As MAIT cells have been shown to be affected in metabolic diseases such as T2D20 and activation is dependent on the amino acid transporter SLC7A5 which has a high affinity of histidine,46 we measured the proportion of circulating MAIT cells, which were identified by simultaneous expression of CD161 and TCR Va7.2. The gene discussed is KLRB1; the disease is Other metabolic disease.