RGD Reference Report - The survivin:fas ratio in pediatric renal tumors. - Rat Genome Database

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The survivin:fas ratio in pediatric renal tumors.

Authors: Takamizawa, S  Scott, D  Wen, J  Grundy, P  Bishop, W  Kimura, K  Sandler, A 
Citation: Takamizawa S, etal., J Pediatr Surg. 2001 Jan;36(1):37-42.
RGD ID: 2293109
Pubmed: PMID:11150435   (View Abstract at PubMed)
DOI: DOI:10.1053/jpsu.2001.20000   (Journal Full-text)

BACKGROUND/PURPOSE: Apoptosis factors inducing or preventing cell death may govern the behavior of certain tumors. Fas is a pro-apoptotic receptor that induces cell death when bound by its ligand and is expressed at greater levels in pediatric renal tumors of good prognosis. Survivin is a novel inhibitor of apoptosis that is expressed in a cell cycle-dependent manner and is abundantly expressed in several tumors of unfavorable histology. This study evaluates the expression of survivin, as well as the prognostic value of the survivin:fas ratio in various types and stages of pediatric renal tumors. METHODS: Multiple apoptosis mRNA species were quantified by Rnase protection assay (RPA) in 32 pediatric renal tumors and adjacent normal kidney specimens before chemotherapy: Wilms' tumor (WT), n = 9; clear cell sarcoma (CCS), n = 4; rhabdoid tumor of the kidney (RTK), n = 5; mesoblastic nephroma (MN), n = 3 and normal kidney, n = 11. Western Blot and immunocytochemistry were used to confirm survivin protein expression in a selective specimen survey. Follow-up data were obtained on patient outcomes, and antiapoptotic to proapoptotic ratios were calculated and correlated with clinical recurrence of disease. RESULTS: Pediatric renal tumors express greater levels of both pro- and antiapoptotic factors than normal kidney. Survivin and fas appeared to be expressed differentially in the tumor specimens sampled. Five of 10 (50%) tumors that went on to recur expressed survivin, whereas survivin was present in only 2 of 11 (18%) nonrecurrent tumors. Conversely, only 2 of 10 (20%) tumors that recurred were fas positive, whereas 5 of 11 (45%) tumors that did not recur expressed fas. The mean survivin:fas ratio was significantly greater in the 10 tumors that went on to recur after treatment (4 RTK, 3 CCS, 3 WT), than in tumors not recurring (2.16+/-1.4 v 1.0+/-1.07; P =.01, Kruskal-Wallis test). The positive predictive value of tumor recurrence was 85.7% (CI: 42.1%, 99.6%) and the negative predictive value was 71.4% (CI: 41.9%, 91.6%) when a cutoff ratio of 1.6 was considered. CONCLUSIONS: The survivin:fas mRNA ratio is of prognostic value in its ability to predict recurrent disease in children undergoing treatment for pediatric renal tumors. In this series, a ratio of greater than 1.6 predicted recurrent disease with a high probability irrespective of clinical stage or pathologic type. Determining the survivin:fas ratio may guide treatment, follow-up and counseling of patients with pediatric renal tumors.

RGD Manual Disease Annotations    Click to see Annotation Detail View
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
Kidney Neoplasms disease_progressionIEP 2293109mRNA and protein:increased expression:kidneyRGD 
Kidney Neoplasms disease_progressionISOBIRC5 (Homo sapiens)2293109; 2293109mRNA and protein:increased expression:kidneyRGD 

Objects Annotated

Genes (Rattus norvegicus)
Birc5  (baculoviral IAP repeat-containing 5)

Genes (Mus musculus)
Birc5  (baculoviral IAP repeat-containing 5)

Genes (Homo sapiens)
BIRC5  (baculoviral IAP repeat containing 5)


Additional Information