For instance, the IgM-related risk was increased in patients with fever (cOR = 2.91, 95%CI 1.30–6.49, p = 0.009), ageusia (cOR = 11.62, 95%CI 2.67–50.56, p = 0.0001), and anosmia (cOR = 5.18, 95%CI 1.46–18.38, p = 0.01). The gene discussed is CD40LG; the disease is Kallmann syndrome.