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Browse the failure-mode index

11,325 real negative results, null findings, and replication failures in Medicine · 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

Cardiovascular Outcomes in Adults with Coronary Artery Disease and Obstructive Sleep Apnea with versus without Excessive Daytime Sleepiness in the RICCADSA Cinical Trial.

Eulenburg C, Celik Y, Redline S et al. · 2023 · Annals of the American Thoracic Society

Rationale: Recent randomized controlled trials did not show cardiovascular benefits of continuous positive airway pressure (CPAP) in adults with coronary artery disease (CAD) and obstructive sleep apnea (OSA) in intention-to-treat…

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Negative / Null Result ReportMedicine

Estimating the Opportunity for Early Detection of Ovarian Cancer Using Individual-Patient Data from a Large Randomized Controlled Trial.

Ryser MD, Holloway ST, Morsomme R et al. · 2025 · Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology

Background The UK Collaborative Trial of Ovarian Cancer Screening did not detect a reduction in ovarian cancer mortality with either multimodal screening (MMS) or transvaginal ultrasound screening (USS) compared with no screening. The…

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Negative / Null Result ReportOpen accessMedicine

Hemodynamic Effects of an Increased Midodrine Dosing Frequency.

Macielak SA, Vollmer NJ, Haddad NA et al. · 2021 · Critical care explorations

In practice, midodrine has been used to reduce IV vasopressor requirements and decrease ICU length of stay. However, recent publications have failed to show clinical success when midodrine was administered every 8 hours. One possible…

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Negative / Null Result ReportOpen accessMedicine

The hazards of chasing subgroups in neutral stroke trials.

Bath PM, Howard G, Hacke W · 2025 · Neurological research and practice

Background The majority of randomised controlled trials in acute stroke and many for prevention are neutral, i.e. they failed to reach statistical significance. However, many of these will find apparent benefit in a component of a…

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Negative / Null Result ReportMedicine

The Usefulness of the Alpha-Defensin Lateral Flow Test in the Diagnosis of Prosthetic Infection: A Retrospective Cohort Study.

Galipienso-Eri M, Baraldés-Canals M, Aliaga-Martínez A et al. · 2025 · Indian journal of orthopaedics

Background/purpose Periprosthetic joint infection (PJI) accounts for up to 25% of failed total knee arthroplasties and 15% of the hips. The ICM18 established the criteria for the diagnosis, and the alpha-defensin lateral flow test (ADLT)…

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Negative / Null Result ReportMedicine

Impact of subsequent immune checkpoint inhibitor treatment on overall survival with avelumab vs docetaxel in platinum-treated advanced NSCLC: Post hoc analyses from the phase 3 JAVELIN Lung 200 trial.

Park K, Özgüroğlu M, Vansteenkiste J et al. · 2021 · Lung cancer (Amsterdam, Netherlands)

Objectives The JAVELIN Lung 200 phase 3 trial did not meet its primary endpoint of improving overall survival (OS) with avelumab vs docetaxel in patients with platinum-treated PD-L1+ NSCLC. We report post hoc analyses assessing the effects…

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Negative / Null Result ReportOpen accessMedicine

Single-Cell and Plasma Proteomics Do Not Differentiate Patients With and Without SARS-CoV-2 Antigenemia in Convalescence in a Cohort of 100 Patients.

Pienkos S, Swank Z, Hamlin RE et al. · 2025 · Open forum infectious diseases

Plasma samples obtained approximately 3 ( n = 100) and 12 months ( n = 78) after acute SARS-CoV-2 infection were tested for S1, spike, and N antigens. There were no significant differences in plasma proteins or single-cell protein…

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Negative / Null Result ReportOpen accessMedicine

Fluoroquinolones and the risk of aortic aneurysm or aortic dissection: evidence from a nationwide nested case-control study paralleled with matched experimental models.

Wesley CD, Strange JE, Holt A et al. · 2025 · European heart journal open

Aims Fluoroquinolones (FQ) have been associated with aortic aneurysm and aortic dissection (AA/AD) resulting in an official warning. Recently, large-scale epidemiological studies failed to confirm this. Methods and results The current…

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Negative / Null Result ReportOpen accessMedicine

Use of a slow-release GnRH implant in an adult billy goat.

Demattio L, Fietz D, Schuler G et al. · 2024 · Tierarztliche Praxis. Ausgabe G, Grosstiere/Nutztiere

A 9.4 mg deslorelin slow-release implant was inserted into an adult, healthy billy goat to achieve temporary infertility and a reduction in sexual behavior. The implant was inserted in late autumn. No significant change in testis size was…

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Negative / Null Result ReportOpen accessMedicine

Limitations of Subgroup Safety Analyses for Drug-Drug Interaction Evaluation: Insights from the Talazoparib P-gp Inhibitor Case.

Wang D, Nanavati C, Yang DZ et al. · 2026 · Journal of clinical pharmacology

Impact of concomitant medications (conmeds) on the safety of the investigational agent is often evaluated using subgroup analyses for safety events in patients who received the conmed versus those who did not. Here, we highlight the…

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Negative / Null Result ReportOpen accessMedicine

Histomorphometric bone assessment in patients with fracture of the proximal end of the femur

Caio Gonçalves de Souza, Márcio Passini Gonçalves de Souza, Vanda Jorgetti et al. · 2015 · Acta Ortopédica Brasileira

OBJECTIVE: To determine whether there is a difference on the bone architecture in patients with femoral neck fracture compared to patients with intertrochanteric fractures and assess the importance of aging on bone microarchitecture in patients with proximal femoral fracture.METHODS: Biopsy of the iliac crest was made in seventeen patients between 55 and 90 years old who were admitted to the emergency room with fractures of the proximal end of the femur. After a small fragment was removed, we made a histomorphometric analysis of it.RESULTS: There was no significant difference between patients

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Negative / Null Result ReportOpen accessMedicine

Apolipoprotein E promoter genotypes are not associated with white matter hyperintensity development in high-altitude careers

Richard R. Chapleau, CharLee A. Martin, Summer R. Hughes et al. · 2019 · BMC Research Notes

Abstract Objective This study sought to determine if there is an association between variants in the apolipoprotein E (ApoE) promoter regions and development of white matter hyperintensities (WMH) in military subjects who have been exposed to high altitude. In an earlier study, we found that ApoE status did not correlate with WMH development, and here we hypothesized that regulation of APOE protein expression may be protective. Results Our cohort of 92 subjects encountered altitude exposures above 25,000 feet mean sea level through their occupations as pilots or altitude chamber technicians. U

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Negative / Null Result ReportOpen accessMedicine

Association between rs2787094 Genetic Variants in ADAM33 Gene and Asthma in Indonesian Population: Preliminary study

Kencono Viyati, Kinasih Prayuni, Yenni Zulhamidah et al. · 2023 · Makara Journal of Health Research

Background: Asthma is a multifactorial disease that encompasses a multitude of genetic and environmental factors. One such factor is the disintegrin and metalloprotein-33 (ADAM33) gene, which is correlated with asthma and bronchial hyperresponsiveness. Previous studies conducted on Asian populations have reported a significant association between rs2787094 polymorphism in the ADAM33 gene and asthma. Methods: Our study involved 153 Indonesian participants. TaqMan genotyping assay was used to analyze rs2787094 polymorphism in the ADAM33 gene. Results: No significant association was detected betw

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Negative / Null Result ReportOpen accessMedicine

Joint hypermobility in children with and without functional constipation

Seyed Mohammadreza Fatemi Khorasgani, Neda Ramezani, Negar Ebrahimi Varnousfaderani · 2020 · Journal of Research in Medical Sciences

Background: Previous studies report an association between joint hypermobility (JH), as a hallmark of connective tissue disorder, and autonomic dysfunction, digestive problems, and irritable bowel syndrome. However, its association with functional constipation (FC) has not been evaluated. This study is run and implemented to justify this theme/topic. Materials and Methods: In this case–control study among 200 subjects, 100 were of FC according to the ROME III Criteria (case group) and each child was matched for age and gender with a healthy control that did not meet criteria for FC (control gr

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Negative / Null Result ReportMedicine

Perioperative denosumab exposure and risk of revision after total hip and knee arthroplasty in osteoarthritis: a registry-based data linkage study.

Ciaffi J, Bordini B, Cosentino M et al. · 2026 · Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA

Osteoarthritis patients undergoing THA or TKA were studied to compare the cumulative incidence of revision after perioperative denosumab versus alendronate. Denosumab was not associated with differences in the incidence of revision after…

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Negative / Null Result ReportOpen accessMedicine

Reform and exploration of the “4+4” clinical medical talent training model

LU Yongping, PAN Tingfang · 2025 · Jichu yixue yu linchuang

In order to cultivate interdisciplinary innovative medical talents who can adapt to the development of the needs of national medical care and of global file of medical education, Peking Union Medical College has initiated the project of the “4+4” model, which covers a series of education remodeling like candidate trainees’ enrollment, curriculum integration application of new teaching methods, assessment and evaluation, etc., and has made a great progress. The existing evaluation data show that there is no significant difference between the academic performance of students in the “4+4” trainin

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Negative / Null Result ReportOpen accessMedicine

Compatibility and Marital Satisfaction in Disabled Couples Compared to Healthy Ones

Azam Abed, Aliasghar Asghar Nezhad, Hamidreza Hatami · 2015 · Iranian Rehabilitation Journal

Objectives: The aim of current study was the evaluation and comparison of compatibility and marital satisfaction between handicapped couples and healthy ones. Methods: In this study, 50 handicapped couples and 50 healthy couples were examined with Enrich’s marital satisfaction questionnaire and Bell’s adjustment questionnaire. The data were analyzed, using SPSS 15, correlation tests and ANOVA. Results: The results showed that there was no significant difference between handicapped and healthy couples in compatibility and marital satisfaction. Discussion: It is concluded that people

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Negative / Null Result ReportOpen accessMedicine

Two-year outcomes of fenestrated and branched stent grafts in patients ≤65 years: A bicenter retrospective study.

Van Weydevelt E, Alrajhi Z, Vannier C et al. · 2026 · Journal of vascular surgery cases and innovative techniques

Objective Fenestrated and branched endovascular aortic repair (F/BEVAR) is increasingly used to treat complex abdominal aortic aneurysms and thoracoabdominal aortic aneurysms (TAAAs) because of their minimally invasive nature compared with…

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Negative / Null Result ReportMedicine

Isolation and application of Bdellovibrio and like organisms (BALOs) for controlling Aeromonas hydrophila in the American eel (Anguilla rostrata) rearing water

Guo Y, Jiang B, Chen H et al. · 2026 · Aquaculture.

Bdellovibrio is a kind of fast-moving bacteria that mainly preys on Gram-negative bacteria. Aeromonas hydrophila is one of the most common pathogenic bacteria for many animals. However, the potential application of freshwater-derived…

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