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BACKGROUND:
(IL-2) following a non-myeloablative lymphodepleting chemotherapy preparative regimen.
IL-2 administration has been shown to increase the number of T regulatory cells and in our trials we have found a direct relationship between the number of IL-2 doses and the reconstitution of patients at one week with cluster of differentiation 4 + forkhead box P3 (CD4+ Foxp3) + T regulatory cells.
In our analysis of factors that relate to the ability of this treatment to mediate objective responses, we have found a highly significant inverse correlation between reconstitution of CD4+ Foxp3+ T regulatory cells and the likelihood of achieving an objective response.
In our prior clinical trials of cell transfer using TIL after lymphodepletion with or without
2 (gray)Gy total body irradiation, patients who experienced an objective response received fewer doses of IL-2 compared to non-responders (p=0.007 and 0.03 respectively).
High levels of the homeostatic T cell growth factor, IL-15, are present in patient serum after the lymphodepleting regimen at the time of cell transfer.
These factors raise the possibility that IL-2 administration is not required after cell transfer.
OBJECTIVES:
ELIGIBILITY:
DESIGN:
autologous TIL.
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Note: Patients may have undergone minor surgical procedures within the past 3 weeks, as long as all toxicities have recovered to grade 1 or less or as specified in the eligibility criteria.
EXCLUSION CRITERIA:
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18 participants in 1 patient group
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Data sourced from clinicaltrials.gov
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