TNFRSF8 and neoplasm: Median PFS was 6 months, and the copy number of CAR transgenes in PB peaked about 1 week after infusion and decreased to the baseline level by 4–8 weeks in most patients, while in which time relatively higher numbers in biopsy tissues were detected, and a corresponding decrease of CD30+ tumor cells was observed in some patients, highlighting that CAR-T cells could traffic to tumor sites and remain functional.