Publications by authors named "Magdalena Mroczek"

Introduction: Biallelic pathogenic variants in the gene are associated with familial lipoprotein lipase (LPL) deficiency. Homozygotes exhibit very severe hypertriglyceridemia (HTG) already in childhood, with phenotypic features such as pancreatitis, abdominal pain and xanthomata. Recent studies showed that HTG levels varied greatly between monoallelic pathogenic/likely pathogenic variant carriers.

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The bilateral interaction between the brain and the gut has recently been on the spectrum of researchers' interests, including complex neural, endocrinological, and immunological signaling pathways. The first case reports and clinical studies have already reported that delivering microbes through fecal microbial transplantation (FMT) may alleviate symptoms of psychiatric disorders. Therefore, modifying the gut microbiota through FMT holds promise as a potential treatment for psychiatric diseases.

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Hereditary myopathy with lactic acidosis due to Iron-Sulfur Cluster Assembly Enzyme (ISCU) deficiency is a rare disorder of energy metabolism characterized clinically by myopathy with exercise intolerance, and biochemically by deficiencies of skeletal muscle mitochondrial respiratory chain enzymes. ISCU protein plays an important role in iron-sulphur clusters (Fe-S) assembly and is therefore essential for the activity of mitochondrial Fe-S proteins such as succinate dehydrogenase and aconitase. Recessive hypomorphic alleles have been associated with hereditary myopathy with lactic acidosis, also known as Swedish-type myopathy.

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Lung cancer with the highest number of new cases diagnosed in Europe and in Poland, remains an example of malignancy with a very poor prognosis despite the recent progress in medicine. Different treatment strategies are now available for cancer therapy based on its type, molecular subtype and other factors including overall health, the stage of disease and cancer molecular profile. Immunotherapy is emerging as a potential addition to surgery, chemotherapy, radiotherapy or other targeted therapies, but also considered a mainstay therapy mode.

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Background: The Neurostatus-Expanded Disability Status Scale (EDSS) is the most frequently used measure of disability in multiple sclerosis (MS) trials. However, EDSS scores ⩾4.5 are mainly based on ambulation and may fail to capture relevant disability patterns in other functional domains.

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Human papillomaviruses (HPVs) are among the most diverse viral families that infect humans. Fortunately, only a small number of closely related HPV types affect human health, most notably by causing nearly all cervical cancers, as well as some oral and other anogenital cancers, particularly when infections with high-risk HPV types become persistent. Numerous viral polymerase chain reaction-based diagnostic methods as well as sequencing protocols have been developed for accurate, rapid, and efficient HPV genotyping.

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Background: Alpha-actinin-2, a protein with high expression in cardiac and skeletal muscle, is located in the Z-disc and plays a key role in sarcomere stability. Mutations in ACTN2 have been associated with both hypertrophic and dilated cardiomyopathy and, more recently, with skeletal myopathy.

Methods: Genetic, clinical, and muscle imaging data were collected from 37 patients with an autosomal dominant ACTN2 myopathy belonging to 11 families from Spain and Belgium.

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Background: Neurostatus-Expanded Disability Status Scale (EDSS) is the standard measure used to assess impairment and disability in multiple sclerosis (MS) trials but requires trained expert neurologists.

Objectives: This study aims to evaluate the concordance of Neurostatus-EDSS assessments from specially trained health care professionals (HCPs) and standardized trained neurologists.

Methods: A Swiss multicenter, randomized, cross-over study with 100 people with MS.

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There is an interplay between plasma cells, endometritis, and infertility, particularly in the context of in vitro fertilization (IVF) failure. This narrative literature review explains the pathophysiology of endometritis, detailing the involvement of various immune cells, cytokines, and chemokines in the regulation of inflammatory responses within the uterine endometrium. Here, we discuss the physiological role of plasma cells in immunity and their detection as markers of chronic endometritis, a disease associated with reproductive disorders.

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Article Synopsis
  • The study investigates the effectiveness of whole exome sequencing in diagnosing genetic causes of epilepsy in adult patients in Poland, revealing a diagnostic yield of 8.6% using one classification method and 17% with another.
  • A total of 151 adult patients from various clinical centers were analyzed, all previously diagnosed with epilepsy and lacking genetic diagnoses, and the research identified most variants linked to epilepsy-related genes.
  • The findings suggest that whole exome sequencing is more effective than traditional gene panels and highlight the importance of considering genetic factors in adults with epilepsy, especially those showing early onset or developmental delays.
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  • Biallelic expansions of the AAGGG repeat in the RFC1 gene have been linked to conditions like cerebellar ataxia and neuropathy.
  • A study tested 259 inflammatory neuropathy patients and 243 healthy controls for these expansions, using specific PCR methods.
  • Results showed no significant presence of the AAGGG repeat expansion in patients, indicating that it is not a contributing factor to inflammatory neuropathies, thus routine genetic screening for this mutation is unnecessary in these cases.
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Oncolytic virus (OV) therapy has emerged as a promising frontier in cancer treatment, especially for solid tumours. While immunotherapies like immune checkpoint inhibitors and CAR-T cells have demonstrated impressive results, their limitations in inducing complete tumour regression have spurred researchers to explore new approaches targeting tumours resistant to current immunotherapies. OVs, both natural and genetically engineered, selectively replicate within cancer cells, inducing their lysis while sparing normal tissues.

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Objective: Insufficient sleep is linked to several health problems. Previous studies on the effects of sleep deprivation on cortical excitability using conventional transcranial magnetic stimulation (TMS) included a limited number of modalities, and few inter-stimulus intervals (ISIs) and showed conflicting results. This study aimed to investigate the effects of sleep deprivation on cortical excitability through threshold-tracking TMS, using a wide range of protocols at multiple ISIs.

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Heterozygous carriers of pathogenic/likely pathogenic variants in autosomal recessive disorders seem to be asymptomatic. However, in recent years, an increasing number of case reports have suggested that mild and unspecific symptoms can occur in some heterozygotes, as symptomatic heterozygotes have been identified across different disease types, including neurological, neuromuscular, hematological, and pulmonary diseases. The symptoms are usually milder in heterozygotes than in biallelic variants and occur "later in life".

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Article Synopsis
  • Population genetic screening for cancer has sparked debates over costs and ethical concerns, with varying standards across countries focusing primarily on those with a personal or family cancer history.
  • In a study involving 1076 Polish individuals, a broad analysis of genetic variants uncovered 19,551 rare variants in genes linked to cancer, with a notably low frequency of pathogenic variants like those in BRCA1/BRCA2.
  • The study highlights challenges in accurately assessing the pathogenicity of rare variants and suggests the need for further research to improve understanding of variant frequency and implications for population-based whole genome screening.
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As a scientific community we assumed that exome sequencing will elucidate the basis of most heritable diseases. However, it turned out it was not the case; therefore, attention has been increasingly focused on the non-coding sequences that encompass 98% of the genome and may play an important regulatory function. The first WGS-based datasets have already been released including underrepresented populations.

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PURA-related neurodevelopmental disorders (PURA-NDDs) are a rare genetic disease caused by pathogenic autosomal dominant variants in the PURA gene or a deletion encompassing the PURA gene. PURA-NDD is clinically characterized by neurodevelopmental delay, learning disability, neonatal hypotonia, feeding difficulties, abnormal movements, and epilepsy. It is generally considered to be central nervous system disorders, with generalized weakness, associated hypotonia, cognitive and development deficits in early development, and seizures in late stages.

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The number of cases of pancreatic cancers in 2019 in Poland was 3852 (approx. 2% of all cancers). The course of the disease is very fast, and the average survival time from the diagnosis is 6 months.

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The European Society of Human Genetics—Young Committee (ESHG-Y) aims to support young human geneticists by developing strategies and programs for better education and creating a strong network in all European countries. In this report, we present the ESHG-Y projects conducted since its conception. We organized the educational sessions at the ESHG Annual Conference, the European Dysmorphology Meetings, and a virtual session in collaboration with the European Board of Medical Genetics (EBMG).

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Undoubtedly, genetic factors play an important role in susceptibility and resistance to COVID-19. In this study, we conducted the GWAS analysis. Out of 15,489,173 SNPs, we identified 18,191 significant SNPs for severe and 11,799 SNPs for resistant phenotype, showing that a great number of loci were significant in different COVID-19 representations.

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Spinal muscular atrophy is a severe neuromuscular disorder with an autosomal recessive inheritance pattern. The disease-causing gene is SMN1, and its paralogue, SMN2, is a disease course modifier. Both genes SMN1 and SMN2 show over 99.

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