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Browse the failure-mode index

12,263 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

Identifying early changes in imaging, plasma, and digital cognitive biomarkers that correspond to Alzheimer's disease pathology in the presence of autopsy-confirmed co-pathologies.

Chen CD, Aguero C, Melloni A et al. · 2026 · Alzheimer's & dementia : the journal of the Alzheimer's Association

Introduction Alzheimer's disease (AD) biomarkers are assessed on their ability to detect AD pathophysiology in vivo, with confirmation of AD neuropathology only at autopsy. Methods Positron emission tomography (PET), plasma, and cognitive…

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Negative / Null Result ReportMedicine

Expression patterns of risk genes associated with three evolutionarily relevant syndromes in rhesus macaque and human brains.

Karunakaran KB, Purushottam M, Balakrishnan N et al. · 2026 · Translational psychiatry

Depressive disorder (DD), Alzheimer's disease (AD), and schizophrenia (SZ) are evolutionarily relevant traits that disrupt neural networks supporting affect and cognition. While genome-wide association studies have identified risk-related…

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Negative / Null Result ReportMedicine

Quantification of retinal non-perfusion in eyes with diabetic retinopathy to study the association with retinal neovascularisation: INSPIRED study report 3.

Khalid H, Tsai WS, Lamanna F et al. · 2026 · The British journal of ophthalmology

Background/aims To characterise the distribution of retinal non-perfusion and its relationship with neovascularisation elsewhere (NVE) and visual acuity (VA) in referable diabetic retinopathy (DR) using ultra-widefield fluorescein…

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Negative / Null Result ReportMedicine

Measuring Cognitive Flexibility in Chinese Individuals with Obsessive-Compulsive Disorder: Psychometric Validation and Factor Structure of the Chinese Version of the Flexibility in Daily Life Scale.

Yan Z, Chen T, Ma X et al. · 2026 · Psychology research and behavior management

Purpose Impaired cognitive flexibility is a core feature of obsessive-compulsive disorder (OCD) and may contribute to symptom persistence and variabe therapeutic outcomes. However, traditional measures may adequately capture how cognitive…

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Short NoteOpen accessMedicine

Magnetic resonance imaging-induced artefact mimicking torsade de pointes in a patient with an implantable cardiac monitor: a case report.

Toyama Y, Taniguchi Y, Morisue M et al. · 2026 · European heart journal. Case reports

Background Magnetic resonance imaging (MRI) is increasingly performed in patients with cardiac implantable electronic devices. Although generally considered safe under specific protocols, electromagnetic interference may still lead to…

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Methods Dead-EndMedicine

Automation in the IVF laboratory in 2026: four technology domains, an asymmetric evidence base, and the case for parallel development with clinician-side automation.

Dirican EK · 2026 · Journal of assisted reproduction and genetics

Background Operator-dependent laboratory tasks-embryo selection, vitrification and warming, and intracytoplasmic sperm injection (ICSI)-have been the principal targets of IVF laboratory automation, and a fourth strand of work, integrated…

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Negative / Null Result ReportMedicine

Predictable modality transitions and meaningful stimuli facilitate sequential statistical learning between sensory modalities.

Pérez-Bellido A, Duato D, Giannelli F et al. · 2026 · Journal of experimental psychology. Learning, memory, and cognition

Statistical learning is the process of extracting regularities from the environment. Although sequential cross-modal regularities are ubiquitous (e.g., the sight of a falling ball followed by the sound of impact), previous research has…

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Negative / Null Result ReportMedicine

Between hope and uncertainty: the elusive evidence on hyperbaric oxygen therapy and radiotherapy.

Cuccia F, Cracchiolo AN, Piras A et al. · 2026 · Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer

Background Radiotherapy (RT) is a cornerstone in cancer management, but late radiation tissue injury (LRTI) remains a relevant clinical issue, affecting approximately 5% of patients and significantly impacting quality of life. Hyperbaric…

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Negative / Null Result ReportMedicine

A Review of Trials for Unsuccessful Pediatric Drug Development Programs Submitted to the US Food and Drug Administration 2015-2022.

Samuels S, Seaton M, Abdel-Rahman SM et al. · 2026 · Therapeutic innovation & regulatory science

Background Legislative initiatives have spurred an increase in pediatric drug development programs. However, some drug products studied in the pediatric population have not received an approved pediatric indication, and efforts have been…

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Negative / Null Result ReportOpen accessMedicine

Computer-navigated versus conventional total knee arthroplasty: no difference in implant survival at 15-year follow-up.

Longo G, Pacchiarotti G, Pizzigallo C et al. · 2026 · Journal of orthopaedic surgery and research

Introduction The introduction of computer-assisted navigation (CAS) in total knee arthroplasty (TKA) aimed to improve prosthetic alignment and potentially enhance long-term implant survival. However, the actual clinical benefit beyond 10…

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Negative / Null Result ReportMedicine

Assessment of intraoperative high frequency variability index as a predictor of postoperative pain after open liver or pancreatic surgery under combined general and epidural anesthesia: a prospective observational study.

Yoshida K, Hakozaki T, Hasegawa T et al. · 2025 · Journal of clinical monitoring and computing

The aim of the present study was to investigate the utility of the intraoperative high frequency variability index (HFVI) / Analgesia Nociception Index (ANI) for predicting postoperative pain in patients undergoing open liver or pancreatic…

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Replication FailureOpen accessMedicine

Radiotherapy Offered Limited Additional Benefits on Cancer-specific Survival for Patients with Resectable Subcutaneous Malignant Peripheral Nerve Sheath Tumors: A Population-based Retrospective Cohort Analysis.

Xiao Y, Li Z, Hu B et al. · 2025 · Neurologia medico-chirurgica

For resectable malignant peripheral nerve sheath tumors, the additional benefits of radiotherapy remain controversial. This study aims to investigate whether there is an additional benefit of radiotherapy for resectable malignant…

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Replication FailureOpen accessMedicine

When anticoagulant therapy is not enough: recurrent stroke.

Stazi F · 2026 · European heart journal supplements : journal of the European Society of Cardiology

Despite the use of oral anticoagulants, the residual risk of recurrent ischaemic stroke in patients with atrial fibrillation (AF) is ∼4% per year; however, in patients who experience a stroke despite oral anticoagulant therapy (OAT), this…

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Negative / Null Result ReportOpen accessMedicine

Most autophagic cell death studies lack evidence of causality.

Özkaya AB, Ghaseminejad Y · 2025 · FEBS open bio

Autophagy plays a critical role in maintaining cellular homeostasis and is implicated in various physiological and pathological processes, including cancer, neurodegeneration, and metabolic disorders. Although typically associated with…

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Negative / Null Result ReportOpen accessMedicine

Overall survival following treatment of central nervous system meningeal melanocytomas: Insights from the national cancer database (NCDB).

El-Hajj VG, El Choueiri J, Vasella F et al. · 2026 · Brain & spine

Introduction Central nervous system (CNS) melanocytomas are rare, pigmented tumors derived from leptomeningeal melanocytes. Although generally benign, they can exhibit locally aggressive behavior and recur. Despite increasing recognition,…

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Replication FailureOpen accessMedicine

Time To Inject Some Contrast into the Nephrotoxicity Debate.

Florens N, Demiselle J · 2026 · Kidney360

Iodinated contrast media have long been feared for causing contrast-induced AKI (CI-AKI), a concern rooted in early reports with high-osmolar agents. Experimental data suggest potential nephrotoxic mechanisms, yet clinical evidence from…

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Failed Experiment ReportMedicine

Role of Colchicine in Reducing Reperfusion Injury in STEMI Patients Who Undergo Primary Percutaneous Coronary Intervention: A Randomized Clinical Trial.

Karim B, Alwi I, Yamin M et al. · 2025 · Acta medica Indonesiana

Background Inflammation plays a role in ST-segment elevation myocardial infarction (STEMI), especially in reperfusion injury (RI). Colchicine, an anti-inflammatory drug, can suppress inflammation during RI. We assessed the effectiveness of…

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