Negative / Null Result ReportMedicine
Suksard K, Millard GM, Teravichitchainan U et al. · 2025 · Transfusion and apheresis science : official journal of the World Apheresis Association : official journal of the European Society for Haemapheresis
Background ABO discrepancies, inconclusive results between forward and reverse typing, are one of the significant challenges encountered in transfusion medicine. Their frequency and etiologies can vary among ethnicities. This study aimed…
View details →Negative / Null Result ReportOpen accessMedicine
Hashem S, Murhega RB, Migabo PA · 2026 · Radiology case reports
The ectopic posterior pituitary represents a rare congenital malformation attributable to aberrant embryogenesis of the neurohypophysis. Although it may occur as an isolated anomaly, it is frequently concomitant with other congenital…
View details →Negative / Null Result ReportOpen accessMedicine
Ramasindrazana B, Rahalison ZA, Gauthier P et al. · 2025 · PLoS neglected tropical diseases
Background The plague, caused by Yersinia pestis, remains a critical public health issue, particularly in endemic regions like Madagascar. Rapid and accurate detection of this pathogen is essential for effective outbreak management and…
View details →Negative / Null Result ReportMedicine
Espada-Musitu D, Manero-Azua Á, Vado Y et al. · 2025 · Anales de pediatria
Advances in next-generation sequencing (NGS) technologies have made the detection of the molecular causes of paediatric diseases increasingly affordable, accessible and rapid. While exome sequencing and genome sequencing were until…
View details →Negative / Null Result ReportOpen accessMedicine
Paracino R, De Domenico P, Ricciuti RA et al. · 2025 · Surgical neurology international
Background Idiopathic normal pressure hydrocephalus (iNPH) is a benign neurologic condition with treatment response rates ranging only between 30 and 50%. Several studies have attempted to identify clinical or radiological predictive…
View details →Negative / Null Result ReportMedicine
Pelegrín-Mateo FJ, Zambrano CB, Vázquez EB et al. · 2025 · European journal of internal medicine
Cancer-associated thrombosis (CAT) remains a leading cause of morbidity and mortality among oncology patients, with an incidence influenced by tumor type, stage, treatment, and molecular characteristics. This review explores the molecular…
View details →Negative / Null Result ReportMedicine
Datta A, Katyayan I, Das KK et al. · 2025 · Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia
Parent Artery Occlusion (PAO) is a valid treatment choice in giant internal carotid artery (ICA) aneurysms of the cavernous segment when the preoperative balloon test occlusion (BTO) demonstrates an adequate cross circulation from the…
View details →Negative / Null Result ReportOpen accessMedicine
Stahlmann K, Reitsma JB, Zapf A · 2023 · Statistical methods in medical research
Most diagnostic studies exclude missing values and inconclusive results from the analysis or apply simple methods resulting in biased accuracy estimates. This may be due to the lack of availability or awareness of appropriate methods. This…
View details →Negative / Null Result ReportMedicine
Saber Tanha A, Hosseini S, Soltani E et al. · 2025 · Clinical nuclear medicine
Abstract A 47-year-old woman, recently diagnosed with breast cancer, underwent staging. A whole-body bone scan revealed an unexpected focal 99m Tc-MDP uptake in her right ovary. Extensive literature review suggested various malignant…
View details →Negative / Null Result ReportOpen accessMedicine
Dudnyk A, Tytarenko N, Lytvyniuk O et al. · 2026 · Therapeutic advances in infectious disease
Background Patients with multidrug-resistant tuberculosis (MDR-TB) receive treatment that is at least 20% less effective than drug-susceptible cases globally. Objectives The study evaluated the diagnostic accuracy of mfloDx MDR-TB assay…
View details →Negative / Null Result ReportMedicine
Mieites V, Fernández-Manteca MG, Santiuste Torcida I et al. · 2025 · Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy
This study explores the potential of conventional Raman spectroscopy and commonly used spectral analysis pipelines for rapid and straightforward assessment of degradation in serum samples resulting from storage delays. Serum samples from…
View details →Negative / Null Result ReportOpen accessMedicine
de Oliveira Castro Marques TR, Vidal SA, da Costa HA et al. · 2026 · Hematology, transfusion and cell therapy
Background Stroke, the most severe neurological complication of sickle cell disease, can result in irreversible sequelae and death. Transcranial Doppler combined with periodic blood transfusions reduces the chances of stroke by 90 %. In…
View details →Negative / Null Result ReportMedicine
Tu Y, Miao J, Wu Q et al. · 2025 · Respiratory medicine
Background Previous epidemiological studies have explored the association between obstructive sleep apnea (OSA) and osteoporosis (OP), with inconclusive results due to various biases. Herein, we sought to determine the causal association…
View details →Negative / Null Result ReportMedicine
Guarneri C, Reschini M, Pinna M et al. · 2024 · Journal of assisted reproduction and genetics
Purpose To evaluate whether a second biopsy, following a first diagnostic failure on blastocysts tested for preimplantation genetic testing for monogenic diseases (PGT-M), allows to obtain genetic diagnosis and to what extent this…
View details →Negative / Null Result ReportOpen accessMedicine
Su XY, Schroder A, Tse LA et al. · 2025 · BMC research notes
Background Sex hormones may play a role in the development of nasopharyngeal carcinoma (NPC), but the evidence is limited. Methods This case-control study collected information on sex hormonal and reproductive factors of 99 female incident…
View details →Failed Experiment ReportOpen accessMedicine
Jiménez-Martínez J, Alarcón-López F, Chirosa-Ríos LJ et al. · 2025 · Frontiers in sports and active living
Background Rehabilitation programs following an anterior cruciate ligament (ACL) injury tend to focus on improving conditional aspects such as biomechanics. Recently, some studies have analyzed the relationship between cognition and ACL…
View details →Negative / Null Result ReportOpen accessMedicine
Rosa ML, Bordignon C, Schuch JB et al. · 2026 · Diagnostics (Basel, Switzerland)
Background/Objectives : Formalin-fixed paraffin-embedded tissue is widely used in pathology and molecular diagnostics, yet its variable quality can critically influence the accuracy of sequencing-based analyses. This study investigated…
View details →Negative / Null Result ReportOpen accessMedicine
Gopalaswamy R, Kumar N, Vashistha H et al. · 2023 · Frontiers in public health
Introduction Truenat MTB-RIF assay (Truenat), a nucleic acid amplification test (NAAT), is a real-time polymerase chain reaction (RT-PCR) chip-based assay that can detect Mycobacterium tuberculosis ( Mtb ) and rifampicin (RIF) drug…
View details →Negative / Null Result ReportMedicine
Tavelli R, Callens M, Grootaert C et al. · 2024 · Trends in Food Science & Technology.
Microplastics (MPs) contaminate the global marine and terrestrial ecosystems. This environmental contamination can enter the food chain, with MPs found in drinking water, fishery products and other food categories. Consequently, ingestion…
View details →Negative / Null Result ReportMedicine
Juutilainen J, Khan MW, Naarala J et al. · 2024 · Occupational and environmental medicine
Objectives Studies assessing the association of adult cancers with extremely low frequency (ELF) magnetic fields (MF) have provided inconclusive results, probably affected by limitations such as low exposure levels, confounding and various…
View details →Failed Experiment ReportOpen accessMedicine
Graziani L, Genovese S, Genovesi ML et al. · 2025 · Molecular cytogenetics
Background Monosomy 18p (MIM: 146390) is a well-known chromosomal disorder associated with intellectual disability, short stature, and non-specific craniofacial features resulting from partial or total deletion of the short arm of…
View details →Negative / Null Result ReportOpen accessMedicine
Hernández-Cuellar E, Tsuchiya K, Medina-Contreras O et al. · 2025 · Journal of clinical medicine
Background/Objectives : Sepsis is a life-threatening condition characterized by an uncontrolled immune response due to systemic infections. It is responsible for millions of deaths worldwide. Although inflammasomes play an important role…
View details →Negative / Null Result ReportMedicine
Nielsen MK, Bartholdy ID, Kristensen KS et al. · 2025 · Veterinary parasitology
Equine strongylids are ubiquitous and can cause severe health issues. Anthelmintic resistance is widely common in cyathostomin parasites, and recent studies have documented increasing incidence of resistance to the macrocyclic lactone drug…
View details →Negative / Null Result ReportMedicine
MacCarrick G, Aradhya S, Bailey M et al. · 2024 · American journal of medical genetics. Part A
Molecular genetics enables more precise diagnoses of skeletal dysplasia and other skeletal disorders (SDs). We investigated the clinical utility of multigene panel testing for 5011 unrelated individuals with SD in the United States…
View details →Negative / Null Result ReportOpen accessMedicine
Karvasarski E, Park J, Savaris S et al. · 2026 · CJC open
Background Resting hemodynamic assessment of suspected pulmonary hypertension (PH) in older adults with cardiovascular risk factors may not effectively discriminate pre-capillary from post-capillary disease. Exercise right-heart…
View details →Negative / Null Result ReportMedicine
Crabtree D, Seidler K, Barrow M · 2025 · Clinical nutrition ESPEN
Background and aims Epidemiological studies have associated reduced bacterial diversity and abundance and food allergy. This mechanistic review investigated the link between gut dysbiosis and food allergy with a focus on the role of…
View details →Negative / Null Result ReportMedicine
Nohales M, Coello A, Martin A et al. · 2023 · Journal of assisted reproduction and genetics
Purpose To investigate whether embryo rebiopsy increases the yield of in vitro fertilization (IVF) cycles. Methods Retrospective study including 18,028 blastocysts submitted for trophectoderm biopsy and preimplantation genetic testing for…
View details →Negative / Null Result ReportMedicine
Cummings M, Madhavan S · 2024 · Experimental brain research
Ischemic Conditioning (IC) is a procedure involving brief periods of occlusion followed by reperfusion in stationary limbs. Blood Flow Restriction with Exercise (BFR-E) is a technique comprising blood flow restriction during aerobic or…
View details →Negative / Null Result ReportOpen accessMedicine
Salgotra M, Bharti N, Sinha V et al. · 2024 · Journal of pharmacy & bioallied sciences
Introduction Although PCOS affects reproductive health, its consequences on the outcome of pregnancies are still up for discussion. Comparing the pregnancy outcomes of women with PCOS to a control group was the goal of this retrospective…
View details →Negative / Null Result ReportMedicine
Linthorst J, Nivard M, Sistermans EA · 2024 · Cell reports
The properties of cell-free DNA (cfDNA) are intensely studied for their potential as non-invasive biomarkers. We explored the effect of common genetic variants on the concentration and fragmentation properties of cfDNA using a genome-wide…
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