Adoptive transfer of autologous T cells improves T-cell repertoire diversity and long-term B-cell function in pediatric patients with neuroblastoma
SA Grupp, EL Prak, J Boyer, KR McDonald… - Clinical Cancer …, 2012 - AACR
SA Grupp, EL Prak, J Boyer, KR McDonald, S Shusterman, E Thompson, C Callahan…
Clinical Cancer Research, 2012•AACRPurpose: Children with high-risk neuroblastoma have a poor prognosis with chemotherapy
alone, and hematopoietic stem cell transplantation offers improved survival. As a dose-
escalation strategy, tandem transplants have been used, but are associated with persistent
immunocompromise. This study evaluated the provision of an autologous costimulated,
activated T-cell product to support immunologic function. Experimental Design: Nineteen
subjects with high-risk neuroblastoma were enrolled in a pilot phase and 23 subjects were …
alone, and hematopoietic stem cell transplantation offers improved survival. As a dose-
escalation strategy, tandem transplants have been used, but are associated with persistent
immunocompromise. This study evaluated the provision of an autologous costimulated,
activated T-cell product to support immunologic function. Experimental Design: Nineteen
subjects with high-risk neuroblastoma were enrolled in a pilot phase and 23 subjects were …
Abstract
Purpose: Children with high-risk neuroblastoma have a poor prognosis with chemotherapy alone, and hematopoietic stem cell transplantation offers improved survival. As a dose-escalation strategy, tandem transplants have been used, but are associated with persistent immunocompromise. This study evaluated the provision of an autologous costimulated, activated T-cell product to support immunologic function.
Experimental Design: Nineteen subjects with high-risk neuroblastoma were enrolled in a pilot phase and 23 subjects were entered in to the randomized study. Immunologic reconstitution was defined by flow cytometric and functional assays. Next-generation sequencing was conducted to identify changes to the T-cell repertoire. Twenty-two patients were vaccinated to define effects on antibody responses.
Results: Subjects who received their autologous costimulated T-cell product on day 2 had significantly superior T-cell counts and T-cell proliferation compared with those who received T cells on day 90. Early administration of autologous T cells suppressed oligoclonality and enhanced repertoire diversity. The subjects who received the day 2 T-cell product also had better responses to the pneumococcal vaccine.
Conclusions: The infusion of activated T cells can improve immunologic function especially when given early after transplant. This study showed the benefit of providing cell therapies during periods of maximum lymphopenia. Clin Cancer Res; 18(24); 6732–41. ©2012 AACR.
AACR