RGD Reference Report - Tissue microarray analysis of hMSH2 expression predicts outcome in men with prostate cancer. - Rat Genome Database

Send us a Message



Submit Data |  Help |  Video Tutorials |  News |  Publications |  Download |  REST API |  Citing RGD |  Contact   

Tissue microarray analysis of hMSH2 expression predicts outcome in men with prostate cancer.

Authors: Prtilo, A  Leach, FS  Markwalder, R  Kappeler, A  Burkhard, FC  Cecchini, MG  Studer, UE  Thalmann, GN 
Citation: Prtilo A, etal., J Urol. 2005 Nov;174(5):1814-8; discussion 1818.
RGD ID: 2293513
Pubmed: PMID:16217293   (View Abstract at PubMed)
DOI: DOI:10.1097/01.ju.0000176796.47988.64   (Journal Full-text)

PURPOSE: Mismatch repair genes are responsible for the coordinated correction of misincorporated nucleotides formed during DNA replication. Mismatch repair expression is altered in a subset of prostate cancers (PCs) and a recent study suggested that time to biochemical recurrence following prostatectomy correlated with the degree of hMSH2 immunohistochemical staining. We compared hMSH2 expression and survival in clinically organ confined PC. MATERIALS AND METHODS: A prostate tissue microarray was constructed using 243 specimens from patients who underwent radical prostatectomy with extended lymph node dissection for clinically organ confined PC with up to 12 years of followup. Immunohistochemistry was performed with anti-human MSH2 monoclonal antibody. Three independent observers evaluated hMSH2 expression on a scale of 0 to 4. Low expression was defined as a score of less than 2 and high expression was defined as a score of 2 or higher. Statistical analysis used the Fisher exact test, and Goodman and Kruskal gamma coefficient. RESULTS: Higher Gleason score significantly correlated with higher hMSH2 expression (p < 0.0002). Low hMSH2 expression correlated with increased overall, disease-free and biochemical disease-free survival (all p < 0.01). Analysis comparing low vs high hMSH2 expression was significant with respect to overall (p = 0.0004), disease-free (p = 0.005) and biochemical disease-free (p = 0.0177) survival. CONCLUSIONS: hMSH2 is differentially expressed in malignant prostate tissue and hMSH2 immunohistochemical staining intensity correlates with Gleason score, overall and disease-free survival. Taken together our results suggest that hMSH2 expression may be a useful prognostic biomarker for outcome in men with clinically organ confined PC.

RGD Manual Disease Annotations    Click to see Annotation Detail View
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
prostate cancer disease_progressionIEP 2293513 RGD 
prostate cancer disease_progressionISOMSH2 (Homo sapiens)2293513; 2293513 RGD 

Objects Annotated

Genes (Rattus norvegicus)
Msh2  (mutS homolog 2)

Genes (Mus musculus)
Msh2  (mutS homolog 2)

Genes (Homo sapiens)
MSH2  (mutS homolog 2)


Additional Information