Aviraemic individuals displayed significantly higher IFNγ T cell responses to NS1 (p = 0.002), NS3 (p = 0.02), NS5 (p = 0.02) and DENV-ALL pooled peptides (p = 0.0004) when compared to those who were viraemic at the time of recruitment. This evidence concerns the gene KRAS and acute lymphoblastic leukemia.