ALK gene amplification is associated with poor prognosis in colorectal carcinoma

Background: Recently, the anaplastic lymphoma kinase (ALK) has been found to be altered in several solid and haematological tumours. ALK gene copy number changes and mutations in colorectal cancers (CRCs) are not well characterised. We aimed to study the prevalence of ALK copy number changes, transl...

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Veröffentlicht in:British journal of cancer 2013-11, Vol.109 (10), p.2735-2743
Hauptverfasser: Bavi, P, Jehan, Z, Bu, R, Prabhakaran, S, Al-Sanea, N, Al-Dayel, F, Al-Assiri, M, Al-Halouly, T, Sairafi, R, Uddin, S, Al-Kuraya, K S
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container_end_page 2743
container_issue 10
container_start_page 2735
container_title British journal of cancer
container_volume 109
creator Bavi, P
Jehan, Z
Bu, R
Prabhakaran, S
Al-Sanea, N
Al-Dayel, F
Al-Assiri, M
Al-Halouly, T
Sairafi, R
Uddin, S
Al-Kuraya, K S
description Background: Recently, the anaplastic lymphoma kinase (ALK) has been found to be altered in several solid and haematological tumours. ALK gene copy number changes and mutations in colorectal cancers (CRCs) are not well characterised. We aimed to study the prevalence of ALK copy number changes, translocations, gene mutations and protein expression in 770 CRC patients, and correlate these findings with molecular and clinico-pathological data. Methods: ALK gene copy number variations and ALK expression were evaluated by fluorescence in situ hybridisation (FISH) and immunohistochemistry, respectively. Results: Translocations of the ALK gene were not observed; 3.4% (26 out of 756) of the CRC patients tested had an increase in ALK gene copy number either amplification or gain. Interestingly, increased ALK gene copy number alteration was associated with poor prognosis ( P =0.0135) and was an independent prognostic marker in multivariate Cox proportional hazards model. The study reveals a significant impact of ALK gene copy number alterations on the outcome of patients with CRC. Conclusion: The findings of our study highlight a potential role of targeting ALK in advanced CRCs by using ALK FISH and ALK IHC as a screening tool to detect ALK alterations. Based on these findings, a potential role of ALK inhibitor as a therapeutic agent in a subset of CRC merits further investigation.
doi_str_mv 10.1038/bjc.2013.641
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ALK gene copy number changes and mutations in colorectal cancers (CRCs) are not well characterised. We aimed to study the prevalence of ALK copy number changes, translocations, gene mutations and protein expression in 770 CRC patients, and correlate these findings with molecular and clinico-pathological data. Methods: ALK gene copy number variations and ALK expression were evaluated by fluorescence in situ hybridisation (FISH) and immunohistochemistry, respectively. Results: Translocations of the ALK gene were not observed; 3.4% (26 out of 756) of the CRC patients tested had an increase in ALK gene copy number either amplification or gain. Interestingly, increased ALK gene copy number alteration was associated with poor prognosis ( P =0.0135) and was an independent prognostic marker in multivariate Cox proportional hazards model. The study reveals a significant impact of ALK gene copy number alterations on the outcome of patients with CRC. Conclusion: The findings of our study highlight a potential role of targeting ALK in advanced CRCs by using ALK FISH and ALK IHC as a screening tool to detect ALK alterations. Based on these findings, a potential role of ALK inhibitor as a therapeutic agent in a subset of CRC merits further investigation.</description><identifier>ISSN: 0007-0920</identifier><identifier>EISSN: 1532-1827</identifier><identifier>DOI: 10.1038/bjc.2013.641</identifier><identifier>PMID: 24129244</identifier><identifier>CODEN: BJCAAI</identifier><language>eng</language><publisher>London: Nature Publishing Group UK</publisher><subject>692/699/67/1504/1885 ; 692/700/1750 ; Aged ; Biological and medical sciences ; Biomarkers, Tumor - genetics ; Biomarkers, Tumor - metabolism ; Biomedical and Life Sciences ; Biomedicine ; Cancer Research ; Cancer therapies ; Chemotherapy ; Cohort Studies ; Colorectal cancer ; Colorectal Neoplasms - diagnosis ; Colorectal Neoplasms - genetics ; Colorectal Neoplasms - mortality ; Drug Resistance ; Epidemiology ; Female ; Gastroenterology. Liver. Pancreas. Abdomen ; Gene Amplification ; Gene Dosage ; Gene Expression Regulation, Neoplastic ; Genetics and Genomics ; Humans ; Immunohistochemistry ; In Situ Hybridization, Fluorescence ; Kinases ; Lymphoma ; Male ; Medical prognosis ; Medical research ; Medical sciences ; Middle Aged ; Molecular Medicine ; Multiple tumors. Solid tumors. Tumors in childhood (general aspects) ; Mutation ; Oncology ; Pathology ; Prognosis ; Receptor Protein-Tyrosine Kinases - genetics ; Research centers ; Stomach. Duodenum. Small intestine. Colon. Rectum. Anus ; Surgery ; Survival analysis ; Tissue Array Analysis ; Tumors</subject><ispartof>British journal of cancer, 2013-11, Vol.109 (10), p.2735-2743</ispartof><rights>The Author(s) 2013</rights><rights>2015 INIST-CNRS</rights><rights>Copyright Nature Publishing Group Nov 12, 2013</rights><rights>Copyright © 2013 Cancer Research UK 2013 Cancer Research UK</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c513t-8f77a55bd41575e23007e51f653304a7ea1d76ae0d619a8ba8db385b2b3562083</citedby><cites>FETCH-LOGICAL-c513t-8f77a55bd41575e23007e51f653304a7ea1d76ae0d619a8ba8db385b2b3562083</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/PMC3833224/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC3833224/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,723,776,780,881,27901,27902,41464,42533,51294,53766,53768</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&amp;idt=27952720$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/24129244$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Bavi, P</creatorcontrib><creatorcontrib>Jehan, Z</creatorcontrib><creatorcontrib>Bu, R</creatorcontrib><creatorcontrib>Prabhakaran, S</creatorcontrib><creatorcontrib>Al-Sanea, N</creatorcontrib><creatorcontrib>Al-Dayel, F</creatorcontrib><creatorcontrib>Al-Assiri, M</creatorcontrib><creatorcontrib>Al-Halouly, T</creatorcontrib><creatorcontrib>Sairafi, R</creatorcontrib><creatorcontrib>Uddin, S</creatorcontrib><creatorcontrib>Al-Kuraya, K S</creatorcontrib><title>ALK gene amplification is associated with poor prognosis in colorectal carcinoma</title><title>British journal of cancer</title><addtitle>Br J Cancer</addtitle><addtitle>Br J Cancer</addtitle><description>Background: Recently, the anaplastic lymphoma kinase (ALK) has been found to be altered in several solid and haematological tumours. ALK gene copy number changes and mutations in colorectal cancers (CRCs) are not well characterised. We aimed to study the prevalence of ALK copy number changes, translocations, gene mutations and protein expression in 770 CRC patients, and correlate these findings with molecular and clinico-pathological data. Methods: ALK gene copy number variations and ALK expression were evaluated by fluorescence in situ hybridisation (FISH) and immunohistochemistry, respectively. Results: Translocations of the ALK gene were not observed; 3.4% (26 out of 756) of the CRC patients tested had an increase in ALK gene copy number either amplification or gain. Interestingly, increased ALK gene copy number alteration was associated with poor prognosis ( P =0.0135) and was an independent prognostic marker in multivariate Cox proportional hazards model. The study reveals a significant impact of ALK gene copy number alterations on the outcome of patients with CRC. Conclusion: The findings of our study highlight a potential role of targeting ALK in advanced CRCs by using ALK FISH and ALK IHC as a screening tool to detect ALK alterations. Based on these findings, a potential role of ALK inhibitor as a therapeutic agent in a subset of CRC merits further investigation.</description><subject>692/699/67/1504/1885</subject><subject>692/700/1750</subject><subject>Aged</subject><subject>Biological and medical sciences</subject><subject>Biomarkers, Tumor - genetics</subject><subject>Biomarkers, Tumor - metabolism</subject><subject>Biomedical and Life Sciences</subject><subject>Biomedicine</subject><subject>Cancer Research</subject><subject>Cancer therapies</subject><subject>Chemotherapy</subject><subject>Cohort Studies</subject><subject>Colorectal cancer</subject><subject>Colorectal Neoplasms - diagnosis</subject><subject>Colorectal Neoplasms - genetics</subject><subject>Colorectal Neoplasms - mortality</subject><subject>Drug Resistance</subject><subject>Epidemiology</subject><subject>Female</subject><subject>Gastroenterology. Liver. Pancreas. Abdomen</subject><subject>Gene Amplification</subject><subject>Gene Dosage</subject><subject>Gene Expression Regulation, Neoplastic</subject><subject>Genetics and Genomics</subject><subject>Humans</subject><subject>Immunohistochemistry</subject><subject>In Situ Hybridization, Fluorescence</subject><subject>Kinases</subject><subject>Lymphoma</subject><subject>Male</subject><subject>Medical prognosis</subject><subject>Medical research</subject><subject>Medical sciences</subject><subject>Middle Aged</subject><subject>Molecular Medicine</subject><subject>Multiple tumors. Solid tumors. Tumors in childhood (general aspects)</subject><subject>Mutation</subject><subject>Oncology</subject><subject>Pathology</subject><subject>Prognosis</subject><subject>Receptor Protein-Tyrosine Kinases - genetics</subject><subject>Research centers</subject><subject>Stomach. Duodenum. Small intestine. Colon. Rectum. 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ALK gene copy number changes and mutations in colorectal cancers (CRCs) are not well characterised. We aimed to study the prevalence of ALK copy number changes, translocations, gene mutations and protein expression in 770 CRC patients, and correlate these findings with molecular and clinico-pathological data. Methods: ALK gene copy number variations and ALK expression were evaluated by fluorescence in situ hybridisation (FISH) and immunohistochemistry, respectively. Results: Translocations of the ALK gene were not observed; 3.4% (26 out of 756) of the CRC patients tested had an increase in ALK gene copy number either amplification or gain. Interestingly, increased ALK gene copy number alteration was associated with poor prognosis ( P =0.0135) and was an independent prognostic marker in multivariate Cox proportional hazards model. The study reveals a significant impact of ALK gene copy number alterations on the outcome of patients with CRC. Conclusion: The findings of our study highlight a potential role of targeting ALK in advanced CRCs by using ALK FISH and ALK IHC as a screening tool to detect ALK alterations. Based on these findings, a potential role of ALK inhibitor as a therapeutic agent in a subset of CRC merits further investigation.</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><pmid>24129244</pmid><doi>10.1038/bjc.2013.641</doi><tpages>9</tpages><oa>free_for_read</oa></addata></record>
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subjects 692/699/67/1504/1885
692/700/1750
Aged
Biological and medical sciences
Biomarkers, Tumor - genetics
Biomarkers, Tumor - metabolism
Biomedical and Life Sciences
Biomedicine
Cancer Research
Cancer therapies
Chemotherapy
Cohort Studies
Colorectal cancer
Colorectal Neoplasms - diagnosis
Colorectal Neoplasms - genetics
Colorectal Neoplasms - mortality
Drug Resistance
Epidemiology
Female
Gastroenterology. Liver. Pancreas. Abdomen
Gene Amplification
Gene Dosage
Gene Expression Regulation, Neoplastic
Genetics and Genomics
Humans
Immunohistochemistry
In Situ Hybridization, Fluorescence
Kinases
Lymphoma
Male
Medical prognosis
Medical research
Medical sciences
Middle Aged
Molecular Medicine
Multiple tumors. Solid tumors. Tumors in childhood (general aspects)
Mutation
Oncology
Pathology
Prognosis
Receptor Protein-Tyrosine Kinases - genetics
Research centers
Stomach. Duodenum. Small intestine. Colon. Rectum. Anus
Surgery
Survival analysis
Tissue Array Analysis
Tumors
title ALK gene amplification is associated with poor prognosis in colorectal carcinoma
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