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Short answer What to know about cell therapy follow-up Common questions Related questions Sources**Afamitresgene autoleucel (Tecelra) can persist in your body for more than 3 years after infusion.**
This treatment uses your own genetically modified immune cells to target synovial sarcoma. These living cells multiply after infusion, then decline, with persistence varying widely between people. There is no established date when all the cells leave your body, and their presence does not guarantee ongoing cancer control. Keep your oncology visits and scheduled blood tests even when you feel well.
What to know about cell therapy follow-up
Common questions
How long does Afamitresgene Autoleucel Injection stay in your system?
Afamitresgene autoleucel (Tecelra) can remain in your body for years: persistence beyond 3 years has been observed after infusion. It contains your own genetically modified T cells, which target synovial sarcoma. These living cells multiply and then decline, so there is no fixed clearance time that predicts when they will disappear from your body. Cell persistence does not tell you how long cancer control or side effects will last. Your oncology team should guide your follow-up, blood tests, and questions about ongoing symptoms.