Expert Opinion on Drug Safety最新文献

Introduction: Drug-induced parkinsonism (DIP) is one of the most common iatrogenic movement disorders. It is characterized by tremors, slowness of movement, and shuffling gait with postural instability, clinically indistinguishable from idiopathic Parkinson's disease. Prior exposure to antipsychotic medications or other dopamine receptor blocking agents (DRBAs) is required for the diagnosis.

Areas covered: This article aims to review the epidemiology, pathophysiology, clinical features, ancillary testing, and treatment of DIP. A literature search was undertaken in PubMed from January 2013 to January 2024.

Expert opinion: A clinician's suspicion of DIP must always be present when a patient develops acute to subacute onset of parkinsonism while taking a DRBA. As DIP can be indistinguishable from idiopathic PD, ancillary testing, such as DaTscans and skin biopsy searching for alpha-synuclein deposits, are often required to make a definitive diagnosis. When DIP develops, steps should be taken to discontinue the offending agent or, in the case of antipsychotics, dose reduction or change to an agent with lower risk for DIP, such as quetiapine or clozapine. Prophylactic treatment with anticholinergics is not indicated.

Background: Gemcitabine is widely used in the treatment of various cancers. This study aims to evaluate gemcitabine-associated adverse events (AEs) using the Food and Drug Administration Adverse Event Reporting System (FAERS) database.

Research design and methods: We analyzed data spanning from January 2004 to June 2023. Employing reporting odds ratio (ROR) and Bayesian confidence propagation neural network (BCPNN) algorithms, we identified AEs with positive signals in patients administered gemcitabine.

Results: Out of 16,623,939 reports, 23,645 involved gemcitabine as the 'primary suspected (PS)' resulting in 74,306 AEs. Consistent with the reports in the specification and clinical trials, thrombocytopenia, pyrexia, neutropenia, and anemia were the most common AEs. Notably, our study identified some unexpected AEs such as abdominal pain, pleural effusion, ascites, and gastrointestinal hemorrhage, among others. The most significant SOC was 'Blood and lymphatic system disorders'. The median onset time for gemcitabine-related AEs was 24 days (interquartile range [IQR] 6-82 days), with most cases occurring within the initial 30 days following gemcitabine administration.

Conclusion: Gemcitabine is associated with a broad spectrum of AEs affecting multiple organ systems, with a notable incidence of hospitalization. The study highlights both expected and unexpected AEs, which could enhance future clinical applications and safety of gemcitabine.

Background: Olaparib, niraparib, and rucaparib are the three primary poly (adenosine diphosphate-ribose) polymerase (PARP) inhibitors that are currently available in the market. Previous studies indicate different incidences of adverse events based on the PARP inhibitor or country.

Research design and methods: This study used data from the United States Food and Drug Administration Adverse Event Reporting System collected between January 2018 and December 2023. The data analyzed in this study involved patients receiving PARP inhibitors for treating ovarian cancer. A comparative analysis of the three PARP inhibitors was conducted using the reporting odds ratio (ROR) and the adjusted ROR (aROR) controlling for patient background differences.

Results: The aROR for niraparib was significant at > 1.000, including platelet count decreased (p < 0.001) and thrombocytopenia (p < 0.001) when olaparib was set as the reference. Conversely, the aROR for niraparib was significant at < 1.000, including anemia (p < 0.001). Additionally, significant differences were observed in various adverse events for rucaparib. Moreover, significant differences were observed when comparing between countries.

Conclusions: This study indicates that the types of adverse events may vary by PARP inhibitor and by country. These results will be beneficial in clinical practice.

Background: The primary objective of this research is to conduct an exhaustive evaluation of rimegepant with the Food and Drug Administration Adverse Event Reporting System (FAERS) repository.

Research design and methods: This study downloaded the reporting files related to rimegepant from the second quarter of 2020 to the first quarter of 2024. Disproportionality analysis was utilized to explore the relationship between rimegepant and adverse drug events (ADEs).

Results: This study analyzed 6659 ADE reports associated with rimegepant as the primary suspected (PS) drug. In the disproportionate analysis of system organ classes (SOCs), the significant signal for rimegepant was general disorders and administration site conditions.On the preferred terms level, 35 ADEs were identified following the exclusion. The top five ADEs with high signal strengths were medication overuse headache, nasal edema, tension headache, performance status decreased, and motion sickness. The most frequent ADEs were nausea, feeling abnormal, abdominal pain upper, somnolence, and hypersensitivity. In addition, we need to pay attention to the ADEs not mentioned in the instruction and clinically significant: vertigo, hyperacusis, somnolence, Raynaud's phenomenon, motion sickness, panic attack, and fear.

Conclusions: This study highlights previously unrecognized safety concerns associated with the use of rimegepant. These novel safety aspects suggest that while these treatments can be effective, additional risks may need further exploration.

Objective: Our study aims to assess alendronate-related adverse events (AEs) from the US FDA adverse event reporting system database.

Methods: The AE data associated with alendronate between the first quarter of 2004 and the first quarter of 2024 were selected. Various signal quantification methods, including the ROR, PRR, BCPNN, and EBGM, were applied for analysis.

Results: In 34,943 reports where alendronate was the primary suspected drug for the AE, 24 affected system organ classes and 1046 significant preferred terms were identified in this study. Several significant AEs beyond drug instructions with strong signals were determined, including low turnover osteopathy, fracture delayed union, fracture nonunion, loss of anatomical alignment after fracture reduction, fracture malunion, periprosthetic fracture, carotid bruit, oral fibroma, traumatic occlusion, and phlebolith. The median time to onset of alendronate-related AEs was 306 days (interquartile range [IQR] 12-1,461 days), and the majority of cases occurred 2 years later (18.80%) and within 30 days (14.49%).

Conclusions: The current study detected multiple potential new AE signals for alendronate, and more clinical research is required to further validate our results and clarify their associations.

Objective: By analyzing the signal mining of vandetanib AEs, it provides a reference for the rational clinical use of the drug.

Methods: This study provides signal detection and analysis of AEs associated with vandetanib using the FAERS from Q2 2011 to Q1 2023.

Results: Disproportionality analyses were conducted using the ROR and the MHRA method, with AEs categorized and described based on SOC and PT from the MedDRA. A total of 1,721 AEs reports identified vandetanib as the primary suspect. The analyses yielded 187 AEs signals across 20 SOCs categories, with 47 signals not previously reported in the vandetanib labeling. Additionally, the study analyzes factors influencing AEs. The results are as follows: There are significant differences in Investigations based on gender and nationality (p < 0.05); skin and subcutaneous tissue disorders and gastrointestinal disorders exhibit differences based on gender, age, and nationality (p < 0.05).

Conclusion: Common AEs signals identified align with those documented in the drug labeling. However, AEs such as tumor lysis syndrome, skin discoloration, and pigmentary disorders, which are not listed in the labeling, warrant special attention. It is essential that abnormalities in patients' skin and laboratory indicators are closely monitored and addressed promptly to safeguard medication safety.

Background: Tezepelumab is the first asthma biologic approved by the FDA that is not restricted by biomarker phenotypes. To date, there have been no studies reporting adverse events (AEs) associated with the real-world use of tezepelumab.

Research design and methods: This study included a comprehensive evaluation of AE reports related to tezepelumab since its approval (4th quarter of 2021 to 1st quarter of 2024) using the FAERS database, and compared with the currently reported clinical trial results (ClinicalTrials.gov).

Results: A total of 2153 reports of tezepelumab-related AEs were extracted. 256 preferred terms (PTs) of adverse reactions involving 27 system organ classes were identified. Significant AEs that were not reported on the drug label, such as 'dyspnea,' 'body temperature,' and 'tongue pruritus,' were reported. The median time to onset (TTO) of tezepelumab-related AEs was 35 days.The most frequent AEs in different sexes were 'arthralgia' and 'dyspnea,' with differences in signal strength ranking between the sexes.

Conclusions: This study represents the largest report to date on tezepelumab-related AEs, providing valuable insights into the potential side effects of tezepelumab. This work is crucial for the broader clinical application of this novel biologic and improving outcomes for patients with severe asthma.

Introduction: Breast cancer (BC) remains a prevalent and challenging malignancy among women, with significant advancements in treatment strategies over the past decades. Traditional chemotherapy has been progressively supplemented by newer modalities, including Antibody-Drug Conjugates (ADCs), Immunotherapy (IO), and Targeted Therapies (TT). Despite these advancements, there remains a critical need for strategies that maintain efficacy while minimizing toxicity.

Areas covered: This review delves into metronomic chemotherapy (MC), a novel approach involving the frequent administration of low-dose chemotherapy without prolonged breaks. We explore MC's impact across various breast cancer subtypes, such as Estrogen Receptor-Positive (ER+), HER2-Positive, and Triple-Negative Breast Cancer (TNBC). The literature reviewed highlights MC's mechanisms, including its anti-angiogenic, immunomodulatory, and antiproliferative effects, and its potential to improve treatment tolerability and address drug resistance.

Expert opinion: MC represents a promising adjunct to existing therapies, particularly in advanced or resistant cases. Its unique dosing schedule could offer sustained antitumor activity with reduced toxicity, making it a viable option for long-term management. However, further research is warranted to establish optimal dosing regimens, identify predictive biomarkers, and delineate its role within combination treatment strategies. Clarifying these aspects could refine MC's application, potentially reshaping treatment paradigms and enhancing patient outcomes in breast cancer management.

Introduction: Patient engagement in pharmacovigilance (PEP) has been shown to improve information on adverse drug reactions (ADRs), which may not be found in reports from healthcare professionals. This review shows that there is paucity of information on PEP in lower-middle-income countries (LMICs), particularly Africa. It provides insights into PEP in high-income countries (HICs) compared with Africa to help identify the disparities and system challenges in Africa.

Areas covered: We discussed the impact of PEP in HICs in comparison with Africa and incorporated two case studies: PEP in Ghana and medication error reporting in Africa using a scoping review. Recommendations were made to improve medication safety in Africa based on the identified disparities and system challenges.

Expert opinion: PEP is at an early stage in LMICs, particularly in Africa, with limited information available regarding patients' contributions to the safety of medicines. There should be further research into patients' roles in pharmacovigilance accompanied by advocacy efforts with policymakers, the development of sustainable funding strategies, benchmarking against experienced pharmacovigilance centers, and the use of technology to improve patient reporting.