e-ISSN: Pending

Browse the failure-mode index

11,291 real negative results, null findings, and replication failures in Medicine · Negative / Null Result Report. Search the index →

WASTE indexes published research — it does not host or republish full papers. Each entry is a metadata record compiled from open scholarly databases; the abstract is shown in full only where the paper is openly licensed, otherwise a short excerpt under fair use. Classifications are automated and approximate.

Negative / Null Result ReportOpen accessMedicine

Tocilizumab in the treatment of critical COVID-19 pneumonia: A retrospective cohort study of mechanically ventilated patients

Matthew J. Fisher, Luis A Marcos Raymundo, Melinda Monteforte et al. · 2020 · International Journal of Infectious Diseases

OBJECTIVES: The purpose of this study is to evaluate clinical outcomes in patients with critical COVID-19 pneumonia requiring invasive mechanical ventilation who were treated with tocilizumab DESIGN: Single-center retrospective cohort…

View details →
Negative / Null Result ReportOpen accessMedicine

Replication of Five Prostate Cancer Loci Identified in an Asian Population—Results from the NCI Breast and Prostate Cancer Cohort Consortium (BPC3)

Sara Lindström, Fredrick R. Schumacher, Daniele Campa et al. · 2012 · Cancer Epidemiology Biomarkers & Prevention

BACKGROUND: A recent genome-wide association study (GWAS) of prostate cancer in a Japanese population identified five novel regions not previously discovered in other ethnicities. In this study, we attempt to replicate these five loci in a…

View details →
Negative / Null Result ReportOpen accessMedicine

Gradient boosted trees with individual explanations: An alternative to logistic regression for viability prediction in the first trimester of pregnancy

Thibaut Vaulet, M. Al‐Memar, H. Fourie et al. · 2021 · Computer Methods and Programs in Biomedicine

BACKGROUND: Clinical models to predict first trimester viability are traditionally based on multivariable logistic regression (LR) which is not directly interpretable for non-statistical experts like physicians. Furthermore, LR requires…

View details →
Negative / Null Result ReportOpen accessMedicine

CTIM-25. A RANDOMIZED PHASE 3 STUDY OF NIVOLUMAB OR PLACEBO COMBINED WITH RADIOTHERAPY PLUS TEMOZOLOMIDE IN PATIENTS WITH NEWLY DIAGNOSED GLIOBLASTOMA WITH METHYLATED MGMT PROMOTER: CHECKMATE 548

Michael Weller, Michael Lim, Ahmed Idbaïh et al. · 2021 · Neuro-Oncology

Abstract BACKGROUND Novel therapies are needed in newly diagnosed glioblastoma as nearly all patients experience recurrence following standard-of-care radiotherapy (RT) + temozolomide (TMZ), including patients with tumors with methylated…

View details →
Negative / Null Result ReportOpen accessMedicine

Validation of the Measures of the Transtheoretical Model for Exercise in an Adult African-American Sample

Cerissa L. Blaney, Mark L. Robbins, Andrea L. Paiva et al. · 2012 · American Journal of Health Promotion

PURPOSE: African-Americans have high rates of physical inactivity-related morbidity and mortality, thus effective interventions to increase exercise are necessary. Tailored interventions show promise, but measures need validation in this…

View details →
Negative / Null Result ReportMedicine

Extended Lymphadenectomy in Gastric Cancer Is Debatable

Vivian E. Strong, Sam S. Yoon · 2013 · World Journal of Surgery

Much debate still exists regarding the appropriate extent of lymphadenectomy for gastric adenocarcinoma. In high incidence countries in Eastern Asia, more extensive (e.g. D2) lymphadenectomies are standard, and these surgeries are…

View details →
Negative / Null Result ReportMedicine

Significant association of methylenetetrahydrofolate reductase single nucleotide polymorphisms with prostate cancer susceptibility in taiwan.

Hsi‐Chin Wu, Chao‐Hsiang Chang, Ru-Yin Tsai et al. · 2010 · PubMed

Prostate cancer is the most common cause of cancer death in men and is a major health problem worldwide. Methylene tetrahydrofolate reductase (MTHFR) plays an important role in folate metabolism and is also an important source of DNA…

View details →
Negative / Null Result ReportOpen accessMedicine

Efficacy of moderately hypofractionated simultaneous integrated boost intensity-modulated radiotherapy combined with temozolomide for the postoperative treatment of glioblastoma multiforme: a single-institution experience

Liangzhi Zhong, Lu Chen, Shengqing Lv et al. · 2019 · Radiation Oncology

PURPOSE: Despite recent advances in multimodal treatments, the prognosis of patients with glioblastoma multiforme (GBM) remains poor. The aim of this study was to evaluate the efficacy of moderately hypofractionated simultaneous integrated boost intensity-modulated radiotherapy (SIB-IMRT) combined with temozolomide (TMZ) for the postoperative treatment of GBM. MATERIALS AND METHODS: From February 2012 to February 2018, 80 patients with newly diagnosed and histologically confirmed GBM in our institute were reviewed retrospectively. All patients underwent complete resection or partial resection

View details →
Negative / Null Result ReportOpen accessMedicine

Significant Differences in the Development of Acquired Resistance to the MDM2 Inhibitor SAR405838 between In Vitro and In Vivo Drug Treatment

C. Gianna Hoffman-Luca, Chao-Yie Yang, Jianfeng Lü et al. · 2015 · PLoS ONE

SAR405838 is a potent and specific MDM2 inhibitor currently being evaluated in Phase I clinical trials for the treatment of human cancer. Using the SJSA-1 osteosarcoma cell line which harbors an amplified MDM2 gene and wild-type p53, we have investigated the acquired resistance mechanisms both in vitro and in vivo to SAR405838. Treatment of SJSA-1 cells with SAR405838 in vitro leads to dose-dependent cell growth inhibition, cell cycle arrest and robust apoptosis. However, prolonged treatment of SJSA-1 cells in vitro with SAR405838 results in profound acquired resistance to the drug. Analysis o

View details →
Negative / Null Result ReportMedicine

Quality of Life and 1-Year Survival in Patients With Early Septic Shock: Long-Term Follow-Up of the Australasian Resuscitation in Sepsis Evaluation Trial

Alisa M. Higgins, Sandra Peake, Rinaldo Bellomo et al. · 2019 · Critical Care Medicine

OBJECTIVES: To examine long-term survival and quality of life of patients with early septic shock. DESIGN: Prospective, randomized, parallel-group trial. SETTING: Fifty-one hospitals in Australia, New Zealand, Finland, Hong Kong, and the…

View details →
Negative / Null Result ReportMedicine

An ‘alcohol contract’ has no significant effect on return to drinking after liver transplantation for alcoholic liver disease

Steven Masson, Benjamin Marrow, Stuart Kendrick et al. · 2014 · Transplant International

Return to drinking after liver transplantation for alcoholic liver disease (ALD) remains a source of unease with varying reported rates of return to drinking and impact this has on graft function. In 2005, the UK Transplant liver advisory…

View details →
Negative / Null Result ReportOpen accessMedicine

Adjuvant chemotherapy does not benefit patients with esophageal squamous cell carcinoma treated with definitive chemoradiotherapy

Mingqiu Chen, Minmin Shen, Yu Lin et al. · 2018 · Radiation Oncology

BACKGROUND: The aim of the present study was to assess the efficacy of adjuvant chemotherapy (AC) in patients with esophageal squamous cell carcinoma (ESCC) treated with definitive chemoradiotherapy (CRT). METHODS: The clinical data of patients with ESCC treated with chemoradiotherapy with or without AC were collected and retrospectively reviewed. The overall survival (OS), locoregional failure-free survival (LFFS) and distant failure-free survival (DFFS) rates were analyzed statistically. RESULTS: A total of 187 patients fulfilled the inclusion criteria, 98 of whom were treated with CRT-alone

View details →
Negative / Null Result ReportMedicine

Adjuvant Therapy in Pancreatic Cancer

Amy Thomas, Khaled Dajani, John P. Neoptolemos et al. · 2010 · Digestive Diseases

Pancreatic cancer is one of the major causes of cancer death in Europe with a 5-year survival rate of less than 5%. Although surgery cannot guarantee a cure, the 5-year survival does improve to around 10% following resection and increases…

View details →
Negative / Null Result ReportOpen accessMedicine

Single nucleotide polymorphisms in the intergenic region between metformin transporter OCT2 and OCT3 coding genes are associated with short-term response to metformin monotherapy in type 2 diabetes mellitus patients

Linda Zaharenko, Ineta Kalniņa, Kristine Geldnere et al. · 2016 · European Journal of Endocrinology

Objective(s) High variability in clinical response to metformin is often observed in type 2 diabetes (T2D) patients, and it highlights the need for identification of genetic components affecting the efficiency of metformin therapy. Aim of…

View details →
Negative / Null Result ReportOpen accessMedicine

Design and rationale of randomized evaluation of decreased usage of beta-blockers after acute myocardial infarction (REDUCE-AMI)

Troels Yndigegn, Bertil Lindahl, Joakim Alfredsson et al. · 2022 · European Heart Journal - Cardiovascular Pharmacotherapy

AIMS: Most trials showing benefit of beta-blocker treatment after myocardial infarction (MI) included patients with large MIs and are from an era before modern biomarker-based MI diagnosis and reperfusion treatment. The aim of the…

View details →
Negative / Null Result ReportOpen accessMedicine

Impact of baseline and nadir neutrophil index in non-small cell lung cancer and ovarian cancer patients: Assessment of chemotherapy for resolution of unfavourable neutrophilia

Andreas Carus, Howard Gurney, Val Gebski et al. · 2013 · Journal of Translational Medicine

Chronic inflammation has been recognized to foster tumour development. Whether chemotherapy can be used to neutralize chronic inflammation is unclear. We evaluated baseline and nadir neutrophils in 111 patients (pts.) with non-small cell lung cancer (NSCLC) and 118 pts. with ovarian cancer (OC) treated with chemotherapy administered with dose-individualization to achieve nadir neutropenia of 1.5. We used predefined baseline neutrophil cut-offs 4.5 × 109/L (NSCLC) and 3.9 × 109/L (OC). Absence of chemotherapy-induced nadir neutropenia (CTCAE grade 0, neutrophils ≥ LLN) was seen in 23% of OC and

View details →
Negative / Null Result ReportOpen accessMedicine

Practice variation in anti-epileptic drug use for neonatal hypoxic-ischemic encephalopathy among regional NICUs

Maria L.V. Dizon, Rakesh Rao, Shannon E. G. Hamrick et al. · 2019 · BMC Pediatrics

BACKGROUND: While intercenter variation (ICV) in anti-epileptic drug (AED) use in neonates with seizures has been previously reported, variation in AED practices across regional NICUs has not been specifically and systematically evaluated. This is important as these centers typically have multidisciplinary neonatal neurocritical care teams and protocolized approaches to treating conditions such as hypoxic ischemic encephalopathy (HIE), a population at high risk for neonatal seizures. To identify opportunities for quality improvement (QI), we evaluated ICV in AED utilization for neonates with H

View details →
Negative / Null Result ReportOpen accessMedicine

Maternal perinatal depression and infant sleep problems at 1 year of age: Subjective and actigraphy data from a population‐based birth cohort study

Camila S. Halal, Diego G. Bassani, Iná S. Santos et al. · 2020 · Journal of Sleep Research

This study used data from 2,222 mothers and infants participating in a population-based birth cohort to verify whether maternal depression in the perinatal period was associated with poor infant sleep. Mothers who scored ≥13 points on the…

View details →
Negative / Null Result ReportOpen accessMedicine

No evidence for altered plasma NGF and BDNF levels in fibromyalgia patients

David Baumeister, Wolfgang Eich, Silvia Saft et al. · 2019 · Scientific Reports

There has been a surging interest in the putative role of peripheral growth factors in the pathophysiology of fibromyalgia, specifically in the peripheral sensitization that occurs in chronic pain disorders. This cross-sectional study set out to assess and compare brain-derived neurotrophic factor (BDNF) and nerve growth factor (NGF) in plasma samples from fibromyalgia patients and healthy controls. Plasma BDNF and NGF were measured in 89 fibromyalgia patients and 36 pain-free controls, and compared using ANCOVA controlling for potential confounders, as well as Bayesian methods for parameter e

View details →
Negative / Null Result ReportOpen accessMedicine

Construct Validity of a Serious Game for Laparoscopic Skills Training: Validation Study

Wouter M. IJgosse, Harry van Goor, Camiel Rosman et al. · 2020 · JMIR Serious Games

Background Surgical residents underutilize opportunities for traditional laparoscopic simulation training. Serious gaming may increase residents’ motivation to practice laparoscopic skills. However, little is known about the effectiveness of serious gaming for laparoscopic skills training. Objective The aim of this study was to establish construct validity for the laparoscopic serious game Underground. Methods All study participants completed 2 levels of Underground. Performance for 2 novel variables (time and error) was compared between novices (n=65, prior experience <10 laparoscopic proc

View details →
Negative / Null Result ReportOpen accessMedicine

Association between adjuvant chemotherapy and survival in patients with rectal cancer and pathological complete response after neoadjuvant chemoradiotherapy and resection

Fang He, Huai‐Qiang Ju, Yi Ding et al. · 2020 · British Journal of Cancer

BACKGROUND: For patients with locally advanced rectal cancer (LARC), it is unclear whether neoadjuvant chemoradiotherapy-induced pathologic complete response (pCR) individuals would further benefit from adjuvant chemotherapy (ACT). METHODS: The pCR individuals who received different ACT cycles were paired by propensity score matching. Overall survival (OS), disease-free survival (DFS), local recurrence-free survival (LRFS), and distant metastasis-free survival (DMFS) were calculated by Kaplan-Meier and log-rank test. RESULTS: In total, 1041 pCR individuals were identified from 5567 LARC cases.

View details →
Negative / Null Result ReportOpen accessMedicine

Does a Nebulized Heparin/N-acetylcysteine Protocol Improve Outcomes in Adult Smoke Inhalation?

Natalie Kashefi, Jonathan I. Nathan, Sharmila Dissanaike · 2014 · Plastic & Reconstructive Surgery Global Open

BACKGROUND: Smoke inhalation is a major source of morbidity and mortality. Heparin and N-acetylcysteine treatment has potential efficacy in inhalation injury. We investigated the impact of a heparin/N-acetylcysteine/albuterol nebulization…

View details →
Negative / Null Result ReportOpen accessMedicine

RETRACTED ARTICLE: Pharmacokinetics, Biodistribution, and Anti-Angiogenesis Efficacy of Diamino Propane Tetraiodothyroacetic Acid-conjugated Biodegradable Polymeric Nanoparticle

Weikun Li, Murat Yalçın, Dhruba J. Bharali et al. · 2019 · Scientific Reports

Abstract The anti-angiogenic agent, diamino propane tetraiodothyroacetic acid (DAT), is a thyro-integrin (integrin αvβ3) antagonist anticancer agent that works via genetic and nongenetic actions. Tetraiodothyroacetic acid (tetrac) and DAT as thyroid hormone derivatives influence gene expression after they transport across cellular membranes. To restrict the action of DAT to the integrin αvβ3 receptors on the cell surface, we used DAT-conjugated PLGA nanoparticles (NDAT) in an active targeting mode to bind to these receptors. Preparation and characterization of NDAT is described, and both in vi

View details →
Negative / Null Result ReportOpen accessMedicine

The use of high-flow nasal oxygen vs. standard oxygen therapy in hematological malignancy patients with acute respiratory failure in hematology wards

Nilgün Mendil, Şahin Temel, Recep Civan Yüksel et al. · 2021 · TURKISH JOURNAL OF MEDICAL SCIENCES

Background/aim: High flow nasal cannula (HFNC) was mostly used in intensive care units (ICUs) with few studies in other departments. We hypothesized that HFNC applied at wards is beneficial for acute respiratory failure in hematological malignancy patients. Materials and methods: The study is a single center, randomized controlled study. Inclusion criteria were hypoxemic respiratory failure and hematological malignancy. Patients were randomized to either venturi mask/nasal cannula oxygen treatment or HFNC. Results: One hundred patients were included in the study. Median age was 58.5 (18–86) ye

View details →
Negative / Null Result ReportOpen accessMedicine

Preoperative statins are associated with a reduced risk of postoperative delirium following vascular surgery

Dae-Sang Lee, Mi Yeon Lee, Chi-Min Park et al. · 2018 · PLoS ONE

Delirium is a common complication of vascular surgery. The protective effect of preoperative statins on delirium after vascular surgery is controversial. The authors hypothesized that preoperative statin administration would decrease the incidence of delirium after vascular surgery. From May 2010 to May 2015, 1,132 patients underwent vascular surgery. Postoperative delirium was diagnosed from patients' medical records. The incidence of delirium was 11.5%. The preoperative statin exposure was not associated with reduced delirium in the univariate analysis. After adjusting for covariates, preope

View details →
Negative / Null Result ReportOpen accessMedicine

Calcium intake and its relationship with risk of overweight and obesity in adolescents

Tamara Beres Lederer Goldberg, Carla Cristiane da Silva, Luciana Peres et al. · 2026 · Archivos Latinoamericanos de Nutrición

Adolescents' eating habits are determined by social, psychological, economic, political, and educational influences. They tend to prefer foods with inadequate nutritional value and high fat and carbohydrate content which leads to excessive…

View details →
Negative / Null Result ReportOpen accessMedicine

Sequential or Simultaneous Injection of Preformed Fibrils and AAV Overexpression of Alpha-Synuclein Are Equipotent in Producing Relevant Pathology and Behavioral Deficits

Matilde Negrini, Giuseppe Tomasello, Marcus Davidsson et al. · 2022 · Journal of Parkinson s Disease

BACKGROUND: Preclinical rodent models for Parkinson's disease (PD) based on viral human alpha-synuclein (h-αSyn) overexpression recapitulate some of the pathological hallmarks as it presents in humans, such as progressive cell loss and additional synucleinopathy in cortical and subcortical structures. Recent studies have combined viral vector-based overexpression of human wild-type αSyn with the sequential or simultaneous inoculation of preformed fibrils (PFFs) derived from human αSyn. OBJECTIVE: The goal of the study was to investigate whether sequential or combined delivery of the AAV vector

View details →