Franck Zinzindohoué

Université René Descartes - Paris 5, Paris, Ile-de-France, France

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Publications (18)111.76 Total impact

  • Article: Sleeve Gastrectomy Severe Complications: Is It Always a Reasonable Surgical Option?
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    ABSTRACT: BACKGROUND: Laparoscopic sleeve gastrectomy (LSG) is widely adopted but exposes serious complications. METHODS: A retrospective database analysis was done to study LSG staple line complications in a tertiary referral university center with surgical ICU experienced in treatment of morbid obesity and complications. Twenty-two consecutive patients were referred between January 2004 and February 2012 with postoperative gastric leak or stenosis after LSG. Interventions consisted in the control of intra-abdominal and general sepsis; restoration of staple line continuity or revision of LSG; nutritional support; treatment of associated complications. Main outcome measures concerned success rates of therapeutic strategies, morbidity and mortality rates, LOS, and time to cure. RESULTS: Thirteen patients (59 %) were referred after failure of reoperation (seven fistula repairs were attempted). Three patients received emergency surgery in our center with transorificial intubation and jejunostomy formation. An endoscopic stent was tried in nine patients but failed in 84.6 % of cases within 20 days (1-161). Seven patients (32 %) necessitated total gastrectomy within 217 days (0-1,915 days) for conservative treatment failure. Procedures under general anesthesia were required in 41 % of cases, organ failure was found in 55 % of cases, and central venous device infection in 40 %. Mortality rate was 4.5 % (n = 1). Patients with unfavorable evolution of LSG complications (death or additional gastrectomy) had more previous bariatric procedure (82 % vs. 18 %, p = 0.003). Median time to cure was 310 days (9-546 days). CONCLUSIONS: LSG exposes severe complications occurring in patients with benign condition. Endoscopic stents entail high failure rate. Total gastrectomy is required in one third of the cases.
    Obesity Surgery 02/2013; · 3.29 Impact Factor
  • Article: Response of renal cell carcinoma pancreatic metastasis to sunitinib treatment: a retrospective analysis.
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    ABSTRACT: Pancreatic metastasis accounts for 2% of metastatic renal cell carcinoma cases. Surgical management is typically recommended because of the limited value of immunotherapy as an effective treatment. Sunitinib recently showed clinical efficacy in patients with advanced renal cell carcinoma. We report a series of patients with pancreatic metastasis treated with sunitinib. We retrospectively studied a population of 15 adults with pancreatic metastasis of renal cell carcinoma at 1 center in France and at 2 in the United States who were treated with sunitinib between 2005 and 2007. Sunitinib monotherapy was given at a dose of 50 mg orally in 6-week cycles, consisting of 4 weeks of treatment followed by 2 weeks of rest. All clinical and radiological data were analyzed. At a median followup of 20 months the overall tumor response using Response Evaluation Criteria in Solid Tumors was 34%. Median time to relapse was 20 months. Two deaths were noted and median survival was not attained. Responses in the pancreatic metastasis were seen in 28% of patients and were stable in 72%. The main grade 3 and 4 adverse events were diarrhea in 7% of cases and fatigue in 7%. Only grade 1 increased lipase was noted in 27% of patients and no increase in amylase was noted. Sunitinib is effective in patients with pancreatic metastasis. This raises the question of whether patients with metastatic renal cell carcinoma limited to the pancreas may derive greater clinical benefit from anti-angiogenic agents, rather than from aggressive surgical resection. However, surgery remains the only potential cure in patients with isolated pancreatic metastasis.
    The Journal of urology 05/2009; 181(6):2470-5; discussion 2475. · 4.02 Impact Factor
  • Article: [Colonic diverticulosis: which patients need surgery?].
    Franck Zinzindohoué, Guy Samama
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    ABSTRACT: Diverticular disease has become a very common condition in elder and more recently in younger patients in western countries that emerged at the turn of the 20th century and since then has become epidemic. An increasing incidence and an earlier onset of the disease lead us to update the current therapeutic indications, especially for surgery in elective condition. Whereas elective colectomy was performed for poorly documented suspicions of diverticulitis in the past, a positive diagnosis of diverticulitis on CT scan is needed. Therefore, indications for colectomy are restricted to patients with medical history of related endocarditis, diabetes mellitus, proven structural abnormalities of collagen, immune deficiency, after a second episode of diverticulitis requiring at least an hospitalisation or after a single complicated diverticulitis (abscess, fistula, stricture). A two-months delay between symptoms and surgery is suitable, and permits to perform preoperatively a colonoscopy in a safe condition to rule out concomitant adenoma or colonic cancer. There is no randomised trial of open versus laparoscopic colectomy in this specific indication. As the lesions of resected colon became more severe due to restricted indications, laparoscopic approach will require more surgical skill and conversion rate might increase. In selected cases, open surgery should be preferred.
    La Revue du praticien 02/2009; 59(1):16-9.
  • Article: Primary results of laparoscopic mini-gastric bypass in a French obesity-surgery specialized university hospital.
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    ABSTRACT: Since 2002, we have performed 350 laparoscopic Roux-en-Y gastric bypasses (LRYGB). We decided to evaluate the laparoscopic mini-gastric bypass (LMGB), an operation reported as effective, yet simpler than LRYGB. It consisted of a long lesser curvature tube with a terminolateral gastroenterostomy, 200 cm distal to the Treitz ligament. From October 2006 to November 2007, 100 patients (23 men and 77 women) underwent LMGB. The mean age was 40.9 +/- 11.5 years (17.5-62.4), the preoperative mean body weight was 131 +/- 23.1 kg (82-203) and the mean BMI was 46.9 +/- 7.4 kg/m(2) (32.8-72.4). Twenty-four patients had prior restrictive procedure: 20 LAGB of which nine were already removed and four VBG (two laparoscopic and two by open surgery). In preoperative gastric endoscopy Helicobacter pylorii was present in 26 patients and eradicated. All procedures were completed laparoscopically by six different surgeons. Mean operative time was 129 +/- 37 min. There was no death. Seven patients (7%) presented major early complications: three reoperations for incarcerated herniation of small bowel in the trocar wound, one peritonitis due to a traumatic injury of the biliary limb, one perianastomotic abscess, one intraabdominal bleeding requiring splenectomy, and one endoscopic haemostasis for anastomotic bleeding. One patient presented anastomotic stenosis that required endoscopic dilatation 2 months postoperatively. Mean BMI at 3 months was 38.7 kg/m(2) (31.2-60.9) and at 6 months 35.1 (23.6-53.0). Nine patients complained of diarrhea that resolved 3 months postoperatively and, significantly, only two patients complained of biliary reflux. Pending long-term evaluation, LMBG seems a good alternative to LRYGB, giving the same results with a more simple and reproductible technique.
    Obesity Surgery 07/2008; 18(9):1130-3. · 3.29 Impact Factor
  • Article: [Surgical treatment of peritoneal carcinomatosis with reduction surgery and perioperative chemotherapy].
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    ABSTRACT: So far, peritoneal carcinomatosis had been considered as the last progression stage of intra-abdominal cancers, and thus without any therapeutic recourse. During the last ten years, the association of tumour surgical resection and perioperative intraperitoneal chemotherapy (with or without hyperthermia) has proven to produce long term survival and even cure. This aggressive therapeutic strategy is associated with mortality and morbidity, which add to the mortality and morbidity of surgery and chemotherapy. It thus requires a careful patient selection conducted by specialized multidisciplinary teams. The main indications are peritoneal carcinomatosis on colorectal cancer, stomach cancer, ovarian cancer, pseudomyxoma and mesothelioma. The treatment can also be initiated secondarily, if carcinomatosis is detected during a procedure performed in a center where this type of treatment is not provided. An organ resection should thus be performed. The patient is then referred to a specialized center, either within the ten days following the procedure, or after three months, most of the time after an adjuvant therapy.
    La Revue du praticien 06/2008; 58(9):940-3.
  • Article: [Cholelithiasis. 15 years of dramatic diagnostic and therapeutic change].
    Franck Zinzindohoué
    La Revue du praticien 01/2008; 57(19):2113-4.
  • Article: [Acute cholangitis].
    Franck Zinzindohoué
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    ABSTRACT: Acute cholangitis is an acute inflammation and infection in the bile duct mainly due to calculous obstruction. Its clinical presentation is the Charcot's triad "pain of the right upper quadrant, fever, jaundice" appearing within 1 or 2 days. The anatomical diagnosis is made by ultra sonography or MRI cholangiography. Patients have to be admitted in ICU for an urgent treatment of the sepsis, the drainage of the infected bile and the removal of the obstruction. Endoscopy and interventional radiology have completely modified the management in diagnostic and treatment strategies, and laparoscopic surgery has modified the surgical approach for the systematic cholecystectomy and the main bile duct exploration. It is important to recognise the occurrence of an acute pancreatitis, a potentially severe related condition.
    La Revue du praticien 01/2008; 57(19):2129-33.
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    Article: Type, density, and location of immune cells within human colorectal tumors predict clinical outcome.
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    ABSTRACT: The role of the adaptive immune response in controlling the growth and recurrence of human tumors has been controversial. We characterized the tumor-infiltrating immune cells in large cohorts of human colorectal cancers by gene expression profiling and in situ immunohistochemical staining. Collectively, the immunological data (the type, density, and location of immune cells within the tumor samples) were found to be a better predictor of patient survival than the histopathological methods currently used to stage colorectal cancer. The results were validated in two additional patient populations. These data support the hypothesis that the adaptive immune response influences the behavior of human tumors. In situ analysis of tumor-infiltrating immune cells may therefore be a valuable prognostic tool in the treatment of colorectal cancer and possibly other malignancies.
    Science 10/2006; 313(5795):1960-4. · 31.20 Impact Factor
  • Article: [Matrix metalloproteinases and gastrointestinal tract cancers].
    Franck Zinzindohoué, Thierry Lecomte, Pierre Laurent-Puig
    Gastroentérologie Clinique et Biologique 05/2005; 29(4):434-44. · 0.80 Impact Factor
  • Article: Clinical value of mitochondrial mutations in colorectal cancer.
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    ABSTRACT: Prognostic factors that could select high-risk recurrence colorectal cancer patients and predict chemosensitivity are needed. Since mutations of mitochondrial DNA (mtDNA) have been described in different types of cancers and since they may play a role in response to anticancer agents, we investigated in a population-based series of colorectal cancer patients the clinical value of mtDNA mutations. The displacement loop (D-loop) region of mtDNA was sequenced on a series of 365 patients recorded in the Digestive Cancer Registry of Côte-d'Or (France) between 1998 and 2000. Clinicopathologic characteristics were correlated to the presence of a D-loop mutation. Survival rates were compared with the log-rank test. A multivariate survival analysis was performed. D-loop mutations were found in 38.3% of the tumors. The 3-year survival rate was 53.5% in patients with D-loop mutation versus 62.1% in patients without (P = .05). After adjustment for age, stage, and microsatellite instability status, the relative risk of death in patients with D-loop mutation was 1.40 (95% CI, 1.02 to 1.93; P = .034) as compared with those without. In stage III colon cancers, adjuvant chemotherapy was beneficial only for patients without D-loop mutation (3-year survival, 78.3% v 45.4%, P < .02). In those with D-loop mutation who received adjuvant chemotherapy, the relative risk of death was 4.30 (95% CI, 1.23 to 15.00; P < .02). The D-loop region is a hotspot for somatic mutations in colorectal tumors. Moreover, presence of tumor D-loop mutation appears to be a factor of poor prognosis in colorectal patients and a factor of resistance to fluorouracil-based adjuvant chemotherapy in stage III colon cancers.
    Journal of Clinical Oncology 05/2005; 23(15):3517-25. · 18.37 Impact Factor
  • Article: Prognostic significance of MMP-1 and MMP-3 functional promoter polymorphisms in colorectal cancer.
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    ABSTRACT: Matrix metalloproteinase (MMP) belongs to a large group of proteases capable of breaking essentially all components of the extracellular matrix. They are implicated in all steps of tumorogenesis, cancer invasion, and metastasis. Among them, metalloproteinase type 1 (MMP-1) is implicated in tumor invasion and metastasis in different types of cancers including colorectal cancer in which its expression was correlated with poor prognosis. A polymorphism in the promoter region of the MMP-1 gene leads to a variation of its level of transcription. MMP-1 -1607ins/delG and MMP-3 - 1612 ins/delA promoter polymorphisms were genotyped by multiplex PCR from 201 colorectal cancer patients. The median follow-up of patients was 30 months. The MMP genotypes were correlated to clinical outcome. Patients with the -1607insG/-1607insG MMP-1 genotype had significantly worse specific survival than the others in the whole series (P < 0.04), in stage I to III patients (P < 0.001), and in patients stage I and II (P < 0.01). In multivariate analysis, MMP-1-1607insG allele showed to be an independent poor prognostic factor after adjustment on stage, age, and the use of adjuvant chemotherapy. MMP-3 polymorphism was not associated with survival. In the subgroups of nondistant metatastic patients (stages I and II, and stages I-III), an inverse relation between the number of MMP-1-1607insG allele and survival was observed suggesting a gene dosage effect. Our results are consistent with the importance of MMP-1-1607ins/delG functional polymorphism in regulating transcription level and with the relationship between MMP-1 expression and cancer invasion, metastasis, and prognosis.
    Clinical Cancer Research 02/2005; 11(2 Pt 1):594-9. · 7.74 Impact Factor
  • Article: Thymidylate synthase gene polymorphism predicts toxicity in colorectal cancer patients receiving 5-fluorouracil-based chemotherapy.
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    ABSTRACT: The target enzyme for 5-fluorouracil (5-FU) is thymidylate synthase (TS). The TYMS gene encoding this enzyme is polymorphic, having either double (2R) or tri-tandem (3R) repeats of a 28-bp sequence in the promoter region and a 6-bp variation in the 3'-untranslated region (3'-UTR). TS expression predicts response to 5-FU-based chemotherapy, and the expression seems to be determined by the TYMS gene promoter. The aim of this study was to investigate the utility of determining these two TYMS gene polymorphisms to predict the toxicity and efficacy of 5-FU treatment in patients with colorectal cancer. The determination of TYMS genotypes was performed in tumor and normal tissues by PCR amplification from 90 patients with colorectal cancer who were treated with adjuvant or palliative 5-FU-based chemotherapy. Associations between polymorphisms in the TYMS promoter and in the 3'-UTR gene and clinical outcome of these 90 patients treated with 5-FU based chemotherapy were evaluated individually. The linkage between TYMS promoter and TYMS 3'-UTR region polymorphisms was evaluated and a haplotype analysis was performed. Individuals who were homozygous for the double repeat in the TYMS promoter region had more severe side effects to 5-FU. Patients with a 2R/2R, a 2R/3R, or a 3R/3R genotype had a grade 3 or 4 toxicity rate of 43, 18, and 3% respectively (P < 0.01). The TYMS promoter and TYMS 3'-UTR polymorphisms were in linkage disequilibrium, and the haplotype 2R/ins 6-bp was significantly associated with a high risk of severe side effects to 5-FU. The TYMS promoter and TYMS 3'-UTR polymorphisms were not associated with a response to 5-FU and survival of patients who received palliative 5-FU-based chemotherapy. This study demonstrated that TYMS genotyping could be of help in predicting toxicity to 5-FU-based chemotherapy. TYMS genotyping might make it possible to individualize treatment for patients with colorectal cancer.
    Clinical Cancer Research 09/2004; 10(17):5880-8. · 7.74 Impact Factor
  • Article: Impact of GSTT1, GSTM1, GSTP1 and NAT2 genotypes on KRAS2 and TP53 gene mutations in colorectal cancer.
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    ABSTRACT: Which carcinogens are of influence in the development of human colorectal cancers remains a question; one answer could be the finding that specific polymorphisms in xenobiotic metabolizing enzymes are related to particular mutations in cancer genes. KRAS2 and TP53 gene mutations as well as genotypes for GSTM1, GSTP1, GSTT1 and NAT2 were determined in an exploratory series of 165 stable colorectal cancers. Mutations in KRAS2 and TP53 were found in 34% and 57.5% of cases, respectively. The KRAS2 mutation frequency was significantly lower in patients with a GSTT1 null genotype than in those with a GSTT1 non-null genotype (18% vs. 38%, p = 0.03). The overall risk of KRAS2 mutation for patients with distal colorectal cancer and GSTT1 null genotype was 0.3 (95% CI 0.1-0.9) compared to patients with distal colorectal cancer and non-null GSTT1 genotype. The overall risk of KRAS2 mutation was similarly reduced (OR = 0.4, 95% CI 0.2-0.9) for patients with distal colorectal cancer and GSTP1 mutated genotypes compared to patients with distal colorectal cancer and wild-type genotype. Patients with GSTP1 wild-type genotype appeared to be at significantly lower risk for TP53 mutation compared to patients with mutated genotypes (p = 0.023). Our results suggest that GSTT1 and GSTP1 could play a role in the occurrence of KRAS2 and TP53 mutations in colorectal cancer and generate a hypothesis on the dietary factors that could be incriminated.
    International Journal of Cancer 07/2004; 110(2):183-7. · 5.44 Impact Factor
  • Article: Matrix metalloproteinase 3 polymorphism: a predictive factor of response to neoadjuvant chemotherapy in head and neck squamous cell carcinoma.
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    ABSTRACT: Treatment of head and neck cancer often associates different therapeutic modalities, including surgery, radiotherapy, and chemotherapy. In an attempt to optimize therapeutics, the identification of molecular markers linked to response to chemotherapy remains important. Recently, the involvement of metalloproteinases in resistance to chemotherapy was suggested through their interaction with the Fas/Fas ligand pathway. Indeed metalloproteinases enhance Fas ligand shedding modulating chemotherapy efficiency. On the basis of these findings, we tested the existence of a correlation between response to chemotherapy and four metalloproteinase polymorphisms in a prospective series of 148 head and neck cancer patients. Patients were genotyped using automated fragment analysis and 5'-nuclease allelic discrimination assay. Response to chemotherapy was clinically assessed without knowledge of the genotype status. A significant relation between the metalloproteinase type 3 (MMP3) -1612insA polymorphism and response to chemotherapy was identified. Indeed, patients with the 6A/6A genotype responded more frequently (86%) to treatment as compared with patients with the 5A/6A (65%) or 5A/5A (55%) genotypes (P = 0.04). A multivariate analysis, including tumor stage, gender, TP53 mutations, and MMP3 polymorphism, showed that the 6A/6A genotype was an independent factor of response to 5-fluorouracil-cisplatin chemotherapy in head and neck cancer patients with an odds ratio of 6.7 as compared with the 5A/5A genotype. This work showed that genotyping the MMP3 gene enhancer polymorphism -1612insA could help predict chemosensitivity in head and neck cancer patients.
    Clinical Cancer Research 05/2004; 10(8):2594-9. · 7.74 Impact Factor
  • Article: Complications after laparoscopic adjustable gastric banding for morbid obesity: experience with 1,000 patients over 7 years.
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    ABSTRACT: Laparoscopic adjustable gastric banding (LAGB) is considered the least invasive surgical option for morbid obesity. It is less efficient than gastric bypass in weight loss, but has the advantage of being potentially reversible and can improve the quality of life if mortality and morbidity are low. Between 1996 and 2003, 1,000 patients underwent LAGB. There were 896 women and 104 men with mean age 40.4 years (16.3-66.3). Preoperative mean BMI was 44.3 kg/m(2). There were no deaths. Cumulative rate of complications was 192 (19.2%). 12 were life-threatening (1.2%): gastric perforation (n=4), acute respiratory distress (n=2), pulmonary embolism (n=2), migration (n=3), and gastric necrosis (n=1). 111 patients required an abdominal reoperation (11.1%) for perforation (n=2), slippage (n=78), migration (n=3), necrosis (n=1), esophageal dilatation (n=2), incisional hernias (n=4) and port problems (n=21). Before October 2000, we used the perigastric technique, and the slippage rate was 24% (91 / 378 ).Then, we changed to the pars flaccida approach and the slippage rate fell to 2% (13 / 622). The pars flaccida approach demonstrated safety in relation to both risks of perforation and slippage. The cumulative complication rate increased to 3-4 years, and then decreased with experience and technical improvement. Concerns of long-term follow-up should be migration and esophageal dilatation, which seem to be rare at 3 years.
    Obesity Surgery 04/2004; 14(3):407-14. · 3.29 Impact Factor
  • Article: Frequent mutations of hepatocyte nuclear factor 1 in colorectal cancer with microsatellite instability.
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    ABSTRACT: The TCF1 gene encoding hepatocyte nuclear factor 1 alpha (HNF1), a transcription factor germline mutated in patients with maturity-onset diabetes of the young type 3, was recently found to be frequently inactivated by biallelic alterations in liver adenoma and in rare hepatocellular carcinomas. The impact of HNF1 in colorectal carcinogenesis has not been studied until now. Colorectal cancer is characterized by the existence of different molecular mechanisms known as microsatellite stable or unstable tumors. At first, a series of 10 adenomas and 29 colon cancers regardless of microsatellite instability status were screened for TCF1 mutations on the entire coding sequence. Three mutations in microsatellite instability high (MSI-H) tumors were found in the exon 4 polymorphic poly-cytosin (C)(8) or (C)(9) tract and consisted of a cytosin deletion at position 291. To further characterize the prevalence of TCF1 mutations in the subgroup of MSI-H tumors, 52 additional MSI-H samples were screened for exon 4 alterations; 23% of MSI-H tumors (95% confidence interval, 14%-36%) were found to harbor frameshift at the poly-cytosin tract. The (C)(9) allele was significantly more frequently mutated than the (C)(8) allele (22% vs. 8%; P = 0.03), showing a higher instability of the longer repetition. These results show a role for HNF1 in MSI-H colorectal carcinogenesis.
    Gastroenterology 05/2003; 124(5):1311-4. · 11.68 Impact Factor
  • Article: Detection of free-circulating tumor-associated DNA in plasma of colorectal cancer patients and its association with prognosis.
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    ABSTRACT: Tumor cells are characterized by specific genetic alterations. When such genetic alterations are identified in body fluid including plasma, regardless of the presence of detectable tumor cells, it shows the existence of free-circulating tumor-associated DNA. The objective of our study was to assess the prognostic value of free-circulating tumor-associated DNA in colorectal cancer patients' plasma. The first step of our work was to find common genetic alterations in tumors that would subsequently be used for plasma DNA screening. We focused on KRAS2 mutations in codons 12 and 13 by the mutant allele-specific amplification (MASA) method and p16 hypermethylation by the methylation-specific polymerase chain reaction (MSP) method. Patients with a tumor presenting either alteration were selected for plasma screening; 58 tumors were analyzed for KRAS2 mutations and tested for p16 gene promoter methylation. Survival and recurrence rates were assessed in patients with and without free-circulating tumor-associated DNA alterations in plasma. Of the 58 tumors analyzed, 39 (67%) demonstrated either one or both of the studied genetic alterations. Twenty-two (38%) were mutated at KRAS2, and an identical alteration was detected in 10 (45%) of the 22 corresponding plasma samples. Thirty-one (53%) had p16 gene promoter hypermethylation that could also be detected in the plasma in 21 cases (68%). Among the 39 patients who had one or the other alteration in tumor DNA, 37 had at least one reliable plasma test. In 26 (70%) of the 37 patients, free-circulating tumor-associated DNA was detected in plasma. The 2-year overall survival rate was 48% in the group where free-circulating tumor-associated DNA was detected in plasma and 100% in the one where free-circulating tumor-associated DNA was not detected in plasma (p < 0.03). Among these 37 patients, 25 patients had a stage I, II or III disease. In this subgroup of patients, the 2-year recurrence-free survival rate for the 17 patients with free-circulating tumor-associated DNA detected in plasma was 66%, compared to 100% for the 8 patients without free-circulating tumor-associated DNA detected in plasma (p = 0.044). The presence of free-circulating tumor-associated DNA in plasma seems to be a relevant prognostic marker for patients with colorectal cancer and may be used to identify patients with a high risk of recurrence.
    International Journal of Cancer 09/2002; 100(5):542-8. · 5.44 Impact Factor
  • Article: Single nucleotide polymorphisms in MMP1 and MMP3 gene promoters as risk factor in head and neck squamous cell carcinoma.
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    ABSTRACT: Matrix metalloproteinase (MMP) 1 and 3 genes play an important role in initiating tumor growth and promoting cell spread. Since MMP1 and MMP3 transcription levels can be modulated by promoter polymorphism, we investigated the impact of different genotypes on the occurrence of head and neck cancer in a Caucasian case control study. DNA was extracted from 126 male head and neck cancer patients and from 249 male hospitalized-based controls. Genotyping was carried out using PCR multiplex allowing the co-amplification of MMAP1-1607 bp and MMP3-1171 bp polymorphisms. PCR products were separated on a capillary electrophoresis. The MMP1-2G and the MMP3-6A allele frequencies were significantly lower in cases than in controls. In particular homozygous 2G/2G individuals were at lower risk of cancer than the 1G/1G carriers (OR= 0.37 95%CI [0.19-0.71], p=0.003). MMP1 and MMP3 polymorphisms were in moderate linkage disequilibrium in cases and controls (D'=0.41 and D'=0.46). Haplotype frequencies distribution derived from these 2 polymorphisms was significantly different between cases and controls (p=0.01). The haplotype analysis suggested an implication of both MMP1 and MMP3 polymorphisms in the head and neck squamous cell carcinoma susceptibility. Indeed, the presence of the MMP1-2G and MMP3-6A alleles seemed to be associated with decreased risk of head and neck squamous cell carcinoma but mainly when they were carried by the same haplotype. By comparison to the 1G-5A haplotype, the 2G-6A haplotype was associated with a lower risk of head and neck squamous cell carcinoma (OR=0.52 95%CI [0.34-0.80], p=0.003).
    Anticancer research 24(3b):2021-6. · 1.73 Impact Factor