Florence Renaud

• MD, PhD
• Sorbonne University

BACKGROUND The incidence of hepatocellular carcinoma (HCC) is on the rise worldwide, due to the increasing prevalence of liver diseases associated with metabolic dysfunction and better management of cirrhosis and its complications. The diversification of HCC treatments has recently increased, with the choice of strategy based on HCC characteristics...

The potential use of pro-senescence therapies, known as TIS (Therapy-Induced Senescence), for the treatment of colorectal cancer (CRC) generated significant interest since they require lower doses compared to those required for inducing apoptosis. However, the senescent cell cycle-arrested cancer cells are long-lived, and studies have revealed esca...

Purpose High throughput technologies have identified molecular patterns in colorectal cancer (CRC) cells, aiding in modeling responses to anti‐cancer treatments. The different responses observed depend on the type of cancer, the tumour grade and the functional programme of the cancer cells. Recent studies suggest that the unfolded protein response...

Background Microsatellite instability (MSI) due to mismatch repair deficiency (dMMR) is common in colorectal cancer (CRC). These cancers are associated with somatic coding events, but the noncoding pathophysiological impact of this genomic instability is yet poorly understood. Here, we perform an analysis of coding and noncoding MSI events at the d...

BACKGROUND Colorectal signet-ring cell carcinoma (CSRCC) is a rare clinical entity which accounts for approximately 1% of all colorectal cancers. Although multiple studies concerning this specific topic have been published in the past decades, the pathogenesis, associated risk factors, and potential implications on treatment are still poorly unders...

Introduction: This document is a summary of the French intergroup guidelines regarding the management of esophageal cancer (EC) published in July 2022, available on the website of the French Society of Gastroenterology (SNFGE) (www.tncd.org). Methods: This collaborative work was conducted under the auspices of several French medical and surgical...

Background: Mismatch repair deficient (dMMR) tumors displaying microsatellite instability (MSI) represent a paradigm for the success of immune checkpoint inhibitor (ICI)-based immunotherapy, particularly in patients with metastatic colorectal cancer (mCRC). However, a proportion of patients with dMMR/MSI mCRC exhibit resistance to ICI. Identificat...

While the incidence of gastric cancer (GC) in general has decreased worldwide in recent decades, the incidence of diffuse cancer historically comprising poorly cohesive cells-GC (PCC-GC) and including signet ring cell cancer is rising. Literature concerning PCC-GC is scarce and unclear, mostly due to a large variety of historically used definitions...

Objective: To describe the management of pathogenic CDH1 variant carriers (pCDH1vc) within the FREGAT (FRench Eso-GAsTric tumor) network. Primary objective focused on clinical outcomes and pathological findings, Secondary objective was to identify risk factor predicting postoperative morbidity (POM). Summary background data: Prophylactic Total G...

Background: The use of neoadjuvant chemotherapy (NAC) in patients with mismatch repair (MMR) deficient (dMMR) localized gastric and oeso-gastric junction (OGJ) adenocarcinoma is subject of debate. Histological response assessment might help to better evaluate the impact of dMMR on response to NAC. Methods: Patients with localized gastric/OGJ ade...

Heat shock proteins (HSPs) play oncogenic roles in human tumours. We reported a somatic inactivating mutation of HSP110 (HSP110DE9) in mismatch repair-deficient (dMMR) cancers displaying microsatellite instability (MSI) but did not assess its impact. We evaluated the impact of the Hsp110DE9 mutation on tumour development and the chemotherapy respon...

Tumors with microsatellite instability (MSI) represent a paradigm for the success of immune checkpoint inhibitor (ICI)-based immunotherapy, particularly in patients with metastatic colorectal cancer (mCRC). To date however, tools for predicting efficacy of these new therapies are lacking. Here we combined high-throughput DNA and RNA sequencing of t...

Background and aim Esophageal adenocarcinomas (EACs) have an increasing incidence and a poor prognosis. While gastric cancer molecular subtypes are well characterized with 4 categories: EBV+, Microsatellite instability (MSI), Genomically stable (GS), Chromosomal instability (CIN), there is less data available on EACs. Often compared to stomach, rec...

Objective To assess the impact of global physician empathy and its three subdimensions (establishing rapport, emotional and cognitive processes) on the severity of postoperative complications in a sample of cancer patients.Methods We retrospectively analyzed data on 256 patients with esogastric cancer from the French national FREGAT database. Empat...

Introduction Les adénomes hypophysaires constituent les masses intrasellaires les plus fréquentes. Observation Monsieur G., 73 ans, ancien chirurgien dentaire, consulte pour céphalées et baisse d’acuité visuelle de l’œil gauche. L’IRM hypophysaire réalisée retrouve un macroadénome hypophysaire mesurant 3,2 cm de plus grand axe, à extension suprase...

Background Two definitions of a positive circumferential resection margin (CRM) in esophageal cancer coexist: one by the College of American Pathologists (CAP) (CRM = 0 mm) and another by the Royal College of Pathologists (RCP) (CRM ≤ 1 mm). This study aimed to evaluate the prognostic value of both definitions in esophageal cancer and to identify a...

Background information Although improvements have been made in the management of pancreatic adenocarcinoma (PDAC) during the past 20 years, the prognosis of this deadly disease remains poor with an overall 5-year survival under 10%. Treatment with FOLFIRINOX, a combined regimen of 5-fluorouracil, irinotecan (SN-38) and oxaliplatin, is nonetheless a...

Glomus tumors (GT) are perivascular tumors mostly occurring in the distal extremities. Rare cases arise in the digestive tract and may be misdiagnosed with neuroendocrine or gastrointestinal stromal tumors. We aimed to specify the features of GT of the upper digestive tract. Clinical, histological, phenotypic and molecular features of 16 digestive...

Background & Aims Next generation sequencing (NGS) was recently approved by the FDA to detect microsatellite instability (MSI) arising from defective mismatch repair (dMMR) in patients with metastatic colorectal cancer (mCRC) prior to treatment with immune checkpoint inhibitors (ICI). In this study, we aimed to evaluate and improve the performance...

Background The optimal surgical procedure for duodenal gastrointestinal stromal tumors (D-GISTs) remains poorly defined. Pancreaticoduodenectomy (PD) allows for a wide resection but is associated with a high morbidity rate.Objectives The aim of this study was to compare the short- and long-term outcomes of PD versus limited resection (LR) for D-GIS...

Resume Objectif: Dans la sclérodermie systémique (ScS) et les myopathies inflammatoires idiopathiques (MII), les auto-anticorps sont utilisés dans la pratique quotidienne comme biomarqueurs des phénotypes cliniques. Cette étude vise à estimer la prévalence des anticorps spécifiques des myosites (ASM) et des anticorps associés aux myosites (AAM) en...

TNFα inhibitors, including adalimumab, are widely used in inflammatory rheumatologic and bowel diseases. Well-known adverse effects include: opportunistic infections, immunogenicity and new inflammatory manifestations. Myositis is an inflammatory disease, which manifests with muscle symptoms and can be life-threatening. Little is known about drug-i...

Objective. In systemic sclerosis (SSc) and idiopathic inflammatory myopathies (IIM), auto-antibodies are used in daily practice as potent biomarkers of clinical phenotypes. This study aimed at estimating the prevalence of myositis-specific (MSA) and myositis-associated (MAA) autoantibodies in a well-characterized SSc patients cohort using two diffe...

Background The literature on the prognostic relevance of signet-ring cell (SRC) histology in gastric cancer (GC) is controversial which is most likely related to inconsistent SRC classification based on haematoxylin–eosin staining. We hypothesised that mucin stains can consistently identify SRC-GC and predict GC patient outcome.Methods We performed...

Background and objectives: The aim of this study was to evaluate whether the amount of signet ring cells (SRCs) affects clinicopathological characteristics and prognosis of poorly cohesive (PC) gastric tumours. Study design: One hundred seventy-three patients with PC tumours treated at three European centres from 2004 to 2014 were reclassified i...

Résumé Le cancer gastrique est un cancer fréquent à l’échelle mondiale. La majorité des cancers gastriques sont sporadiques. Néanmoins, il existe 10 à 20 % d’agrégations familiales. Nous aborderons dans cette mise au point d’une part les formes non syndromiques de cancers gastriques d’origine héréditaire, notamment le cancer gastrique héréditaire d...

Aim The utility of Circumferential Resection Margin (CRM) status in predicting prognosis in oesophageal cancer remains controversial, with two different definitions of a positive CRM, one from the College of American Pathologists (CAP) (tumour at margin) and the other from the Royal College of Pathologists (RCP) (tumour within 1 mm)1-3. This study...

Multicystic peritoneal mesothelioma (MCPM) is a particularly rare and benign neoplasm that arises from the peritoneum in reproductive aged females. Its etiopathogenesis is still unclear. The current prevailing theory supports the idea that the tumor is the result of an excessive inflammatory process. Because of a lack of clinical and imaging presen...

Calcium (Ca2+) acts as a ubiquitous second messenger, and normal cell and tissue physiology strictly depends on the precise regulation of Ca2+ entry, storage and release. Store‐operated Ca2+ entry (SOCE) is a major mechanism controlling extracellular Ca2+ entry, and mainly relies on the accurate interplay between the Ca2+ sensor STIM1 and the Ca2+...

Introduction: Paediatric diffuse midline gliomas are devastating diseases. Among them, diffuse midline gliomas H3K27M-mutant are associated with worse prognosis. However, recent studies have highlighted significant differences in clinical behaviour and biological alterations within this specific subgroup. In this context, simple markers are needed...

Background and objective: Eosinophilic esophagitis (EoE) is an increasingly recognized childhood disease. Esophageal atresia (EA) is the most frequent congenital malformation of the esophagus. Recently, cases of EoE occurring in patients with EA have been reported, although the exact prevalence of EoE in EA remains unknown. The aim is to investiga...

But La marge de résection circonférentielle (MRC) envahie (R1) est un facteur pronostique du cancer de l’œsophage. Deux définitions s’affrontent : Américaine (marge envahie) et Britannique (marge ≤ 1 mm). L’objectif de cette étude est d’évaluer l’impact de la MRC sur les résultats oncologiques. Méthodes Tous les malades opérés d’un cancer de l’œso...

Objective. The main objective was to test the indirect effects of emotional competence (EC) after diagnosis (T1) on the health‐related quality of life (HRQoL) after surgery (T2) of esogastric cancer patients via fewer anxiety and depression symptoms (T2). Methods. Data were collected from 30 French centers via the clinico‐biological database FREGAT...

Importance Primary resistance to immune checkpoint inhibitors is observed in 10% to 40% of patients with metastatic colorectal cancer (mCRC) displaying microsatellite instability (MSI) or defective mismatch repair (dMMR). Objective To investigate possible mechanisms underlying primary resistance to immune checkpoint inhibitors of mCRC displaying M...

Background: total pancreatectomy with intraportal islet autotransplantation (TPIAT) rather than partial pancreatectomy could represent a major shift in the management of patients with resectable pancreatic ductal adenocarcinoma (PDAC) when risks of postoperative pancreatic fistula are well identified. This approach provides a theoretical risk of t...

Diffuse midline gliomas and especially diffuse intrinsic pontine gliomas are aggressive tumors with poor prognosis and no effective treatment. The identification of histone H3.3 mutations has been a large advance by defining groups with different prognoses. However, molecular and chromosomal landscape of these tumors needs to be further explored to...

Histiocytic sarcoma (HS) is a very uncommon malignant proliferation accounting for less than 1% of all neoplasms of hematopoietic and lymphoid tissues. According to the 2008 WHO classification of haematological and lymphoid tumours, diagnosis of HS requires histological and immunohistochemical evidence of histiocytic differentiation [1]. The 2016 C...

Lymph node involvement (LNI) is one of the most important prognostic factors for poor survival in medullary thyroid carcinoma (MTC). At diagnosis, LNI is found in over 50% of sporadic MTCs, and especially in large tumours. Cervical lymph node dissection is therefore mandatory during MTC surgery. However, some large tumours (responsible for high pre...

Background: Locoregional recurrence rates after definitive chemoradiotherapy (dCRT) for locally advanced esophageal cancer (EC) are high. Salvage surgery (SALV) is considered the best treatment option in case of persistent or recurrent disease for operable patients, but SALV has been associated with increased morbidity and mortality. The aim of th...

Background: While the incidence of esophageal and gastric cancers is increasing, the prognosis of these cancers remains bleak. Endoscopy and surgery are the standard treatments for localized tumors, but multimodal treatments, associated chemotherapy, targeted therapies, immunotherapy, radiotherapy, and surgery are needed for the vast majority of p...

Résumé Alors que l’incidence des cancers œsogastriques est particulièrement élevée en France, leur pronostic reste sombre et la recherche avance lentement comparativement à d’autres cancers. Il y a donc urgence à intensifier la recherche sur ces cancers et à mettre en place un outil large et ambitieux qui puisse répondre aux questions scientifiques...

Background: Patients treated with chemotherapy for microsatellite unstable (MSI) and/or mismatch repair deficient (dMMR) cancer metastatic colorectal cancer (mCRC) exhibit poor prognosis. We aimed to evaluate the relevance of distinguishing sporadic from Lynch syndrome (LS)-like mCRCs. Patients and methods: MSI/dMMR mCRC patients were retrospect...

Secreted mucins are large O-glycosylated proteins which participate in the protection/defence of underlying mucosae in normal adults. Alteration of their expression is a hallmark of numerous epithelial cancers and has often been correlated to bad prognosis of the tumor. The secreted mucin MUC5B is over-expressed in certain sub-types of gastric and...

Background: The impact of discrepancies between clinical (c) and pathologic (p) stages of esophageal cancer remains a poorly understood issue. This study aimed to compare the prognosis of patient groups treated by primary surgery including clinical N0/pathologic N0 (cN0pN0), clinical N0/pathologic N+ (cN0pN+), clinical N+/pathologic N0 (cN+pN0), a...

Currently, fine-needle aspiration is the most frequently used pre-operative technique for diagnosis of malignant thyroid tumors, however, pathologists are unable to reach efficient and accurate differential diagnoses between benign and malignant thyroid nodules. To aid in resolving this issue, immunohistochemistry for galectins (gal)-1, -3, -7, -8,...

Fine-needle aspiration (FNA) is the most commonly used pre-operative technique for diagnosis of malignant thyroid tumor. However, many benign lesions, with indeterminate diagnosis following FNA, are referred to surgery. Based on multifunctionality of the endogenous galectin-1, we aimed to assess its status for early diagnosis of thyroid cancer. Imm...

Background: Based on current guidelines, clinical T3N0M0 esophageal tumors may or may not receive neoadjuvant treatment, according to their perception as locally advanced (cT3) or early-stage tumors (stage II). The study aim was to assess the impact of neoadjuvant treatment upon survival for cT3N0M0 esophageal cancer patients, with subgroup analys...

Background: Intrathoracic (vs cervical) anastomosis and a thoracotomy (vs absence) have previously been associated with increasing postoperative mortality (POM). Recent improvements in surgical practices and perioperative management may have changed these dogmas. Objectives: The aim of this study was to evaluate the impact of performing intratho...

Background: Prognosis of patients (pts) with metastatic colorectal cancer (mCRC) harboring microsatellite instability (MSI) is poorly characterized. We aimed to assess the clinical relevance of distinguishing sporadic (SP) from Lynch syndrome (LS)-related mismatch repair deficiency (dMMR). Methods: Pts with diagnostic of dMMR and/or MSI mCRC betwee...

Pancreatic cancer cells express high levels of MUC1, MUC4 and MUC16 mRNAs that encode membrane-bound mucins. These mRNAs share unusual features such as a long half-life. However, it remains unknown how mucin mRNA stability is regulated. Galectin-3 (Gal-3) is an endogenous lectin playing important biological functions in epithelial cells. Gal-3 is e...

122 Background: More than age, patient comorbidity is increasingly considered as the prominent predictor of postoperative mortality (POM) in esophageal and gastric cancer surgery, leading a growing number of elderly to be operated on. However, the respective impact of age and comorbidity on POM remains to be elucidated. The study objective was to i...

A heterozygous germline variant in the HABP2 gene c.1601G > A (p.Gly534Glu), which negatively impacts its tumor suppressive activity in vitro, has been described in 4–14% of kindreds of European-American ancestry with familial papillary thyroid carcinoma (fPTC). But it is also found in ≈4% of Europeans and European/Americans from public databases t...

Objective A heterozygous germline variant in the HABP2 gene (p.G534E), that negatively impacts its tumor suppressive activity in vitro, has been described in 4 to 14% of kindreds of European ancestry with familial papillary thyroid carcinoma (fPTC). But it is also found in ≈4% of Europeans and European Americans from public databases that, however,...

Purpose: Langerhans cell histiocytosis (LCH) is an inflammatory myeloid neoplasia with a broad spectrum of clinical manifestations and outcomes in children. The somatic BRAF(V600E) mutation occurs frequently, but clinical significance remains to be determined. Patients and methods: BRAF(V600E) mutation was investigated in a French LCH cohort. We...

Objective: To investigate the impact of center volume on postoperative mortality (POM) according to patient condition. Background: Centralization has been shown to improve POM in esophageal and, to a lesser extent, gastric cancer surgery; however, the benefit of centralization for patients with low operative risk is questionable. Methods: All...

Objective: To evaluate complete tumor resection rate (primary objective), 30-day postoperative outcomes, and survival (secondary objectives) in patients with a hiatal hernia (HH) ≥5 cm (HH group) compared with those who did not have a HH or presented with a HH <5 cm (control group). Background: HH is a risk factor for esophageal and junctional a...

Anastomotic leakage following total gastrectomy or esophagectomy is a significant complication that considerably increases postoperative mortality. The location of the anastomosis together with the anatomy of the esophagus explains the severity of this complication. Surgical knowledge should include general and specific predictive factors of leakag...

SALL4 has important functions in embryonic stem cells. The aim of this study was to investigate SALL4 expression in gestational trophoblastic neoplasia. We hypothesized that it could help to distinguish choriocarcinoma, the presumed most primitive form of gestational trophoblastic neoplasia, from placental site trophoblastic tumor and epithelioid t...

Background: The benefit of neoadjuvant chemotherapy (NCT) for early-stage oesophageal cancer is unknown. The aim of this study was to assess whether NCT improves the outcome of patients with stage I or II disease. Methods: Data were collected from 30 European centres from 2000 to 2010. Patients who received NCT for stage I or II oesophageal canc...

Wilms tumor is the most common renal tumor in children, and the 5-year survival rate is approximately 85%. The majority of relapses occur in the lung, tumor bed, and liver within 2 years of diagnosis. In this study, we describe an unusual late tumor recurrence that occurred 9.5 years after the primary diagnosis. The patient presented with a slow gr...

Les cancers colorectaux (CCR) constituent un véritable problème de santé publique. En France, en 2015, ils se situent au 3ème rang des cancers et au 2ème rang des décès par cancer, en raison d’un diagnostic souvent tardif et de réponses variables aux thérapeutiques. L’amélioration des tests de dépistage ces vingt dernières années n’a pas significat...

Background/objectives: CA 19-9 is the gold standard biomarker of pancreatic adenocarcinoma despite several weaknesses in particular a high rate of false positives or negatives. CA-125 corresponding to MUC16 and galectin-3, a lectin able to interact with mucin-associated carbohydrates, are tumor-associated proteins. We investigated whether combined...

Two patients with an unmethylated MGMT promoter and IDH1 (R132H) wild-type recurrent glioblastoma were treated with crizotinib. Prolonged stabilization of the disease (17 months) was achieved in the first case. Interestingly, anaplastic lymphoma kinase (ALK) expression and c-MET protein overexpression was observed. Conversely, no response to crizot...

The serrated neoplasia pathway accounts for 20 to 30% of colorectal cancers (CRC), which are characterised by extensive methylation (CpG Island Methylation Phenotype, CIMP), frequent BRAF mutation and high microsatellite instability (MSI). We recently identified MUC5AC mucin gene hypomethylation as a specific marker of MSI CRC. The early identifica...

Constitutive COL2A1 mutations are associated with a wide variety of clinical manifestations known as type II collagenopathies. Among them is Kniest dysplasia, which is phenotypically variable and includes both skeletal (short trunk and limbs, kyphoscoliosis, prominent joints, and osteoarthritis) and craniofacial characteristics. Kniest dysplasia mu...

Whereas the optimal therapeutic strategy in node positive esophageal cancer primarily treated by surgery remains unknown, the study was designed to evaluate the impact of adjuvant chemotherapy on survival in such population. Among 2944 consecutive patients operated on for esophageal cancer between 2000 and 2010 in 30 European centers, patients with...

Supplementary data: DES DNA sequences in the affected and an unaffected individual. A: DNA sequence electropherogram of an unaffected individual showing wild-type C at position 38. B: DNA sequence electropherogram showing the heterozygous c.38C>T substitution that replaces Ser by Phe at codon 13 in the affected individual. The position of mutated (...

MUC1 is an oncogenic mucin overexpressed in several epithelial cancers, including pancreatic ductal adenocarcinoma, and is considered as a potent target for cancer therapy. To control cancer progression, miRNAs became very recently, major targets and tools to inhibit oncogene expression. Inhibiting MUC1 using miRNAs appears thus as an attractive st...

Colorectal cancers (CRC) with microsatellite instability (MSI) display unique clinicopathologic features including a mucinous pattern with frequent expression of the secreted mucins MUC2 and MUC5AC. The mechanisms responsible for this altered pattern of expression remain largely unknown. We quantified DNA methylation of mucin genes (MUC2, MUC5AC, M...

Our aim was to decipher the role and clinical relevance of the YAP/TAZ transcriptional coactivators in the regulation of the proliferation/quiescence balance in human colon cancer cells (CCC) and survival after 5FU-based chemotherapy. The prognostic value of YAP/TAZ on tumor relapse and overall survival was assessed in a five-year follow-up study u...

Background: The incidence of papillary thyroid carcinoma (PTC) has increased over the past 30 years in Western countries. PTC is usually associated with a good prognosis, but there is a wide range of aggressiveness, and some patients develop distant metastasis and/or resistance to standard treatment. Early identification of these high-risk tumors...

Pancreatic ductal adenocarcinoma (PDAC) is among the most lethal cancers in the world with one of the worst outcome. The oncogenic mucin MUC4 has been identified as an actor of pancreatic carcinogenesis as it is involved in many processes regulating pancreatic cancer cell biology. MUC4 is not expressed in healthy pancreas whereas it is expressed ve...

To investigate the performance of two proposed methods for assessing the prognosis of poorly differentiated thyroid carcinomas (PDTC): the Turin proposal and Hiltzik's histological grade (HHG). This was done using a series of 82 thyroid carcinomas of follicular origin. The two methods were able to classify patients accurately into two different pro...