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Musselwhite LW, May FP, Salem ME, Mitchell EP. Colorectal Cancer: In the Pursuit of Health Equity. Am Soc Clin Oncol Educ Book 2021; 41:108-117. [PMID: 34010044 DOI: 10.1200/edbk_321071] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Colorectal cancer mortality has decreased considerably following the adoption of national screening programs, yet, within at-risk subgroups, there continue to be measurable differences in clinical outcomes from variations in screening, receipt of chemotherapy, radiation or surgery, access to clinical trials, research participation, and survivorship. These disparities are well-described and some have worsened over time. Disparities identified have included race and ethnicity, age (specifically young adults), socioeconomic status, insurance access, geography, and environmental exposures. In the context of the COVID-19 pandemic, colorectal cancer care has necessarily shifted dramatically, with broad, immediate uptake of telemedicine, transition to oral medications when feasible, and considerations for sequence of treatment. However, it has additionally marginalized patients with colorectal cancer with historically disparate cancer-specific outcomes; among them, uninsured, low-income, immigrant, and ethnic-minority patients-all of whom are more likely to become infected, be hospitalized, and die of either COVID-19 or colorectal cancer. Herein, we outline measurable disparities, review implemented solutions, and define strategies toward ensuring that all have a fair and just opportunity to be as healthy as possible.
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Affiliation(s)
- Laura W Musselwhite
- Department of Solid Tumor Oncology, Levine Cancer Institute, Atrium Health, Charlotte, NC
| | - Folasade P May
- Vatche and Tamar Manoukian Division of Digestive Diseases, UCLA-Kaiser Permanente Center for Health Equity, and Jonsson Comprehensive Cancer Center, David Geffen School of Medicine, University of California, Los Angeles, CA
- Division of Gastroenterology, Department of Medicine, Veterans Affairs Greater Los Angeles Healthcare System, Los Angeles, CA
| | - Mohamed E Salem
- Department of Solid Tumor Oncology, Levine Cancer Institute, Atrium Health, Charlotte, NC
| | - Edith P Mitchell
- Center to Eliminate Cancer Disparities, Sidney Kimmel Cancer Center at Jefferson, Philadelphia, PA
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Ayad EE, eldin YOK, El-hindawi AA, Abdelmagid MS, Elmeligy HA. Immunohistochemical Study of Ezrin Expression in Colorectal Carcinoma: A Comparative Study between Objective Method and Digital Quantitative Assessment. Asian Pac J Cancer Prev 2020; 21:967-974. [PMID: 32334457 PMCID: PMC7445977 DOI: 10.31557/apjcp.2020.21.4.967] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Accepted: 03/28/2020] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Colorectal cancer is one of the leading causes of cancer death in both developed and developing nations. It is the third most common type of cancer and the fourth leading cause of cancer-related deaths worldwide. Ezrin is involved in maintaining cell structure and cell motility. Expression levels of the ezrin gene correlate with numerous human malignancies. MATERIAL AND METHODS Ezrin expression was evaluated in fifty one cases of colorectal carcinoma by using two methods; objective and quantitative method to determine the statistical relation between ezrin objective analysis score and clinicopathological parameters and to do a comparative study between both methods of analysis. RESULTS Ezrin was expressed in 92.2% of cases, and it showed a statistical significant relation with tumor grade. A statistically significant relation was found between ezrin objective analysis score and ezrin quantitative analysis score (P-value <0.05). A strong positive Pearson correlation exists between both methods of analysis (R=0.868). CONCLUSION Ezrin has a role in colorectal cancer progression and it might provide clinically valuable information in predicting the behavior of colorectal cancer. Digital pathology offers the potential for improvements in quality, efficacy and safety. It will be necessary to carry out similar studies on a larger sample size in order to elucidate the possible prognostic significance of ezrin in colorectal carcinoma and ensure the ability of digital pathology to transform the practice of diagnostic pathology. .
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Affiliation(s)
- Essam E Ayad
- Department of Pathology, Faculty of Medicine, Cairo University, Cairo,
| | | | - Ali A El-hindawi
- Department of Pathology, Faculty of Medicine, Cairo University, Cairo,
| | - Mona S Abdelmagid
- Department of Pathology, Faculty of Medicine, Cairo University, Cairo,
| | - Hesham A Elmeligy
- Department of General Surgery, Theodor Bilharz Research Institute, Giza, Egypt.
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Gado A, Ebeid B, Abdelmohsen A, Axon A. Colorectal cancer in Egypt is commoner in young people: Is this cause for alarm? ALEXANDRIA JOURNAL OF MEDICINE 2019. [DOI: 10.1016/j.ajme.2013.03.003] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Affiliation(s)
- Ahmed Gado
- Department of Medicine, Bolak Eldakror Hospital, Giza, Egypt
| | - Basel Ebeid
- Department of Tropical Medicine and Infectious Diseases, Banysweef University, Banysweef, Egypt
| | - Aida Abdelmohsen
- Department of Community Medicine, National Research Center, Giza, Egypt
| | - Anthony Axon
- Department of Gastroenterology, The General Infirmary at Leeds, Leeds, United Kingdom
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Rasouli MA, Moradi G, Roshani D, Nikkhoo B, Ghaderi E, Ghaytasi B. Prognostic factors and survival of colorectal cancer in Kurdistan province, Iran: A population-based study (2009-2014). Medicine (Baltimore) 2017; 96:e5941. [PMID: 28178134 PMCID: PMC5312991 DOI: 10.1097/md.0000000000005941] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 12/19/2016] [Accepted: 12/27/2016] [Indexed: 01/05/2023] Open
Abstract
Colorectal cancer (CRC) survival varies at individual and geographically level. This population-based study aimed to evaluating various factors affecting the survival rate of CRC patients in Kurdistan province.In a retrospective cohort study, patients diagnosed as CRC were collected through a population-based study from March 1, 2009 to 2014. The data were collected from Kurdistan's Cancer Registry database. Additional information and missing data were collected reference to patients' homes, medical records, and pathology reports. The CRC survival was calculated from the date of diagnosis to the date of cancer-specific death or the end of follow-up (cutoff date: October 2015). Kaplan-Meier method and log-rank test were used for the univariate analysis of survival in various subgroups. The proportional-hazard model Cox was also used in order to consider the effects of different factors on survival including age at diagnosis, place of residence, marital status, occupation, level of education, smoking, economic status, comorbidity, tumor stage, and tumor grade.A total number of 335 patients affected by CRC were assessed and the results showed that 1- and 5-year survival rate were 87% and 33%, respectively. According to the results of Cox's multivariate analysis, the following factors were significantly related to CRC survival: age at diagnosis (≥65 years old) (HR 2.08, 95% CI: 1.17-3.71), single patients (HR 1.62, 95% CI: 1.10-2.40), job (worker) (HR 2.09, 95% CI: 1.22-3.58), educational level: diploma or below (HR 0.61, 95% CI: 0.39-0.92), wealthy economic status (HR 0.51, 95% CI: 0.31-0.82), tumor grade in poorly differentiated (HR 2.25, 95% CI: 1.37-3.69), and undifferentiated/anaplastic grade (HR 2.90, 95% CI: 1.67-4.98).We found that factors such as low education, inappropriate socioeconomic status, and high tumor grade at the time of disease diagnosis were effective in the poor survival of CRC patients in Kurdistan province; this, which need more attention.
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Affiliation(s)
- Mohammad Aziz Rasouli
- Student Research Committee
- Department of Epidemiology and Biostatistics, Faculty of Medicine
| | - Ghobad Moradi
- Social Determinants of Health Research Center
- Department of Epidemiology and Biostatistics, Faculty of Medicine
| | - Daem Roshani
- Social Determinants of Health Research Center
- Department of Epidemiology and Biostatistics, Faculty of Medicine
| | - Bahram Nikkhoo
- Department of Pathology, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Ebrahim Ghaderi
- Social Determinants of Health Research Center
- Department of Epidemiology and Biostatistics, Faculty of Medicine
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Taha MOA, Abdalla AAE, Mohamed RS. Pattern & presentation of colorectal cancer in central Sudan, a retrospective descriptive study, 2010-2012. Afr Health Sci 2015; 15:576-80. [PMID: 26124805 DOI: 10.4314/ahs.v15i2.33] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
AIMS & OBJECTIVE To determine the age and gender distribution and clinical presentation of patients together with histological types of colorectal cancer cases presented to Ibn Sina specialized hospital. PATIENTS AND METHODS This retrospective study was conducted in Ibn Sina Hospital (Sudan). Seventy three (73) patients of colorectal cancer who presented in the period from January 2010 to December 2012 were included. Data were collected from their hospital records and analyzed using SPSS computer program 17. RESULTS More than 17 % of the study populations was below the age of 40 years, and 43.84% was below 50 years. The male to female ratio was 1:1.02. Rectal bleeding is the commonest presenting symptom and well differentiated adenocarcinoma is the dominating tumor grade. 8.3 % of patients presented with liver metastasis. CONCLUSION Colorectal cancer in this study was found more in young age groups with a peak frequency at the fifth and sixth decades.
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Aryaie M, Roshandel G, Semnani S, Asadi-Lari M, Aarabi M, Vakili MA, Kazemnejhad V, Sedaghat SM, Solaymani-Dodaran M. Predictors of Colorectal Cancer Survival in Golestan, Iran: A Population-based Study. Epidemiol Health 2013; 35:e2013004. [PMID: 23807907 PMCID: PMC3691365 DOI: 10.4178/epih/e2013004] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2012] [Accepted: 04/23/2013] [Indexed: 01/21/2023] Open
Abstract
OBJECTIVES We aimed to investigate factors associated with colorectal cancer survival in Golestan, Iran. METHODS We used a population based cancer registry to recruit study subjects. All patients registered since 2004 were contacted and data were collected using structured questionnaires and trained interviewers. All the existing evidences to determine the stage of the cancer were also collected. The time from first diagnosis to death was compared in patients according to their stage of cancer using the Kaplan-Meir method. A Cox proportional hazard model was built to examine their survival experience by taking into account other covariates. RESULTS Out of a total of 345 subjects, 227 were traced. Median age of the subjects was 54 and more than 42% were under 50 years old. We found 132 deaths among these patients, 5 of which were non-colorectal related deaths. The median survival time for the entire cohort was 3.56 years. A borderline significant difference in survival experience was detected for ethnicity (log rank test, p=0.053). Using Cox proportional hazard modeling, only cancer stage remained significantly associated with time of death in the final model. CONCLUSIONS Colorectal cancer occurs at a younger age among people living in Golestan province. A very young age at presentation and what appears to be a high proportion of patients presenting with late stage in this area suggest this population might benefit substantially from early diagnoses by introducing age adapted screening programs.
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Affiliation(s)
- Mohammad Aryaie
- Golestan Research Center of Gastroenterology and Hepatology, Golestan University of Medical Sciences, Gorgan, Iran
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Affiliation(s)
- Edith P Mitchell
- Kimmel Cancer Center at Jefferson, 233 S 10th Street, Bluemle 502, Philadelphia, PA 19107, USA
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Hadziavdić V, Pavlović-Calić N, Eminović I. Molecular analysis: microsatellity instability and loss of heterozygosity of tumor suppressor gene in hereditary non-polyposis colorectal cancers (HNPCC). Bosn J Basic Med Sci 2009; 9:10-8. [PMID: 19284389 DOI: 10.17305/bjbms.2009.2850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
HNPCC (Hereditary non-polyposis colorectal cancers) development is caused by mutation of genes included in system of mismatch repair genes. The mutation exists at 60% of patients in hMSH2 gene, 30% in hMLH1 and 10% both in hPMS1and hPMS2 genes. RER+ exists in about 90% in hereditary non-polyposis colorectal cancer and about 15-28% in sporadic cancers. The purpose of the study was to determine highly sensitive microsatellite markers which can be fast and efficient way of microsatellite screening for detection of HNPCC patients. Moreover, we have analysed the loss of heterozygosity of tumour suppressor genes which could have the diagnostic value in detection of HPNCC patients.
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Affiliation(s)
- Vesna Hadziavdić
- Medical Centre for Molecular Biology, Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Vrazov trg 2, 1000 Ljubljana, Slovenia
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Moghimi-Dehkordi B, Safaee A, Zali MR. Comparison of colorectal and gastric cancer: survival and prognostic factors. Saudi J Gastroenterol 2009; 15:18-23. [PMID: 19568550 PMCID: PMC2702946 DOI: 10.4103/1319-3767.43284] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2007] [Accepted: 07/07/2008] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND/AIMS Gastric and colorectal cancers are the most common gastrointestinal malignancies in Iran. We aim to compare the survival rates and prognostic factors between these two cancers. METHODS We studied 1873 patients with either gastric or colorectal cancer who were registered in one referral cancer registry center in Tehran, Iran. All patients were followed from their time of diagnosis until December 2006 (as failure time). Survival curves were calculated according to the Kaplan-Meier Method and compared by the Log-rank test. Multivariate analysis of prognostic factors was carried out using the Cox proportional hazard model. RESULTS Of 1873 patients, there were 746 with gastric cancer and 1138 with colorectal cancer. According to the Kaplan-Meier method 1, 3, 5, and 7-year survival rates were 71.2, 37.8, 25.3, and 19.5%, respectively, in gastric cancer patients and 91.1, 73.1, 61, and 54.9%, respectively, in patients with colorectal cancer. Also, univariate analysis showed that age at diagnosis, sex, grade of tumor, and distant metastasis were of prognostic significance in both cancers (P < 0.0001). However, in multivariate analysis, only distant metastasis in colorectal cancer and age at diagnosis, grade of tumor, and distant metastasis in colorectal cancer were identified as independent prognostic factors influencing survival. CONCLUSIONS According to our findings, survival is significantly related to histological differentiation of tumor and distant metastasis in colorectal cancer patients and only to distant metastasis in gastric cancer patients.
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Affiliation(s)
- Bijan Moghimi-Dehkordi
- Research Center of Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Taleghani Hospital, Tehran, Iran.
| | - Azadeh Safaee
- Research Center of Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Taleghani Hospital, Tabnak St., Yaman Ave., Velenjak, Tehran, Iran
| | - Mohammad R. Zali
- Research Center of Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Taleghani Hospital, Tabnak St., Yaman Ave., Velenjak, Tehran, Iran
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Olschwang S, Bonaïti-Pellié C, Feingold J, Frébourg T, Grandjouan S, Lasset C, Laurent-Puig P, Lecuru F, Millat B, Sobol H, Thomas G, Eisinger F. [Identification and management of HNPCC syndrome (hereditary non polyposis colon cancer), hereditary predisposition to colorectal and endometrial adenocarcinomas]. ACTA ACUST UNITED AC 2006; 54:215-29. [PMID: 16677780 DOI: 10.1016/j.patbio.2006.02.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2005] [Accepted: 02/15/2006] [Indexed: 12/14/2022]
Abstract
BACKGROUND The HNPCC syndrome (hereditary nonpolyposis colon cancer) is an inherited condition defined by clinical and genealogical information, known as Amsterdam criteria. In about 70% of cases, HNPCC syndrome is caused by germline mutations in MMR genes, leading to microsatellite instability of tumor DNA (MSI phenotype). Patients affected by the disease are at high risk for colorectal and endometrial carcinomas, but also for small intestine, urothelial, ovary, stomach and biliary tract carcinomas. HNPCC syndrome is responsible for 5% of colorectal cancers. Identification and management of this disease are part of a multidisciplinary procedure. METHODS Twelve experts have been mandated by the French Health Ministry to analyze and synthesize their consensus position, and the resulting document has been reviewed by an additional group of 4 independent experts. MAIN RECOMMENDATIONS The lack of sensitivity of Amsterdam criteria in recognizing patients carrying a MMR germline mutation led to an enlargement of these criteria for the recruitment of possible HNPCC patients, and to a 2-steps strategy, asking first for a tumor characterization according to MSI phenotype, especially in case of early-onset sporadic cases. The identification of germline MMR mutations has no major consequence on the cancer treatments, but influences markedly the long-term follow-up and the management of at-risk relatives. Gene carriers will enter a follow-up program regarding their colorectal and endometrial cancer risks, but other organs being at low lifetime risk, no specific surveillance will be proposed.
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Liang H, Wang XN, Wang BG, Pan Y, Liu N, Wang DC, Hao XS. Prognostic factors of young patients with colon cancer after surgery. World J Gastroenterol 2006; 12:1458-62. [PMID: 16552821 PMCID: PMC4124330 DOI: 10.3748/wjg.v12.i9.1458] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the prognostic factors of 96 young patients with colon cancer within a cancer center by univariate and multivariate analysis.
METHODS: A total of 723 patients with colon cancer were treated surgically during a period of 10 years. Ninty six of them were 40 years old or younger. R0, R1 and R2 operations were performed in 69 (71.9%), 4 (4.1%) and 23 patients (24%), respectively. Left hemicolectomy was performed in 43 patients, right hemicolectomy in 37 patients, transverse colon resection in 9 patients and low anterior resection in 7 patients. Cox multivariate regression analysis was performed to identify predictors of survival.
RESULTS: The operation mortality was 0%, 54 patients died within 111 mo after operation due to occurrence or metastases of the tumor. Liver, lung and bone metastases occurred in 3, 1 and 5 patients, respectively. The mean survival time for all patients was 77.9 ± 5.01 mo and the overall 3-, 5- and 10- year survival rates were 66.68%,58.14% and 46.54%, respectively. In the univariate survival analysis, patient age,type of operation, radical resection, blood transfusion, histological type, diameter of tumor, depth of tumor invasion, lymphatic invasion, distant metastases, liver metastases and TNM stage were found to be predictors of survival in young patients with colon cancer. In the Cox-regression analysis, blood transfusion and lymphatic invasion were determined as independent prognostic factors of survival.
CONCLUSIONS: Age, type of operation, radical resection, blood transfusion, histological type, diameter of tumor, depth of tumor invasion, lymphatic invasion, distant metastasis and TNM stage are the predictors of survival in young patients with colon cancer after surgery.
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Affiliation(s)
- Han Liang
- Department of Gastrointestinal Oncological Surgery, Tianjin Cancer Hospital, Tianjin Medical University, Tiyuanbei, Hexi District, Tianjin 300060, China.
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Olschwang S, Eisinger F. Prédisposition héréditaire au cancer colorectal et inactivation de la fonction de réparation des mésappariements de l'ADN. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/j.emchg.2005.03.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Bonaïti-Pellié C, Eisinger F, Feingold J, Frébourg T, Grandjouan S, Lasset C, Laurent-Puig P, Lecuru F, Millat B, Sobol H, Thomas G, Olschwang S. Prédispositions héréditaires au cancer colorectal. ACTA ACUST UNITED AC 2005; 29:701-10. [PMID: 16142005 DOI: 10.1016/s0399-8320(05)82159-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Luo DC, Cai Q, Sun MH, Ni YZ, Ni SC, Chen ZJ, Li XY, Tao CW, Zhang XM, Shi DR. Clinicopathological and molecular genetic analysis of HNPCC in China. World J Gastroenterol 2005; 11:1673-9. [PMID: 15786548 PMCID: PMC4305952 DOI: 10.3748/wjg.v11.i11.1673] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To explore the clinicopathological and molecular genetic features of hereditary nonpolyposis colorectal cancer (HNPCC) in Chinese population.
METHODS: We collected 16 Chinese HNPCC families from Wenzhou, Zhejiang Province, China. Tumor tissues and peripheral white blood cells were studied using microdissection, microsatellite analysis, immunostaining of hMSH2 and hMLH1 proteins and direct DNA sequencing of hMSH2 and hMLH1 genes.
RESULTS: (1) A total of 50 patients had CRC. Average age at diagnosis of the first CRC was 45.7 years; 40.9% and 28.7% of the CRCs were located proximal to the splenic flexure and in the rectum, respectively. Thirty-eight percent of the colorectal cancer patients had synchronous and metachronous CRC. 34.4% and 25% of the CRCs were poor differentiation cancer and mucinous adenocarcinoma, respectively. Fourteen extracoloni tumors were found, and the hepatic cancer was the most common tumor type. Twenty-one patients whose median survival time was 5.7 years died during 1-23 years. Twenty-nine patients have survived for 1-28 years, 58.6%, 41.4% and 24.1% patients have survived for more than 5, 10 and 15 years, respectively; (2) All nine tumor-tissues showed microsatellite instability (MSI) at more than two loci. Four tumor-tissues lost hMSH2 protein expression and one lost hMLH1 protein expression. Three pathological germline mutations were identified from five genetically analyzed families; two of three mutations had not been reported previously as they were a transition from C to A in exon 14 (codon 743) of hMSH2 and a TTC deletion in exon 14 (codon 530) of hMLH1.
CONCLUSION: Chinese HNPCC have specific clinicopathological features, such as early onset, propensity to involve the proximal colon, and high frequency of multiple CRCs, liver cancer more frequent than endometrial cancer. Chinese HNPCC showed relatively frequent germline mutation of mismatch repair (MMR) genes that correlated closely with high-level MSI and loss of expression of MMR genes protein.
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Affiliation(s)
- Ding-Cun Luo
- Department of Surgical Oncology, Second People's Hospital of Wenzhou, Wenzhou 325028, Zhejiang Province, China.
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Olschwang S, Bonaïti C, Feingold J, Frébourg T, Grandjouan S, Lasset C, Laurent-Puig P, Lecuru F, Millat B, Sobol H, Thomas G, Eisinger F. Le syndrome HNPCC (hereditary non polyposis colon cancer) : identification et prise en charge. Rev Med Interne 2005; 26:109-18. [PMID: 15710257 DOI: 10.1016/j.revmed.2004.06.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2004] [Accepted: 06/04/2004] [Indexed: 01/07/2023]
Abstract
BACKGROUND The hereditary non-polyposis colon cancer (HNPCC) syndrome is an inherited condition defined by clinical and genealogical information, known as Amsterdam criteria. In about 70% of cases, HNPCC syndrome is caused by germline mutations in MMR genes, leading to microsatellite instability of tumor DNA (MSI phenotype). Patients affected by the disease are at high risk for colorectal and endometrial carcinomas, but also for other organs tumors. HNPCC syndrome is responsible for 5% of colorectal cancers. MAJOR ASPECTS The lack of sensitivity of Amsterdam criteria in recognizing patients carrying a MMR germline mutation led to an enlargement of these criteria for the recruitment of possible HNPCC patients, and to a two-steps strategy, asking first for a tumor characterization according to MSI phenotype, especially in case of early-onset sporadic cases. FURTHER DEVELOPMENTS The identification of germline MMR mutations has no major consequence on the cancer treatments, but influences markedly the long-term follow-up and the management of at-risk relatives. Gene carriers will enter a follow-up program regarding their colorectal and endometrial cancer risks; other organs being at low lifetime risk, no specific surveillance will be proposed.
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Affiliation(s)
- S Olschwang
- Institut Paoli-Calmettes, INSERM UMR 599, 232, boulevard Sainte-Marguerite, 13009 Marseille, France
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Cui L, Jin HY, Cheng HY, Yan YD, Meng RG, Yu DH. Genetic detection of Chinese hereditary nonpolyposis colorectal cancer. World J Gastroenterol 2004; 10:209-13. [PMID: 14716824 PMCID: PMC4717005 DOI: 10.3748/wjg.v10.i2.209] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
AIM: To explore the germline mutations of the two main DNA mismatch repair genes (hMSH2 and hMLH1) between patients with hereditary non-polyposis colorectal cancer (HNPCC) and suspected (atypical) HNPCC.
METHODS: Genomic DNA was extracted from the peripheral blood of the index patient of each family, and germline mutations of hMSH2 and hMLH1 genes were detected by PCR-single strand conformation polymorphism (PCR-SSCP) and DNA sequencing techniques.
RESULTS: For PCR-SSCP analysis, 67% (4/6) abnormal exons mobility in typical group and 33% (2/6) abnormal exons mobility in atypical group were recognized. In direct DNA sequencing, 50% (3/6) mutation of MMR genes in typical group and 33% (2/6) mutation of MMR genes in atypical group were found, and 4/6 (66.67%) and 1/6 (16.67%) mutations of hMSH2 and hMLH1 were identified in typical HNPCC and atypical HNPCC, respectively.
CONCLUSION: Mutation detection of the patients is of benefit to the analysis of HNPCC and, PCR-SSCP is an effective strategy to detect the mutations of HNPCC equivalent to direct DNA sequence. It seems that there exist more complicated genetic alterations in Chinese HNPCC patients than in Western countries.
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Affiliation(s)
- Long Cui
- Department of Colorectal Surgery, Changhai Hospital, The Second Military Medical University, Shanghai 200433, China.
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