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19,850 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 ReportOpen accessMedicine

Lack of association between G6PD variants and Parkinson disease.

Chifamba LV, Parlar SC, Liu L et al. · 2026 · HGG advances

Oxidative stress has been implicated in Parkinson disease (PD). Genes involved in PD, such as PRKN, PINK1, and PARK7, contribute to oxidative stress in dopaminergic neurons. The X-linked G6PD gene encodes glucose 6-phosphate dehydrogenase,…

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Negative / Null Result ReportMedicine

Lack of Association Between Dietary Fiber Intake and Kidney Failure Among Patients With Chronic Kidney Disease: The Chronic Kidney Disease-Japan Cohort Study.

Hattori K, Sakaguchi Y, Isaka Y et al. · 2025 · Journal of renal nutrition : the official journal of the Council on Renal Nutrition of the National Kidney Foundation

Objective It remains unclear whether dietary fiber intake improves kidney outcome. The objective of our study was to examine the association between dietary fiber intake and the risk of kidney failure among patients with proteinuric…

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Negative / Null Result ReportMedicine

SARS-CoV-2 Vaccination and Disorders of Menstruation: A Population-Based Cohort Study.

Velez MP, Treacy K, Shellenberger J et al. · 2025 · Journal of obstetrics and gynaecology Canada : JOGC = Journal d'obstetrique et gynecologie du Canada : JOGC

This population-based study evaluated the association between SARS-CoV-2 vaccination and disorders of menstruation among all women in Ontario aged 18-44 years. Study exposure was receipt of a first dose of any SARS-CoV-2 vaccine from…

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Negative / Null Result ReportMedicine

The role of susceptibility weighted imaging as a substitute to post-contrast T1-weighed images in detection of active multiple sclerosis lesions.

Rashad Ali F, Teiba MK, Sheha AS et al. · 2026 · Clinical radiology

Background and purpose Magnetic susceptibility levels of multiple sclerosis plaques increase as they convert from the active enhancing stage to the chronic or inactive nonenhancing stages. The purpose of our study was to discern whether a…

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Negative / Null Result ReportOpen accessMedicine

Evaluation of the therapeutic value of conventional transpedal lymphography for the treatment of inguinal lymphatic fistulas after lymphadenectomy.

Wolfram C, Vogl TJ, Eichler K et al. · 2026 · CVIR endovascular

Purpose To evaluate therapeutic effectiveness and safety of lipiodol-based conservative transpedal lymphangiography in sealing persistent inguinal lymphatic fistulas after lymphadenectomy and to determine whether therapeutic success is…

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Negative / Null Result ReportOpen accessMedicine

Distribution of Plasmodium falciparum apical membrane antigen-1 cluster one loop haplotypes and their association with malaria symptoms in Bandiagara, Mali.

Ouattara A, Adams M, Niangaly A et al. · 2026 · BMC infectious diseases

Although overall malaria incidence has decreased sharply over the past two decades, progress has stalled since 2015. The human host maintains a complex set of interactions with Plasmodium falciparum, the parasite species causing most…

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Negative / Null Result ReportOpen accessMedicine

Lack of concordance among infant social attention measures.

Viktorsson C, Astor K · 2026 · Scientific reports

Infants’ tendency to focus on socially relevant cues is commonly referred to as ‘social attention’ and is often conceptualized as a unified construct. However, few studies have examined the concordance among measures that fall under this…

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Negative / Null Result ReportMedicine

Long-term Ambient Air Pollution Exposure and Coronary Calcium Score in Men: Insights from the DANCAVAS Study.

Mohamed RA, Peronard Mayntz S, Møller JK et al. · 2025 · European journal of preventive cardiology

Aims This study assessed the relationship between air pollution exposure, fine particulate matter ≤2.5 µm (PM2.5) and nitrogen dioxide (NO2), and coronary calcium score (CCS) in a cohort of 60-75-year-old men from the Danish Cardiovascular…

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Negative / Null Result ReportMedicine

Physical activity and health-related quality of life among men with prostate cancer living in remote areas of Quebec A cross-sectional, observational study.

Gendron MP, El-Haouly A · 2025 · Canadian Urological Association journal = Journal de l'Association des urologues du Canada

Introduction The majority (97.5%) of men with prostate cancer (PCa) live for at least five years after diagnosis. The health-related quality of life (HRQoL) of such men is affected by the adverse effects of treatment. Men living in remote…

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Negative / Null Result ReportMedicine

Impact of Lordosis Distribution Index on Proximal Junctional Kyphosis and Clinical Outcomes in Patients Undergoing Thoracolumbar Fusion for Degenerative Flatback Syndrome.

Park JS, Kang DH, Lee CS et al. · 2025 · Spine

Study design Retrospective study using prospectively collected data. Objective To investigate the impact of the lordosis distribution index (LDI) on proximal junctional kyphosis (PJK) and clinical outcomes in patients with degenerative…

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Negative / Null Result ReportMedicine

Academic and Pre-Medical Advising Factors Associated with Admission to the John A. Burns School of Medicine Among Premedical Students at the University of Hawai'i at Mānoa.

Hosoda KK, Shiroma KY, Lee PM et al. · 2026 · Hawai'i journal of health & social welfare

The Medical School Hotline of the University of Hawai'i John A. Burns School of Medicine was founded in 1993, by Satoru Izutu PhD (former vice-dean of UH JABSOM). It is edited by Kathleen Kihmm Connolly PhD, HJH&W Contributing Editor.…

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Negative / Null Result ReportMedicine

Lack of Association between Vitamin D Genetic Polymorphism and Virological Characteristics of Hepatitis B Infection.

da Silva JC, Caetano AR, Mendonça ACDF et al. · 2025 · The journal of applied laboratory medicine

Background Exploring polymorphisms in vitamin D-related genes (VDR) within the Brazilian population provides a valuable model to contribute to the influence of the host genetic variants on chronic viral hepatitis B (CHB). Methods 126 CHB…

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Negative / Null Result ReportMedicine

Is time interval from breastfeeding cessation to frozen single euploid embryo transfer cycle associated with pregnancy outcome?

Bergin K, Leibner L, Roger S et al. · 2026 · International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics

Objective Prolactin (PRL) secretion during breastfeeding suppresses gonadotropin releasing hormone and ovulation. While PRL receptors are present in the endometrium, it is unknown whether transient rises in secretion during breastfeeding…

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Negative / Null Result ReportOpen accessMedicine

The relational association between multiple sexual partners and HIV testing on cervical cancer screening among women of reproductive age in Ghana: A national population-based study.

Afaya A, Awunyo W, Udeoha MA et al. · 2026 · PloS one

Background Cervical cancer screening remains vital in the early detection of precancerous lesions and promotes better treatment outcomes. Though evidence suggested multiple sexual partners and HIV infection as risk factors for cervical…

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Negative / Null Result ReportOpen accessMedicine

Visually assessed ischemia on cardiac magnetic resonance, but not quantitative perfusion metrics, predicts symptomatic improvement in coronary artery bypass.

Akbari T, Mach L, Hammersley DJ et al. · 2025 · Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance

Background Serial perfusion cardiovascular magnetic resonance (CMR) in symptomatic patients undergoing coronary artery bypass grafting (CABG) may provide mechanistic insight into dynamic abnormalities of the myocardium. Objectives To…

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Negative / Null Result ReportMedicine

High levels of the adipokines leptin and metrnl in patients with paroxysmal atrial fibrillation and obstructive sleep apnea are not associated with the severity of sleep apnea or the burden of atrial fibrillation.

Ueland T, Traaen GM, Hunt TE et al. · 2025 · Sleep medicine

Study objectives Obstructive sleep apnea (OSA) and atrial fibrillation (AF) are highly prevalent conditions sharing multiple risk factors including obesity. Adipokines secreted from adipose tissue could modify pathways affecting atrial…

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