IL6 and chronic inflammatory demyelinating polyradiculoneuropathy: G allele carriers for the rs1800795 polymorphism in the gene encoding IL-6 in the group of CIDP patients were more likely to have T2D (96.0% vs. 75.8%, p = 0.032, OR = 7.660 (0.954–61.504)), compared to CIDP patients without the G allele.