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Browse the failure-mode index

12,380 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

An examination into the safety and efficacy of Khapregesic®, a Khaya senegalensis preparation, on physical and psychological wellbeing in women experiencing menopausal symptoms: a randomised, double-blind, placebo-controlled trial.

Lopresti AL, Smith SJ, Ferdinands FR · 2026 · Frontiers in reproductive health

Background Khaya senegalensis is a tree species that has traditional use for the alleviation of menstrual and hormonal symptoms in women. Moreover, supplementation with a Khaya senegalensis preparation (Khapregesic®) was associated with…

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Negative / Null Result ReportOpen accessMedicine

Short-Term Gingival Microcirculatory Responses to Non-Invasive Physical Stimulation: Implications for Accelerated Orthodontic Research.

Atsuta S, Koizumi S, Takahashi SS et al. · 2026 · Dentistry journal

Background/Objectives : Acceleration of orthodontic tooth movement remains a major challenge in clinical orthodontics. Evidence suggests that increased local blood flow around the alveolar bone is key to bone remodeling and potentially…

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Replication FailureOpen accessMedicine

Management of Distal Radius Fractures in Frail Elderly Patients With High Anesthetic Risk: Cast Immobilization Versus Volar Locking Plate Fixation.

Yiğit N, Nazlıgül AS, Ülgen NK et al. · 2026 · Geriatric orthopaedic surgery & rehabilitation

Background Distal radius fractures are common among elderly patients and frequently pose management challenges due to advanced age, multiple comorbidities, and increased anesthesia-related risks. In high-risk individuals with limited…

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Negative / Null Result ReportOpen accessMedicine

Digestive Tract Cancer: A Retrospective Study of the Epidemiological Profile of Populations Exposed and Not Exposed to Uranium Contamination in North Kazakhstan (2014-2023).

Ilbekova K, Ibrayeva D, Saifulina E et al. · 2026 · Journal of clinical medicine

Background/Objectives : Cancer incidence and mortality are key epidemiological indicators for evaluating the long-term biological effects of chronic low-dose radiation exposure. The aim of this study was to assess the incidence, structure,…

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Negative / Null Result ReportOpen accessMedicine

Evaluation of Interexaminer Reliability in Visual Shade Matching: A Comparative Analysis of Optilume Trueshade and Conventional Lighting for Permanent Anterior Teeth.

Alkhalifah OF, Ali Shah S, Tareen SUK et al. · 2026 · Cureus

Background Achieving a lifelike color match for anterior restorations is a persistent challenge because tooth appearance is heavily influenced by illumination and observer-dependent choices. While visual matching with VITA-type guides…

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Negative / Null Result ReportOpen accessMedicine

A Phase II Study of FOLFIRI Plus Ziv-Aflibercept After Trifluridine/Tipiracil Plus Bevacizumab in Patients with Metastatic Colorectal Cancer: WJOG 11018G.

Matsumoto T, Yamamoto Y, Kotaka M et al. · 2024 · Targeted oncology

Background Non-inferiority of trifluridine/tipiracil (FTD/TPI) plus bevacizumab (BEV) to irinotecan/fluoropyrimidine plus BEV in metastatic colorectal cancer was investigated in the phase III TRUSTY study, and we conducted a phase II study…

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Negative / Null Result ReportMedicine

Efficacy and safety of biological DMARDs: a systematic literature review informing the 2022 update of the ASAS-EULAR recommendations for the management of axial spondyloarthritis.

Webers C, Ortolan A, Sepriano A et al. · 2023 · Annals of the rheumatic diseases

Objective To update the evidence on efficacy and safety of biological disease-modifying antirheumatic drugs (bDMARDs) in patients with axial spondyloarthritis (axSpA) to inform the 2022 update of the Assessment of SpondyloArthritis…

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Negative / Null Result ReportOpen accessMedicine

Perioperative immunotherapy combined with standard therapy for human epidermal growth factor receptor 2-positive locally advanced gastric cancer: A case report.

Ma XT, Yao GY, Li JL et al. · 2025 · World journal of clinical oncology

Background Human epidermal growth factor receptor 2 (HER2)-positive gastric cancer (GC) represents a distinct molecular cancer subtype that is often associated with a poor prognosis. While perioperative chemotherapy regimens are currently…

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Negative / Null Result ReportOpen accessMedicine

Differences in umbilical cord blood gas parameters between women with and without gestational diabetes: a single-center prospective-retrospective cohort study.

Szablewska AW, Zając B · 2026 · Scientific reports

Gestational diabetes mellitus (GDM) is associated with various perinatal complications and may affect neonatal acid-base status. Umbilical cord arterial blood gas (ABG) analysis provides an objective measure of fetal well-being at birth,…

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Abandoned HypothesisOpen accessMedicine

Use Treadmills with Caution: Walking Energy Expenditure and Metabolic Cost Are Elevated Compared to Overground Across Multiple Speeds in Healthy Young Adults.

Das Gupta S, Kamishita K, Kondo M et al. · 2026 · Journal of functional morphology and kinesiology

Objectives : Treadmill walking is often employed for tightly controlled gait and energetics research, but growing evidence suggests that treadmill-based metabolic and biomechanical measurements may not directly reflect the ecologically…

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Negative / Null Result ReportMedicine

Integrating ankle weights into Nordic walking to improve muscle strength and functional outcomes in community-dwelling older adults: A randomized controlled trial.

Soenarti S, Sitorus S, Nugroho MB et al. · 2026 · Rehabilitacion

Sarcopenia represents a leading cause of functional decline in older adults. This randomized controlled trial examined whether the addition of ankle weights to a Nordic walking protocol yields superior outcomes compared with standard…

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Negative / Null Result ReportOpen accessMedicine

Cerebral glycerol during haemorrhagic shock in normal and raised intracranial pressure resuscitated with total REBOA: an experimental porcine study.

Bader S, Magnuson A, Brorsson C et al. · 2026 · European journal of trauma and emergency surgery : official publication of the European Trauma Society

Background Haemorrhagic shock (HS) is frequently associated with secondary cerebral injury due to compromised cerebral perfusion. Resuscitative endovascular balloon occlusion of the aorta (REBOA) is an effective haemorrhage control…

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Negative / Null Result ReportMedicine

2019 Marathon of Rome: Relationship Between Resilience and Coping Strategies in 682 Runners.

Longo UG, Mazzola A, Stelitano G et al. · 2026 · Clinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine

Objective The aim of this study was to evaluate, in runners participating in the 2019 Rome Marathon, the interaction between resilience and coping and how they are influenced by sex, age, body weight, height, number of weekly training…

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Negative / Null Result ReportOpen accessMedicine

Simultaneous bispectral index and near-infrared spectroscopy monitoring to evaluate two induction protocols in elective cardiovascular surgery.

Eke H, Toprak B, Bozkurt ED · 2026 · Journal of cardiothoracic surgery

BACKGROUND: Laryngoscopy and intubation provoke strong sympathetic activation and may cause hemodynamic instability in cardiovascular surgery patients. Maintaining adequate hypnotic depth and cerebral oxygenation during induction is…

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Negative / Null Result ReportMedicine

Decreased evertor strength following peroneus longus tendon harvest for anterior cruciate ligament reconstruction : an isokinetic muscle strength testing study.

Kotian RN, Ajoy SM, Panduranga R et al. · 2026 · The bone & joint journal

Aims There are conflicting results in the literature regarding the safety of the peroneus longus tendon (PLT) as a potential graft for anterior cruciate ligament (ACL) reconstruction, and no long-term studies with objective assessment…

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Negative / Null Result ReportOpen accessMedicine

Predictive Factors of Functional Prognosis in Patients with Rhegmatogenous Retinal Detachment Treated by Pars Plana Vitrectomy-A Retrospective Study.

Chereji G, Chelaru VF, Nicoară SD · 2026 · Diagnostics (Basel, Switzerland)

Background/Objectives : Rhegmatogenous retinal detachment (RRD) is a surgical emergency that causes vision loss if not properly treated. Pars plana vitrectomy (PPV) is the preferred procedure for most complex RRD cases, with a high success…

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Negative / Null Result ReportOpen accessMedicine

Genetically predicted TTK inhibition and its association with reduced breast cancer risk: a two-step Mendelian randomization study of potential gut microbiome mediation.

Liu J, Liu M, Xu Y et al. · 2026 · Clinics (Sao Paulo, Brazil)

Background BOS172722, a selective TTK inhibitor, shows promise for Breast Cancer (BC) treatment. The role of gut microbiota as a potential mediator in this process has not been established. This Mendelian Randomization (MR) study…

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Negative / Null Result ReportMedicine

Effects of different hyrax maxillary expansion protocols compared with novel magnetic expansion on the pharyngeal airway and maxillary sinus spaces: A retrospective CBCT-based observational study.

Algahefi AL, Alhammadi MS, Li Z et al. · 2026 · American journal of otolaryngology

Purpose To evaluate three-dimensional changes in the maxillary sinus (MS) and pharyngeal airway space (PAS) following rapid (RME), slow (SME), and magnetic maxillary expansion (MME) using cone-beam computed tomography (CBCT). Methods This…

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