CCL5 and severe acute respiratory syndrome: RANTES -28 G allele associated with death from SARS in a gene-dosage dependent manner (P = 0.014), with -28 CG and GG individuals having a 2.12-fold (95% CI: 1.11–4.06) and 4.01-fold (95% CI: 1.30:12.4) increased risk of death from SARS respectively (Table 5).