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Failure-mode index

Search what already failed

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.

20240 results in Negative / Null Result Report · page 357 of 675

Negative / Null Result ReportMedicine

Familial hypercholesterolaemia in children: diagnostic profile and factors influencing diagnosis in a tertiary referral centre.

Kavrul Kayaalp G, Balcı MC, Kürkçü Güneş D et al. · 2026 · Cardiology in the young

Background Early identification of familial hypercholesterolaemia is critical to prevent long-term cardiovascular complications. This study assessed diagnostic features and age at diagnosis in children with familial hypercholesterolaemia…

View details →DOI: 10.1017/s104795112611302x
Negative / Null Result ReportMedicine

Epidemiology of rehabilitation practices for inpatients with nephrotic syndrome: a retrospective cohort study using an administrative database.

Shinkawa K, Yoshida S, Nakao YM et al. · 2026 · Clinical and experimental nephrology

Introduction The clinical characteristics of patients with nephrotic syndrome undergoing in-hospital rehabilitation are not well-understood, and the effects of exercise on acute kidney injury (AKI) or venous thromboembolism (VTE) in this…

View details →DOI: 10.1007/s10157-026-02832-x
Negative / Null Result Report

Changes in anthropometric nutritional status and physical activity levels and five-year survival in women with endometrioid endometrial cancer: a prospective cohort study

Conteville LV, Fernandes JPA, Frajacomo FT et al. · 2026 · Preprint

Abstract OBJECTIVES To examine the association between longitudinal trajectories of anthropometric nutritional status, physical activity, and overall survival among women with endometrial cancer. METHODS In a prospective cohort study, we…

View details →DOI: 10.21203/rs.3.rs-9438420/v1
Negative / Null Result ReportOpen accessMedicine

Genetic Association Study of Brain-Derived Neurotrophic Factor (BDNF) and Serotonin-Related Gene Variants in Suicide Attempters with Major Depressive Disorder and Control Persons.

Kim T, Oh SB, Choi HJ et al. · 2025 · Genes

Objective Suicide attempts have become one of the most serious problems worldwide in recent years. Suicide attempts are known to be genetically highly associated with serotonin and BDNF in international studies. Methods In this study, we…

View details →DOI: 10.3390/genes16111304
Negative / Null Result Report

Independent and Joint Associations of Social Participation and Depressive Symptoms with Incident Stroke Risk in Older Adults: A Prospective Cohort Study Based on CHARLS and ELSA

Ma L, Ma Y, Huang Z et al. · 2026 · Preprint

Abstract Background: Stroke remains a leading cause of death and disability among older adults. Depressive symptoms and low social participation may increase stroke risk via behavioural and biological pathways. This study examined the…

View details →DOI: 10.21203/rs.3.rs-8765182/v1
Negative / Null Result ReportOpen accessMedicine

Surgeon-Patient Sex Concordance and Postoperative Outcomes in Cataract Surgeries: A 16-Year Retrospective Cohort Study.

Majmudar IP, Aggarwal S, Hamzeh N et al. · 2026 · Clinical ophthalmology (Auckland, N.Z.)

Purpose To determine if there is an association between surgeon-patient sex concordance and post-surgical complications for cataract surgeries. Patients and methods In this 16-year retrospective cohort study, data was collected from the…

View details →DOI: 10.2147/opth.s612384
Negative / Null Result ReportMedicine

Impact of socioeconomic deprivation on the rate of residual or recurrent cholesteatoma following primary mastoidectomy.

Foo JF, Haddow K, Jones S et al. · 2026 · The Journal of laryngology and otology

Objectives To investigate whether socioeconomic deprivation is associated with residual or recurrent cholesteatoma following primary mastoidectomy. Methods A retrospective cohort study included all patients undergoing primary mastoidectomy…

View details →DOI: 10.1017/s002221512610499x
Negative / Null Result ReportMedicine

Association between rivaroxaban use and acute kidney injury in patients over 65 years: A large-scale analysis of spontaneous reporting system data.

Peng P, Guo Y, Zhu Y · 2026 · Advances in clinical and experimental medicine : official organ Wroclaw Medical University

Background Given that long-term anticoagulant therapy is required in many clinical scenarios, continuous safety monitoring of direct factor Xa inhibitors is of great importance. To date, the renal safety of these agents remains a subject…

View details →DOI: 10.17219/acem/210295
Negative / Null Result ReportOpen accessMedicine

Genetic influence of PPAR-γ rs1801282 and MTRR rs162036 variants on non-small cell lung cancer risk in Egyptians.

Metwally YF, Zahran RF, El Sadda RR et al. · 2026 · Discover oncology

Background Lung cancer remains the leading cause of cancer-related deaths worldwide. Despite advances in diagnostics and treatment, most patients are diagnosed at advanced stages. Genetic variants such as single nucleotide polymorphisms…

View details →DOI: 10.1007/s12672-026-04972-8
Negative / Null Result ReportMedicine

Analysis of Homocysteine Level in Patient with Acute Kidney Injury.

Aryal SB, Raj Joshi D · 2026 · Journal of Nepal Health Research Council

Background Homocysteine (Hcy) contributes to oxidative stress and renal injury by generating reactive oxygen species and reducing heme oxygenase-1 levels. Elevated Hcy (Hhcy) may worsen outcomes after acute renal failure(ARF), promoting…

View details →DOI: 10.33314/jnhrc.v23i03.4635
Negative / Null Result ReportMedicine

Bias in the Composite Outcomes of Kidney-Cardio Protective Trials in Chronic Kidney Disease: A Meta-Epidemiological Study.

Bellos I, Marinaki S, Benetou V · 2026 · Journal of clinical medicine

Background/Objectives : Composite endpoints are commonly used in chronic kidney disease (CKD) trials to enhance statistical efficiency but may not reflect clinically meaningful outcomes. We assessed agreement between composite endpoints…

View details →DOI: 10.3390/jcm15124840
Negative / Null Result ReportMedicine

Seroprevalence of hepatitis B, hepatitis C and HIV among male injecting drug users in Afghanistan.

Hakim MS, Hashimi MH, Saeed KM et al. · 2026 · Eastern Mediterranean health journal = La revue de sante de la Mediterranee orientale = al-Majallah al-sihhiyah li-sharq al-mutawassit

Background Viral hepatitis and HIV infections are common public health concerns among injecting drug users, however, there is limited evidence on their seroprevalence in Afghanistan. Aim To determine the seroprevalence of hepatitis B,…

View details →DOI: 10.26719/2026.32.2.61
Negative / Null Result ReportMedicine

County-Level Environmental Quality and Risk of Hypospadias in Arkansas.

Famuyide L, Patel J, Nembhard WN · 2026 · Birth defects research

Background Hypospadias is one of the most common genital defects in boys, affecting about 1 in 125 live-born boys. Several studies have examined the association between a single environmental exposure and risk of hypospadias, but few have…

View details →DOI: 10.1002/bdr2.70022
Negative / Null Result ReportMedicine

The relationship between serum neopterin levels and disease activity in patients with spondyloarthropathy.

Kılıç A, Koçak Ulucaköy R, Osmanov Z et al. · 2026 · Biomarkers in medicine

Objective Biomarkers that accurately reflect disease activity and inflammatory burden are needed, particularly in the early stages of spondyloarthropathy (SpA). This study aimed to evaluate the association between serum neopterin levels…

View details →DOI: 10.1080/17520363.2026.2686306
Negative / Null Result ReportMedicine

Prevalence and Clinical Relevance of Alström Syndrome Protein 1 Gene Variant and Feline Hypertrophic Cardiomyopathy in Sphynx Cats in Thailand.

Sussadee M, Jarudecha T, Muikaew R et al. · 2026 · Animals : an open access journal from MDPI

Feline hypertrophic cardiomyopathy (HCM) is the most common cardiac disease in cats, causing morbidity and mortality. Recently, a variant in the Alström syndrome protein 1 ( ALMS1 ) gene has been reported to be associated with HCM in…

View details →DOI: 10.3390/ani16121815
Negative / Null Result ReportMedicine

Modular guided tibial plateau-leveling osteotomy improves osteotomy centering accuracy compared to a freehand technique.

McCaw K, Fink B, Danis D et al. · 2026 · American journal of veterinary research

Objective To compare the accuracy of a tibial plateau-leveling osteotomy (TPLO) using a modular guide (OssAbility) compared to the traditional freehand method. We hypothesized that guide use would improve TPLO centering and accuracy in the…

View details →DOI: 10.2460/ajvr.26.03.0128
Negative / Null Result ReportOpen accessMedicine

Bacteriological Profiles of Post-mortem Blood Cultures and Their Relationship to the Cause of Death: A Study of 100 Autopsies.

Gaba K, Kumar K, Kaushik R et al. · 2026 · Cureus

Background The use of post-mortem blood culture as a diagnostic tool in medico-legal autopsies is limited. Differentiating true infection from contamination or post-mortem bacterial translocation remains a challenge. This study aimed to…

View details →DOI: 10.7759/cureus.104988
Negative / Null Result Report

The Mannheim Peritonitis Index: a prognostic scoring system for in-hospital mortality in peritonitis secondary to hollow viscus perforation

Zehra J, Kumari C, Bibi A et al. · 2026 · Preprint

Abstract Objective This study aimed to investigate in-hospital mortality rates among different Mannheim Peritonitis Index (MPI) score groups in patients who underwent emergency laparotomy due to hollow viscus perforation. Methods We…

View details →DOI: 10.21203/rs.3.rs-9066416/v1
Negative / Null Result ReportMedicine

Shape and size of foveal avascular zone in normal subjects using optical coherence tomography angiography (OCTA) : A retrospective analysis.

Chaudhry A, Moin M, Malik TG et al. · 2026 · JPMA. The Journal of the Pakistan Medical Association

To determine the shape and size of foveal avascular zone in terms of perimeter, circularity, roundness and axial ratio using optical coherence tomography angiography. The retrospective study was conducted at the Yaqeen Vison Clinic,…

View details →DOI: 10.47391/jpma.22735
Negative / Null Result ReportMedicine

Clinical Use of Inhibin B in Male Adolescent Childhood Cancer Survivors: Correlation With Cyclophosphamide Equivalent Dosing.

Wei W, Shaibi GQ, Temkit H et al. · 2026 · Journal of pediatric hematology/oncology

Introduction Alkylators are gonadotoxic in a cumulative manner, with overall exposure quantified as the cyclophosphamide equivalent dose (CED). Inhibin B is used as a surrogate marker of fertility in adult male childhood cancer survivors…

View details →DOI: 10.1097/mph.0000000000003226
Negative / Null Result ReportOpen accessMedicine

Medication reminder use and medication adherence among patients with chronic conditions in a Malaysian teaching hospital.

Md Kasim NA, Shirinal Izuan US, Karuppannan M · 2026 · BMC health services research

BACKGROUND: Healthcare providers commonly recommend medication reminders as a strategy to enhance adherence to prescribed medications. Patient demographic characteristics may influence medication adherence and incorporating patient-centred…

View details →DOI: 10.1186/s12913-026-14457-7
Negative / Null Result ReportOpen accessMedicine

Tracheotomy Before Total Laryngectomy as a Risk Factor for Stoma Recurrence.

Prates AJ, Curioni OA, Ramos DM et al. · 2026 · Diagnostics (Basel, Switzerland)

Background/Objectives: Laryngeal cancer has a high incidence and mortality rate, especially in advanced stages. Stoma recurrence after total laryngectomy is rare but lethal, and its risk factors remain controversial. We aimed to assess…

View details →DOI: 10.3390/diagnostics16101552