RGD Reference Report - PD-1 is expressed by tumor-infiltrating immune cells and is associated with poor outcome for patients with renal cell carcinoma. - Rat Genome Database

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PD-1 is expressed by tumor-infiltrating immune cells and is associated with poor outcome for patients with renal cell carcinoma.

Authors: Thompson, RH  Dong, H  Lohse, CM  Leibovich, BC  Blute, ML  Cheville, JC  Kwon, ED 
Citation: Thompson RH, etal., Clin Cancer Res. 2007 Mar 15;13(6):1757-61.
RGD ID: 7248680
Pubmed: PMID:17363529   (View Abstract at PubMed)
DOI: DOI:10.1158/1078-0432.CCR-06-2599   (Journal Full-text)

PURPOSE: B7-H1 is expressed by clinically aggressive forms of renal cell carcinoma (RCC) and predicts adverse outcome. B7-H1 is known to impair host immunity via interaction with the Programmed Death-1 (PD-1) receptor, which is expressed by activated T cells. Levels of immune cells expressing PD-1 (PD-1(+)) in clinical RCC tumors have not been evaluated. Thus, we tested whether immune cell PD-1 expression is observed within aggressive RCC tumors. EXPERIMENTAL DESIGN: Between 2000 and 2003, 267 patients underwent nephrectomy at our institution for clear cell RCC and had fresh-frozen tissue available for review. These RCC specimens were immunostained using anti-PD-1 (clone MIH4) and outcome analyses were conducted. RESULTS: Mononuclear immune cell infiltration was observed in 136 (50.9%) specimens. PD-1(+) immune cells were present in 77 of these 136 (56.6%) tumors. In contrast, RCC tumor cells did not express PD-1. Patients with PD-1(+) immune cells were significantly more likely to harbor B7-H1(+) tumor cells (P < 0.001), larger tumors (P = 0.001), and tumors of higher nuclear grade (P = 0.001). Likewise, intratumoral PD-1(+) immune cells were associated with advanced tumor-node-metastasis stage (P = 0.005), coagulative tumor necrosis (P = 0.027), and sarcomatoid differentiation (P = 0.008). With a median follow-up of 2.9 years, 52 patients died from RCC. Univariately, patients with PD-1(+) immune cells were at significant risk of cancer-specific death compared with PD-1(-) patients (risk ratio, 2.24; P = 0.004). CONCLUSIONS: Levels of immune cells expressing PD-1 were increased in patients with high-risk RCC tumors. Interactions between immune cell PD-1 and B7-H1 may promote cancer progression by contributing to immune dysfunction in patients with RCC.

RGD Manual Disease Annotations    Click to see Annotation Detail View
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
renal cell carcinoma disease_progressionIEP 7248680 RGD 
renal cell carcinoma disease_progressionISOPDCD1 (Homo sapiens)7248680; 7248680 RGD 

Objects Annotated

Genes (Rattus norvegicus)
Pdcd1  (programmed cell death 1)

Genes (Mus musculus)
Pdcd1  (programmed cell death 1)

Genes (Homo sapiens)
PDCD1  (programmed cell death 1)


Additional Information