GRIN2B and myeloid sarcoma: Moreover, axon GO analysis of the DEG dataset of MS white matter lesions (Elkjaer et al., 2019) showed significant upregulation of transcripts involved in potassium homeostasis and glutamate receptor signaling (e.g., KCNJ6, KCNMA1, GRIN2B), particularly in chronic active MS lesions (Supplementary Figure 5C and Supplementary Table 5).