SLC44A1 and neuroblastoma: According to the analysis of the single-cell transcriptome of the GSE137804 dataset, the cells with the highest percentages of CHGA and SLC44A1 transcripts were malignant NB cells and fibroblasts, respectively, whereas ATP6V0A1 was expressed by both malignant cells and fibroblasts, and SELL-expressing cells were the main immune cell subpopulation, which included B cells, T cells and plasmacytoid dendritic cells (pDCs).