Among patients with a BMI less than 30 (non-obese patients), the rs7949972 ELF5 variant was associated with a reduced risk of severe COVID-19 (protective allele T, OR = 0.67, 95% CI = 0.47–0.95, p = 0.02, pbonf = 0.04) (Table 4). Here, ELF5 is linked to COVID-19.