Solute carrier (SLC) transporters serve as gatekeepers for the cellular influx and efflux of amino acids, orchestrating a complex network of transport systems to sustain intracellular amino acid homeostasis.[14] Notably, several SLC transporters are upregulated in cancer, enabling tumors to acquire diverse nutrients from the extracellular milieu to meet their heightened metabolic demands.[15] Consequently, targeting SLC‐mediated nutrient uptake represents a promising therapeutic strategy for cancer treatment. The gene discussed is CCL21; the disease is cancer.