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Browse the failure-mode index

12,254 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

Role of β-Arrestin 2 in the antinociceptive and side effect profile of morphine and the novel mu opioid receptor agonists, kurkinorin and kurkinol.

van de Wetering R, Alder AF, Biggerstaff A et al. · 2025 · Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology

The development of safer mu opioid receptor (MOR) agonists with reduced side effects is a key focus of pain research. Some studies have suggested that MOR agonists with reduced β-arrestin 2 (βArr2) signaling (i.e. G-protein biased…

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Negative / Null Result ReportOpen accessMedicine

Rate of growth of Merkel cell carcinoma: a unique photographic evidence.

Bearzi E, Sola S, Defferrari C et al. · 2026 · Dermatology reports

Merkel cell carcinoma (MCC) is a rare, aggressive neuroendocrine skin tumor, mainly linked to Merkel cell polyomavirus (MCPyV) and less often to ultraviolet exposure. Additional risk factors include advanced age and immunosuppression.…

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Negative / Null Result ReportOpen accessMedicine

Fluorescent Light Energy in Feline Surgical and Traumatic Wounds: A Prospective Single-Arm Pilot Study of Healing Progression and Bacterial Findings.

Nocera FP, Fantini O, Abate G et al. · 2026 · Veterinary medicine and science

Background Traumatic and surgical wounds are common in cats, but their management is often challenging due to anatomical factors, delayed presentation, behavioural issues and frequent bacterial colonization. Objectives This prospective,…

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Negative / Null Result ReportOpen accessMedicine

A Pilot, Randomised, Placebo-Controlled, Double-Blind Trial of a Single Oral Dose of Ivermectin for Post-Exposure Prophylaxis of SARS-CoV-2.

Wagstaff KM, Stein MS, Herschtal A et al. · 2025 · Pharmaceutics

Background: The efficacy of a single oral dose of Ivermectin as prophylaxis for SARS-CoV-2 is uncertain. This trial sought to evaluate the effectiveness of a single oral low dose of Ivermectin to prevent SARS-CoV-2 infection or reduce…

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Negative / Null Result ReportMedicine

The effect of fluoride varnish application on colour change due to paediatric drug usage in polyacid-modified composite resin: an in vitro study.

Çevik N, Hazar Bodrumlu E · 2024 · European archives of paediatric dentistry : official journal of the European Academy of Paediatric Dentistry

Objective Colour stability is important in the long-term aesthetic success of restorative materials and is affected by both internal and external factors. Internal discolourations are due to the properties of the restorative materials.…

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Negative / Null Result ReportMedicine

Can a Sacrococcygeal Epidural of 0.25% Bupivacaine Prevent the Activation of the Sympathetic Nervous System during Feline Ovariectomy?

Martins J, Eliseu A, Campos S et al. · 2024 · Animals : an open access journal from MDPI

The ovariectomy (OVE) procedure can trigger somatosensory and visceral peritoneal nociception. Sacrococcygeal epidural (ScE) anesthesia may complement or replace systemic analgesia used for feline OVE, reducing opioid consumption and their…

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Replication FailureOpen accessMedicine

Early Buccal Bone Resorption in Areas With or Without Keratinized Tissue and Different Mucosal Thickness at Implants in Healed Sites: An Experimental Animal Study.

Liñares A, Tan HJ, Muñoz F et al. · 2025 · Journal of clinical periodontology

Aim To evaluate early buccal bone resorption (BBR) in areas with or without buccal keratinized tissue (KT), and different mucosal thickness (MT) following implant placement at healed sites. Materials and methods In 9 beagle dogs, three…

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Negative / Null Result ReportOpen accessMedicine

Dual Mechanisms of the Diazepine-Benzimidazole Derivative, DAB-19, in Modulating Glutamatergic Neurotransmission.

Nikolaev MV, Fedorova IM, Chistyakova OV et al. · 2025 · International journal of molecular sciences

The search for novel compounds with anticonvulsant properties remains a key focus in neuropharmacology. Recently, the diazepine-benzimidazole derivative, DAB-19, has emerged as a promising candidate due to its demonstrated anxiolytic and…

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Negative / Null Result ReportMedicine

The anti-inflammatory properties of green tea extract protect against gentamicin-induced kidney injury.

Ayusso LL, Girol AP, Ribeiro Souza H et al. · 2024 · Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie

We assessed in vivo the protective effects and underlying antioxidant and anti-inflammatory properties of dry green tee extract (GTE) on glomerular and tubular kidney function and structure in an experimental model of gentamicin…

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Negative / Null Result ReportMedicine

Prevalence, risk factors and the impact of tenofovir treatment in SARS-CoV-2 infection and COVID-19 disease among people living with HIV: A cross-sectional population-based study.

de Lazzari E, Nomah DK, Blanco JL et al. · 2024 · International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases

Objectives The prevalence and risk factors of SARS-CoV-2 infection among unvaccinated people living with HIV (PWH) are not well understood, and the protective role of tenofovir remains controversial. This study aimed to assess the…

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Negative / Null Result ReportOpen accessMedicine

Aicardi-Goutières syndrome type 6: report of ADAR variant and clinical outcome after ruxolitinib treatment in the neonatal period.

Gabaldon-Albero A, Martin-Grau C, Marti-Masanet M et al. · 2024 · Pediatric rheumatology online journal

Background Aicardi-Goutières Syndrome is a monogenic type 1 interferonopathy with infantile onset, characterized by a variable degree of neurological damage. Approximately 7% of Aicardi-Goutières Syndrome cases are caused by pathogenic…

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