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Browse the failure-mode index

21,691 real negative results, null findings, and replication failures. 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

Physical activity for public health in the 21st century

Deborah Salvo, Inácio Crochemore-Silva, Andrea Wendt et al. · 2026 · Nature Medicine

With over 5 million attributed deaths per year, physical inactivity is a major global public health issue. Although the importance of physical activity is well recognized within the scope of obesity and cardiometabolic disease prevention…

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Negative / Null Result ReportOpen accessMaterials Science

Innovative Strategies to Overcome Stability Challenges of Single-Atom Nanozymes

Rong Guo, Qiuzheng Du, Yaping He et al. · 2026 · Nano-Micro Letters

Single-atom nanozymes (SAzymes) exhibit exceptional catalytic efficiency due to their maximized atom utilization and precisely modulated metal-carrier interactions, which have attracted significant attention in the biomedical field. However, stability issues may impede the clinical translation of SAzymes. This review provides a comprehensive overview of the applications of SAzymes in various biomedical fields, including disease diagnosis (e.g., biosensors and diagnostic imaging), antitumor therapy (e.g., photothermal therapy, photodynamic therapy, sonodynamic therapy, and immunotherapy), antim

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Negative / Null Result ReportOpen accessEconomics, Econometrics and Finance

Trade-offs and synergies when balancing economic growth and globalization for sustainable development goals achievement

Imre Fertő, Gábor Harangozó · 2025 · Scientific Reports

This study investigates the complex relationships between globalization, economic growth, urbanization, and ecological footprint in the context of advancing the United Nations Sustainable Development Goals (SDGs). Employing a club convergence framework, we evaluate global SDG Index from 2000 to 2023 for 149 countries with 3212 observations, identifying five converging clubs and one non-converging group. Our analysis demonstrates that higher GDP per capita and various dimensions of globalization positively impact SDG outcomes, whereas rapid urbanization and expansive ecological footprints exert

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Negative / Null Result ReportOpen accessMedicine

Organ-on-a-Chip Models of the Female Reproductive System: Current Progress and Future Perspectives

Pan Min, Huike Chen, Kai Deng et al. · 2025 · Micromachines

The female reproductive system represents a highly complex regulatory network governing critical physiological functions, encompassing reproductive capacity and endocrine regulation that maintains female physiological homeostasis. The in vitro simulation system provides a novel tool for biomedical research and can be used as physiological and pathological models to study the female reproductive system. Recent advances in this technology have evolved from 2D and 3D printing to organ-on-a-chip (OOC) and microfluidic systems, which has emerged as a transformative platform for modeling the female

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Negative / Null Result ReportOpen accessEngineering

Experimental Investigation of the Bearing-Deformation Behavior of Broken Rocks in Goafs Under Various Influencing Factors

Yue Zhao, Jiang Su, Zhengzhen An et al. · 2026 · Applied Sciences

Coal gangue is one of the most abundant solid wastes generated during coal mining. The use of coal gangue for underground backfilling is widely recognized as an effective approach to reducing waste accumulation and promoting sustainable utilization. To further investigate the bearing and deformation behavior of underground gangue filling materials, combined with the underground occurrence conditions of crushed gangue in goaf, a self-designed loading apparatus for crushed gangue was employed to perform lateral compression experiments on crushed gangue. The compaction deformation, fractal dimens

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Negative / Null Result ReportOpen accessPhysics and Astronomy

CHIME/Fast Radio Burst Discovery of an Unusual Circularly Polarized Long-period Radio Transient with an Accelerating Spin Period

Fengqiu Adam Dong, Kaitlyn Shin, Casey Law et al. · 2025 · The Astrophysical Journal Letters

Abstract We report the discovery of CHIME J1634+44, a long-period radio transient (LPT) unique for two aspects: it is the first known LPT to emit fully circularly polarized radio bursts, and it is the first LPT with a significant spin-up. Given that high circular polarization (>90%) has been observed in FRB 20201124A and in some giant pulses of PSR B1937+21, we discuss the implications of the high circular polarization of CHIME J1634+44 and conclude its emission mechanism is likely to be “pulsar-like.” While CHIME J1634+44 has a pulse period of 841 s, its burst arrival patterns are indicati

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Negative / Null Result ReportOpen accessMedicine

Rise of precision medicine: can it deliver on its promise in IBD?

Stefan Schreiber, Konrad Aden, Florian Tran et al. · 2025 · Gut

The clinical and molecular heterogeneity of IBD—both between patients and within the same individual over time—continues to pose a significant challenge to the implementation of truly personalised treatment strategies. Unlike oncology,…

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Negative / Null Result ReportOpen accessEconomics, Econometrics and Finance

Economic Growth, FDI, Tourism, and Agricultural Productivity as Drivers of Environmental Degradation: Testing the EKC Hypothesis in ASEAN Countries

Yuldoshboy Sobirov, Beruniy Artikov, Elbek Khodjaniyazov et al. · 2025 · Sustainability

This study examines the long-run relationship between carbon dioxide (CO2) emissions and key macroeconomic and sectoral drivers in ten ASEAN economies from 1995 to 2023. Employing Driscoll–Kraay standard errors, Prais–Winsten regression, heteroskedastic panel-corrected standard errors, Fully Modified Ordinary Least Squares (FMOLS), Dynamic Ordinary Least Squares (DOLS), and Canonical Cointegrating Regression (CCR) estimators, the analysis accounts for cross-sectional dependence, slope heterogeneity, and endogeneity. Results indicate that GDP exerts a more-than-unitary positive effect on emissi

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Negative / Null Result ReportOpen accessAgricultural and Biological Sciences

Invited Review: Inflammation and Health in the Transition Period Influence Reproductive Function in Dairy Cows

T.C. Bruinjé, S.J. LeBlanc · 2025 · Animals

In the early postpartum period, dairy cows undergo significant adaptations in Ca and lipid metabolism, immune function, and inflammatory processes. Concurrent exposure to endotoxins from the uterus, gastrointestinal tract, or mammary gland increases the risk of disease and reproductive problems. Metabolic and inflammatory imbalances during this phase can have both immediate and long-term effects on reproductive health. Associations between metabolic disorders and reproductive outcomes are often confounded by immune activation and systemic inflammation. However, optimal markers, thresholds, and

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Negative / Null Result ReportOpen accessMedicine

Safety and efficacy of valoctocogene roxaparvovec with prophylactic glucocorticoids: 1-year results from the phase 3b, single-arm, open-label GENEr8-3 study

Margareth C. Ozelo, Jane Mason, Amy L. Dunn et al. · 2025 · Journal of Thrombosis and Haemostasis

BACKGROUND: Valoctocogene roxaparvovec, an adeno-associated virus vector that transfers a human factor (F)VIII (FVIII) coding sequence to hepatocytes, provides bleeding protection for people with severe hemophilia A. OBJECTIVES: Determine…

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Negative / Null Result ReportOpen accessSocial Sciences

The Road to Stock Market Participation

Sumit Agarwal, Meghana Ayyagari, Yuxi Cheng et al. · 2026 · Management Science

This paper examines how infrastructure development affects stock market participation in India using trading data from more than 13 million individuals. Using the phased rollout of a national road construction program as a natural…

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Negative / Null Result ReportOpen accessNeuroscience

Electrophysiological indices of hierarchical speech processing differentially reflect the comprehension of speech in noise

Shyanthony R. Synigal, Andrew J. Anderson, Edmund C. Lalor · 2026 · eNeuro

ABSTRACT The past few years have seen an increase in the use of encoding models to explain neural responses to natural speech. The goal of these models is to characterize how the human brain converts acoustic energy into distinct linguistic representations that enable everyday speech comprehension. For example, researchers have shown that electroencephalography (EEG) data can be modeled in terms of acoustic features of speech, such as its amplitude envelope or spectrogram, linguistic features such as phonemes and phoneme probability, and higher-level linguistic features like context-based word

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Negative / Null Result ReportOpen accessPsychology

LLM-powered socially assistive robot-delivered cognitive behavioral therapy exercises: an exploratory study with university students

Mina Kian, Mingyu Zong, Katrin Fischer et al. · 2026 · Frontiers in Robotics and AI

Mental health is a significant healthcare challenge, and cognitive behavioral therapy (CBT) is a widely used therapeutic method for treating anxiety and depression. However, traditional CBT often requires access to trained clinicians and can be cost-prohibitive or logistically difficult for many individuals. To address these barriers, we developed a low-cost socially assistive robot (SAR) that uses a large language model (LLM) to guide the user through interactive at-home CBT exercises. In this exploratory study, 38 university students completed CBT exercises across a 15-day period using one o

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Negative / Null Result ReportOpen accessMathematics

Selecting the number of components in PCA via random signflips

David Hong, Yue Sheng, Edgar Dobriban · 2026 · Journal of the American Statistical Association

Principal component analysis (PCA) is a foundational tool in modern data analysis, and a crucial step in PCA is selecting the number of components to keep. However, classical selection methods (e.g., scree plots, parallel analysis, etc.)…

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Negative / Null Result ReportOpen accessMedicine

Therapeutic Potential of Calcium Channel Blockers in Neuropsychiatric, Endocrine and Pain Disorders

Aarish Manzar, Aleksandar Sič, Crystal E. Banh et al. · 2025 · Cells

Calcium channel blockers (CCBs), originally developed for cardiovascular indications, have gained attention for their therapeutic potential in neuropsychiatric, endocrine, and pain-related disorders. In neuropsychiatry, nimodipine and isradipine, both L-type CCBs, show mood-stabilizing and neuroprotective effects, with possible benefits in depression, bipolar disorder, and schizophrenia. In endocrinology, verapamil, a non-dihydropyridine L-type blocker, has been associated with the preservation of pancreatic β-cell function and reduced insulin dependence in diabetes. CCBs may also aid in manag

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Replication FailureOpen accessImmunology and Microbiology

Ixekizumab With or Without Tirzepatide in Adults With Psoriasis and Overweight or Obesity

M Lebwohl, Andrew Blauvelt, Cynthia E. Kartman et al. · 2026 · JAMA Dermatology

Importance: Overweight and obesity affect 60% to 78% of patients with psoriasis, affecting disease severity, treatment response, and clinical outcomes. However, no large, randomized, active-controlled clinical trial has evaluated a treatment strategy that addresses both diseases simultaneously. Objective: To evaluate the efficacy and safety of ixekizumab with or without tirzepatide in participants with psoriasis and overweight or obesity. Design, Setting, and Participants: This phase 3b, randomized, open-label, 52-week clinical trial was conducted at 72 sites in the US in adults with moderate

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Negative / Null Result ReportOpen accessPsychology

A matter of timing? Effects of parent–adolescent conflict on adolescent negative affect and depressive symptoms on six timescales.

Anne Bülow, Savannah Boele, Jessica P. Lougheed et al. · 2025 · Journal of Psychopathology and Clinical Science

= 14.37 years, 72% girls, 96% Dutch, data collection: 2019-2020) were used. By aggregating measurements, multiple timescales could be assessed within the same data set. Multilevel structural equation modeling revealed that conflict…

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Negative / Null Result ReportOpen accessMedicine

Anatomic Risk Factors for Initial and Secondary Noncontact Anterior Cruciate Ligament Injury: A Prospective Cohort Study in 880 Female Elite Handball and Soccer Players

Yusuke Kamatsuki, Marie Synnøve Qvale, Kathrin Steffen et al. · 2024 · The American Journal of Sports Medicine

Background: Anterior cruciate ligament (ACL) injury is one of the most severe injuries for athletes. It is important to identify risk factors because a better understanding of injury causation can help inform athletes about risk and increase their understanding of and motivation for injury prevention. Purpose: To investigate the relationship between anatomic factors and risk for future noncontact ACL injuries. Study Design: Cohort study; Level of evidence, 2. Methods: A total of 870, excluding 9 players with a new contact ACL injury and a player with a new noncontact ACL injury just before the

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Negative / Null Result ReportOpen accessComputer Science

Rapid Integration of LLMs in Healthcare Raises Ethical Concerns: An Investigation into Deceptive Patterns in Social Robots

Robert Ranisch, Joschka Haltaufderheide · 2025 · Digital Society

Abstract Conversational agents are increasingly used in healthcare, with Large Language Models (LLMs) significantly enhancing their capabilities. When integrated into social robots, LLMs offer the potential for more natural interactions. However, while LLMs promise numerous benefits, they also raise critical ethical concerns, particularly regarding hallucinations and deceptive patterns. In this case study, we observed a critical pattern of deceptive behavior in commercially available LLM-based care software integrated into robots. The LLM-equipped robot falsely claimed to have medication remin

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Negative / Null Result ReportOpen accessMedicine

Association of various insulin resistance surrogate indices with aging acceleration and future risk of cardiovascular disease in individuals with cardiovascular-kidney-metabolic syndrome stages 0–3: insights from CHARLS 2011–2020 data

Shu-Shu Han, Qin Liu, Zhiming Zeng et al. · 2026 · Cardiovascular Diabetology

BACKGROUND: Cardiovascular-kidney-metabolic (CKM) syndrome imposes a substantial global health burden, with most adults clustered in early stages 0-3. Insulin resistance (IR), as a core manifestation of metabolic dysfunction, is thought to…

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Negative / Null Result ReportOpen accessMedicine

Doxycycline Use in Adolescent Psychiatric Patients and Risk of Schizophrenia: An Emulated Target Trial

Ulla Lång, Johanna Metsälä, Hugh Ramsay et al. · 2025 · American Journal of Psychiatry

OBJECTIVE: As many as half of individuals who develop psychosis had attended child and adolescent psychiatric services at some stage in childhood, highlighting substantial opportunities for prevention within these services if an effective preventive intervention were identified. The authors hypothesized that adolescent psychiatric patients exposed to doxycycline, an antibiotic with putative neuroprotective properties, would have a lower risk of developing schizophrenia. METHODS: This was an emulated target trial using nationwide Finnish health register data on all individuals born between 1987

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Negative / Null Result ReportOpen accessBusiness, Management and Accounting

Public Employee Pensions and Municipal Insolvency

Sean Myers · 2026 · The Review of Economic Studies

Abstract This paper studies how municipal governments jointly manage spending, credit market borrowing, and a public employee pension system. I model governments as levered investors who must meet non-defaultable pension obligations and…

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Negative / Null Result ReportOpen accessMedicine

Cathepsins in Neurological Diseases

Dominik Lewandowski, Mateusz Konieczny, Agata Różycka et al. · 2025 · International Journal of Molecular Sciences

Cathepsins, a family of lysosomal proteases, play critical roles in maintaining cellular homeostasis through protein degradation and modulation of immune responses. In the central nervous system (CNS), their functions extend beyond classical proteolysis, influencing neuroinflammation, synaptic remodeling, and neurodegeneration. Emerging evidence underscores the crucial role of microglial cathepsins in the pathophysiology of several neurological disorders. This review synthesizes current knowledge on the involvement of cathepsins in a spectrum of CNS diseases, including Parkinson's disease, Alz

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Negative / Null Result ReportOpen accessMedicine

Microbiome modulation of tumorigenesis and immune responses

Yuning Chen, Ying Fang, Zibai Lyu et al. · 2026 · Journal of Biomedical Science

The microbiome has emerged as a critical, context-dependent regulator of tumorigenesis and anticancer immunity, capable of either promoting cancer progression or protecting against malignancy. This dual role is mediated by multiple interconnected mechanisms-including chronic inflammation, modulation of immune responses, and alterations in host metabolic signaling. These microbiome-cancer interactions vary across organs, influencing malignancies in the colon, breast, lung, and beyond. Clinically, the microbiome significantly affects patient responses to cancer therapies, particularly immunother

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Negative / Null Result ReportOpen accessBiochemistry, Genetics and Molecular Biology

Microbial diversification is maintained in an experimentally evolved synthetic community

Zahraa S. Al-tameemi, Alejandra Rodríguez‐Verdugo · 2024 · mSystems

ABSTRACT Microbial communities are incredibly diverse. Yet, the eco-evolutionary processes originating and maintaining this diversity remain understudied. Here, we investigate the patterns of diversification for Pseudomonas putida evolving in isolation and with Acinetobacter johnsonii leaking resources used by P. putida . We experimentally evolved four experimental replicates in monoculture and co-culture for 200 generations. We observed that P. putida diversified into two distinct morphotypes that differed from their ancestor by single-point mutations. One of the most prominent mutations hit

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Negative / Null Result ReportOpen accessNeuroscience

A single dorsal vagal complex circuit mediates the aversive and anorectic responses to GLP1R agonists

Warren T. Yacawych, Yi Wang, Guoxiang Zhou et al. · 2026 · Journal of Clinical Investigation

GLP-1 receptor agonists (GLP1RAs) effectively reduce feeding to treat obesity, although nausea and other aversive side effects of these drugs can limit their use. Brainstem circuits that promote satiation and mediate the physiological control of body weight can be distinguished from those that cause aversion. It remains unclear whether brainstem Glp1r neurons contribute to the normal regulation of energy balance and whether GLP1RAs control appetite via circuits distinct from those that mediate aversive responses, however. Here, we silenced Glp1r neurons in the nucleus of the solitary tract or

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Negative / Null Result ReportOpen accessAgricultural and Biological Sciences

Politizando el consumo alimentario: estrategias para avanzar en la transición agroecológica/ Politicizing Food Consumption: Strategies for Advancing in Agroecological Transition

Manuel González de Molina, Daniel López García, Gloria Guzmán Casado · 2026 · Redes

The starting point of this paper is the unfeasibility situation of the industrialized agriculture model and the dominant agro-food regime. Building a sustainable alternative is urgently needed. In the last decades, a great number of agroecological experiences have emerged which constitute, by their innovative character, the vanguard of an alternative agro-alimentary system. However, these experiences are not enough to produce a change to upper scales of social organization and even for their own survival as such experiences. The main challenge that Agroecology has raised is to upscaling the ag

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