following immunotherapy (SFI) were calculated from diagnosis or immunotherapy start to loss of follow-up or death. Patients with high tNLR presented improved OS (P = 0.038) and SFI with anti-PD-1 therapy (P = 0.006). Both NLR and dNLR were associated with OS (P = 0.038 and P = 0.046, respectively) and SFI (P = 0.001 and P = 0.019, respectively). NLR was also associated with immunotherapy response (P = 0.007). In conclusion, tNLR emerged as a novel potential biomarker of enhanced survival post anti-PD-1 therapy, in contrast to classical NLR and dNLR markers. (AU)

• Processo FAPESP: 19/07111-9 - Inibidores de checkpoint imunológico: imunofenotipagem e desfecho clínico para predição de resposta no Hospital de Câncer de Barretos
• Beneficiário: Lidia Maria Rebolho Batista Arantes
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores
• Processo FAPESP: 21/10922-9 - Analisando o perfil epigenético das células T CD8+ infiltrantes de tumor para superar o meio imunossupressor dos nichos hipóxicos tumorais
• Beneficiário: Bruna Pereira Sorroche
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado
• Processo FAPESP: 19/03570-9 - Inibidores do checkpoint imunológico: desfecho clínico e biomarcadores para predição de resposta em pacientes com Melanoma
• Beneficiário: Bruna Pereira Sorroche
• Modalidade de apoio: Bolsas no Brasil - Doutorado