RGD Reference Report - The prognostic value of p73 overexpression in colorectal carcinoma: a clinicopathologic, immunohistochemical, and statistical study of 204 patients. - Rat Genome Database

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The prognostic value of p73 overexpression in colorectal carcinoma: a clinicopathologic, immunohistochemical, and statistical study of 204 patients.

Authors: Toumi, Amira Arfaoui  El Hadj, Olfa El Amine  Ben Mahmoud, Lilia Kriaa  Ben Hmida, Abd El Majid  Chaar, Ines  Gharbi, Lasaad  Mzabi, Sabeh  Bouraoui, Saadia 
Citation: Toumi AA, etal., Appl Immunohistochem Mol Morphol. 2010 Mar;18(2):128-36. doi: 10.1097/PAI.0b013e3181bcb2da.
RGD ID: 151347585
Pubmed: PMID:19956069   (View Abstract at PubMed)
DOI: DOI:10.1097/PAI.0b013e3181bcb2da   (Journal Full-text)


INTRODUCTION: The protein p73 is the first identified homolog of the tumor suppressor gene p53, but its function in tumor development has not been established. Indeed, the results regarding the p73 implication in colorectal cancers is still controversial.
AIM: We investigated whether the p73 is implicated in colorectal cancer, whether the p73 expression is related to prognosis and whether the p73 expression is correlated with p21-ras or p53.
MATERIALS AND METHODS: We performed a comparative immunohistochemical analysis of p73, p53, and p21ras proteins in primary colorectal tumor with matched normal mucosa and metastasis from 204 patients with colorectal cancer. We correlated these expressions with clinicopathologic variables and we compared the different profiles between nonmucinous carcinoma and mucinous carcinoma.
RESULTS: In this study, we did not find any correlation between p73 expression, sex, age, site, differentiation and stage. Overexpression of p73 was significantly correlated with infiltrating growth pattern (P<0.0001) and nonmucinous carcinoma (P<0.0001). Furthermore, frequency and intensity of p73 expression were marquedly increased from normal mucosa (26%), to primary tumors (75%) and to metastasis (97%). Furthermore, expression of p73 was also correlated with shorter survival period. The prognostic significance of p73 expression remained, even after adjustment for the clinical and pathologic variables. The p73 expression was positively correlated only with p21ras expression (P<0.0001).
CONCLUSIONS: All these findings prove that p73 expression should be considered as a valuable poor prognostic marker. Our data also suggest that TP73 gene may play a role in colorectal carcinoma development.



RGD Manual Disease Annotations    Click to see Annotation Detail View
Object SymbolSpeciesTermQualifierEvidenceWithNotesSourceOriginal Reference(s)
TP73Humancolorectal adenocarcinoma exacerbatesIEP protein:increased expression:colon (human)RGD 
Tp73Ratcolorectal adenocarcinoma exacerbatesISOTP73 (Homo sapiens)protein:increased expression:colon (human)RGD 
Trp73Mousecolorectal adenocarcinoma exacerbatesISOTP73 (Homo sapiens)protein:increased expression:colon (human)RGD 

Objects Annotated

Genes (Rattus norvegicus)
Tp73  (tumor protein p73)

Genes (Mus musculus)
Trp73  (transformation related protein 73)

Genes (Homo sapiens)
TP73  (tumor protein p73)


Additional Information