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Browse the failure-mode index

19,786 real negative results, null findings, and replication failures · 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

Intracranial atherosclerosis and dementia

Jennifer L. Dearborn, Yiyi Zhang, Ye Qiao et al. · 2017 · Neurology

OBJECTIVE: To explore the association of intracranial atherosclerotic disease (ICAD) with mild cognitive impairment (MCI) and dementia. METHODS: From 2011 to 2013, 1,744 participants completed high-resolution vessel wall MRI from the…

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Negative / Null Result ReportOpen accessImmunology and Microbiology

Zoledronic acid impairs myeloid differentiation to tumour-associated macrophages in mesothelioma

Joris D. Veltman, Margaretha Lambers, Menno van Nimwegen et al. · 2010 · British Journal of Cancer

BACKGROUND: Suppressive immune cells present in tumour microenvironments are known to augment tumour growth and hamper efficacy of antitumour therapies. The amino-bisphosphonate Zoledronic acid (ZA) is considered as an antitumour agent, as…

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Negative / Null Result ReportMedicine

Obesity has no adverse effect on the outcome of unicompartmental knee replacement at a minimum follow-up of seven years

Étienne Cavaignac, V. Lafontan, Nicolas Reina et al. · 2013 · The Bone & Joint Journal

The significance of weight in the indications for unicompartmental knee replacement (UKR) is unclear. Our hypothesis was that weight does not affect the long-term rate of survival of UKRs. We undertook a retrospective study of 212 UKRs at…

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Negative / Null Result ReportOpen accessBiochemistry, Genetics and Molecular Biology

The performance of the Congruence Among Distance Matrices (CADM) test in phylogenetic analysis

Véronique Campbell, Pierre Legendre, François-Joseph Lapointe · 2011 · BMC Evolutionary Biology

BACKGROUND: CADM is a statistical test used to estimate the level of Congruence Among Distance Matrices. It has been shown in previous studies to have a correct rate of type I error and good power when applied to dissimilarity matrices and to ultrametric distance matrices. Contrary to most other tests of incongruence used in phylogenetic analysis, the null hypothesis of the CADM test assumes complete incongruence of the phylogenetic trees instead of congruence. In this study, we performed computer simulations to assess the type I error rate and power of the test. It was applied to additive dis

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Negative / Null Result ReportOpen accessSocial Sciences

The Impact of College Diversity on Behavior toward Minorities

Scott Carrell, Mark Hoekstra, James E. West · 2019 · American Economic Journal Economic Policy

This paper estimates the impact of racially diverse peers on white males’ subsequent behavior toward minorities. To overcome selection bias, we exploit data from the US Air Force Academy where students are randomly assigned to autonomous…

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Negative / Null Result ReportOpen accessBusiness, Management and Accounting

How Do Retirees Value Life Annuities? Evidence from Public Employees

John Chalmers, Jonathan Reuter · 2012 · Review of Financial Studies

Because life annuities can increase the level and decrease the volatility of lifetime consumption, economists have long been puzzled by the low demand for life annuities. One potential rational explanation is that adverse selection drives…

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Negative / Null Result ReportOpen accessMedicine

Patient Outcomes at Twelve Months after Early Decompressive Craniectomy for Diffuse Traumatic Brain Injury in the Randomized DECRA Clinical Trial

D. James Cooper, Jeffrey V. Rosenfeld, Lynnette Murray et al. · 2020 · Journal of Neurotrauma

Functional outcomes at 12 months were a secondary outcome of the randomized DECRA trial of early decompressive craniectomy for severe diffuse traumatic brain injury (TBI) and refractory intracranial hypertension. In the DECRA trial,…

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Negative / Null Result ReportMedicine

Impact of a collagen matrix on early healing, aesthetics and patient morbidity in oral mucosal wounds – a randomized study in humans

Daniel S. Thoma, Manuel Sancho‐Puchades, Dominik A. Ettlin et al. · 2011 · Journal Of Clinical Periodontology

AIM: To test whether a collagen matrix (CM) can improve early wound healing and aesthetics, and decrease wound sensitivity compared with spontaneous healing. METHODS: In 15 volunteers, 6-mm punch biopsies were harvested at both palatal…

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Negative / Null Result ReportOpen accessMedicine

Elevation of serum c‐reactive protein in patients with OAB and IC/BPS implies chronic inflammation in the urinary bladder

Shiu‐Dong Chung, Hsin‐Tzu Liu, Heng Lin et al. · 2011 · Neurourology and Urodynamics

AIMS: Chronic inflammation has been implicated in the development of overactive bladder (OAB) and interstitial cystitis/bladder pain syndrome (IC/BPS). An elevation of C-reactive protein (CRP) has been associated with chronic inflammation…

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Negative / Null Result ReportOpen accessMedicine

Determinants of Left Ventricular Mass in Patients on Hemodialysis

Christopher T. Chan, Tom Greene, Glenn M. Chertow et al. · 2012 · Circulation Cardiovascular Imaging

BACKGROUND: An increase in left ventricular mass (LVM) is associated with mortality and cardiovascular morbidity in patients with end-stage renal disease. METHODS AND RESULTS: The Frequent Hemodialysis Network (FHN) Daily Trial randomized…

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Negative / Null Result ReportOpen accessPsychology

Socioeconomic status and genetic influences on cognitive development

David Figlio, Jeremy Freese, Krzysztof Karbownik et al. · 2017 · Proceedings of the National Academy of Sciences

Accurate understanding of environmental moderation of genetic influences is vital to advancing the science of cognitive development as well as for designing interventions. One widely reported idea is increasing genetic influence on…

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Negative / Null Result ReportOpen accessBiochemistry, Genetics and Molecular Biology

Unfolded Protein Response in Cancer: IRE1α Inhibition by Selective Kinase Ligands Does Not Impair Tumor Cell Viability

Paul E. Harrington, Kaustav Biswas, David J. Malwitz et al. · 2014 · ACS Medicinal Chemistry Letters

The kinase/endonuclease inositol requiring enzyme 1 (IRE1α), one of the sensors of unfolded protein accumulation in the endoplasmic reticulum that triggers the unfolded protein response (UPR), has been investigated as an anticancer target.…

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Negative / Null Result ReportImmunology and Microbiology

Quantification of piscine reovirus (PRV) at different stages of Atlantic salmon Salmo salar production

Marie Løvoll, Marta Alarcón, Britt Bang Jensen et al. · 2012 · Diseases of Aquatic Organisms

The newly described piscine reovirus (PRV) appears to be associated with the development of heart and skeletal muscle inflammation (HSMI) in farmed Atlantic salmon Salmo salar L. PRV seems to be ubiquitous among fish in Norwegian salmon…

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Negative / Null Result ReportOpen accessNeuroscience

The Survival Advantage: Underlying Mechanisms and Extant Limitations

Stephanie A. Kazanas, Jeanette Altarriba · 2015 · Evolutionary Psychology

Recently, researchers have begun to investigate the function of memory in our evolutionary history. According to Nairne and colleagues (e.g., Nairne, Pandeirada, and Thompson, 2008; Nairne, Thompson, and Pandeirada, 2007), the best…

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Negative / Null Result ReportOpen accessDecision Sciences

Many Labs 5: Testing Pre-Data-Collection Peer Review as an Intervention to Increase Replicability

Charles R. Ebersole, Maya B. Mathur, Erica Baranski et al. · 2020 · Advances in Methods and Practices in Psychological Science

Replication studies in psychological science sometimes fail to reproduce prior findings. If these studies use methods that are unfaithful to the original study or ineffective in eliciting the phenomenon of interest, then a failure to…

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Negative / Null Result ReportOpen accessMedicine

Cetuximab: its unique place in head and neck cancer treatment

J. Vermorken, Pol Specenier · 2013 · Biologics

Head and neck cancer is the sixth most common cancer worldwide. At present, globally about 650,000 new cases of squamous cell carcinoma of the head and neck (SCCHN) are diagnosed each year. The epidermal growth factor receptor (EGFR) is…

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Negative / Null Result ReportOpen accessMedicine

Nonmetastatic Medulloblastoma of Early Childhood: Results From the Prospective Clinical Trial HIT-2000 and An Extended Validation Cohort

Martin Mynarek, Katja von Hoff, Torsten Pietsch et al. · 2020 · Journal of Clinical Oncology

PURPOSE The HIT-2000-BIS4 trial aimed to avoid highly detrimental craniospinal irradiation (CSI) in children < 4 years of age with nonmetastatic medulloblastoma by systemic chemotherapy, intraventricular methotrexate, and risk-adapted local radiotherapy. PATIENTS AND METHODS From 2001-2011, 87 patients received systemic chemotherapy and intraventricular methotrexate. Until 2006, CSI was reserved for nonresponse or progression. After 2006, local radiotherapy was introduced for nonresponders or patients with classic medulloblastoma (CMB) or large-cell/anaplastic medulloblastoma (LCA). DNA met

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Negative / Null Result ReportDentistry

Evaluation of Antioxidant Enzymes Activity and Malondialdehyde Levels in Patients With Chronic Periodontitis and Diabetes Mellitus

Shilpa Trivedi, Nand Lal, Abbas Ali Mahdi et al. · 2013 · Journal of Periodontology

BACKGROUND: The aim of this study is to investigate the impact of diabetes, a known risk factor for periodontitis, on activities of antioxidant enzymes superoxide dismutase (SOD), glutathione reductase (GR), and catalase (CAT) as well as…

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Negative / Null Result ReportMedicine

Rituximab treatment in patients with refractory inflammatory myopathies

E. Mahler, M. Blom, Nicol C. Voermans et al. · 2011 · Lara D. Veeken

OBJECTIVE: To assess the efficacy of rituximab on disease activity and muscle strength in patients with inflammatory myopathies refractory to conventional therapy. METHODS; Thirteen patients were treated with rituximab 1000 mg i.v., twice,…

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Negative / Null Result ReportOpen accessBiochemistry, Genetics and Molecular Biology

PAM50 proliferation score as a predictor of weekly paclitaxel benefit in breast cancer

Miguel Martín, Aleix Prat, Álvaro Rodríguez-Lescure et al. · 2013 · Breast Cancer Research and Treatment

To identify a group of patients who might benefit from the addition of weekly paclitaxel to conventional anthracycline-containing chemotherapy as adjuvant therapy of node-positive operable breast cancer. The predictive value of PAM50…

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Negative / Null Result ReportOpen accessChemistry

Quantitative, Time-Resolved Proteomic Analysis by Combining Bioorthogonal Noncanonical Amino Acid Tagging and Pulsed Stable Isotope Labeling by Amino Acids in Cell Culture

John D. Bagert, Yushu Joy Xie, Michael J. Sweredoski et al. · 2014 · Molecular & Cellular Proteomics

An approach to proteomic analysis that combines bioorthogonal noncanonical amino acid tagging (BONCAT) and pulsed stable isotope labeling with amino acids in cell culture (pSILAC) provides accurate quantitative information about rates of cellular protein synthesis on time scales of minutes. The method is capable of quantifying 1400 proteins produced by HeLa cells during a 30 min interval, a time scale that is inaccessible to isotope labeling techniques alone. Potential artifacts in protein quantification can be reduced to insignificant levels by limiting the extent of noncanonical amino acid t

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Negative / Null Result ReportOpen accessNeuroscience

Real-time brain-machine interface in non-human primates achieves high-velocity prosthetic finger movements using a shallow feedforward neural network decoder

Matthew S. Willsey, Samuel R. Nason, Scott R. Ensel et al. · 2022 · Nature Communications

Despite the rapid progress and interest in brain-machine interfaces that restore motor function, the performance of prosthetic fingers and limbs has yet to mimic native function. The algorithm that converts brain signals to a control signal for the prosthetic device is one of the limitations in achieving rapid and realistic finger movements. To achieve more realistic finger movements, we developed a shallow feed-forward neural network to decode real-time two-degree-of-freedom finger movements in two adult male rhesus macaques. Using a two-step training method, a recalibrated feedback intention

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Negative / Null Result ReportOpen accessBiochemistry, Genetics and Molecular Biology

Population Genetic Analyses of the Fungal Pathogen Colletotrichum fructicola on Tea-Oil Trees in China

Li He, Guoying Zhou, Junang Liu et al. · 2016 · PLoS ONE

The filamentous fungus Colletotrichum fructicola is found in all five continents and is capable of causing severe diseases in a number of economically important plants such as avocado, fig, cocoa, pear, and tea-oil trees. However, almost nothing is known about its patterns of genetic variation and epidemiology on any of its host plant species. Here we analyzed 167 isolates of C. fructicola obtained from the leaves of tea-oil tree Camellia oleifera at 15 plantations in seven Chinese provinces. Multilocus sequence typing was conducted for all isolates based on DNA sequences at fragments of four

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