Publications by authors named "Jacob Christensen"

Background And Aims: Statins and other lipid-modifying agents (LMAs) have traditionally been contraindicated during pregnancy due to concerns about harmful fetal effects; however, the risks associated with exposure to statins and other LMAs in human pregnancies remain unclear. Therefore, this study aimed to examine the associations between statin and LMA exposure in pregnancy and congenital malformations in offspring, while updating a 2022 meta-analysis with the results from the present study.

Methods: National registry data were linked for all pregnant women in Norway in 2005-18.

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In the phase 3 ECHELON-2 trial, brentuximab vedotin, cyclophosphamide, doxorubicin, and prednisone (BV-CHP) significantly improved progression-free survival (PFS) and overall survival (OS) compared with cyclophosphamide, doxorubicin, vincristine, and prednisone (CHOP) in patients with CD30+ peripheral T-cell lymphoma (PTCL), benefits that were maintained at 5 years. Interim positron emission tomography (PET) scan can be used to assess prognosis and risk stratify patients. The prognostic value of interim PET was assessed in this post hoc exploratory analysis from ECHELON-2 evaluating interim 18F-FDG PET scans after cycle 4 (PET4) and end-of-treatment-based response and correlated with PFS per investigator and OS.

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Ibrutinib was approved for relapsed/refractory (R/R) mantle cell lymphoma (MCL) based on high response rates in clinical trials, but it is unclear how effective ibrutinib is in the real-world setting. This study provides population-based response rates and survival estimates and characterization of prognostic indicators and adverse events (AEs) to ibrutinib for patients with R/R MCL. All patients diagnosed with MCL in Denmark from 2010 to 2022 were identified in the Danish Lymphoma Registry and screened for eligibility.

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Background: The impact of milk consumption on cardiovascular disease (CVD) risk or mortality is unclear, and specific comparisons between types of milk are scarce.

Objectives: We aimed to investigate the associations between milk consumption, measured in a large Norwegian cohort in 3 counties during 1974-1988, and CVD-related mortality and all-cause mortality and to compare the associations between whole (full-fat) and low-fat milk.

Methods: This population-based, prospective cohort study included adults invited to repeated health screenings in the Norwegian Counties Study (>80% attendance).

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Introduction: Tramadol is an opioid analgesic used to treat moderately severe pain. Overuse and recreational use of tramadol may cause seizures, but the extent of this problem remains unclear. This study evaluates admissions with tramadol-induced seizures (TIS) among young adults admitted to the emergency department (ED).

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Background: The risk of developing coronary artery disease (CAD) is increased in type 1 diabetes, due to accelerated atherosclerosis. The molecular mechanisms are yet to be unraveled, but potential functional and quantitative abnormalities in lipoproteins are suggested to be involved. Some individuals have coronary arteries free from atherosclerosis even after living with type 1 diabetes for many decades.

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Aims: Measures of left atrial (LA) function have demonstrated prognostic value in relation to incident atrial fibrillation. This study aimed to investigate the relationship between measures of LA function and the risk of incident atrial fibrillation (AF) in outpatients with HFrEF.

Methods And Results: Subjects were retrospectively included from a HF clinic and followed using the Danish National Patient Registry.

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Background And Aims: Sparse data exist on the risk of adverse pregnancy outcomes in women with familial hypercholesterolemia (FH). We investigated associations between FH and adverse pregnancy outcomes, and between statin exposure in pregnancy and adverse pregnancy outcomes among women with FH.

Methods: We studied 3869 pregnancies among 1869 women with genetically-proven FH and 68225 pregnancies among 33661 women from the general population.

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Clinical tools to guide treatment decisions in relapsed and refractory mantle cell lymphoma (R/R MCL) are limited. Moreover, the translational potential of circulating tumor DNA (ctDNA) remains largely unproven. We designed and applied panel-based duplex sequencing of ctDNA to study molecular determinants of response and outcome in 58 R/R MCL patients treated with venetoclax, lenalidomide, and rituximab.

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Background And Aims: Familial hypercholesterolemia (FH) is a genetic disorder characterized by elevated low-density lipoprotein cholesterol (LDL-C) and increased risk of premature coronary heart disease (CHD). While current LDL-C levels usually guides therapy, the cumulative exposure to LDL-C (the LDL-C burden) is suggested to offer a more precise estimate of cardiovascular risk in people with FH. Therefore, using real-world data, this study aimed to estimate the LDL-C burden at different ages in elderly FH patients with and without CHD, and to assess the LDL-C burden at CHD onset.

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Background And Aims: Chronic kidney disease (CKD) is often complicated by heart failure (HF), leading to increased mortality. Emerging evidence suggests that Tryptophan metabolites, through the Kynurenine pathway (KP), play a significant role in HF pathophysiology. Therefore, we explored the association of Tryptophan (TRP), Kynurenine (KYN), and the Kynurenine to Tryptophan ratio (KTR) with HF in CKD, hypothesizing a link between KP alterations and HF occurrence in this population.

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Background: Influenza infection has been associated with multiple cardiac complications including acute heart failure and myocardial infarction. The FluHeart study aims to uncover the potential effect of influenza infection on cardiac structure and function as assessed by echocardiography during hospitalization.

Methods: This prospective cohort study included hospitalized influenza patients of the 2021-2022 influenza season.

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Introduction: Previous studies identified genetic links between the TCF7L2 C/T variant rs7903146, type 2 diabetes (T2D), and obesity. We wished to deepen our understanding of how specific diets interact with this variant to affect blood metabolites, an aspect not previously investigated. Hence, we conducted a controlled study where individuals with different genotypes followed a Mediterranean (Med) or low-fat (LF) diet for 1 week.

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Background: Myocardial work is a novel measure of potential value for diagnosing coronary artery disease (CAD). It may therefore be useful in patients with chronic kidney disease (CKD), in whom the diagnostic work-up can be challenging.

Methods: This was a cross-sectional study of patients with CKD (G1-5, nondialysis-dependent).

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Article Synopsis
  • Higher maternal body mass index (BMI) is linked to metabolic issues and complications during pregnancy in women with obesity (BMI ≥ 30 kg/m).
  • In a study of 81 obese pregnant women, specific metabolic profiles in the early stages of pregnancy were analyzed to predict complications like gestational diabetes and preeclampsia.
  • Results indicated that certain fatty acid ratios impacted the risk of developing these complications, with some ratios increasing risk while others, particularly those involving omega-3 fatty acids, appeared to decrease it.
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Risk of cardiovascular disease (CVD) in patients with classical Hodgkin lymphoma (cHL) undergoing contemporary treatment is unclear. cHL patients ≥ 18 years at diagnosis treated with doxorubicin-containing chemotherapy between 2000 and 2022 were matched 1:5 with comparators on birth year, sex, and Charlson Comorbidity Index at time of matching (score of 0 or ≥ 1). Cause-specific cumulative incidence of a composite of CVDs with corresponding 95% confidence intervals (CIs) were computed with death and lymphoma relapse as competing events (i.

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Unlabelled: Evaluation of the Australian Triage Scale in patients who present to the emergency department with upper gastrointestinal bleeding BACKGROUND: Upper gastrointestinal bleeding (UGIB) is a common presentation to the emergency department (ED). Study aims were to evaluate the utility of the Australasian Triage Score (ATS) in patients presenting to the ED with UGIB.

Methods: This retrospective observational study included 356 patients over a 2-year period who presented to a metropolitan hospital ED.

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To improve the interpretation and utilisation of blood lipids, ketones and acylcarnitine concentrations as biomarkers in clinical assessments, more information is needed on their dynamic alterations in response to dietary intake and fasting. The aim of this intervention study was to characterise the changes in serum lipid, ketone and acylcarnitine concentrations 24 h after a standardised breakfast meal. Thirty-four healthy subjects (eighteen males and sixteen females) aged 20-30 years were served a breakfast meal (∼500 kcal, 36 E% fat, 46 E% carbohydrates, 16 E% protein, 2E% fibre), after which they consumed only water for 24 h.

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Article Synopsis
  • - Sales of over-the-counter decongestant nasal sprays in Denmark have doubled from 2011 to 2023.
  • - Prolonged use of these sprays can lead to risks like rhinitis medicamentosa, a condition that worsens nasal congestion.
  • - There is a crucial need for better patient education on safe usage and side effects, along with more research to help health authorities regulate these products effectively.
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Article Synopsis
  • - The study aimed to examine how the timing of influenza vaccinations (morning vs. later in the day) affects the immune response and overall health outcomes, particularly in a large trial comparing high-dose and standard-dose influenza vaccines.
  • - Researchers analyzed data from 12,477 participants and found that earlier vaccinations were linked to fewer hospitalizations for respiratory issues, regardless of the vaccine dosage, with statistically significant results.
  • - Although both high-dose and standard-dose vaccines showed similar effectiveness regardless of vaccination timing, the findings suggest that getting vaccinated earlier in the day could still be beneficial, warranting further investigation.
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Article Synopsis
  • - The study examines how switching between two different lipoprotein(a) assays (Roche vs. Siemens) affects the identification of individuals at risk based on their Lp(a) levels.
  • - Analyzing data from nearly 185,500 individuals, the Roche assay detected significantly more individuals with high Lp(a) levels compared to the Siemens assay, attributed to differences in calibration.
  • - This transition to a new assay can lead to important changes in clinical decision-making, especially for those near critical Lp(a) thresholds.
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Background: Influenza vaccination reduces the risk of adverse outcomes in patients with cardiovascular disease (CVD). We sought to evaluate whether the presence of CVD modified the relative effectiveness of the high-dose quadrivalent influenza vaccine (QIV-HD) versus standard-dose quadrivalent influenza vaccine (QIV-SD) in this prespecified analysis of the DANFLU-1 trial (Feasibility of Randomizing Danish Citizens Aged 65-79 Years to High-Dose Quadrivalent Influenza Vaccine Versus Standard-Dose Quadrivalent Influenza Vaccine in a Pragmatic Registry-Based Setting).

Methods: DANFLU-1 was a pragmatic, open-label, randomized feasibility trial of QIV-HD versus QIV-SD in adults aged 65 to 79 years during the 2021/2022 influenza season in Denmark.

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Background And Aim: Many children with an FH mutation also exhibit elevated lipoprotein(a) levels, which is an independent risk factor for atherosclerotic cardiovascular disease. Studies have reported higher levels of lipoprotein(a) in adult and middle-aged women than men. There is limited knowledge on the concentration and change of lipoprotein(a) levels in children with genetic FH, and therefore we investigated sex-differences in lipoprotein(a) level and change in lipoprotein(a) in girls and boys with genetically confirmed FH.

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