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Browse the failure-mode index

11,309 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 ReportOpen accessMedicine

Effect of the index of cardiac electrophysiological balance on major adverse cardiovascular events in patients with diabetes complicated with coronary heart disease

Yuan Lin, Fang Zhou, Xihui Wang et al. · 2023 · PeerJ

Purpose: To investigate the prognostic value of the index of cardio-electrophysiological balance (ICEB) and its association with major adverse cardiac events (MACE) and cardiovascular death in diabetic patients complicated with coronary heart disease. Methods: A total of 920 diabetic patients were enrolled in this longitudinal study. Participants were categorized into three groups based on their ICEB levels: normal ICEB, low ICEB, and high ICEB. The primary outcome was the occurrence of MACE, and secondary outcomes included cardiovascular death, coronary heart disease (CHD), heart failure (HF)

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Negative / Null Result ReportOpen accessMedicine

A genome‐wide association study of obstructive heart defects among participants in the National Birth Defects Prevention Study

Sara R. Rashkin, Mario A. Cleves, Gary M. Shaw et al. · 2022 · American Journal of Medical Genetics Part A

Abstract Obstructive heart defects (OHDs) share common structural lesions in arteries and cardiac valves, accounting for ~25% of all congenital heart defects. OHDs are highly heritable, resulting from interplay among maternal exposures,…

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Negative / Null Result ReportOpen accessMedicine

Immunization with a Trypanosoma cruzi cyclophilin-19 deletion mutant protects against acute Chagas disease in mice

Bijay Kumar Jha, Sanjay Varikuti, Chaitenya Verma et al. · 2023 · npj Vaccines

Human infection with the protozoan parasite Trypanosoma cruzi causes Chagas disease for which there are no prophylactic vaccines. Cyclophilin 19 is a secreted cis-trans peptidyl isomerase expressed in all life stages of Trypanosoma cruzi. This protein in the insect stage leads to the inactivation of insect anti-parasitic peptides and parasite transformation whereas in the intracellular amastigotes it participates in generating ROS promoting the growth of parasites. We have generated a parasite mutant with depleted expression of Cyp19 by removal of 2 of 3 genes encoding this protein using doubl

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Negative / Null Result ReportOpen accessMedicine

Erythrocytosis incidence and thromboembolic risk in heart failure with reduced ejection fraction treated with SGLT2 inhibitors: a nationwide register-based cohort study

Abdullahi Ahmed Mohamed, Camilla Fuchs Andersen, Daniel Mølager Christensen et al. · 2025 · Cardiovascular Diabetology

BACKGROUND: Sodium-glucose cotransporter-2 inhibitors (SGLT2i) increase haemoglobin and haematocrit levels, potentially causing secondary erythrocytosis-defined as a haemoglobin level above 16.5 g/dL in men and 16.0 g/dL in women-which is…

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Negative / Null Result ReportMedicine

[Impact of tirofiban on outcomes in STEMI patients across different levels of inflammation: a stratified analysis based on complete blood count-derived inflammatory markers].

Lin, Dong, Yang et al. · 2026 · Zhonghua xin xue guan bing za zhi

Objective: To investigate through stratified analyses based on complete blood count-derived inflammatory markers, the effects of tirofiban on in-hospital all-cause mortality and one-year composite endpoint events in patients with…

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Negative / Null Result ReportMedicine

Olfactory notes in the mind space: A registered report.

Caldana M, Rusconi E · 2026 · Cortex; a journal devoted to the study of the nervous system and behavior

Olfaction is an archaic sense but its central mechanisms are lesser known than those of other senses. Here we address a possible link between olfactory stimuli and mental spatial representations. Although olfactory percepts are not…

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Negative / Null Result ReportMedicine

Toxicity assessment of green energy by-product, lithium, using a novel suite of eight Australian aquatic-species tests from a Global Biodiversity Hotspot.

Nice, Storer, Fisher et al. · 2026 · Environmental toxicology and chemistry

Due to recent advances in green energy initiatives in response to climate change impacts, lithium exploration and production are rapidly increasing, with concomitant elevated lithium in discharges to waterways. However, lithium toxicity to…

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Negative / Null Result ReportMedicine

Effect and safety of Neiguan acupoint injection with astragalus injection for chronic heart failure with qi-deficiency and blood-stasis syndrome: a randomized controlled trial.

Gou, He, Zhuo · 2026 · Frontiers in medicine

To investigate the effect and safety of astragalus injection at Neiguan (PC6) for chronic heart failure (CHF; HF) with qi-deficiency and blood-stasis syndrome, and its effect on the renin-angiotensin-aldosterone system (RAAS). A…

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Negative / Null Result ReportMedicine

Does Gestational Diabetes Increase Urinary Incontinence During Pregnancy? A Cross-Sectional Study of Symptom Patterns and Incontinence-Related Quality of Life.

Özel, Efiloğlu, Cim et al. · 2026 · Neurourology and urodynamics

This study aimed to evaluate the association between gestational diabetes mellitus and urinary incontinence during pregnancy, including symptom subtype, symptom severity, and incontinence-related quality of life. This cross-sectional study…

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Negative / Null Result ReportMedicine

Overcoming donor-specific anti-human leukocyte antigen antibodies with desensitisation in adult ex-vivo T-cell depleted haploidentical haematopoietic stem cell transplantation: a real-world analysis.

Tham, Linn, Koh et al. · 2026 · Transplantation and cellular therapy

The presence of anti-human leukocyte antigen (HLA) antibodies directed against donor HLA (HLA-DSA) in HLA-mismatched haematopoietic stem cell transplantation (HCT) can affect engraftment and transplant outcomes. Desensitisation treatment…

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Negative / Null Result ReportMedicine

Knowledge of oxygen therapy among healthcare professionals in non-intubated patients: a cross-sectional study in Somalia.

Duman Aydin, Küçükosman, Mohamed et al. · 2026 · BMC medical education

Although oxygen therapy (OT) is a fundamental and life-saving intervention in the management of hypoxemia, it may lead to serious complications when applied incorrectly or in an uncontrolled manner. The aim of this study is to evaluate the…

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Negative / Null Result ReportMedicine

ClassPass Memberships to Improve Well-Being Among Psychiatry Residents: A Pilot Randomized Controlled Trial.

Yang, Mueller, D'Andrea et al. · 2026 · Academic psychiatry : the journal of the American Association of Directors of Psychiatric Residency Training and the Association for Academic Psychiatry

Resident physicians experience high rates of depression, anxiety, burnout, and loneliness, yet few evidence-based interventions have been evaluated in this population. This randomized controlled pilot trial examined the feasibility,…

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