Hu and his teammates successfully encapsulated CAR‐T cells that target on human chondroitin sulfate proteoglycan 4 (CSPG4), and aPDL1 antibody conjugated platelets into the hydrogel reservoir.[109] CSPG4 is a specific marker with significantly higher expression in human melanoma cells than in normal cells, which is a target for CAR‐T cells to recognize and eradicate residual melanoma. This evidence concerns the gene CSPG4 and melanoma.