Cytokine and chemokine profiles in episodes of persistent high-risk febrile neutropenia in children with cancer. (December 2021)

• Record Type: Journal Article
• Authors: Tapia, Lorena I.; Olivares, Mauricio; Torres, Juan P.; De la Maza, Verónica; Valenzuela, Romina; Contardo, Verónica; Tordecilla, Juan; Álvarez, Ana M.; Varas, Mónica; Zubieta, Marcela; Salgado, Carmen; Venegas, Marcela; Gutiérrez, Valentina; Claverie, Ximena; Villarroel, Milena; Santolaya, María E.
• Is Part Of: Cytokine. Volume 148(2021)
• Publication Date: 2021-12
• Subjects: Febrile neutropenia -- Immune response -- Cytokines -- Chemokines -- Infection; Cytokines -- Periodicals; 571.844
• DOI: 10.1016/j.cyto.2021.155619
• Languages: English
• ISSNs: 1043-4666

Abstract

Highlights: Etiological diagnosis is relevant in children with febrile neutropenia (FN). Host response, including cytokines profiles, can guide the differential diagnosis. A specific immune response can be identified in children with FN. Serum G-CSF, IL-6, IP-10, and Flt-3L can guide the differentiation of FN etiology. Abstract: Background: In children with cancer and persistent high-risk febrile neutropenia (HRFN), cytokines/chemokines profiles can guide the differentiation of febrile neutropenia (FN) due to infections and episodes of unknown origin (FN-UO). Methods: A prospective, multicenter study in Santiago, Chile included patients ≤ 18 years with cancer and HRFN. Clinical and microbiological studies were performed according to validated protocols. Serum levels of 38 cytokines/chemokines were determined on day 4 of persistent HRFN. We performed comparisons between i) HRFN episodes with a detected etiological agent (FN-DEA) and FN-UO, and ii) bacterial versus viral infections. ROC curves were used to assess the discriminatory power of the analytes. Results: 110 HRFN episodes were enrolled (median age 8 years, 53% female). Eighty-four patients were FN-DEA: 44 bacterial, 32 viral, and 8 fungal infections. Twenty-six cases were categorized as FN-UO. Both groups presented similar clinical and laboratory characteristics. Nineteen out of 38 analytes had higher concentrations in the FN-DEA versus FN-UO group. G-CSF, IL-6, and Flt-3L showed the highest discriminatory power to detect infection (AUC 0.763, 0.741, 0.701). Serum levels of G-CSF differentiated bacterial infections and IP-10 viral agents. A combination of G-CSF, IL-6, Flt-3L, and IP-10 showed an AUC of 0.839, 75% sensitivity, and 81% specificity. Conclusion: A specific immune response is present on day four of persistent HRFN in children with cancer. We propose a combined measure of serum concentrations of G-CSF, IL-6, IP-10, and Flt-3L, in order to predict the presence of an infectious agent as compared to an episode of FN with unknown origin.