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Browse the failure-mode index

12,231 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 ReportOpen accessMedicine

Fatty acid amide hydrolase binding is inversely correlated with amygdalar functional connectivity: a combined positron emission tomography and magnetic resonance imaging study in healthy individuals

Duncan G.J. Green, Jinhee Kim, Stephen J. Kish et al. · 2021 · Journal of Psychiatry and Neuroscience

Background: Upregulation of the endocannabinoid enzyme fatty acid amide hydrolase (FAAH) has been linked to abnormal activity in frontoamygdalar circuits, a hallmark of posttraumatic stress disorder. We tested the hypothesis that FAAH…

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Negative / Null Result ReportOpen accessMedicine

Significant differences in T cell receptor repertoires in lung adenocarcinomas with and without epidermal growth factor receptor mutations

Eisaku Miyauchi, Tatsuo Matsuda, Kazuma Kiyotani et al. · 2018 · Cancer Science

Recent clinical trials of non-small cell lung cancer with immune checkpoint inhibitors revealed that patients with epidermal growth factor receptor (EGFR) mutations had more unfavorable outcomes compared with those with wild-type EGFR.…

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Negative / Null Result ReportOpen accessMedicine

Performance of arthroscopic irrigation systems assessed with automatic blood detection

Gabriëlle J. M. Tuijthof, M. M. de Vaal, I. N. Sierevelt et al. · 2011 · Knee Surgery Sports Traumatology Arthroscopy

PURPOSE: During arthroscopies, bleeding episodes occur as a result of tissue damage. Irrigation systems assist in minimizing these disturbances. The performance of three arthroscopic irrigation systems in clearing bleeding episodes was…

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Negative / Null Result ReportOpen accessMedicine

Guapiaçu virus, a new insect-specific flavivirus isolated from two species of Aedes mosquitoes from Brazil

Geovani de Oliveira Ribeiro, Antônio Charlys da Costa, Danielle Elise Gill et al. · 2021 · Scientific Reports

Classical insect-flaviviruses (cISFVs) and dual host-related insect-specific flavivirus (dISFV) are within the major group of insect-specific flavivirus. Remarkably dISFV are evolutionarily related to some of the pathogenic flavivirus, such as Zika and dengue viruses. The Evolutionary relatedness of dISFV to flavivirus allowed us to investigate the evolutionary principle of host adaptation. Additionally, dISFV can be used for the development of flavivirus vaccines and to explore underlying principles of mammalian pathogenicity. Here we describe the genetic characterization of a novel putative

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Negative / Null Result ReportOpen accessMedicine

Barriers to Participation in a Community-Based Program to Control Transmission of Taenia solium in Peru

Michelle Beam, Angela G. Spencer, Lauralee Fernandez et al. · 2018 · American Journal of Tropical Medicine and Hygiene

larvae (neurocysticercosis) is a leading cause of preventable epilepsy worldwide. Effective and sustainable strategies to control parasite transmission in rural endemic communities are needed to prevent the disease. Surveillance and…

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Negative / Null Result ReportOpen accessMedicine

Significant Association of Serum Adiponectin and Creatine Kinase-MB Levels in ST-Segment Elevation Myocardial Infarction

Tomoaki Natsukawa, Norikazu Maeda, Shiro Fukuda et al. · 2017 · Journal of Atherosclerosis and Thrombosis

AIMS: Adiponectin, an adipocyte-specific secretory protein, abundantly exists in the blood stream while its concentration paradoxically decreases in obesity. Hypoadiponectinemia is one of risks of cardiovascular diseases. However, impact…

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Negative / Null Result ReportOpen accessMedicine

Treatment with the copper compound CuATSM has no significant effect on motor neuronal pathology in patients with ALS

Yue Yang, Dominic B. Rowe, Heather McCann et al. · 2023 · Neuropathology and Applied Neurobiology

AIMS: Although the orally available brain-penetrant copper compound CuATSM has demonstrated promising effects in SOD1-linked mouse models, the impact of CuATSM on disease pathology in patients with amyotrophic lateral sclerosis (ALS) remains unknown. METHODS: The present study set out to address this deficit by performing the first pilot comparative analysis of ALS pathology in patients that had been administered CuATSM and riluzole [N = 6 cases composed of ALS-TDP (n = 5) and ALS-SOD1 (n = 1)] versus riluzole only [N = 6 cases composed of ALS-TDP (n = 4) and ALS-SOD1 (n = 2)]. RESULTS: Our re

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Negative / Null Result ReportOpen accessMedicine

The American Association for the Surgery of Trauma renal injury grading scale: Implications of the 2018 revisions for injury reclassification and predicting bleeding interventions

Sorena Keihani, Douglas Rogers, Bryn Putbrese et al. · 2019 · The Journal of Trauma: Injury, Infection, and Critical Care

BACKGROUND: In 2018, the American Association for the Surgery of Trauma (AAST) published revisions to the renal injury grading system to reflect the increased reliance on computed tomography scans and non-operative management of high-grade…

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Negative / Null Result ReportOpen accessMedicine

Neural protein gamma-synuclein interacting with androgen receptor promotes human prostate cancer progression

Junyi Chen, Jiao Li, Chuanliang Xu et al. · 2012 · BMC Cancer

BACKGROUND: Gamma-synuclein (SNCG) has previously been demonstrated to be significantly correlated with metastatic malignancies; however, in-depth investigation of SNCG in prostate cancer is still lacking. In the present study, we evaluated the role of SNCG in prostate cancer progression and explored the underlying mechanisms. METHODS: First, alteration of SNCG expression in LNCaP cell line to test the ability of SNCG on cellular properties in vitro and vivo whenever exposing with androgen or not. Subsequently, the Dual-luciferase reporter assays were performed to evaluate whether the role of

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Negative / Null Result ReportOpen accessMedicine

Machine learning prediction model of acute kidney injury after percutaneous coronary intervention

Toshiki Kuno, Takahisa Mikami, Yuki Sahashi et al. · 2022 · Scientific Reports

Acute kidney injury (AKI) after percutaneous coronary intervention (PCI) is associated with a significant risk of morbidity and mortality. The traditional risk model provided by the National Cardiovascular Data Registry (NCDR) is useful for predicting the preprocedural risk of AKI, although the scoring system requires a number of clinical contents. We sought to examine whether machine learning (ML) techniques could predict AKI with fewer NCDR-AKI risk model variables within a comparable PCI database in Japan. We evaluated 19,222 consecutive patients undergoing PCI between 2008 and 2019 in a Ja

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Negative / Null Result ReportOpen accessMedicine

Cystatin C– and Creatinine-Based Estimates of Renal Function and Their Value for Risk Prediction in Patients with Acute Coronary Syndrome: Results from the PLATelet Inhibition and Patient Outcomes (PLATO) Study

Axel Åkerblom, Lars Wallentin, Anders Larsson et al. · 2013 · Clinical Chemistry

BACKGROUND: The estimated glomerular filtration rate (eGFR) independently predicts cardiovascular death or myocardial infarction (MI) and can be estimated by creatinine and cystatin C concentrations. We evaluated 2 different cystatin C…

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Negative / Null Result ReportOpen accessMedicine

The COMPARE head-to-head, randomized controlled trial of SEL-212 (pegadricase plus rapamycin-containing nanoparticle, ImmTOR™) versus pegloticase for refractory gout

Herbert S. B. Baraf, Puja Khanna, Alan Kivitz et al. · 2023 · Lara D. Veeken

OBJECTIVES: Serum urate (SU) lowering with PEGylated uricases in gout can reduce flares and tophi. However, treatment-emergent anti-drug antibodies adversely affect safety and efficacy and the currently approved PEGylated uricase…

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Negative / Null Result ReportOpen accessMedicine

Minimizing pre- and post-shock pauses during the use of an automatic external defibrillator by two different voice prompt protocols. A randomized controlled trial of a bundle of measures

Stefanie G. Beesems, Jocelyn Berdowski, Michiel Hulleman et al. · 2016 · Resuscitation

BACKGROUND: Previous large retrospective analyses have found an association between duration of peri-shock pauses in cardiopulmonary resuscitation (CPR) and survival. In a randomized trial, we tested whether shortening these pauses…

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Negative / Null Result ReportOpen accessMedicine

Signal transducer and activator of transcription 1 (STAT‐1) plays a critical role in control of Trypanosoma cruzi infection

Manjusha Kulkarni, Sanjay Varikuti, César Terrazas et al. · 2014 · Immunology

The control of Trypanosoma cruzi infection is related to interferon-γ (IFN-γ) activation leading to intracellular clearance of parasites. The transcription factor signal transducer and activator of transcription 1 (STAT-1) is a key…

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Negative / Null Result ReportOpen accessMedicine

Combining naproxen and a dual amylin and calcitonin receptor agonist improves pain and structural outcomes in the collagen-induced arthritis rat model

Anna Katri, Aneta Dąbrowska, Henrik Löfvall et al. · 2019 · Arthritis Research & Therapy

BACKGROUND: Pain is a debilitating symptom of rheumatoid arthritis (RA), caused by joint inflammation and cartilage and bone destruction. Nonsteroidal anti-inflammatory drugs (NSAIDs) are used to treat pain and inflammation in RA, but are not disease-modifying and do not prevent joint destruction when administered alone. KBPs (Key Bioscience peptides) are synthetic peptides based on salmon calcitonin and are expected to inhibit bone resorption and to be chondroprotective. In this study, we investigated if combining a standard of care NSAID (naproxen) with a KBP resulted in improvement in pain

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Negative / Null Result ReportOpen accessMedicine

No significant difference found in PET/MRI CBF values reconstructed with CT-atlas-based and ZTE MR attenuation correction

Hidehiko Okazawa, Tetsuya Tsujikawa, Yoshifumi Higashino et al. · 2019 · EJNMMI Research

Accurate attenuation correction (AC) is one of the most important issues to be addressed in quantitative brain PET/MRI imaging. Atlas-based MRI AC (AB-MRAC), one of the representative MRAC methods, has been used to estimate the skull attenuation in brain scans. The zero echo time (ZTE) pulse sequence is also expected to provide a better MRAC estimation in brain PET scans. The difference in quantitative measurements of cerebral blood flow (CBF) using H215O-PET/MRI was compared between the two MRAC methods, AB and ZTE. Twelve patients with cerebrovascular disease (4 males, 43.2 ± 11.7 years) und

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Negative / Null Result ReportOpen accessMedicine

Genome‐wide association study identifies loci associated with liability to alcohol and drug dependence that is associated with variability in reward‐related ventral striatum activity in African‐ and European‐Americans

Leah Wetherill, Dongbing Lai, Emma C. Johnson et al. · 2019 · Genes Brain & Behavior

Abstract Genetic influences on alcohol and drug dependence partially overlap, however, specific loci underlying this overlap remain unclear. We conducted a genome‐wide association study (GWAS) of a phenotype representing alcohol or illicit…

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Negative / Null Result ReportOpen accessMedicine

Switch to low-fat diet improves outcome of acute lymphoblastic leukemia in obese mice

Jonathan Tucci, Waseem Alhushki, Ting Chen et al. · 2018 · Cancer & Metabolism

BACKGROUND: It is becoming increasingly recognized that weight and nutritional status can impact cancer survival. We have previously shown that obese mice with syngeneic acute lymphoblastic leukemia (ALL) have poorer response to chemotherapy treatment than control mice. We therefore investigated whether dietary intervention could improve outcome from the most common pediatric cancer, ALL. METHODS: Diet-induced obese (DIO) mice raised on a 60% calories from fat diet and control mice were implanted with syngeneic ALL cells. Some DIO mice were switched to the low-fat control diet. Survival from A

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Negative / Null Result ReportOpen accessMedicine

Design of a multicenter randomized clinical trial for treatment of Alcohol-Associated Hepatitis

Wanzhu Tu, Samer Gawrieh, Srinivasan Dasarathy et al. · 2023 · Contemporary Clinical Trials Communications

Background: Mortality is high for severe alcohol-associated hepatitis (AH). Corticosteroids are the standard of care for patients without contraindications. Recent data showed that interleukin-1β receptor antagonist anakinra attenuated…

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Negative / Null Result ReportOpen accessMedicine

Predicting vaginal birth after previous cesarean: Using machine‐learning models and a population‐based cohort in Sweden

Charlotte Lindblad Wollmann, Kyle D. Hart, Can Liu et al. · 2020 · Acta Obstetricia Et Gynecologica Scandinavica

INTRODUCTION: Predicting a woman's probability of vaginal birth after cesarean could facilitate the antenatal decision-making process. Having a previous vaginal birth strongly predicts vaginal birth after cesarean. Delivery outcome in…

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Negative / Null Result ReportOpen accessMedicine

Cost–Utility Analysis of Deferiprone for the Treatment of β-Thalassaemia Patients with Chronic Iron Overload: A UK Perspective

Anthony Bentley, Samantha Gillard, Michael Spino et al. · 2013 · PharmacoEconomics

BACKGROUND: Patients with β-thalassaemia major experience chronic iron overload due to regular blood transfusions. Chronic iron overload can be treated using iron-chelating therapies such as desferrioxamine (DFO), deferiprone (DFP) and…

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Negative / Null Result ReportOpen accessMedicine

Little evidence for an effect of the rubber hand illusion on basic movement

Arran T. Reader, Victoria S. Trifonova, H. Henrik Ehrsson · 2021 · European Journal of Neuroscience

Body ownership refers to the distinct sensation that our observed body belongs to us, which is believed to stem from multisensory integration. This is commonly shown through the rubber hand illusion (RHI), which induces a sense of ownership over a false limb. Whilst the RHI may interfere with object-directed action and alter motor cortical activity, it is not yet clear whether a sense of ownership over an artificial hand has functional consequences for movement production per se. As such, we performed two motion-tracking experiments (n = 117) to examine the effects of the RHI on the reaction t

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Negative / Null Result ReportOpen accessMedicine

Replication and Heritability of Prostate Cancer Risk Variants: Impact of Population-Specific Factors

Victor Virlogeux, Rebecca E. Graff, Thomas J. Hoffmann et al. · 2015 · Cancer Epidemiology Biomarkers & Prevention

BACKGROUND: Prostate cancer incidence and mortality rates vary across populations, with African American men exhibiting the highest rates. To date, genome-wide association studies have identified 104 SNPs independently associated with…

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Negative / Null Result ReportOpen accessMedicine

Variants Associated with the Ankle Brachial Index Differ by Hispanic/Latino Ethnic Group: a genome-wide association study in the Hispanic Community Health Study/Study of Latinos

Tamar Sofer, Leslie S. Emery, Deepti Jain et al. · 2019 · Scientific Reports

Abstract Lower extremity peripheral artery disease (PAD) burden differs by race/ethnicity. Although familial aggregation and heritability studies suggest a genetic basis, little is known about the genetic susceptibility to PAD, especially in non-European descent populations. Genome-wide association studies (GWAS) of the ankle brachial index (ABI) and PAD (defined as an ABI < 0.90) have not been conducted in Hispanics/Latinos. We performed a GWAS of PAD and the ABI in 7,589 participants aged >45 years from the Hispanic Community Health Study/Study of Latinos (HCHS/SOL). We also performed

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Failed Experiment ReportOpen accessMedicine

Respiratory Insufficiency Correlated Strongly with Mortality of Rodents Infected with West Nile Virus

John D. Morrey, Venkatraman Siddharthan, Hong Wang et al. · 2012 · PLoS ONE

West Nile virus (WNV) disease can be fatal for high-risk patients. Since WNV or its antigens have been identified in multiple anatomical locations of the central nervous system of persons or rodent models, one cannot know where to investigate the actual mechanism of mortality without careful studies in animal models. In this study, depressed respiratory functions measured by plethysmography correlated strongly with mortality. This respiratory distress, as well as reduced oxygen saturation, occurred beginning as early as 4 days before mortality. Affected medullary respiratory control cells may

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Negative / Null Result ReportOpen accessMedicine

Dose-escalated intensity-modulated radiotherapy and irradiation of subventricular zones in relation to tumor control outcomes of patients with glioblastoma multiforme

Melvin L.K. Chua, Grace Kusumawidjaja, Patricia Gan et al. · 2016 · OncoTargets and Therapy

BACKGROUND: Glioblastoma multiforme (GBM) is the most aggressive primary brain tumor with high relapse rate. In this study, we aimed to determine if dose-escalated (DE) radiotherapy improved tumor control and survival in GBM patients.…

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Negative / Null Result ReportOpen accessMedicine

Pharmacologic thromboprophylaxis in adult patients undergoing neurosurgical interventions for preventing venous thromboembolism

Juan José Yepes-Núñez, Anita Rajasekhar, Maryam Rahman et al. · 2020 · Blood Advances

The impact of pharmacologic prophylaxis for venous thromboembolism in patients undergoing neurosurgical intervention remains uncertain. We reviewed the efficacy and safety of pharmacologic compared with nonpharmacologic thromboprophylaxis…

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