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19,814 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 accessEnvironmental Science

Predicting microbial community structure and temporal dynamics by using graph neural network models

Kasper Skytte Andersen, Kai Zhao, Alexander de Linde Agerskov et al. · 2025 · Nature Communications

Understanding species-level abundance dynamics in complex microbial communities is key to managing microbial ecosystems, yet it remains a major challenge. In wastewater treatment plants (WWTPs), the presence and abundance of…

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Negative / Null Result ReportOpen accessEconomics, Econometrics and Finance

Artificial Intelligence Adoption and Role of Energy Structure, Infrastructure, Financial Inclusions, and Carbon Emissions: Quantile Analysis of E-7 Nations

Shanwen Gu, Adil Javed · 2025 · Sustainability

The E-7 nations face significant challenges in harmonizing artificial intelligence (AI) adoption with sustainable economic and environmental goals. While AI holds transformative potential to revolutionize energy structures, modernize infrastructure, broaden financial inclusion, and reduce carbon emissions, its effective integration is frequently hindered by policy inertia, economic limitations, and long-standing institutional barriers. Using the multi-level perspective (MLP), this study employs the method of moments quantile regression (MMQREG) on panel data from 2004 to 2024 to investigate th

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Negative / Null Result ReportOpen accessImmunology and Microbiology

Dendritic cell progenitors engineered to express extracellular-vesicle–internalizing receptors enhance cancer immunotherapy in mouse models

Ali Ghasemi, Amaia Martínez-Usatorre, Yang Liu et al. · 2025 · Nature Communications

Cancer immunotherapy using dendritic cells (DC) pulsed ex vivo with tumour antigens is considered safe, but its clinical efficacy is generally modest. Here we engineer DC progenitors (DCP), which can replenish conventional type 1 DCs…

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Negative / Null Result ReportOpen accessImmunology and Microbiology

A Nationwide Evaluation of Antibiotic Consumption in Kazakhstan from 2019 to 2023

Yuliya Semenova, Ademi Yergaliyeva, Ainur Aimurziyeva et al. · 2024 · Antibiotics

BACKGROUND/OBJECTIVES: There has been a lack of a holistic approach to evaluating antibiotic consumption in Kazakhstan over the past few years using an internationally recognized methodology. Therefore, this study aimed to provide a nationwide evaluation of antibiotic consumption in Kazakhstan during the period 2019-2023. METHODS: Defined daily doses per 1000 inhabitants per day (DIDs) were calculated for systemic antibiotics (J01 code of the Anatomical Therapeutic Chemical Classification System (ATC)) following the methodology established by the Global Antimicrobial Resistance and Use Surveil

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Negative / Null Result ReportOpen accessPhysics and Astronomy

Very Bright, Very Blue, and Very Red: JWST CAPERS Analysis of Highly Luminous Galaxies with Extreme Ultraviolet Slopes at z = 10

Callum T. Donnan, Mark Dickinson, Anthony J. Taylor et al. · 2025 · The Astrophysical Journal

Abstract We present JWST/NIRSpec PRISM observations of three luminous ( M UV < −20) galaxies at z ∼ 10 observed with the CANDELS-Area Prism Epoch of Reionization Survey (CAPERS) Cycle 3 program. These galaxies exhibit extreme UV slopes compared to typical galaxies at z = 10. Of the three sources, two of them are a close pair (0 . ″ 22) of blue galaxies at z = 9.800 ± 0.003 and z = 9.808 ± 0.002 with UV slopes of β = −2.87 ± 0.15 and β = −2.46 ± 0.10, respectively, selected from PRIMER COSMOS NIRCam imaging. We perform spectrophotometric modeling of the galaxies, which suggests extre

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Negative / Null Result ReportOpen accessSocial Sciences

Sustaining Exposure to Fact-Checks: Misinformation Discernment, Media Consumption, and Its Political Implications

Jeremy Bowles, Kevin Croke, Horacio Larreguy et al. · 2025 · American Political Science Review

Exposure to misinformation can affect citizens’ beliefs, political preferences, and compliance with government policies. However, little is known about how to durably reduce susceptibility to misinformation, particularly in the Global South. We evaluate an intervention in South Africa that encouraged individuals to consume biweekly fact-checks—as text messages or podcasts—via WhatsApp for six months. Sustained exposure to these fact-checks induced substantial internalization of fact-checked content, while increasing participants’ ability to discern new political and health misinformation upon

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Negative / Null Result ReportOpen accessMedicine

Holding vs Continuing GLP-1/GIP Agonists Before Upper Endoscopy

Akram I. Ahmad, Samita Garg, Jeffrey Jacobs et al. · 2026 · JAMA Internal Medicine

Importance: Glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP) are known to increase the risk of retained gastric contents. High-quality data are lacking to guide periprocedure management of GLP-1 and GIP agonists. Objective: To compare the risk of clinically significant residual gastric volume (RGV) in patients who continue vs hold 1 dose of weekly or daily GLP-1 and GIP agonists prior to sedation. Design, Setting, and Participants: This randomized, single-masked clinical trial conducted at 2 large tertiary referral centers in the US included patients under

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Negative / Null Result ReportOpen accessAgricultural and Biological Sciences

Diversity of adapted tobacco microbial community and its application in improving tobacco quality

Jing Mai, Ying Ning, Zhonglong Lin et al. · 2025 · Industrial Crops and Products

Many bacteria such as Bacillus , Pseudomonas , and Lactobacillus are widely present in flue-cured tobacco leaves during the aging process, indicating they play important roles in improving tobacco quality. In this study, we aimed to screen…

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Negative / Null Result ReportOpen accessNeuroscience

Higher visual areas act like domain-general filters with strong selectivity and functional specialization

Meenakshi Khosla, Leila Wehbe · 2026 · Nature Communications

Neuroscientific studies rely heavily on a-priori hypotheses, which can bias results toward existing theories. Here, we use a hypothesis-neutral approach to study category selectivity in higher visual cortex. Using only stimulus images and their associated fMRI activity, we constrain randomly initialized neural networks to predict voxel activity. Despite no category-level supervision, units in the trained networks act as detectors for semantic concepts like 'faces' or 'words', providing solid empirical support for categorical selectivity. Importantly, this selectivity is mostly maintained when

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Negative / Null Result ReportOpen accessPharmacology, Toxicology and Pharmaceutics

Engineered Novel Brijaluronic Terpesomes for Brain-Targeted Quercetin Delivery: Optimization, Ex Vivo and Radiokinetics

Sadek Ahmed, Khaled M. Attallah, Marwa Eid Sayyed · 2026 · AAPS PharmSciTech

Abstract This research focuses on creating a novel Brijaluronic-based terpesomal system capable of transporting quercetin (QER) efficiently to the brain. The vesicles were fabricated through an ethanol-injection method and then refined using a structured optimization approach in Design-Expert® software. The influence of three main formulation parameters: terpene-to-drug ratio, surfactant type, and hyaluronic acid amount were evaluated. The optimization process was designed to maximize EE%, minimize VS, and maintain ZP within an acceptable stability range. The optimal formula hit a desirability

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Negative / Null Result ReportOpen accessBiochemistry, Genetics and Molecular Biology

The Road to Remyelination in Multiple Sclerosis: Breakthroughs, Challenges, and Considerations for Future Trial Design

Leah Zuroff, Vista Farkhondeh, Riley Bove et al. · 2025 · Drugs

Despite major advances in multiple sclerosis (MS) treatment, disability accumulation independent of relapse activity remains a significant challenge. Chronic demyelination is a key driver of neurodegeneration and disease progression,…

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Negative / Null Result ReportOpen accessBiochemistry, Genetics and Molecular Biology

Mitochondrial Dysfunction in Cardiomyopathy and Heart Failure: From Energetic Collapse to Therapeutic Opportunity

Nikola Pavlović, Petar Todorović, Mirko Maglica et al. · 2025 · Biomolecules

The heart’s relentless contractile activity depends critically on mitochondrial function to meet its extraordinary bioenergetic demands. Mitochondria, through oxidative phosphorylation, not only supply ATP but also regulate metabolism, calcium homeostasis, and apoptotic signaling, ensuring cardiomyocyte viability and cardiac function. Mitochondrial dysfunction is a hallmark of cardiomyopathies and heart failure, characterized by impaired oxidative phosphorylation, excessive production of reactive oxygen species (ROS), dysregulated calcium handling, and disturbances in mitochondrial dynamics an

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Negative / Null Result ReportOpen accessEnvironmental Science

Determining sources of groundwater salinity in the multi-layered aquifer system of the bengal delta, Bangladesh

Anwar Zahid, Md. Aminur Rahman, M. Rashidul Hassan et al. · 2026 · BRAC University Journal

The study area lies on the coastal belt of the Bengal Delta, southern Bangladesh. This study bas been condocted to deteonine salinity sources in the multi-layered aquifers of the Bengal Delta. Dissolved major ions including chloride (Cr) and brontide (Br) were measured in groundwater of the coastal areas of Bangladesh to assess the source(s) of salinity. Ionic concentrations of 48 groundwater samples were analyzed for this study; samples were collected from observation wells installed at different depths down to 336 m. The major ion trends of the upper (<200 m deep) Sodium (Na')-Chloride (C

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Negative / Null Result ReportOpen accessMedicine

Tirzepatide on obstructive sleep apnea-related cardiometabolic risk: secondary outcomes of the SURMOUNT-OSA randomized trial

Atul Malhotra, R GRUNSTEIN, Ali Azarbarzin et al. · 2026 · Nature Medicine

Obstructive sleep apnea (OSA) is associated with obesity and cardiovascular risk. The SURMOUNT-OSA master protocol comprised two, 52-week, randomized, double-blind, placebo-controlled phase 3 studies (study 1 and study 2) and demonstrated…

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Negative / Null Result Report

Pro-inflammatory response ensured by LPS and Pam3CSK4 in RAW 264.7 cells did not improve a fungistatic effect on Cryptococcus gattii infection

Gabriela Yamazaki de Campos, Raquel Amorim Oliveira, Patrícia Kellen Martins Oliveira-Brito et al. · 2020 · PeerJ

Background The macrophage lineage is characterized by plasticity due to the acquisition of distinct functional phenotypes, and two major subsets are evaluated; classical M1 activation (strong microbicidal activity) and alternative M2…

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Negative / Null Result Report

When do neural networks outperform kernel methods?*

Behrooz Ghorbani, Song Mei, Theodor Misiakiewicz et al. · 2021 · Journal of Statistical Mechanics: Theory and Experiment

Abstract For a certain scaling of the initialization of stochastic gradient descent (SGD), wide neural networks (NN) have been shown to be well approximated by reproducing kernel Hilbert space (RKHS) methods. Recent empirical work showed…

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Negative / Null Result Report

Prognostically Significant Myocardial Injury in Patients Undergoing Transcatheter Aortic Valve Replacement

Vikram Sharma, Tanujit Dey, Kesavan Sankaramangalam et al. · 2019 · Journal of the American Heart Association

Background Troponin elevation occurs commonly in the setting of transcatheter aortic valve replacement (TAVR). There is a lack of information on the extent of troponin elevation post TAVR that is prognostically significant. We assessed the…

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Negative / Null Result Report

Routine Diagnostics Confirm Novel Neurodevelopmental Disorders

Robin-Tobias Jauss, Sophia Schließke, Rami Abou Jamra · 2022 · Genes

Routine diagnostics is biased towards genes and variants with satisfactory evidence, but rare disorders with only little confirmation of their pathogenicity might be missed. Many of these genes can, however, be considered relevant,…

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Negative / Null Result Report

A Prospective Study of the Association Between Clinically Significant Bleeding in PICU Patients and Thrombocytopenia or Prolonged Coagulation Times*

Paul C. Moorehead, Nicholas J. Barrowman, Janelle Cyr et al. · 2017 · Pediatric Critical Care Medicine

Objective: There are no proven methods to predict the risk of clinically significant bleeding in the PICU. A retrospective study identified platelet count as a risk marker for clinically significant bleeding. We conducted a study to…

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Negative / Null Result Report

Significant effects on neonatal morbidity and mortality after regional change in management of post‐term pregnancy

CHARLOTTA GRUNEWALD, STELLAN HÅKANSSON, SISSEL SALTVEDT et al. · 2010 · Acta Obstetricia et Gynecologica Scandinavica

Abstract Objective. To evaluate the effects on neonatal morbidity of a regional change in induction policy for post‐term pregnancy from 43 +0 to 42 +0 gestational weeks (GWs). Design and setting. Nationwide retrospective register study…

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Negative / Null Result ReportEarth and Planetary Sciences

Tornadic Supercell Environments Analyzed Using Surface and Reanalysis Data: A Spatiotemporal Relational Data-Mining Approach

David John Gagne, Amy McGovern, Jeffrey B. Basara et al. · 2012 · Journal of Applied Meteorology and Climatology

Abstract Oklahoma Mesonet surface data and North American Regional Reanalysis data were integrated with the tracks of over 900 tornadic and nontornadic supercell thunderstorms in Oklahoma from 1994 to 2003 to observe the evolution of…

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Negative / Null Result ReportComputer Science

Significant Association Rule Mining with High Associability

Subrata Datta, Kalyani Mali · 2021

Traditional support-confidence framework based association rule mining approaches often generate huge number of rules including the insignificant ones. These insignificant association rules are useless in knowledge discovery. One of the…

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Negative / Null Result ReportOpen accessMedicine

Efficacy and safety of combination behavioral activation for smoking cessation and varenicline for treating tobacco dependence among individuals with current or past major depressive disorder: A 2 × 2 factorial, randomized, placebo‐controlled trial

Brian Hitsman, George D. Papandonatos, Jackie K. Gollan et al. · 2023 · Addiction

BACKGROUND AND AIMS: Treatment of depression-related psychological factors related to smoking behavior may improve rates of cessation among adults with major depressive disorder (MDD). This study measured the efficacy and safety of 12…

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Negative / Null Result ReportOpen accessComputer Science

Prediction of breast cancer survivability using ensemble algorithms

Vincent Adegoke, Daqing Chen, Ebad Banissi et al. · 2017

In this paper, several ensemble cancer survivability predictive models are presented and tested based on three variants of AdaBoost algorithm. In the models we used Random Forest, Radial Basis Function Network and Neural Network algorithms…

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