Nicolas Williet

Dr. Nicolas Williet


Research Focus & Metrics

Academic Career Length

16Years (2011-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 August 2014 in Clinical Gastroenterology and Hepatology
Verified
Journal Article
Closed access
NWNicolas Williet
Nicolas Williet
WSWilliam J. Sandborn
William J. Sandborn
Laurent Peyrin-birouletLaurent Peyrin-biroulet
Laurent Peyrin-biroulet

11 August 2016 in Journal of Crohn's and Colitis
Verified
Journal Article
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PDF file
NWNicolas Williet
Nicolas Williet
HSHélène Sarter
Hélène Sarter
CGCorinne Gower-Rousseau
Corinne Gower-Rousseau
CACharlotte Adrianjafy
Charlotte Adrianjafy
AOAlain Olympie
Alain Olympie
Laurent Peyrin-birouletLaurent Peyrin-biroulet
Laurent Peyrin-biroulet
Background: Patient reported-outcomes (PROs) are a major therapeutic goal in inflammatory bowel disease (IBD). Methods: Between January to June 2014, patients affiliated with the French national IBD association filled out six self-questionnaires: quality of life (QoL, according to the Short Inflammatory Bowel Disease Questionnaire [SIBDQ] and the Short-Form-36 Questionnaire [SF-36] v2), fatigue (the Functional Assessment of Chronic Illness Therapy-Fatigue [FACIT-F]), work productivity (the Work Productivity and Activity Impairment [WPAI] questionnaire), disability [the Inflammatory Bowel Disease Disability Index], and anxiety/depression (the Hospital Anxiety and Depression scale [HADS]). Associated factors were identified by univariate and multivariate logistic regression analyses. Results: Datasets were obtained from 1185 IBD patients. Around half of patients reported poor QoL (SIBDQ<45: 53.3%), severe fatigue (FACIT-F7: 49.4%). One third of the patients reported anxiety (HAD-A>7: 30.3%) and/or moderate (22.4%) or severe (11.9%) disability. About half of them reported presenteeism and moderate-to-severe loss of work productivity and loss of activity. Poor QoL, severe fatigue, severe disease-related disability and/or high WPAI were all associated with female gender, unemployment and disease activity. Poor QoL, severe fatigue and high WPAI were also associated with the use of tumour necrosis factor antagonists. A history of surgery was associated with poor QoL, whereas age was associated with severe fatigue. Severe depression was associated with female gender and disease activity. Conclusion: The disease burden is very high in IBD, with poor QoL, fatigue, work impairment and depression in half of patients. Marked disability and anxiety were reported by one third of patients.

1 November 2017 in Clinical Gastroenterology and Hepatology
Verified
Journal Article
Closed access
NWNicolas Williet
Nicolas Williet
Giovanni BoschettiGiovanni Boschetti
Giovanni Boschetti
MFMarion Fovet
Marion Fovet
TBThomas Di Bernado
Thomas Di Bernado
PCPierre Claudez
Pierre Claudez
Xavier RoblinXavier Roblin
Xavier Roblin

10 October 2021 in Journal of Clinical Oncology
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Journal Article
Closed access
LDLaetitia Dahan
Laetitia Dahan
NWNicolas Williet
Nicolas Williet
KMKarine Le Malicot
Karine Le Malicot
JPJean-Marc Phelip
Jean-Marc Phelip
JDJérôme Desrame
Jérôme Desrame
FIfor the PRODIGE 35 Investigators/Collaborators
for the PRODIGE 35 Investigators/Collaborators
PURPOSE: Metastatic pancreatic cancer (mPC) still harbors a dismal prognosis. Our previous trial (PRODIGE 4—ACCORD 11) demonstrated the superiority of 6-month chemotherapy with fluorouracil, leucovorin, irinotecan, and oxaliplatin (FOLFIRINOX) over gemcitabine for overall survival. The high limiting oxaliplatin-related neurotoxicity supports the evaluation of an oxaliplatin stop-and-go strategy and a sequential strategy in mPC. METHODS: In this phase II study, patients were randomly assigned to receive either 6 months of FOLFIRINOX (arm A), 4 months of FOLFIRINOX followed by leucovorin plus fluorouracil maintenance treatment for controlled patients (arm B), or a sequential treatment alternating gemcitabine and fluorouracil, leucovorin, and irinotecan every 2 months (arm C). The primary end point was progression-free survival at 6 months. RESULTS: Between January 2015 and November 2016, 276 patients (mean age: 63 years; range: 40-76 years) were enrolled (A: 91, B: 92, and C: 90). Grade 3 or 4 neurotoxicity occurred in 10.2% of patients in arm A and 19.8% in arm B. The median ratio of received dose/targeted dose of oxaliplatin was 83% in arm A and 92% in arm B. The 6-month progression-free survival was 47.1% in A, 42.9% in B, and 34.1% in C. The median overall survival was 10.1 months in arm A, 11.2 in arm B, and 7.3 in arm C. Median survival without deterioration in quality-of-life scores was higher in the maintenance arm (11.4 months) than in arms A and C (7.2 and 7.5 months, respectively). CONCLUSION: Maintenance with leucovorin plus fluorouracil appears to be feasible and effective in patients with mPC controlled after 4 months of induction chemotherapy with FOLFIRINOX. Severe neurotoxicity was higher in the maintenance therapy arm, probably because of the higher cumulative dose of oxaliplatin.

26 April 2018 in Endoscopy
Verified
Journal Article
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NWNicolas Williet
Nicolas Williet
QTQuentin Tournier
Quentin Tournier
CVChloé Vernet
Chloé Vernet
ODOlivier Dumas
Olivier Dumas
LRLeslie Rinaldi
Leslie Rinaldi
MPMathieu Pioche
Mathieu Pioche
Background Yield of Endocuff-assisted colonoscopy (EAC) compared with standard colonoscopy is conflicting in terms of adenoma detection rate (ADR). A meta-analysis of randomized controlled trials (RCTs) appears necessary. Methods PubMed and Google Scholar were searched in December 2017. Abstracts from Digestive Disease Week and United European Gastroenterology Week meetings were also searched to 2017. All RCTs comparing EAC with standard colonoscopy were included. Analysis was conducted by using the Mantel–Haenszel models. Heterogeneity was quantified using the I 2 test. Results Of the 265 articles reviewed, 12 RCTs were included, with a total of 8376 patients (EAC group 4225; standard colonoscopy group 4151). In the meta-analysis, ADR was significantly increased in the EAC group vs. the standard colonoscopy group (41.3 % vs. 34.2 %; risk ratio [RR] = 1.20, 95 % confidence interval [CI] 1.06 to 1.36; P = 0.003; I 2 = 79 %), especially for operators with low-to-moderate ADRs (< 35 %): RR = 1.51, 95 %CI 1.35 to 1.69; P < 0.001; I 2 = 43 %). In contrast, this benefit was not reached for operators with high ADRs (> 45 %): RR = 1.01, 95 %CI 0.93 to 1.09; P = 0.87; I 2 = 0.0 %). The mean number of adenomas per patient tended to be higher with EAC (mean difference = 0.11 adenomas/patient, 95 %CI – 0.17 to 0.38). Similar results were shown for polyp detection rates (61.6 % vs. 51.4 %; RR = 1.20, 95 %CI 1.06 to 1.36; P = 0.004). Use of the Endocuff did not impact the cecal intubation rate (95.1 % vs. 95.7 %; P = 0.08), or the procedure time compared with standard colonoscopy. Adverse events related to Endocuff were rare and exclusively mild mucosal erosion (4.0 %; 95 %CI 2.0 % to 8.0 %). Conclusion With moderate-quality evidence, this study showed an improvement in ADR with EAC without major adverse events, especially for operators with low-to-moderate ADRs.

1 January 2019 in Therapeutic Advances in Gastroenterology
Verified
Journal Article
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NWNicolas Williet
Nicolas Williet
ASAngélique Saint
Angélique Saint
APAnne-Laure Pointet
Anne-Laure Pointet
DTDavid Tougeron
David Tougeron
SPSimon Pernot
Simon Pernot
Julien TaiebJulien Taieb
Julien Taieb
Folfirinox (FFX) and gemcitabine/nab-paclitaxel (GN) are both standard first-line treatments in patients with metastatic pancreatic cancer (mPC). However, data comparing these two chemotherapeutic regimens and their sequential use remain scarce. Data from two independent cohorts enrolling patients treated with FFX (n = 107) or GN (n = 109) were retrospectively pooled. Primary endpoint was overall survival (OS). Progression-free survival (PFS) was the secondary endpoint. A propensity score based on age, gender, performance status (PS), and presence of liver metastases was used to make groups comparable. In the whole study population, OS was significantly higher in FFX (14 months; 95% CI: 10–21) than in GN groups (9 months; 95% CI: 8–12) before (p = 0.008) and after (p = 0.021) adjusting for age, number of metastatic sites, liver metastases, peritoneal carcinomatosis and CA19.9 level at baseline. PFS tends to be higher in FFX (6 months) than GN groups (5 months; p = 0.053). After matching (n = 49/group), patients were comparable for all baseline characteristics including PS. In the matched population, there was a trend toward greater OS in patients treated with FFX (HR = 0.67; p = 0.097). However, survival in each group was not solely a result of the first-line regimen. The proportion of patients who were fit for GN after FFX failure (FFX–GN sequence) was higher (46.9%) than the reverse sequence (20.4%; p = 0.01), which suggests a higher feasibility for the FFX–GN sequence. Corresponding median OS were 19 months versus 9.5 months, respectively (p = 0.094). This study shows greater OS with FFX than with GN in patients with mPC. GN after FFX failure appears more feasible than the reverse sequence.