David M. Richards

ORCID: 0000-0002-4996-6063
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About
Contact & Profiles
Research Areas
  • Microscopic Colitis
  • Cancer Immunotherapy and Biomarkers
  • Colorectal Cancer Treatments and Studies
  • Gastric Cancer Management and Outcomes
  • Inflammatory Bowel Disease
  • Clinical Nutrition and Gastroenterology
  • Esophageal and GI Pathology
  • Colorectal Cancer Surgical Treatments
  • Gastrointestinal Bleeding Diagnosis and Treatment
  • Colorectal Cancer Screening and Detection
  • Gastroesophageal reflux and treatments
  • Eosinophilic Esophagitis
  • Colorectal and Anal Carcinomas
  • Health Systems, Economic Evaluations, Quality of Life
  • Central Venous Catheters and Hemodialysis
  • Nutrition and Health in Aging
  • Cancer Treatment and Pharmacology
  • Dysphagia Assessment and Management
  • Neuroendocrine Tumor Research Advances
  • Gastrointestinal Tumor Research and Treatment
  • Helicobacter pylori-related gastroenterology studies
  • Diverticular Disease and Complications
  • Antioxidants, Aging, Portulaca oleracea
  • Health Promotion and Cardiovascular Prevention
  • Potassium and Related Disorders

The University of Texas MD Anderson Cancer Center
2018-2025

Hospital Alemão Oswaldo Cruz
2024

Beneficência Portuguesa de São Paulo
2024

West Virginia School of Osteopathic Medicine
2022

West Virginia University
2022

Leiden University
2021

Erasmus MC Cancer Institute
2021

Baptist Cancer Center
2018

Massachusetts General Hospital
2018

University of Colorado Anschutz Medical Campus
2018

Diarrhea and colitis are the second most common immune checkpoint inhibitor (ICPI)-induced adverse events. However, a comprehensive characterization of endoscopic histologic features ICPI-induced diarrhea is lacking. Therefore, we aimed to describe gastrointestinal toxicities assess their association with patients’ clinical characteristics outcomes. We retrospectively reviewed records 53 patients ICPI-related diarrhea/colitis between 2011 2017. collected data on demographics, grade,...

10.1093/ibd/izy104 article EN Inflammatory Bowel Diseases 2018-04-27

<h3>Background</h3> Immune-mediated diarrhea and colitis (IMDC) can limit immune checkpoint inhibitors (ICIs) treatment, which is efficacious for advanced malignancies. Steroids infliximab are commonly used to treat it. These agents induce systemic immunosuppression, with its associated morbidity. We assessed clinical outcomes of vedolizumab as an alternative treatment IMDC. <h3>Methods</h3> analyzed a retrospective case series adults who had IMDC refractory steroids and/or received from...

10.1186/s40425-018-0461-4 article EN cc-by Journal for ImmunoTherapy of Cancer 2018-12-01
Laura M. Fernández Guilherme Pagin São Julião Nuno Figueiredo Geerard L. Beets Maxime J.M. van der Valk and 94 more Renu R. Bahadoer Denise E. Hilling Elma Meershoek‐Klein Kranenbarg Annet G.H. Roodvoets Andrew G. Renehan Cornelis J.�H. van de Velde Angelita Habr‐Gama Rodrigo Oliva Perez Ayman S. Abdelrazeq Oktar Asoğlu Rita Barroca Joy M. Beveridge Anup Kumar Bhowmick Anthony Blower Mike Braun Krzysztof Bujko P. Carter Carlos Carvalho Claudio Coco Chris Cunningham André D’Hoore Gabriel Dimofte Peirong Ding S. Duff Sharnie Dwyer Jonathan I. Epstein Daniel D. Evans Paul Fulford Wolfgang B. Gaertner Jean‐Pierre Gérard Simon Gollins Ryan A. Harris Ewen M. Harrison J. Heat J. Hill J Hobbiss Eduardo Huertas Zahirul Huq Soledad Iseas Anders Jakobsen Derek A. Jones Leslie S. Jones Uzair Ali Khan RS Kushwaha Nicholas P. Lees TY Linn S Loganathan Fernando López‐Campos Robert D. Madoff З. З. Мамедли Anna Martling Klaus E. Matzel Jarno Melenhorst Philip B. Mitchell Sthela Maria Murad‐Regadas Sarah O’Dwyer Alejandro Pairola Marius Paraoan Oriol Parés Koen Peeters S H Pettit N Pranesh R Rajaganeshan Srinivasan Ravi Shyamji Rawat David M. Richards K Riyad Gustavo Rossi H.J.T. Rutten M. Saeed J.R. Salaman Fernando Sánchez Loria Marit E. van der Sande Inês Santiago Chelliah Selvasekar K.H. Siddiqui Christopher J. Smart Mamoon Solkar Arthur Sun Myint Bruce Taylor Karen Telford Nigel Scott Carlos Vaccaro Bruna Borba Vailati C Verberne Pedro Vieira Dale Vimalchandran Sarah V. Ward Malcolm Wilson D. C. Winter Carlijn Witjes Albert Wolthuis Jing Zhang Zhen Zhang

10.1016/s1470-2045(20)30557-x article EN The Lancet Oncology 2020-12-13

Current treatment guidelines for immune-mediated diarrhea and colitis (IMDC) recommend steroids as first-line therapy, followed by selective immunosuppressive therapy (SIT) (infliximab or vedolizumab) refractory cases. We aimed to compare the efficacy of these two SITs their impact on cancer outcomes.We performed a two-center, retrospective observational cohort study patients with IMDC who received following from 2016 2020. Patients' demographic, clinical, overall survival data were...

10.1136/jitc-2021-003277 article EN cc-by Journal for ImmunoTherapy of Cancer 2021-11-01

Abstract Background Microscopic colitis (MC) has been described as 1 pattern of injury in immune checkpoint inhibitor (ICPI)–induced colitis. The main objective this study was to characterize ICPI-induced MC by exploring the differences risk factors, treatments, endoscopic features, and clinical outcomes between cancer noncancer patients with without exposure ICPIs. Methods A retrospective chart review conducted among diagnosed from our institutional pathology database January 2012 2018....

10.1093/ibd/izy240 article EN Inflammatory Bowel Diseases 2018-08-29

Background: Immune checkpoint inhibitors (ICIs) have demonstrated effectiveness in treating many malignancies. Gastrointestinal (GI) adverse events are commonly reported; however, few reports describe upper GI tract toxic effects. We aimed to clinical features of injury related ICI.Methods: studied consecutive patients who received ICIs between April 2011 and March 2018 developed symptoms requiring esophagogastroduodenoscopy (EGD).Results: Sixty ICI initiation 6 months after the last...

10.1080/00365521.2019.1594356 article EN Scandinavian Journal of Gastroenterology 2019-05-04

BACKGROUND: A study was performed to measure the quality of life patients receiving home parenteral nutrition (HPN). Quality is an important determinant effectiveness health technologies, but it has rarely been assessed in HPN. AIMS: To and highlight any moderating factors. PATIENTS AND METHODS: measured using two validated instruments (SF 36 EuroQol) 51 with intestinal failure. All had benign disease, commonest being Crohn9s disease (n = 35). RESULTS: HPN patient scores were worse for six...

10.1136/gut.40.2.218 article EN Gut 1997-02-01

10.1016/j.apm.2017.03.045 article EN publisher-specific-oa Applied Mathematical Modelling 2017-03-30

An economic evaluation of home parenteral nutrition (HPN) for intestinal failure is presented. The cost-utility HPN and factors affecting the ratio were examined to determine whether current practice most efficient way treating failure. Quality-adjusted life-years (QALYs) gained measured using a validated health status questionnaire. cost patient with was calculated, marginal per QALY ratios obtained. an average approximately 68,975 pounds, but value patients over 55 years age about 126,865...

10.1046/j.1365-2168.1996.02308.x article EN British journal of surgery 1996-09-01

Objective To measure quality of life (QoL), using validated health status instruments, patients with functioning IPAA for CUC. Patients and methods Between 1986 1997, a total 77 had an IPAA. Thirteen were excluded [6 excised, 3 awaiting ileostomy closure, 2 lost to follow up, serious unrelated illnesses]. Postal survey SF36 EuroQol questionnaires. Age, sex, year pouch construction stool frequency documented. Results Fifty‐six (87.5%) replied. Male:female ratio; 3:2. Median age; 34 years...

10.1046/j.1463-1318.2001.00228.x article EN Colorectal Disease 2001-07-06

Home parenteral nutrition (HPN) is used to treat intestinal failure. A minority of HPN patients are dependent on opiates and benzodiazepines control pain anxiety. The aim this study was determine what effects such drug dependence had patient outcomes.Ten were prospectively compared with 10 well-matched, nondependent for the same 12-month period. Episodes line sepsis other complications documented cost treatment estimated. Health status measured using SF36 EuroQol instruments.The group...

10.1177/0148607197021006336 article EN Journal of Parenteral and Enteral Nutrition 1997-11-01

Background: Chimeric antigen receptor T-cell (CART) therapy can significantly improve outcomes for patients with certain hematologic malignancies. The most notable drawbacks of CART are cytokine release syndrome and CART-related encephalopathy syndrome. Gastrointestinal adverse events (GI-AEs) have not yet been reported in association CART. Herein, we describe the incidence clinical features GI-AEs observed after Materials Methods: We report a case series malignancies who received CART,...

10.1097/coc.0000000000000596 article EN American Journal of Clinical Oncology 2019-09-02

Although immune checkpoint inhibitors (ICIs) have provided practice-changing outcomes in treating many cancers, ICI-related gastrointestinal toxicity can limit their use. Upper is not common nor as well described lower toxicity. We aimed to characterize the clinical presentation, endoscopic and histologic features, treatment response, of esophagitis.We retrospectively studied patients at The University Texas MD Anderson Cancer Center whom esophagitis developed after receiving ICIs from June...

10.6004/jnccn.2020.7675 article EN Journal of the National Comprehensive Cancer Network 2021-08-01

10.1002/bjs.1800830915 article EN British journal of surgery 1996-09-01

INTRODUCTION: Immune-mediated diarrhea and colitis (IMDC) may limit immune checkpoint inhibitors (ICIs) treatment. Current treatment for IMDC uses steroids as first-line therapy, followed by selective immunosuppressive therapy (SIT = infliximab or vedolizumab add-on) if steroid refractory. We aimed to compare the efficacy of SIT on impact cancer outcomes. METHODS: performed a retrospective cohort study patients with who received following from 6/2016 3/2020. Patient’s demographics, clinical...

10.14309/ajg.0000000000000848 article EN The American Journal of Gastroenterology 2020-10-01
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