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Browse the failure-mode index

12,246 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 ReportMedicine

Effectiveness of transcranial direct current stimulation (tDCS) on attention and memory biases in individuals with post-traumatic stress disorder (PTSD): a randomized, single-blind, parallel-group study.

Estaji, Ahmadizadeh · 2026 · Journal of psychiatric research

Based on neurocognitive models, the development and maintenance of post-traumatic stress disorder (PTSD) are correlated with cognitive biases, including attention and memory biases, which are associated with imbalanced activation of…

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Negative / Null Result ReportMedicine

Tongue strength and endurance in relation to oral cavity morphology among children with Down syndrome in the permanent dentition period.

Maureen, Budiardjo, Wahono · 2026 · Journal of the Indian Society of Pedodontics and Preventive Dentistry

Down syndrome is a genetic condition caused by trisomy 21, often accompanied by orofacial hypotonia and anomalies in stomatognathic development. A hypotonic tongue may alter oral cavity morphology, particularly palatal depth, anterior…

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Negative / Null Result ReportMedicine

Amyotrophic Lateral Sclerosis: The State of the Art on Treatments and the Therapeutic Role of the Intestinal Microbiome in Human Studies.

Ptáček, Musil, Guarnieri et al. · 2026 · International journal of molecular sciences

Amyotrophic lateral sclerosis (ALS) is a common neurodegenerative disorder; to date, there is no long-term effective treatment. Recently, a relationship has been discovered between the human intestinal microbiome and the pathogenesis of…

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Negative / Null Result ReportMedicine

Sex Difference Has No Effect on Survival in Pancreatic Cancer.

Tas, Erturk · 2026 · Indian journal of surgical oncology

Due to controversial results, the clinical impact of sex in pancreatic cancer has not been fully clarified. We aimed to investigate the clinical significance of sex in patients with pancreatic cancer in this study. A total of 334…

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Negative / Null Result ReportMedicine

Questionable indication for postoperative radiotherapy after surgery for metastases of the major long bones: A single-centre cohort study of 552 fractures/526 patients.

Ehne, Kastensson, Wedin et al. · 2026 · Journal of bone oncology

The use of postoperative radiotherapy (PORT) as an adjunct to orthopaedic surgery of the long bones is widely recommended. Evidence of the benefits is however sparse. The primary research question of this study was whether PORT reduces the…

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Negative / Null Result ReportMedicine

Trends and predictors of caesarean section in Thailand before and during the COVID-19 pandemic: a retrospective analysis of national hospitalisation data under the Universal Coverage Scheme.

Karunayawong, Sukmanee, Butchon et al. · 2026 · BMJ open

Since 1985, the international healthcare community has recommended the ideal rate of caesarean section (CS) to be 10%-15% at the national level. The literature has reported that overused CS without necessary medical indications can be…

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Abandoned HypothesisMedicine

Two New Pyrrole Alkaloids From Lanmaoa asiatica.

Li, Hou, Li et al. · 2026 · Chemistry & biodiversity

Two new pyrrole alkaloids, asiaticain A (1) and asiaticain B (2), two aromatic compounds 3-4, and one steroid 5 were isolated from Lanmaoa asiatica. The structural elucidation of the isolated compounds was determined by using NMR, MS, IR,…

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Negative / Null Result ReportMedicine

Evaluation of bone repair using sticky bone in preradiotherapy extraction sockets of head and neck cancer patients: a pre- and postradiotherapy follow-up.

Rodrigues, Macedo, de Paulo et al. · 2026 · Oral surgery, oral medicine, oral pathology and oral radiology

To evaluate the effects of sticky bone a biomaterial composed of Solid-PRF (S-PRF), a variant of platelet-rich fibrin (PRF), and deproteinized bovine bone-on bone formation after tooth extraction performed prior to radiotherapy, with…

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Failed Experiment ReportMedicine

Early onset radiation-induced leukoencephalopathy in patients treated for a glioblastoma by STUPP protocol and risk factors evaluation, an ancillary study of the phase III ASTER protocol.

Balcerac, Cuzzubbo, Bompaire et al. · 2026 · Revue neurologique

Since 2005, the standard treatment for newly diagnosed glioblastoma involves radiotherapy combined with concomitant and adjuvant temozolomide (TMZ), as per the Stupp protocol. A known long-term complication of radiotherapy is…

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