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Browse the failure-mode index

21,681 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

Nivolumab with or without ipilimumab in pediatric patients with high-grade CNS malignancies: Safety, efficacy, biomarker, and pharmacokinetics—CheckMate 908

Ira J. Dunkel, François Doz, Nicholas K. Foreman et al. · 2023 · Neuro-Oncology

BACKGROUND: Therapeutic options are limited in pediatric CNS malignancies. CheckMate 908 (NCT03130959) is an open-label, sequential-arm, phase 1b/2 study investigating nivolumab (NIVO) and NIVO + ipilimumab (IPI) in pediatric patients with…

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Negative / Null Result ReportOpen accessBiochemistry, Genetics and Molecular Biology

Clinicopathological significance of PTEN and bcl2 expressions in oral squamous cell carcinoma.

Arshad Husain Rahmani, Mohammad A. Alzohairy, Ali Yousif Babiker et al. · 2012 · PubMed

A high frequency of mutations at the PTEN locus has been noticed in carcinoma of oral. However, the role of PTEN alternations and its association with outcome variables in the genesis of oral carcinoma is not understood fully. The purpose…

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Negative / Null Result ReportMedicine

A culturally sensitive Transition Assistance Program for stroke caregivers: Examining caregiver mental health and stroke rehabilitation

Paul B. Perrin, Andrew J. Johnston, Bruce Vogel et al. · 2010 · The Journal of Rehabilitation Research and Development

This study developed and implemented the Transition Assistance Program (TAP) for stroke caregivers. The program is composed of (1) skill development, (2) education, and (3) supportive problem solving. Sixty-one dyads (n = 122)…

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Negative / Null Result ReportOpen accessBiochemistry, Genetics and Molecular Biology

Complete loss of ATM function augments replication catastrophe induced by ATR inhibition and gemcitabine in pancreatic cancer models

Charles R. Dunlop, Yann Wallez, Timothy Isaac Johnson et al. · 2020 · British Journal of Cancer

BACKGROUND: Personalised medicine strategies may improve outcomes in pancreatic ductal adenocarcinoma (PDAC), but validation of predictive biomarkers is required. Having developed a clinical trial to assess the ATR inhibitor, AZD6738, in combination with gemcitabine (ATRi/gem), we investigated ATM loss as a predictive biomarker of response to ATRi/gem in PDAC. METHODS: Through kinase inhibition, siRNA depletion and CRISPR knockout of ATM, we assessed how ATM targeting affected the sensitivity of PDAC cells to ATRi/gem. Using flow cytometry, immunofluorescence and immunoblotting, we investigate

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Replication FailureOpen accessMedicine

A randomized, controlled study to investigate the efficacy and safety of a topical gentamicin-collagen sponge in combination with systemic antibiotic therapy in diabetic patients with a moderate or severe foot ulcer infection

Ilker Uçkay, Benjamin Kressmann, Sarah Malacarne et al. · 2018 · BMC Infectious Diseases

BACKGROUND: An adjunctive topical therapy with gentamicin-sponges to systemic antibiotic therapy might improve the healing of infected diabetic foot ulcers (DFUI). METHODS: Single-center, investigator-blinded pilot study, randomizing (1:1) the gentamicin-sponge with systemic antibiotic versus systemic antibiotics alone for patients with DFUI. RESULTS: We included 88 DFUI episodes with 43 patients in the gentamicin-sponge arm and 45 in the control arm. Overall, 64 (64/88; 73%) witnessed total clinical cure, 13 (15%) significant improvement, and 46 (52%) showed total eradication of all pathogens

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Negative / Null Result ReportOpen accessEarth and Planetary Sciences

Geospatial Distributions of Groundwater Quality in Gedaref State Using Geographic Information System (GIS) and Drinking Water Quality Index (DWQI)

Basheer A. Elubid, Tao Huang, Ekhlas H. Ahmed et al. · 2019 · International Journal of Environmental Research and Public Health

The observation of groundwater quality elements is essential for understanding the classification and distribution of drinking water. Geographic Information System (GIS) and remote sensing (RS), are intensive tools for the performance and analysis of spatial datum associated with groundwater sources control. In this study, groundwater quality parameters were observed in three different aquifers including: sandstone, alluvium and basalt. These aquifers are the primary source of national drinking water and partly for agricultural activity in El Faw, El Raha (Fw-Rh), El Qalabat and El Quresha (Qa

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Negative / Null Result ReportOpen accessMedicine

Replication of GWAS Associations for GAK and MAPT in Parkinson's Disease

Shannon Rhodes, Janet S. Sinsheimer, Yvette Bordelon et al. · 2010 · Annals of Human Genetics

In the investigation of disease aetiology, the genome-wide association study (GWAS) provides a hypothesis-free investigation of the broader human genome and, as with all scientific investigations, replication is essential to validate any…

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Negative / Null Result ReportMedicine

Femoral shaft bowing in the coronal plane has more significant effect on the coronal alignment of TKA than proximal or distal variations of femoral shape

Jong‐Min Kim, Soo-Heon Hong, Jong‐Min Kim et al. · 2014 · Knee Surgery Sports Traumatology Arthroscopy

PURPOSE: The aim of this study was to determine (1) variations in the shape of the proximal, middle, and distal femur in a series of Korean patients who had undergone total knee arthroplasty (TKA), (2) the preoperative relationship between…

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Negative / Null Result ReportOpen accessMedicine

Methotrexate in chronic-recurrent calcium pyrophosphate deposition disease: no significant effect in a randomized crossover trial

Axel Finckh, Geraldine M Mc Carthy, Anne Madigan et al. · 2014 · Arthritis Research & Therapy

INTRODUCTION: Calcium pyrophosphate deposition (CPPD) may cause severe arthropathy, major joint destruction and treatment options are limited. The aim of this study was to test the therapeutic efficacy of methotrexate (MTX) in chronic or recurrent CPPD arthropathy. METHODS: Patients with CPPD arthropathy were randomized to receive either weekly subcutaneous injections of 15 mg/week of MTX or placebo (PBO) for three months, in a double-blind, crossover randomized controlled trial. Inclusion criteria comprised definite CPPD disease, recurrent arthritis or persistent polyarthritis, and an insuffi

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Negative / Null Result ReportBiochemistry, Genetics and Molecular Biology

Patients with Slowly Proliferative Early Breast Cancer Have Low Five-Year Recurrence Rates in a Phase III Adjuvant Trial of Capecitabine

Joyce O’Shaughnessy, Hartmut Koeppen, Yuanyuan Xiao et al. · 2015 · Clinical Cancer Research

PURPOSE: We conducted a randomized phase III study to determine whether patients with early breast cancer would benefit from the addition of capecitabine (X) to a standard regimen of doxorubicin (A) plus cyclophosphamide (C) followed by…

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Negative / Null Result ReportOpen accessEnvironmental Science

Soil-Borne Bacterial Structure and Diversity Does Not Reflect Community Activity in Pampa Biome

Manoeli Lupatini, Afnan Khalil Ahmad Suleiman, Rodrigo Josemar Seminoti Jacques et al. · 2013 · PLoS ONE

The Pampa biome is considered one of the main hotspots of the world's biodiversity and it is estimated that half of its original vegetation was removed and converted to agricultural land and tree plantations. Although an increasing amount of knowledge is being assembled regarding the response of soil bacterial communities to land use change, to the associated plant community and to soil properties, our understanding about how these interactions affect the microbial community from the Brazilian Pampa is still poor and incomplete. In this study, we hypothesized that the same soil type from the s

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Failed Experiment ReportOpen accessEnvironmental Science

A Regularization Approach to Improve the Sequential Calibration of a Semidistributed Hydrological Model

Alban de Lavenne, Vazken Andréassian, Guillaume Thirel et al. · 2019 · Water Resources Research

Abstract In semidistributed hydrological modeling, sequential calibration usually refers to the calibration of a model by considering not only the flows observed at the outlet of a catchment but also the different gauging points inside the…

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Negative / Null Result ReportSocial Sciences

Nonstandard Work and Marital Instability: Evidence From the National Longitudinal Survey of Youth

Ariel Kalil, Kathleen M. Ziol‐Guest, Jodie Levin Epstein · 2010 · Journal of Marriage and the Family

This article replicated and extended Harriet Presser's (2000) investigation of the linkages between nonstandard work and marital instability. We reexplored this question using data from a sample of 2,893 newlywed couples from the National…

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Negative / Null Result ReportPsychology

Human Performance Benefits of The Automation Transparency Design Principle

Gyrd Skraaning, Greg A. Jamieson · 2019 · Human Factors The Journal of the Human Factors and Ergonomics Society

OBJECTIVE: Test the automation transparency design principle using a full-scope nuclear power plant simulator. BACKGROUND: Automation transparency is a long-held human factors design principle espousing that the responsibilities,…

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Failed Experiment ReportOpen accessMedicine

Lack of Protection Against Ebola Virus from Chloroquine in Mice and Hamsters

Darryl Falzarano, David Safronetz, Joseph Prescott et al. · 2015 · Emerging infectious diseases

The antimalarial drug chloroquine has been suggested as a treatment for Ebola virus infection. Chloroquine inhibited virus replication in vitro, but only at cytotoxic concentrations. In mouse and hamster models, treatment did not improve survival. Chloroquine is not a promising treatment for Ebola. Efforts should be directed toward other drug classes.

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Negative / Null Result ReportOpen accessPhysics and Astronomy

GWTC-4.0: Updating the Gravitational-wave Transient Catalog with Observations from the First Part of the Fourth LIGO–Virgo–KAGRA Observing Run

Adrian Abac, I. Abouelfettouh, F. Acernese et al. · 2026 · The Astrophysical Journal Letters

Abstract Version 4.0 of the Gravitational-Wave Transient Catalog (GWTC-4.0) adds new candidates detected by the LIGO, Virgo, and KAGRA observatories through the first part of the fourth observing run (O4a: 2023 May 24 15:00:00 to 2024 January 16 16:00:00 UTC) and a preceding engineering run. In these new data, we find 128 compact binary coalescence candidates that are identified by at least one of our search algorithms with a probability of astrophysical origin p astro ≥ 0.5 and that are not vetoed during event validation. We also provide detailed source property measurements for 86 of these t

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Negative / Null Result ReportSocial Sciences

Educational aspirations among ethnic minority youth in Brussels: Does the perception of ethnic discrimination in the labour market matter? A mixed-method approach

Céline Teney, Perrine Devleeshouwer, Laurie Hanquinet · 2013 · Ethnicities

Ethnic disparities in educational aspirations and choices are important to comprehend ethnic education inequality. Based on a mixed-method approach (3121 questionnaires and 40 interviews of pupils), this article investigates ethnic…

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Negative / Null Result ReportOpen accessEconomics, Econometrics and Finance

Is causality between globalization and energy consumption bidirectional or unidirectional in top and bottom globalized economies?

Muhammad Shahbaz, Mehmet Balcılar, Mantu Kumar Mahalik et al. · 2021 · International Journal of Finance & Economics

Abstract By using quarterly data over the period 1970Q1‐2017Q4, this paper examines the dynamic causal relationship between globalization and energy consumption by using rolling and recursive rolling Granger causality methods. This study…

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Replication FailurePharmacology, Toxicology and Pharmaceutics

Solvent‐Free Ball‐Milling Biginelli Reaction by Subcomponent Synthesis

Prasit Kumar Sahoo, Anima Bose, Prasenjit Mal · 2015 · European Journal of Organic Chemistry

Abstract We report here an understanding of systems chemistry on small molecules through covalent mechanochemistry. As a proof‐of‐concept, the multicomponent Biginelli reaction by subcomponent synthesis was considered as a model system.…

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Negative / Null Result ReportOpen accessComputer Science

The political preferences of LLMs

David Rozado · 2024 · PLoS ONE

I report here a comprehensive analysis about the political preferences embedded in Large Language Models (LLMs). Namely, I administer 11 political orientation tests, designed to identify the political preferences of the test taker, to 24 state-of-the-art conversational LLMs, both closed and open source. When probed with questions/statements with political connotations, most conversational LLMs tend to generate responses that are diagnosed by most political test instruments as manifesting preferences for left-of-center viewpoints. This does not appear to be the case for five additional base (i.

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Failed Experiment ReportOpen accessNeuroscience

The Reference of Proper Names: Testing Usage and Intuitions

Michael Devitt, Nicolas Porot · 2018 · Cognitive Science

Experiments on theories of reference have mostly tested referential intuitions. We think that experiments should rather be testing linguistic usage. Substantive Aim (I): to test classical description theories of proper names against usage…

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Negative / Null Result ReportOpen accessMedicine

Effects of dopamine on reinforcement learning and consolidation in Parkinson’s disease

John P Grogan, Demitra Tsivos, Laura Smith et al. · 2017 · eLife

Emerging evidence suggests that dopamine may modulate learning and memory with important implications for understanding the neurobiology of memory and future therapeutic targeting. An influential hypothesis posits that dopamine biases reinforcement learning. More recent data also suggest an influence during both consolidation and retrieval. Eighteen Parkinson's disease patients learned through feedback ON or OFF medication, with memory tested 24 hr later ON or OFF medication (4 conditions, within-subjects design with matched healthy control group). Patients OFF medication during learning decre

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Negative / Null Result ReportOpen accessNeuroscience

Resounding failure to replicate links between developmental language disorder and cerebral lateralisation

Alexander C. Wilson, Dorothy Bishop · 2018 · PeerJ

BACKGROUND: It has been suggested that failure to establish cerebral lateralisation may be related to developmental language disorder (DLD). There has been weak support for any link with handedness, but more consistent reports of associations with functional brain lateralisation for language. The consistency of lateralisation across different functions may also be important. We aimed to replicate previous findings of an association between DLD and reduced laterality on a quantitative measure of hand preference (reaching across the midline) and on language laterality assessed using functional t

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Negative / Null Result ReportOpen accessSocial Sciences

Flipped Classroom in Organic Chemistry Has Significant Effect on Students’ Grades

Caroline Cormier, Bruno Voisard · 2018 · Frontiers in ICT

The flipped classroom as a form of active pedagogy in post-secondary chemistry has been developed during the last 10 years and has been gaining popularity with instructors and students ever since. In the current paradigm in STEM (science, technology, engineering and mathematics) education, it is widely recognized that active learning has significant positive effects on students’ grades. Post-secondary organic chemistry is a difficult course for students and the traditional way of teaching does not foster students’ active involvement. Implementation of active pedagogy could increase students’ a

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