BACKGROUND: ZFTA-RELA (formerly known as c11orf-RELA) fused supratentorial ependymoma (ZFTAfus ST-EPN) has been recognized as a novel entity in the 2016 WHO classification of CNS tumors and further defined in the recent 2021 edition. ZFTAfus ST-EPN was reported to portend poorer prognosis when compared to its counterpart, YAP1 ST-EPN in some previously published series. The aim of this study was to determine the treatment outcome of molecularly confirmed and conventionally treated ZFTAfus ST-EPN patients treated in multiple institutions. METHODS: We conducted a retrospective analysis of all pediatric patients with molecularly confirmed ZFTAfus ST-EPN patients treated in multiple institutions in 5 different countries (Australia, Canada, Germany, Switzerland, and Czechia). Survival outcomes were analyzed and correlated with clinical characteristics and treatment approaches. RESULTS: A total of 108 patients were collated from multiple institutions in 5 different countries across three continents. We found across the entire cohort that the 5- and 10-year PFS were 65% and 63%, respectively. The 5- and 10-year OS of this cohort of patients were 87% and 73%. The rates of gross total resection (GTR) were high with 84 out of 108 (77.8%) patients achieving GTR. The vast majority of patients also received post-operative radiotherapy, 98 out of 108 (90.7%). Chemotherapy did not appear to provide any survival benefit in our patient cohort. CONCLUSION: This is the largest study to date of contemporaneously treated molecularly confirmed ZFTAfus ST-EPN patients which identified markedly improved survival outcomes compared to previously published series. This study also re-emphasizes the importance of maximal surgical resection in achieving optimal outcomes in pediatric patients with supratentorial ependymoma.

• Publikační typ
• časopisecké články MeSH

BACKGROUND: Epidemiological studies have suggested positive associations for iron and red meat intake with risk of pancreatic ductal adenocarcinoma (PDAC). Inherited pathogenic variants in genes involved in the hepcidin-regulating iron metabolism pathway are known to cause iron overload and hemochromatosis. OBJECTIVES: The objective of this study was to determine whether common genetic variation in the hepcidin-regulating iron metabolism pathway is associated with PDAC. METHODS: We conducted a pathway analysis of the hepcidin-regulating genes using single nucleotide polymorphism (SNP) summary statistics generated from 4 genome-wide association studies in 2 large consortium studies using the summary data-based adaptive rank truncated product method. Our population consisted of 9253 PDAC cases and 12,525 controls of European descent. Our analysis included 11 hepcidin-regulating genes [bone morphogenetic protein 2 (BMP2), bone morphogenetic protein 6 (BMP6), ferritin heavy chain 1 (FTH1), ferritin light chain (FTL), hepcidin (HAMP), homeostatic iron regulator (HFE), hemojuvelin (HJV), nuclear factor erythroid 2-related factor 2 (NRF2), ferroportin 1 (SLC40A1), transferrin receptor 1 (TFR1), and transferrin receptor 2 (TFR2)] and their surrounding genomic regions (±20 kb) for a total of 412 SNPs. RESULTS: The hepcidin-regulating gene pathway was significantly associated with PDAC (P = 0.002), with the HJV, TFR2, TFR1, BMP6, and HAMP genes contributing the most to the association. CONCLUSIONS: Our results support that genetic susceptibility related to the hepcidin-regulating gene pathway is associated with PDAC risk and suggest a potential role of iron metabolism in pancreatic carcinogenesis. Further studies are needed to evaluate effect modification by intake of iron-rich foods on this association.

• MeSH
• adenokarcinom metabolismus   MeSH
• genotyp MeSH
• hepcidiny genetika   metabolismus   MeSH
• jednonukleotidový polymorfismus MeSH
• lidé středního věku MeSH
• lidé MeSH
• nádory slinivky břišní metabolismus   MeSH
• regulace genové exprese u nádorů fyziologie   MeSH
• senioři MeSH
• studie případů a kontrol MeSH
• vazebná nerovnováha MeSH
• železo metabolismus   MeSH
• Check Tag
• lidé středního věku MeSH
• lidé MeSH
• mužské pohlaví MeSH
• senioři MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH
• Research Support, N.I.H., Extramural MeSH
• Research Support, N.I.H., Intramural MeSH
• Research Support, U.S. Gov't, Non-P.H.S. MeSH

Popisujeme případ, kdy bylo snížení dávky perorálního přímého inhibitoru faktoru Xa rivaroxabanu samotným pacientem spojeno s neobvyklou tromboembolickou komplikací v podobě akutního infarktu myokardu s elevacemi úseku ST (ST-segment elevation myocardial infarction, STEMI) při nestabilních renálních funkcích a odhadované glomerulární filtraci pohybující se v i mimo rozmezí, kdy se doporučuje snížení dávky rivaroxabanu. Popisovaný případ zdůrazňuje důležitost správného dávkování rivaroxabanu u pacientů, jejichž doporučený dávkovací režim se pohybuje v blízkosti mezních hodnot, protože je sice dobře známo riziko krvácení při poklesu hodnot CrCl < 30 ml/min, ale zdá se, že v případě zlepšení hodnot CrCl hrozí zase nebezpečí poddávkování. Vzhledem k výše uvedenému je třeba pečlivě zvážit buď alternativní postup, nebo důsledné monitorování renálních funkcí, aby se předešlo potenciálně život ohrožujícím komplikacím v důsledku poddávkování nových perorálních antikoagulancií.

We report a case in which self-prescribed dose reduction of the orally active, direct factor Xa inhibitor, rivaroxaban, was associated with the unusual thrombo-embolic complication of acute ST-segment elevation myocardial infarction (STEMI) in the setting of a fluctuating renal function and estimated glomerular filtration falling in and out of the range where dose reduction of rivaroxaban is suggested. The case highlights the importance of dosing of rivaroxaban in those patients who sit around the recommended dosage regimen cut offs as they are well known to be at risk of bleeding should their CrCl fallng in and out of the range where dose reduction of rivaroxaban is suggested. The case high-lights the importance of dosing of rivaroxaban in those patients who sit around the recommended dosage regimen cut offs as they are well known to be at risk of bleeding should their CrCl fall <30 mL/min, but they also appear at risk of under-dosing should their CrCl improve. Due to the above-mentioned issue, careful consideration should be given to either alternative choices or close renal function monitoring, to avoid potentially life-threatening complications due to under-dosing of new oral anticoagulants.

BACKGROUND: We characterised the phenotypic consequence of genetic variation at the PCSK9 locus and compared findings with recent trials of pharmacological inhibitors of PCSK9. METHODS: Published and individual participant level data (300,000+ participants) were combined to construct a weighted PCSK9 gene-centric score (GS). Seventeen randomized placebo controlled PCSK9 inhibitor trials were included, providing data on 79,578 participants. Results were scaled to a one mmol/L lower LDL-C concentration. RESULTS: The PCSK9 GS (comprising 4 SNPs) associations with plasma lipid and apolipoprotein levels were consistent in direction with treatment effects. The GS odds ratio (OR) for myocardial infarction (MI) was 0.53 (95% CI 0.42; 0.68), compared to a PCSK9 inhibitor effect of 0.90 (95% CI 0.86; 0.93). For ischemic stroke ORs were 0.84 (95% CI 0.57; 1.22) for the GS, compared to 0.85 (95% CI 0.78; 0.93) in the drug trials. ORs with type 2 diabetes mellitus (T2DM) were 1.29 (95% CI 1.11; 1.50) for the GS, as compared to 1.00 (95% CI 0.96; 1.04) for incident T2DM in PCSK9 inhibitor trials. No genetic associations were observed for cancer, heart failure, atrial fibrillation, chronic obstructive pulmonary disease, or Alzheimer's disease - outcomes for which large-scale trial data were unavailable. CONCLUSIONS: Genetic variation at the PCSK9 locus recapitulates the effects of therapeutic inhibition of PCSK9 on major blood lipid fractions and MI. While indicating an increased risk of T2DM, no other possible safety concerns were shown; although precision was moderate.

• MeSH
• anticholesteremika škodlivé účinky   terapeutické užití   MeSH
• biologické markery krev   MeSH
• celogenomová asociační studie MeSH
• cévní mozková příhoda epidemiologie   prevence a kontrola   MeSH
• down regulace MeSH
• dyslipidemie krev   farmakoterapie   epidemiologie   genetika   MeSH
• hodnocení rizik MeSH
• infarkt myokardu epidemiologie   prevence a kontrola   MeSH
• inhibitory serinových proteinas škodlivé účinky   terapeutické užití   MeSH
• ischemie mozku epidemiologie   prevence a kontrola   MeSH
• jednonukleotidový polymorfismus * MeSH
• LDL-cholesterol krev   MeSH
• lidé MeSH
• PCSK9 inhibitory MeSH
• proproteinkonvertasa subtilisin/kexin typu 9 genetika   MeSH
• randomizované kontrolované studie jako téma MeSH
• rizikové faktory MeSH
• výsledek terapie MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH
• multicentrická studie MeSH
• práce podpořená grantem MeSH
• Research Support, N.I.H., Extramural MeSH