129263-144

HPV-targeted tumor-infiltrating lymphocytes for cervical cancer.

Category: 
Developmental Therapeutics - Immunotherapy
Session Type and Session Title: 
Oral Abstract Session, Developmental Therapeutics - Immunotherapy
Abstract Number: 

LBA3008

Citation: 

J Clin Oncol 32:5s, 2014 (suppl; abstr LBA3008)

Author(s): 

Christian S. Hinrichs, Sanja Stevanovic, Lindsey Draper, Robert Somerville, John Wunderlich, Nicholas P. Restifo, Richard Sherry, Phan Q Giao, Udai S. Kammula, James C. Yang, Steven A. Rosenberg; National Cancer Institute, Bethesda, MD; Surgery Branch, National Cancer Institute, Bethesda, MD


Abstracts that were granted an exception in accordance with ASCO's Conflict of Interest Policy are designated with a caret symbol (^).

Abstract Disclosures

Abstract: 

Background: Adoptive T-cell therapy (ACT) is a promising cancer treatment modality with potentially broad application. It is not known if ACT can mediate regression of carcinomas, the most common solid tumors in humans. We studied carcinoma of the uterine cervix, a virally induced malignancy that constitutively expresses the HPV E6 and E7 oncoproteins, as a model cancer to test if ACT can mediate regression of an epithelial malignancy. Methods: We initiated a clinical trial to treat metastatic HPV+ cancers with tumor-infiltrating lymphocytes (TIL) selected for HPV E6- and E7-reactivity (HPV-TIL). Patients from the cervical cancer cohort are reported here. HPV-TIL infusion was preceded by non-myeloablative conditioning and followed by high-dose bolus aldesleukin. HPV-reactivity was assessed by ELISPOT, IFN-gamma production, and CD137 expression assays. Results: Nine patients were treated on the study. They received a median of 81 x 109 T cells (range 33 to 159 x 109) as a single infusion. The infused cells possessed reactivity against high-risk HPV E6 and/or E7 in 6/8 patients. The two patients with no HPV reactivity did not respond to treatment. 3/6 patients with HPV reactivity demonstrated objective tumor responses by RECIST (1 PR and 2 CR). One patient had a 39% best response. Two patients with widespread metastases had complete tumor responses that are ongoing 18 and 11 months after treatment. One patient with a complete response had a chemotherapy-refractory HPV-16+ squamous cell carcinoma and the other a chemoradiation-refractory HPV-18+ adenocarcinoma. Both patients demonstrated prolonged repopulation with HPV-reactive T cells following treatment. Increased frequencies of HPV-specific T cells were detectable after 13 months in one patient and 6 months in the other. Two patients with HPV-reactive TIL that did not respond to treatment did not display repopulation with HPV-reactive T cells. Conclusions: HPV-TIL can mediate durable, complete regression of metastatic cervical cancer. Continued investigation of HPV-TIL for cervical cancer, and possibly other HPV+ malignancies, is warranted. Cellular therapy can mediate complete regression of an epithelial malignancy. Clinical trial information: NCT01585428.

Presentations by Christian S. Hinrichs:

  1. Meeting: 2014 ASCO Annual Meeting Abstract No: LBA3008
    Session: Developmental Therapeutics - Immunotherapy (Oral Abstract Session)