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Browse the failure-mode index

12,218 real negative results, null findings, and replication failures in Medicine. 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 ReportMedicine

Low serum 25-hydroxyvitamin D levels are associated with increased all-cause mortality risk in a general population: the Tromsø study

Moira Strand Hutchinson, Guri Grimnes, Ragnar M. Joakimsen et al. · 2010 · European Journal of Endocrinology

OBJECTIVE: Ecologic and observational studies have suggested an association between serum 25-hydroxyvitamin D (25(OH)D) levels and cardiovascular disease (CVD) risk factors, CVD mortality, and cancer mortality. Based on this, low serum…

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Negative / Null Result ReportOpen accessMedicine

The association between lactate, mean arterial pressure, central venous oxygen saturation and peripheral temperature and mortality in severe sepsis: a retrospective cohort analysis

Aletta P. I. Houwink, Saskia Rijkenberg, Rob J. Bosman et al. · 2016 · Critical Care

BACKGROUND: During resuscitation in severe sepsis and septic shock, several goals are set. However, usually not all goals are equally met. The aim of this study is to determine the relative importance of the different goals, such as mean arterial pressure (MAP), lactate, central venous oxygen saturation (ScvO2) and central to forefoot temperature (delta-T), and how they relate to intensive care unit (ICU) and hospital mortality. METHODS: In a retrospective cohort study in a 20-bed mixed medical and surgical ICU of a teaching hospital we studied consecutive critically ill patients who were admi

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Negative / Null Result ReportOpen accessMedicine

Dementia Revealed: Novel Chromosome 6 Locus for Late-Onset Alzheimer Disease Provides Genetic Evidence for Folate-Pathway Abnormalities

Adam C. Naj, Gary W. Beecham, Eden R. Martin et al. · 2010 · PLoS Genetics

Genome-wide association studies (GWAS) of late-onset Alzheimer disease (LOAD) have consistently observed strong evidence of association with polymorphisms in APOE. However, until recently, variants at few other loci with statistically significant associations have replicated across studies. The present study combines data on 483,399 single nucleotide polymorphisms (SNPs) from a previously reported GWAS of 492 LOAD cases and 496 controls and from an independent set of 439 LOAD cases and 608 controls to strengthen power to identify novel genetic association signals. Associations exceeding the ex

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Negative / Null Result ReportOpen accessMedicine

Lipoprotein (a) concentrations, apolipoprotein (a) phenotypes, and peripheral arterial disease in three independent cohorts

Anja Laschkolnig, Barbara Kollerits, Claudia Lamina et al. · 2014 · Cardiovascular Research

AIMS: The relevance of lipoprotein(a) [Lp(a)] concentrations and low-molecular-weight (LMW) apo(a) phenotypes in peripheral arterial disease (PAD) has only been investigated by few studies. Therefore, we analysed this association in three…

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Negative / Null Result ReportOpen accessMedicine

Subjective Cognitive Decline Correlates With Depression Symptoms and Not With Concurrent Objective Cognition in a Clinic-Based Sample of Older Adults

Zvinka Z. Zlatar, Martha C. Muniz, Douglas Galasko et al. · 2016 · The Journals of Gerontology Series B

Objectives: Subjective cognitive decline (SCD) is common in older adults; however, its utility in clinic-based samples remains controversial given its strong associations with mood symptoms. Methods: Five hundred nineteen individuals aged…

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Negative / Null Result ReportOpen accessMedicine

Survival rates and prognostic factors for infiltrating salivary duct carcinoma: Analysis of 228 cases from the Surveillance, Epidemiology, and End Results database

Vijayvel Jayaprakash, Mihai Merzianu, Graham Warren et al. · 2013 · Head & Neck

BACKGROUND: The survival rates and prognostic factors for salivary duct carcinoma (SDC) are not clear. METHODS: Survival estimates and prognostic factors were evaluated for 228 patients with SDC identified from the Surveillance,…

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Negative / Null Result ReportOpen accessMedicine

Impact of CFTR Modulation on Intestinal pH, Motility, and Clinical Outcomes in Patients With Cystic Fibrosis and the G551D Mutation

Daniel Gelfond, Sonya L. Heltshe, Chang‐Xing Ma et al. · 2017 · Clinical and Translational Gastroenterology

OBJECTIVES: A defect in bicarbonate secretion contributes to the pathophysiology of gastrointestinal complications in patients with cystic fibrosis (CF). We measured gastrointestinal pH, clinical outcomes, and intestinal transit profiles…

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Negative / Null Result ReportOpen accessMedicine

An experimental study on the effects of a simulation game on students’ clinical cognitive skills and motivation

Mary Dankbaar, Jelmer Alsma, Els E. H. Jansen et al. · 2015 · Advances in Health Sciences Education

Simulation games are becoming increasingly popular in education, but more insight in their critical design features is needed. This study investigated the effects of fidelity of open patient cases in adjunct to an instructional e-module on students' cognitive skills and motivation. We set up a three-group randomized post-test-only design: a control group working on an e-module; a cases group, combining the e-module with low-fidelity text-based patient cases, and a game group, combining the e-module with a high-fidelity simulation game with the same cases. Participants completed questionnaires

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Negative / Null Result ReportMedicine

Randomized Clinical Trial of Sodium Polystyrene Sulfonate for the Treatment of Mild Hyperkalemia in CKD

Laurence Lepage, A Dufour, Jessica Doiron et al. · 2015 · Clinical Journal of the American Society of Nephrology

BACKGROUND AND OBJECTIVES: Hyperkalemia affects up to 10% of patients with CKD. Sodium polystyrene sulfonate has long been prescribed for this condition, although evidence is lacking on its efficacy for the treatment of mild hyperkalemia…

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Negative / Null Result ReportOpen accessMedicine

Identification of subclasses of sepsis that showed different clinical outcomes and responses to amount of fluid resuscitation: a latent profile analysis

Zhongheng Zhang, Gensheng Zhang, Hemant Goyal et al. · 2018 · Critical Care

BACKGROUND AND OBJECTIVE: Sepsis is a heterogeneous disease and identification of its subclasses may facilitate and optimize clinical management. This study aimed to identify subclasses of sepsis and its responses to different amounts of fluid resuscitation. METHODS: This was a retrospective study conducted in an intensive care unit at a large tertiary care hospital. The patients fulfilling the diagnostic criteria of sepsis from June 1, 2001 to October 31, 2012 were included. Clinical and laboratory variables were used to perform the latent profile analysis (LPA). A multivariable logistic regr

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Negative / Null Result ReportOpen accessMedicine

Efficacy of coupled plasma filtration adsorption (CPFA) in patients with septic shock: A multicenter randomised controlled clinical trial

Sergio Livigni, Guido Bertolini, Carlotta Rossi et al. · 2014 · BMJ Open

OBJECTIVES: Coupled plasma filtration adsorption (CPFA, Bellco, Italy), to remove inflammatory mediators from blood, has been proposed as a novel treatment for septic shock. This multicenter, randomised, non-blinded trial compared CPFA…

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Negative / Null Result ReportOpen accessMedicine

Maintenance therapy with bortezomib plus thalidomide or bortezomib plus prednisone in elderly multiple myeloma patients included in the GEM2005MAS65 trial

María‐Victoria Mateos, Albert Oriol, Joaquín Martínez‐López et al. · 2012 · Blood

Maintenance therapy has become a hot field in myeloma, and it may be particularly relevant in elderly patients because the major benefit results from the initial therapy. We report the results of a randomized comparison of maintenance with…

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Negative / Null Result ReportOpen accessMedicine

Efficacy of Sym004 in Patients With Metastatic Colorectal Cancer With Acquired Resistance to Anti-EGFR Therapy and Molecularly Selected by Circulating Tumor DNA Analyses

Clara Montagut, Guillem Argilés, Fortunato Ciardiello et al. · 2018 · JAMA Oncology

IMPORTANCE: Acquired resistance to anti-EGFR therapy (epidermal growth factor receptor) is frequently due to RAS and EGFR extracellular domain (ECD) mutations in metastatic colorectal cancer (mCRC). Some anti-EGFR-refractory patients…

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Negative / Null Result ReportOpen accessMedicine

Daptomycin Plus Fosfomycin Versus Daptomycin Alone for Methicillin-resistant Staphylococcus aureus Bacteremia and Endocarditis: A Randomized Clinical Trial

Miquel Pujol, J. M. Miró, Evelyn Shaw et al. · 2020 · Clinical Infectious Diseases

BACKGROUND: We aimed to determine whether daptomycin plus fosfomycin provides higher treatment success than daptomycin alone for methicillin-resistant Staphylococcus aureus (MRSA) bacteremia and endocarditis. METHODS: A randomized (1:1)…

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Negative / Null Result ReportMedicine

Value of Age, Creatinine, and Ejection Fraction (ACEF Score) in Assessing Risk in Patients Undergoing Percutaneous Coronary Interventions in the ‘All-Comers' LEADERS Trial

Joanna J. Wykrzykowska, Scot Garg, Yoshinobu Onuma et al. · 2011 · Circulation Cardiovascular Interventions

BACKGROUND: The age, creatinine, and ejection fraction (ACEF) score (age/left ventricular ejection fraction+1 if creatinine >2.0 mg/dL) has been established as an effective predictor of clinical outcomes in patients undergoing elective…

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Replication FailureOpen accessMedicine

Mediterranean-type diet and brain structural change from 73 to 76 years in a Scottish cohort

Michelle Luciano, Janie Corley, Simon R. Cox et al. · 2017 · Neurology

OBJECTIVE: To assess the association between Mediterranean-type diet (MeDi) and change in brain MRI volumetric measures and mean cortical thickness across a 3-year period in older age (73-76 years). METHODS: We focused on 2 longitudinal brain volumes (total and gray matter; n = 401 and 398, respectively) plus a longitudinal measurement of cortical thickness (n = 323), for which the previous cross-sectional evidence of an association with the MeDi was strongest. Adherence to the MeDi was calculated from data gathered from a food frequency questionnaire at age 70, 3 years prior to the baseline i

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Negative / Null Result ReportMedicine

Efficacy and tolerability of adjunctive brivaracetam in adults with uncontrolled partial‐onset seizures: A phase IIb, randomized, controlled trial

Wim Van Paesschen, Édouard Hirsch, Martin Johnson et al. · 2012 · Epilepsia

PURPOSE: To evaluate the efficacy and tolerability of adjunctive brivaracetam (BRV), a novel high-affinity synaptic vesicle protein 2A ligand that also displays inhibitory activity at neuronal voltage-dependent sodium channels, in adult…

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Negative / Null Result ReportOpen accessMedicine

Effect of Vocimagene Amiretrorepvec in Combination With Flucytosine vs Standard of Care on Survival Following Tumor Resection in Patients With Recurrent High-Grade Glioma

Timothy F. Cloughesy, Kevin Petrecca, Tobias Walbert et al. · 2020 · JAMA Oncology

Importance: New treatments are needed to improve the prognosis of patients with recurrent high-grade glioma. Objective: To compare overall survival for patients receiving tumor resection followed by vocimagene amiretrorepvec (Toca 511)…

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Negative / Null Result ReportOpen accessMedicine

COVID-19 in patients with hematologic malignancy

Petra Langerbeins, Michael Hallek · 2022 · Blood

The coronavirus infectious disease (COVID-19) shows a remarkable symptomatic heterogeneity. Several risk factors including advanced age, previous illnesses, and a compromised immune system contribute to an unfavorable outcome. In patients…

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Negative / Null Result ReportOpen accessMedicine

Ten-year follow-up results of a randomized clinical trial comparing left thoracoabdominal and abdominal transhiatal approaches to total gastrectomy for adenocarcinoma of the oesophagogastric junction or gastric cardia

Yukinori Kurokawa, Mitsuru Sasako, Takeshi Sano et al. · 2015 · British journal of surgery

BACKGROUND: The optimal surgical approach for treatment of oesophagogastric junction (OGJ) cancer is controversial. A randomized clinical trial (JCOG9502) comparing transhiatal (TH) and left thoracoabdominal (LTA) approaches was stopped…

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Negative / Null Result ReportOpen accessMedicine

Depletion of Tumor-Associated Macrophages with a CSF-1R Kinase Inhibitor Enhances Antitumor Immunity and Survival Induced by DC Immunotherapy

Floris Dammeijer, Lysanne A. Lievense, Margaretha E. Kaijen-Lambers et al. · 2017 · Cancer Immunology Research

Abstract New immunotherapeutic strategies are needed to induce effective antitumor immunity in all cancer patients. Malignant mesothelioma is characterized by a poor prognosis and resistance to conventional therapies. Infiltration of…

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Negative / Null Result ReportOpen accessMedicine

The CCTG PA.7 phase II trial of gemcitabine and nab-paclitaxel with or without durvalumab and tremelimumab as initial therapy in metastatic pancreatic ductal adenocarcinoma

Daniel J. Renouf, Jonathan M. Loree, Jennifer J. Knox et al. · 2022 · Nature Communications

Immunotherapy-based monotherapy treatment in metastatic pancreatic ductal adenocarcinoma (mPDAC) has shown limited benefit outside of the mismatch repair deficiency setting, while safety and efficacy of combining dual-checkpoint inhibitor immunotherapy with chemotherapy remains uncertain. Here, we present results from the CCTG PA.7 study (NCT02879318), a randomized phase II trial comparing gemcitabine and nab-paclitaxel with and without immune checkpoint inhibitors durvalumab and tremelimumab in 180 patients with mPDAC. The primary endpoint was overall survival. Secondary endpoints included pr

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