Publications by authors named "Vitezic D"

To provide insight into regulatory decision-making at the time of granting initial orphan designation by the Committee for Orphan Medicinal Products, we have conducted a retrospective analysis for viral vector-mediated gene therapies in rare non-oncological conditions with respect to the data provided to support the criteria to be met in successful applications. We found that a high proportion of non-clinical in vivo data was used for gene therapies, indicating earlier submissions of products that are at the stage of preclinical research and not in clinical development. Clinical data were submitted in only 13% of the applications, containing preliminary results derived from early-stage clinical trials in few patients.

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Traumatic brain injury (TBI), which is a global public health concern, can take various forms, from mild concussions to blast injuries, and each damage type has a particular mechanism of progression. However, TBI is a condition with complex pathophysiology and heterogenous clinical presentation, which makes it difficult to model for in vitro and in vivo studies and obtain relevant results that can easily be translated to the clinical setting. Accordingly, the pharmacological options for TBI management are still scarce.

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Article Synopsis
  • Spinal muscular atrophy (SMA) is a rare inherited disease that varies in symptoms and requires diverse care for affected patients, prompting a systematic literature review of pharmacoeconomic evaluations for existing therapies.
  • The review focused on studies published in English after 2016, analyzing 14 relevant studies for quality and reporting standards using established checklists, and highlighting the need for cost-effectiveness analysis even for high-cost treatments.
  • The findings stress the importance of establishing specific willingness to pay thresholds for orphan medicines to ensure that SMA patients have access to safe and effective therapies, while also emphasizing the necessity of considering new information in medication decisions.
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This report presents challenging psychopharmacotherapy management of a psychotic disorder in a patient with a delicate pharmacogenetic profile and drug-drug interactions. A 31-year old woman diagnosed with schizophrenia in 2017 was referred by her psychiatrist to a clinical pharmacologist for interpretation of a pharmacogenetic test and advice regarding optimal psychopharmacotherapy. In spite of adherence to aripiprazole, olanzapine, risperidone, and levomepromazine, and rational anxiolytic therapy, she still experienced anxiety, anhedonia, loss of appetite, sleeping problems, and auditory hallucinations with commands to harm herself.

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(1) Background: Data on combination or sequential treatment of spinal muscular atrophy (SMA) with disease-modifying drugs (DMDs) are missing and the latter field is poorly understood. The currently available data of patients on risdiplam previously treated with nusinersen are coming from exploratory research mainly focused on safety. Our aim was to investigate the real-world effectiveness (hypothesising non-inferiority) and safety profile of risdiplam in a paediatric-and-adult nusinersen-risdiplam spinal muscular atrophy switch cohort.

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Adoptive cell therapy (ACT), particularly chimeric antigen receptor (CAR)-T cell therapy, has emerged as a promising approach for targeting and treating rare oncological conditions. The orphan medicinal product designation by the European Union (EU) plays a crucial role in promoting development of medicines for rare conditions according to the EU Orphan Regulation.This regulatory landscape analysis examines the evolution, regulatory challenges, and clinical outcomes of genetically engineered ACT, with a focus on CAR-T cell therapies, based on the European Medicines Agency's Committee for Orphan Medicinal Products review of applications evaluated for orphan designation and maintenance of the status over a 10-year period.

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In 2000, the European Union (EU) introduced the orphan pharmaceutical legislation to incentivize the development of medicinal products for rare diseases. The Committee for Orphan Medicinal Products (COMP), the European Medicines Agency committee responsible for evaluation of applications for orphan designation (OD), received an increasing flow of applications in the field of gene therapies over the last years. Here, the COMP has conducted a descriptive analysis of applications regarding gene therapies in non-oncological rare diseases, with respect to (a) targeted conditions and their rarity, (b) characteristics of the gene therapy products proposed for OD, with a focus on the type of vector used, and (c) regulatory aspects pertaining to the type of sponsor and development, by examining the use of available frameworks offered in the EU such as protocol assistance and PRIME.

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Background: High heterogeneity exists in estimates of the share of and absolute costs of informal care (IC) for individuals diagnosed with dementia.

Objective: To assess the differences in the share of and absolute costs of IC between subpopulations defined by latent profiles of activities of daily living (ADLs), neuropsychiatric symptoms, and global cognitive functioning.

Methods: We performed a nested cross-sectional analysis of data collected from 2019-2021 at the Zagreb-Zapad Health Center, Zagreb, Croatia, from a sample of patients and their caregivers.

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(1) Background: To investigate the real-world effectiveness and safety profile of nusinersen in Croatian paediatric and adult spinal muscular atrophy (SMA) patients. (2) Methods: A retrospective and anonymous collection of relevant demographic and clinical data for all Croatian SMA patients treated with nusinersen and reimbursed by the Croatian Health Insurance Fund (CHIF) between April 2018 and February 2022 was performed through searching the CHIF database and studying the associated reimbursement documentation. All patients who received at least one dose of nusinersen were included in the baseline clinical-demographic overview and safety analysis, whereas only subjects who had completed six doses were included in the effectiveness analysis.

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Purpose: Arterial hypertension (AH) is associated with a high economic burden for the individual patient and for society in general. The study evaluates antihypertensives and their cost-effectiveness, comparing diuretics (D), beta-blockers (B), angiotensin converting enzyme inhibitors/angiotensin-II receptor blockers (A) and calcium channel blockers (C) with no intervention (NI).

Methods: The study included five health states in a Markov model.

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This review provides an overview of nonclinical in vivo models that can be used to support orphan designation in selected rare infectious diseases in Europe, with the aim to inform and stimulate the planning of nonclinical development in this area of often neglected diseases.

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Purpose: Possible factors that could influence changes in patterns of prescribing antihypertensives could be identified by monitoring national trends in hypertension treatment. The choice of pharmacologic treatment in people with hypertension has important therapeutic and financial implications, due to the fact that the financial costs associated with hypertension continue to increase. The aims of our study were to identify and analyze changes in the usage of antihypertensive drugs in Croatia from 2000 to 2016 and to identify the changes in prescribing patterns as well as mean prices per defined daily dose (DDD).

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While prescribing biosimilars to patients naive to a biologic treatment is a well-accepted practice, switching clinically stable patients from an originator to a biosimilar is an issue for clinicians. Well-designed clinical trials and real-world data which study the consequences of switching from an originator biologic treatment to its biosimilar alternative are limited, especially for monoclonal antibodies. Areas covered: A systematic literature review was conducted on PubMed to identify evidence of the consequences of switching from original biologics to biosimilars.

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Recombinant human erythropoietin (rhEpo) is a multi-functional drug with antioxidant potential. However, the underlying molecular mechanisms of its action are still unclear. The purpose of this study was to investigate the effects of rhEpo on the brain infarct volume as well as on the levels of the neuronal damage, oxidative stress parameters and active caspase-3, nuclear factor erythroid 2-related factor 2 (Nrf2) and haemeoxygenase-1 (HO-1) expressions in the hippocampi of rats exposed to the right middle cerebral artery occlusion (MCAO) for 1 hr.

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Aim: To develop a new method of health-economic analysis based on a marginal approach.

Methods: We tested the research hypothesis that a detailed comparative a priori incremental cost-effectiveness analysis provides the necessary input for budget impact analysis about the proper order of introduction of new therapies, and thus maximizes the cost-effectiveness bounded by the total budget constraint. For the analysis we chose a combination therapy for the treatment of hepatitis C virus (HCV) genotype 1 (GT1) infection, which was approved by the European Medicine Agency in 2015.

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Transferability of current evidence and expressing value of innovative pharmaceuticals according to health system objectives Due to the scarcity of healthcare resources, decision-makers often expect monetary benefits--including cost savings or productivity gain--from innovative medicines. Manufacturers try to fulfill this expectation by expressing the benefits of innovative technologies in monetary units citing approaches from the scientific literature. Unfortunately, currently available evidence has limited relevance and transferability in Central-Eastern European (CEE) countries.

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Objective: The aim of our study was to investigate the changes in drug usage and financial expenditure according to legal changes in Croatia during the period 2001 - 2008, especially considering pricing policy.

Materials: The data on outpatient drug usage during the studied period was obtained from the Croatian National Health Insurance (CNHI). CNHI maintains a database on drugs prescribed by primary health care physicians and dispensed by pharmacies.

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Reactive oxygen species are important cause of tissue injury during cerebral ischemia and reperfusion (I/R). Superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) are intracellular enzymes responsible for endogenous antioxidant defense of tissues affected by I/R. The aim of this study was to examine temporal and regional changes of SOD and GSH-Px activities in animals exposed to transient focal cerebral ischemia.

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A successful treatment of epilepsy depends on numerous factors such as etiology, genetics and environmental impact. An exact diagnosis, treatment and an adequate selection of antiepileptic drugs (AED) are important from the very beginning. The patient with symptomatic epilepsy caused by the brain tumor (low-grade astrocytoma in the left parietal lobe, surgically removed 17 years after the first manifestation of illness) is presented in this study.

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