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Browse the failure-mode index

19,840 real negative results, null findings, and replication failures · Negative / Null Result Report. 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 ReportMedicine

Sitagliptin does not interfere with VEGF-A signaling in retinal endothelial cells in vitro.

Amthor L, Jaeckle A, Kampmeier J et al. · 2025 · Experimental and clinical endocrinology & diabetes : official journal, German Society of Endocrinology [and] German Diabetes Association

Sitagliptin, an inhibitor of dipeptidyl peptidase-4 widely used in type 2 diabetes therapy, impairs the barrier formed by retinal endothelial cells (REC) during prolonged exposure. Because diabetic macular edema is treated with inhibitors…

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Negative / Null Result Report

Incidence of SARS-CoV-2 in Patients with Rheumatic Diseases on Hydroxychloroquine, Compared with the Incidence of SARS-CoV-2 in Controls on a Prophylactic Dose of Hydroxychloroquine

Jordhani M, Ruci D, Jordhani P et al. · 2025 · Preprint

Background: Hydroxychloroquine (HCQ) is a disease-modifying antirheumatic drug used in rheumatoid arthritis (RA), systemic lupus erythematosus (SLE), and other autoimmune diseases. Although HCQ reduces SARS-CoV-2 replication in vitro at…

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Negative / Null Result Report

Loss of Complement Factor D suppresses alternative pathway activation but fails to reduce lipofuscin accumulation in the retinal pigmented epithelium of Abca4 -/- mice

Ryan BC, Griffith KE, Geczi CN et al. · 2025 · Preprint

Stargardt disease (STGD1) is the most common inherited macular dystrophy, caused by loss-of-function mutations in ABCA4 that result in bisretinoid-containing lipofuscin accumulation in the retinal pigment epithelium (RPE), and progressive…

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Negative / Null Result ReportMedicine

Selenomethionine mitigation of methylmercury-induced epigenetic and transcriptomic alterations in rainbow trout brain: A toxicogenomic survey.

Bidon M, Saito T, Skjaerven KH et al. · 2026 · Aquatic toxicology (Amsterdam, Netherlands)

Methylmercury (MeHg) is a pervasive neurotoxicant threatening aquatic ecosystems. Selenium (Se) has been reported to protect fish against the adverse MeHg toxicity, yet molecular investigations of their interaction in the brain remain…

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Negative / Null Result ReportMedicine

Dual actions of apelin-13 in TNBS-induced colitis: Colonic protection via the gut-liver axis but intrinsic hepatotoxic potential following systemic administration.

Birsen I, Erdogan K, Ozsoy O et al. · 2026 · Tissue & cell

Inflammatory bowel disease (IBD) is a systemic condition that can also lead to extraintestinal complications, including liver damage. Disruptions in the gut-liver axis and inflammatory mediators play a key role in this process. Apelin, a…

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Negative / Null Result ReportMedicine

The effect of switching antipsychotics to aripiprazole versus paliperidone on weight/cardiometabolic parameters: 18-month follow-up findings from the European Long-acting Antipsychotics in Schizophrenia Trial (EULAST).

de Boer N, Vučko Z, Koster DI et al. · 2026 · European neuropsychopharmacology : the journal of the European College of Neuropsychopharmacology

Antipsychotic-induced weight gain (AiWG) is a common, burdensome adverse effect. Switching to antipsychotics with lower metabolic risks, such as aripiprazole, is recommended, but long-term data is limited. Long-acting injectables (LAIs)…

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Negative / Null Result ReportMedicine

TNF-α antagonist alleviates muscular layer enlargement but does not prevent myenteric neuronal loss in the colon of streptozotocin-induced diabetic rats.

Sholikah TA, Septyaningtrias DE, Sumiwi YAA et al. · 2025 · Annals of anatomy = Anatomischer Anzeiger : official organ of the Anatomische Gesellschaft

Background this study aimed to examine the impact of a TNF-α antagonist on markers of neuronal death, the total number of myenteric neurons, and the volume of each colonic layer in diabetic rats. Methods thirty male rats were divided into…

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Negative / Null Result ReportMedicine

Kaempferitrin modulates AMPK phosphorylation and PEPCK expression in the liver after a short-term high-fat, high-sucrose diet intervention in mice.

Garofolo IC, Santos PF, Silva MF et al. · 2026 · Nutrition and health

Background: Type 2 Diabetes Mellitus is a metabolic disease characterized by hyperglycemia and hyperinsulinemia, closely linked to obesity. According to the International Diabetes Federation, in 2021, almost 6.7 million adults aged 20-79…

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Negative / Null Result ReportMedicine

Insights into Alternaria in apple fruit causing mouldy core, external infection and mycotoxin production under retail and storage conditions

Pavicich MA, Maldonado ML, Nguyen TN et al. · 2025 · International Journal of Food Microbiology

Apple fruit is widely consumed worldwide, but fungal contamination in the postharvest stage presents a significant food safety concern. This study evaluates the production and accumulation of Alternaria mycotoxins, including alternariol…

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Negative / Null Result ReportMedicine

Glucose-dependent insulinotropic polypeptide reduces postprandial glucose excursions but does not protect from hypoglycaemia in persons with type 1 diabetes-A randomised placebo-controlled study.

Hoe B, Heimbürger SMN, Gasbjerg LS et al. · 2026 · Diabetes, obesity & metabolism

Aims In type 1 diabetes, glucose-dependent insulinotropic polypeptide (GIP) increases glucagon secretion during low plasma glucose and improves time in the glycaemic range during daytime. To explore the glucose-stabilising potential of GIP…

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Negative / Null Result ReportMedicine

Maternal Plinia trunciflora extract attenuates anxiety but not memory deficits after neonatal hypoxia-ischemia in rats.

Carvalho AVS, Hoeper ES, Dúran-Carabali LE et al. · 2026 · The Journal of nutritional biochemistry

Neonatal hypoxia-ischemia (HI) is one of the main causes of perinatal death and is commonly associated with neurological damage which are usually observed on motor and cognitive domains. Plinia trunciflora or "jabuticaba" is a native…

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