A searchable index of real negative results, null findings, and replication failures from the published literature — so you can learn what didn't work before repeating it.
WASTE indexes published research — it does not host or republish full papers. Each entry is a metadata record (title, authors, DOI) compiled from open scholarly databases, with the abstract shown in full only where the paper is openly licensed (e.g. Creative Commons); otherwise a short excerpt is shown for reference under fair use. WASTE classifies each work by failure type; classifications are automated and approximate.
19879 results in Negative / Null Result Report · page 484 of 663
Mazdarani, Miles · 2026 · Veterinary research communications
Cranial cruciate ligament (CCL) rupture is uncommon in cats but may cause persistent stifle instability. Previous ex vivo assessments of tibial plateau levelling osteotomy and tibial tuberosity advancement have failed to restore stability…
Janz C, Timpka J, Storch A et al. · 2026 · Journal of Parkinson's disease
BackgroundThe Parkinson's Disease (PD) Home Diary (HD) is a common clinical outcome measure, but studies show only fair agreement between clinical observer and patient assessments, with no significant improvement after patient…
Le J, Patel M, Atschinow A et al. · 2026 · Cureus
The platelet-rich plasma in achilles tendon healing 2 (PATH-2) trial is the largest randomized study of platelet-rich plasma (PRP) in acute Achilles tendon rupture. While the original frequentist analysis showed no significant benefit,…
Vilela, Judith M · 1984
The activity of beta-amylase in crosses of Saccharum spontaneum L. and S. officinarum L. and their hybrids was determined. Results showed that the parents did not differ significantly in their enzyme activity. Variability in enzyme…
Robert Ladouceur, Marie Mayrand · 1987
The perceptions of control regarding an objectively uncontrollable task (American Roulette) by depressive and nondepressive subjects were compared. Monetary risk behavior and subjective control did not differ significantly between the two…
Wang J, Liu LL, Huang L et al. · 2026 · BMC nephrology
Background The European STOP study showed that glucocorticoids (with/without immunosuppressants) did not delay disease progression in adults with IgA nephropathy (IgAN). However, pediatric IgAN is characterized by more severe acute…
Park HJ, Park S, Heo S et al. · 2026 · Journal of microbiology and biotechnology
Leuconostoc lactis DMLL10 is a novel strain isolated from kimchi. The strain did not exhibit toxicity in genetic tests. This study aims to conduct a preclinical safety assessment by performing repeated-dose toxicity studies in animals. In…
Said C, Hayward C, Stevens M et al. · 2026 · Bioengineering (Basel, Switzerland)
Venoarterial extracorporeal membrane oxygenation (VA-ECMO) has failed to demonstrate mortality benefit in randomised controlled trials of cardiogenic shock. We aimed to determine whether a novel 'Hemi-ECMO' configuration, involving aortic…
Endo S, Tanaka R, Yamaguchi T et al. · 2026 · Gastric cancer : official journal of the International Gastric Cancer Association and the Japanese Gastric Cancer Association
Background Large type 3 (≥ 8 cm) and type 4 gastric cancers are associated with extremely poor prognoses. The phase III JCOG0501 trial, which evaluated neoadjuvant S-1 plus cisplatin, failed to demonstrate any survival benefits. Docetaxel,…
Chaudhari A, Rosenstein ZM, Kamal R et al. · 2025 · Preprint
Background Intracranial atherosclerotic disease (ICAD) is associated with up to 10% of ischemic strokes and a high risk of recurrence. Endovascular treatments including percutaneous transluminal angioplasty and stenting have failed to…
Schreiner M, Thien H, Braasch T et al. · 2025 · Abdominal radiology (New York)
Background Many patients are instructed to fast before abdominal ultrasound examinations in order to obtain better image quality. However, the few available studies on this topic have so far failed to demonstrate an advantage of several…
Thery G, Noly PE, Cavayas YA et al. · 2025 · Seminars in thoracic and cardiovascular surgery
ECLS-SHOCK is the largest randomized control trial on Veno-Arterial Extracorporeal Membrane Oxygenation (VA-ECMO) in Acute Myocardial Infarction-related Cardiogenic Shock (AMI-CS). Unfortunately, ECLS-SHOCK failed to demonstrate a…
Liu S, Chen B, Zhu Y et al. · 2025 · The oncologist
Background Previous results of our trial demonstrated that the addition of induction chemotherapy (IC) prior to definitive chemoradiotherapy (CRT) failed to significantly improve the response rate or 3-year survival in patients with…
Emborg C, Kothari SF, Finnerup NB et al. · 2025 · Handbook of clinical neurology
Over the past decades, a growing number of clinical trials in neurologic conditions have failed to demonstrate superiority of active treatments over placebo. A key question in this context is whether an increase in placebo response can…
Hattori Y, Abe S, Kakino Y et al. · 2026 · Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics
Interventional trials with high-density lipoprotein cholesterol (HDL-C)-raising drugs have generally failed to demonstrate a beneficial effect on cardiovascular outcomes, although low HDL-C levels confer the risk of cerebrocardiovascular…
Murillo-Olaizola A, Rodrigo-Gisbert M, Requena M et al. · 2026 · Stroke (Hoboken, N.J.)
Background Recent randomized controlled trials of endovascular treatment (EVT) for distal and medium vessel occlusion (DMVO) stroke did not demonstrate clinical benefit over best medical therapy and suggested potential safety concerns. We…
Tóth Štefan, Olexa Peter, Hertelyová Zdenka et al. · 2020 · Open Chemistry
The aim of this study was to detect the concentrations of PCSK9 in various subclinical stages of atherosclerosis and to highlight its relationship with inflammation. One hundred and fifty-nine healthy patients were divided into three groups, based on the extent of atherosclerotic changes in the carotid artery: a group without identifiable atherosclerosis, cIMT>75‰ and an asymptomatic plaque group. The PCSK9 was measured by ELISA and hsCRP by the immunoturbidimetric method. Vascular changes were identified by a carotid ultrasound. PCSK9 was elevated, when comparing the healthy group with the cI
Brenner H, Sergeev D, Heisser T et al. · 2025 · Alimentary pharmacology & therapeutics
NordICC, the first randomised trial on long-term effects of screening colonoscopy, failed to demonstrate a significant reduction in colorectal cancer (CRC) mortality. We compared reported 10-year CRC mortality results from NordICC with…
Steendam ST, Prutean N, Clybouw F et al. · 2024 · Biological psychology
Previous research suggests that the mere presence of a smartphone can detrimentally affect performance. However, other studies failed to observe such detrimental effects. A limitation of existing studies is that no indexes of (potentially…
Imam R, Chastang KM, Olowojesiku R et al. · 2025 · The Pediatric infectious disease journal
Background Multiple clinical trials evaluating therapies for cerebral malaria (CM) have failed to demonstrate improved outcomes. This may derive from inclusion of children at all risk levels, including those at low risk of mortality or…
Wolpe N, Perrottelli A, Giuliani L et al. · 2025 · European neuropsychopharmacology : the journal of the European College of Neuropsychopharmacology
The negative symptoms of schizophrenia can determine functional outcome in patients. Despite its clinical significance, no treatment exists to date, as numerous pharmacological and non-pharmacological clinical trials have failed to…
Bommersbach TJ, Saliba M, Gilman CK et al. · 2025 · JAACAP open
Objective Attention-deficit/hyperactivity disorder (ADHD) is a risk factor for future substance use. Stimulant medication has largely failed to demonstrate protection against future substance use, but no studies have assessed whether…
Li X, Li Y, Wang T et al. · 2025 · Stroke
Background Previous trials have failed to demonstrate the benefits of extracranial-intracranial (EC-IC) bypass surgery for patients with carotid or middle cerebral artery occlusion. However, little evidence has focused on the effect of age…
Tojo K, Yazawa T · 2024 · Preprint
Abstract Background Although alveolar hyperoxia exacerbates lung injury, clinical studies have failed to demonstrate the beneficial effects of lowering the fraction of inspired oxygen (F I O 2 ) in patients with acute respiratory distress…
Woittiez AJ, Postma CT, de Leeuw PW · 2026 · Kidney medicine
Atherosclerotic renal artery stenosis (ARAS) remains a complex contributor to hypertension and kidney disease. Although randomized trials failed to show benefit of revascularization on top of medical therapy over medical therapy alone,…
Peker Y, Saygin M, Celik Y et al. · 2026 · Annals of the American Thoracic Society
Rationale Recent randomized controlled trials failed to show cardiovascular benefits of treating obstructive sleep apnea (OSA) in intention-to-treat analyses which has been a matter of debate since publication of the results. Objectives To…
Gaub M, Shaffer KV, Patel P et al. · 2026 · Clinical neurology and neurosurgery
Objective EC-IC bypass for symptomatic atherosclerotic internal carotid and middle cerebral artery chronic occlusion (AIMCAO) failed to show benefit over medical management in previous randomized controlled trials. We explored how a…
Hajime T, Shiota M, Fukuchi G et al. · 2026 · Annals of surgical oncology
Background Although lymph node involvement (LNI) is a critical prognostic factor guiding adjuvant therapy, randomized trials have failed to show a survival advantage of extended versus standard pelvic lymph node dissection (PLND) but have…
Dintakurti A, Parikh MA, Silver RJ et al. · 2025 · Cardiology in review
Large-scale clinical trials of intensive glycemic control have failed to show cardiovascular benefit, with hypoglycemia implicated as a key factor. Increasing evidence suggests hypoglycemia is not merely a complication of diabetes therapy…
Bhardwaj A, Saili A, Yadav DK et al. · 2025 · Journal of neonatal-perinatal medicine
BackgroundThe prolonged ductal patency in preterm newborns despite being associated with short- and long-term morbidities has failed to show significant improvement in the long-term outcome with routine ductal treatment. Echocardiography…