However, 97 IgM sustainers had lower BMI (MD: 1.30 kg/m2, P = 0.002), higher rate of anosmia (MD: 11.5%, P = 0.047), and lower rates of cirrhosis (MD: 1.5%, P = 0.025) and GI bleeding (MD: 1.6%, P = 0.025) in comparison with the IgM decayers. The gene discussed is CD40LG; the disease is Kallmann syndrome.