
ENPP1 buffers extracellular cGAMP in brown adipose tissue to limit insulin resistance
ENPP1 has long been linked with metabolic diseases, with the common ENPP1 K173Q variant conferring increased risk for type 2 diabetes. Here, we demonstrate that the K173Q variant has decreased cGAMP hydrolysis activity, suggesting that this loss of enzymatic function could contribute to its pathogenesis.








