Phosphorylated protein phosphatase 2A determines poor outcome in patients with metastatic colorectal cancer

Background: Protein phosphatase 2A (PP2A) is a tumour suppressor frequently inactivated in human cancer and its tyrosine-307 phosphorylation has been reported as a molecular inhibitory mechanism. Methods: Expression of phosphorylated PP2A (p-PP2A) was evaluated in 250 metastatic colorectal cancer (C...

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Veröffentlicht in:British journal of cancer 2014-08, Vol.111 (4), p.756-762
Hauptverfasser: Cristóbal, I, Manso, R, Rincón, R, Caramés, C, Zazo, S, del Pulgar, T G, Cebrián, A, Madoz-Gúrpide, J, Rojo, F, García-Foncillas, J
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container_issue 4
container_start_page 756
container_title British journal of cancer
container_volume 111
creator Cristóbal, I
Manso, R
Rincón, R
Caramés, C
Zazo, S
del Pulgar, T G
Cebrián, A
Madoz-Gúrpide, J
Rojo, F
García-Foncillas, J
description Background: Protein phosphatase 2A (PP2A) is a tumour suppressor frequently inactivated in human cancer and its tyrosine-307 phosphorylation has been reported as a molecular inhibitory mechanism. Methods: Expression of phosphorylated PP2A (p-PP2A) was evaluated in 250 metastatic colorectal cancer (CRC) patients. Chi-square, Kaplan–Meier and Cox analyses were used to determine correlations with clinical and molecular parameters and impact on clinical outcomes. Results: High p-PP2A levels were found in 17.2% cases and were associated with ECOG performance status ( P =0.001) and presence of synchronous metastasis at diagnosis ( P =0.035). This subgroup showed substantially worse overall survival (OS) (median OS, 6.0 vs 26.2 months, P
doi_str_mv 10.1038/bjc.2014.376
format Article
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Methods: Expression of phosphorylated PP2A (p-PP2A) was evaluated in 250 metastatic colorectal cancer (CRC) patients. Chi-square, Kaplan–Meier and Cox analyses were used to determine correlations with clinical and molecular parameters and impact on clinical outcomes. Results: High p-PP2A levels were found in 17.2% cases and were associated with ECOG performance status ( P =0.001) and presence of synchronous metastasis at diagnosis ( P =0.035). This subgroup showed substantially worse overall survival (OS) (median OS, 6.0 vs 26.2 months, P <0.001) and progression-free survival (PFS) (median PFS, 3.8 vs 13.3 months, P <0.001). The prognostic impact of p-PP2A was particularly evident in patients aged <70 years ( P <0.001). Multivariate analysis revealed that p-PP2A retained its prognostic impact for OS (hazard ratio 2.7; 95% confidence interval, 1.8–4.1; P <0.001) and PFS (hazard ratio 3.0; 95% confidence interval, 1.8–5.0; P <0.001). Conclusions: Phosphorylated PP2A is an alteration that determines poor outcome in metastatic CRC and represents a novel potential therapeutic target in this disease, thus enabling to define a subgroup of patients who could benefit from future treatments based on PP2A activators.]]></description><identifier>ISSN: 0007-0920</identifier><identifier>EISSN: 1532-1827</identifier><identifier>DOI: 10.1038/bjc.2014.376</identifier><identifier>PMID: 25003662</identifier><identifier>CODEN: BJCAAI</identifier><language>eng</language><publisher>London: Nature Publishing Group UK</publisher><subject>692/53/2422 ; 692/699/67/1504/1885 ; 692/699/67/322 ; Aged ; Alzheimer's disease ; Biological and medical sciences ; Biomarkers, Tumor - metabolism ; Biomedical and Life Sciences ; Biomedicine ; Cancer Research ; Colorectal cancer ; Colorectal Neoplasms - enzymology ; Colorectal Neoplasms - mortality ; Colorectal Neoplasms - pathology ; Confidence intervals ; Drug Resistance ; Epidemiology ; Female ; Gastroenterology. Liver. Pancreas. Abdomen ; Humans ; Kaplan-Meier Estimate ; Kinases ; Liver Neoplasms - enzymology ; Liver Neoplasms - mortality ; Liver Neoplasms - secondary ; Male ; Medical prognosis ; Medical sciences ; Metastasis ; Molecular Diagnostics ; Molecular Medicine ; Multiple tumors. Solid tumors. Tumors in childhood (general aspects) ; Multivariate Analysis ; Oncology ; Phosphatase ; Phosphoprotein Phosphatases - metabolism ; Phosphoproteins - metabolism ; Phosphorylation ; Proportional Hazards Models ; Protein Phosphatase 2C ; Protein Processing, Post-Translational ; Proteins ; Stomach. Duodenum. Small intestine. Colon. Rectum. Anus ; Tumors</subject><ispartof>British journal of cancer, 2014-08, Vol.111 (4), p.756-762</ispartof><rights>The Author(s) 2014</rights><rights>2015 INIST-CNRS</rights><rights>Copyright Nature Publishing Group Aug 12, 2014</rights><rights>Copyright © 2014 Cancer Research UK 2014 Cancer Research UK</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c550t-6f2f975739e8f34c1c4d1767558e7cd42fa7268a214f084342e598d17fd5665e3</citedby><cites>FETCH-LOGICAL-c550t-6f2f975739e8f34c1c4d1767558e7cd42fa7268a214f084342e598d17fd5665e3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC4134505/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC4134505/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,727,780,784,885,27924,27925,53791,53793</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&amp;idt=28722060$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/25003662$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Cristóbal, I</creatorcontrib><creatorcontrib>Manso, R</creatorcontrib><creatorcontrib>Rincón, R</creatorcontrib><creatorcontrib>Caramés, C</creatorcontrib><creatorcontrib>Zazo, S</creatorcontrib><creatorcontrib>del Pulgar, T G</creatorcontrib><creatorcontrib>Cebrián, A</creatorcontrib><creatorcontrib>Madoz-Gúrpide, J</creatorcontrib><creatorcontrib>Rojo, F</creatorcontrib><creatorcontrib>García-Foncillas, J</creatorcontrib><title>Phosphorylated protein phosphatase 2A determines poor outcome in patients with metastatic colorectal cancer</title><title>British journal of cancer</title><addtitle>Br J Cancer</addtitle><addtitle>Br J Cancer</addtitle><description><![CDATA[Background: Protein phosphatase 2A (PP2A) is a tumour suppressor frequently inactivated in human cancer and its tyrosine-307 phosphorylation has been reported as a molecular inhibitory mechanism. Methods: Expression of phosphorylated PP2A (p-PP2A) was evaluated in 250 metastatic colorectal cancer (CRC) patients. Chi-square, Kaplan–Meier and Cox analyses were used to determine correlations with clinical and molecular parameters and impact on clinical outcomes. Results: High p-PP2A levels were found in 17.2% cases and were associated with ECOG performance status ( P =0.001) and presence of synchronous metastasis at diagnosis ( P =0.035). This subgroup showed substantially worse overall survival (OS) (median OS, 6.0 vs 26.2 months, P <0.001) and progression-free survival (PFS) (median PFS, 3.8 vs 13.3 months, P <0.001). The prognostic impact of p-PP2A was particularly evident in patients aged <70 years ( P <0.001). Multivariate analysis revealed that p-PP2A retained its prognostic impact for OS (hazard ratio 2.7; 95% confidence interval, 1.8–4.1; P <0.001) and PFS (hazard ratio 3.0; 95% confidence interval, 1.8–5.0; P <0.001). Conclusions: Phosphorylated PP2A is an alteration that determines poor outcome in metastatic CRC and represents a novel potential therapeutic target in this disease, thus enabling to define a subgroup of patients who could benefit from future treatments based on PP2A activators.]]></description><subject>692/53/2422</subject><subject>692/699/67/1504/1885</subject><subject>692/699/67/322</subject><subject>Aged</subject><subject>Alzheimer's disease</subject><subject>Biological and medical sciences</subject><subject>Biomarkers, Tumor - metabolism</subject><subject>Biomedical and Life Sciences</subject><subject>Biomedicine</subject><subject>Cancer Research</subject><subject>Colorectal cancer</subject><subject>Colorectal Neoplasms - enzymology</subject><subject>Colorectal Neoplasms - mortality</subject><subject>Colorectal Neoplasms - pathology</subject><subject>Confidence intervals</subject><subject>Drug Resistance</subject><subject>Epidemiology</subject><subject>Female</subject><subject>Gastroenterology. Liver. Pancreas. Abdomen</subject><subject>Humans</subject><subject>Kaplan-Meier Estimate</subject><subject>Kinases</subject><subject>Liver Neoplasms - enzymology</subject><subject>Liver Neoplasms - mortality</subject><subject>Liver Neoplasms - secondary</subject><subject>Male</subject><subject>Medical prognosis</subject><subject>Medical sciences</subject><subject>Metastasis</subject><subject>Molecular Diagnostics</subject><subject>Molecular Medicine</subject><subject>Multiple tumors. Solid tumors. Tumors in childhood (general aspects)</subject><subject>Multivariate Analysis</subject><subject>Oncology</subject><subject>Phosphatase</subject><subject>Phosphoprotein Phosphatases - metabolism</subject><subject>Phosphoproteins - metabolism</subject><subject>Phosphorylation</subject><subject>Proportional Hazards Models</subject><subject>Protein Phosphatase 2C</subject><subject>Protein Processing, Post-Translational</subject><subject>Proteins</subject><subject>Stomach. Duodenum. 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Methods: Expression of phosphorylated PP2A (p-PP2A) was evaluated in 250 metastatic colorectal cancer (CRC) patients. Chi-square, Kaplan–Meier and Cox analyses were used to determine correlations with clinical and molecular parameters and impact on clinical outcomes. Results: High p-PP2A levels were found in 17.2% cases and were associated with ECOG performance status ( P =0.001) and presence of synchronous metastasis at diagnosis ( P =0.035). This subgroup showed substantially worse overall survival (OS) (median OS, 6.0 vs 26.2 months, P <0.001) and progression-free survival (PFS) (median PFS, 3.8 vs 13.3 months, P <0.001). The prognostic impact of p-PP2A was particularly evident in patients aged <70 years ( P <0.001). Multivariate analysis revealed that p-PP2A retained its prognostic impact for OS (hazard ratio 2.7; 95% confidence interval, 1.8–4.1; P <0.001) and PFS (hazard ratio 3.0; 95% confidence interval, 1.8–5.0; P <0.001). Conclusions: Phosphorylated PP2A is an alteration that determines poor outcome in metastatic CRC and represents a novel potential therapeutic target in this disease, thus enabling to define a subgroup of patients who could benefit from future treatments based on PP2A activators.]]></abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><pmid>25003662</pmid><doi>10.1038/bjc.2014.376</doi><tpages>7</tpages><oa>free_for_read</oa></addata></record>
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subjects 692/53/2422
692/699/67/1504/1885
692/699/67/322
Aged
Alzheimer's disease
Biological and medical sciences
Biomarkers, Tumor - metabolism
Biomedical and Life Sciences
Biomedicine
Cancer Research
Colorectal cancer
Colorectal Neoplasms - enzymology
Colorectal Neoplasms - mortality
Colorectal Neoplasms - pathology
Confidence intervals
Drug Resistance
Epidemiology
Female
Gastroenterology. Liver. Pancreas. Abdomen
Humans
Kaplan-Meier Estimate
Kinases
Liver Neoplasms - enzymology
Liver Neoplasms - mortality
Liver Neoplasms - secondary
Male
Medical prognosis
Medical sciences
Metastasis
Molecular Diagnostics
Molecular Medicine
Multiple tumors. Solid tumors. Tumors in childhood (general aspects)
Multivariate Analysis
Oncology
Phosphatase
Phosphoprotein Phosphatases - metabolism
Phosphoproteins - metabolism
Phosphorylation
Proportional Hazards Models
Protein Phosphatase 2C
Protein Processing, Post-Translational
Proteins
Stomach. Duodenum. Small intestine. Colon. Rectum. Anus
Tumors
title Phosphorylated protein phosphatase 2A determines poor outcome in patients with metastatic colorectal cancer
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