Drugs in Research & Development最新文献

{"title":"Trametinib Sensitivity is Defined by a Myeloid Differentiation Profile in Acute Myeloid Leukemia.","authors":"Mathieu Quesnel-Vallières, David C Schultz, Alena Orlenko, Yancy Lo, Jason Moore, Marylyn Ritchie, David Roth, Martin Carroll, Yoseph Barash, Kristen W Lynch, Sara Cherry","doi":"10.1007/s40268-024-00491-5","DOIUrl":"10.1007/s40268-024-00491-5","url":null,"abstract":"<p><strong>Background and objective: </strong>Acute myelogenous leukemia (AML) is a common blood cancer marked by heterogeneity in disease and diverse genetic abnormalities. Additional therapies are needed as the 5-year survival remains below 30%. Trametinib is a mitogen-activated extracellular signal-regulated kinase (MEK) inhibitor that is widely used in solid tumors and also in tumors with activating RAS mutations. A subset of patients with AML carry activating RAS mutations; however, a small-scale clinical trial with trametinib showed little efficacy. Here, we sought to identify transcriptomic determinants of trametinib sensitivity in AML.</p><p><strong>Methods: </strong>We tested the activity of trametinib against a panel of tumor cells from patients with AML ex vivo and compared this with RNA sequencing (RNA-Seq) data from untreated blasts from the same patient samples. We then used a correlation analysis between gene expression and trametinib sensitivity to identify potential biomarkers predictive of drug response.</p><p><strong>Results: </strong>We found that a subset of AML tumor cells were sensitive to trametinib ex vivo, only a fraction of which (3/10) carried RAS mutations. On the basis of our RNA-Seq analysis we found that markers of trametinib sensitivity are associated with a myeloid differentiation profile that includes high expression of CD14 and CLEC7A (Dectin-1), similar to the gene expression profile of monocytes. Further characterization confirmed that trametinib-sensitive samples display features of monocytic differentiation with high CD14 surface expression and were enriched for the M4 subtypes of the FAB classification.</p><p><strong>Conclusions: </strong>Our study identifies additional molecular markers that can be used with molecular features including RAS status to identify patients with AML that may benefit from trametinib treatment.</p>","PeriodicalId":49258,"journal":{"name":"Drugs in Research & Development","volume":" ","pages":"489-499"},"PeriodicalIF":2.2,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11456044/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142308896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Melatonin Bioavailability After Oral Administration of a New Delayed-Release Form in Healthy Male Volunteers.","authors":"Samira Ait Abdellah, Caroline Gal, Isabelle Guinobert, Valérie Bardot, Véronique Raverot, Annarita Vitacca, Claude Blondeau, Bruno Claustrat","doi":"10.1007/s40268-024-00482-6","DOIUrl":"10.1007/s40268-024-00482-6","url":null,"abstract":"<p><strong>Background: </strong>Two main types of galenic formulation, immediate release and prolonged release, have been developed to optimize melatonin bioavailability. We recently described the kinetic profile of a prolonged-release form generating a peak of plasma melatonin 1 h (T_max) after intake, followed by a prolonged decay over time. We have developed a new oral form of melatonin with the aim of producing a melatonin peak several hours after intake.</p><p><strong>Objective: </strong>The objective is to investigate melatonin bioavailability after administration of this new delayed-release form (DR form).</p><p><strong>Methods: </strong>In this single-centre open-label study, 12 healthy male volunteers received one tablet of the DR form containing 1.9 mg melatonin, 10 mg zinc and 200 mg lemon balm extract (Melissa officinalis L aerial parts). Blood samples were collected for 12 h, beginning at 8:00 am. Plasma concentrations of melatonin and 6-sulfatoxymelatonin (6-SMT), the main hepatic melatonin metabolite, were determined by radioimmunoassay.</p><p><strong>Results: </strong>A progressive increase in plasma melatonin concentrations was observed from 20 min and a peak about 3 h after intake (C_max 740 ± 824 pg/mL; T_max 179 ± 60 min). Concentrations remained high between 140 and 220 min, the concentration remaining physiologically significant (over 100 pg/mL) up to 7 h after intake. The DR form was well tolerated.</p><p><strong>Conclusions: </strong>The melatonin release profile was consistent with what was anticipated for the DR form. The DR form generated a 2 h delayed T_max compared with a prolonged-release form previously evaluated. This suggests that the DR form is suitable for the treatment of certain sleep disorders such as short sleep duration or early awakening.</p><p><strong>Trial registry: </strong>Registration number: NCT05419466.</p>","PeriodicalId":49258,"journal":{"name":"Drugs in Research & Development","volume":" ","pages":"415-423"},"PeriodicalIF":2.2,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11456059/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142037513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative Analytical Evaluation of the Proposed Biosimilar FYB206 and its Reference Medicinal Product Keytruda^®.","authors":"Jakob C Stüber, Kerstin Uhland, Alwin Reiter, Steffen Jakob, Florian Wolschin","doi":"10.1007/s40268-024-00485-3","DOIUrl":"10.1007/s40268-024-00485-3","url":null,"abstract":"<p><strong>Background and objective: </strong>Biological medicinal products improve patients' lives, but access is limited, mainly due to high costs. Patents for many existing biological products are expiring, and generic versions, which are referred to as biosimilars, are produced to serve as an alternative to the reference medicinal product (RMP) cutting down the costs and expanding access. The present paper assesses the analytical similarity between Formycon's FYB206 pembrolizumab biosimilar candidate and Keytruda^®, an RMP that is approved to treat various types of cancer, with the intention of determining FYB206's suitability to enter clinical biosimilar trials.</p><p><strong>Methods: </strong>Monoclonal antibodies (mAbs) are biological medicinal products that are characterized by a high overall heterogeneity. Due to the complex nature of these molecules, a comprehensive comparative analytical assessment was designed to demonstrate analytical similarity in all clinically relevant quality attributes between RMP and the corresponding biosimilar candidate. This exercise addresses physicochemical, biophysical as well as functional characteristics.</p><p><strong>Results: </strong>The comparative analytical evaluation results demonstrate that the proposed biosimilar is structurally and functionally highly similar to the RMP, showing only minor differences for some quality attributes that are justified to be noncritical for clinical efficacy and safety.</p><p><strong>Conclusion: </strong>Based on physicochemical and biological characteristics, FYB206 is suitable to enter the clinical phase.</p>","PeriodicalId":49258,"journal":{"name":"Drugs in Research & Development","volume":" ","pages":"447-464"},"PeriodicalIF":2.2,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11456019/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142127135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Chronic Dolutegravir Administration on the Trace Amine Profile in Wistar Rats.","authors":"Natasha Henning, Tracy A Kellermann, Carine Smith","doi":"10.1007/s40268-024-00484-4","DOIUrl":"10.1007/s40268-024-00484-4","url":null,"abstract":"<p><strong>Background: </strong>Dolutegravir (DTG), an integrase strand inhibitor, is currently used as the first-line treatment for HIV. Despite relatively poor tissue penetration, the risk of adverse effects in metabolic and excretory systems should be considered. The trace aminergic system and trace amines are emerging as relevant role players in many chronic diseases that are commonly diagnosed but poorly understood. Trace amines are biogenic amines that are endogenously produced and can also be ingested by the intake of trace amine-rich food. Trace amines are known to differentially regulate inflammatory and neurological outcome.</p><p><strong>Objective: </strong>This study investigated the effects of DTG on the trace amine profile in a wistar rat model.</p><p><strong>Methods: </strong>A total of 24 healthy wistar rats were randomly divided into four experimental groups: male and female controls and male and female DTG-treated. Blood and tissue samples were collected following a 12-week DTG administration study. Liquid chromatography-tandem mass spectroscopy (LC-MS/MS) was used to determine trace amine concentrations in urine, plasma, brain, and gastrointestinal tissue.</p><p><strong>Results: </strong>Current data illustrate that polyamines differ significantly (p < 0.05) between males and females in various matrices. DTG significantly (p < 0.05) reduced jejunal tyramine and urinary synephrine levels.</p><p><strong>Conclusion: </strong>Data do not raise major concerns about DTG in the context of the trace amine profile. However, given the importance of the dysregulated trace amine profile in various diseased states, including HIV, current data warrant clinical investigation to further evaluate the significance of DTG-associated effects on the trace amine profile.</p>","PeriodicalId":49258,"journal":{"name":"Drugs in Research & Development","volume":" ","pages":"435-445"},"PeriodicalIF":2.2,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11455829/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142037467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clinical Assessment of Breast Cancer Resistance Protein (BCRP)-Mediated Drug-Drug Interactions of Sepiapterin with Curcumin and Rosuvastatin in Healthy Volunteers.","authors":"Lan Gao, Diksha Kaushik, Kimberly Ingalls, Sarah Milner, Neil Smith, Ronald Kong","doi":"10.1007/s40268-024-00488-0","DOIUrl":"10.1007/s40268-024-00488-0","url":null,"abstract":"&lt;p&gt;&lt;strong&gt;Background and objective: &lt;/strong&gt;Sepiapterin, also known as PTC923 and CNSA-001, is a synthetic form of endogenous sepiapterin being developed as a novel oral treatment for phenylketonuria. Sepiapterin is a natural precursor of tetrahydrobiopterin (BH&lt;sub&gt;4&lt;/sub&gt;) and, when orally administered, is converted to BH&lt;sub&gt;4&lt;/sub&gt; via the pterin salvage pathway. In vitro studies have demonstrated that both sepiapterin and BH&lt;sub&gt;4&lt;/sub&gt; are both substrates and inhibitors of the breast cancer resistance protein (BCRP) transporter. This phase I study investigated BCRP-mediated drug-drug interactions of sepiapterin as a victim and as a perpetrator.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Methods: &lt;/strong&gt;An open-label, fixed-sequence, four-period, crossover, single-dose study was conducted in adult male and female healthy volunteers (18-55 years of age). In a given treatment period, subjects received a single oral dose of sepiapterin (20 mg/kg), sepiapterin (20 mg/kg) plus curcumin (2 g), rosuvastatin (10 mg), or rosuvastatin (10 mg) plus sepiapterin (60 mg/kg). The pharmacokinetics of sepiapterin, its metabolite BH&lt;sub&gt;4&lt;/sub&gt;, and rosuvastatin were studied, and geometric mean ratios of exposures in the presence and absence of the BCRP inhibitor curcumin or sepiapterin were estimated. The presence of the BCRP c.421C&gt;A polymorphism was evaluated in all subjects.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Results: &lt;/strong&gt;A total of 29 subjects were enrolled and included in the safety analysis. Among them, 26 subjects were included in the pharmacokinetic and drug-drug interaction analyses. Following oral administration 20 mg/kg sepiapterin, sepiapterin was rapidly and extensively converted to BH&lt;sub&gt;4&lt;/sub&gt;, and BH&lt;sub&gt;4&lt;/sub&gt; maximum observed concentration (415.0 ng/mL) was observed 4.95 h (time to maximum observed concentration) post-dose. Sepiapterin maximum observed concentration and area under the concentration-time curve from time 0 to time of the last quantifiable measurement or the last sample collection time (AUC&lt;sub&gt;last&lt;/sub&gt;) were &lt;1% of BH&lt;sub&gt;4&lt;/sub&gt; values. Coadministration of the BCRP inhibitor curcumin (2 g) increased BH&lt;sub&gt;4&lt;/sub&gt; maximum observed concentration, AUC&lt;sub&gt;last&lt;/sub&gt;, and area under the concentration-time curve from time 0 extrapolated to infinity by 24%, 21%, and 20%, respectively. When sepiapterin was coadministered with the BCRP substrate rosuvastatin, there was no effect on the pharmacokinetics of rosuvastatin. BCRP c.421C/A carriers (n = 4) had higher plasma exposures of BH&lt;sub&gt;4&lt;/sub&gt; (1.39 × for AUC&lt;sub&gt;last&lt;/sub&gt;) and rosuvastatin (1.61 × for AUC&lt;sub&gt;last&lt;/sub&gt;) than c.421C/C carriers (n = 22). Greater increases in BH&lt;sub&gt;4&lt;/sub&gt; exposures (1.33 vs 1.18 for AUC&lt;sub&gt;last&lt;/sub&gt;) were observed in c.421C/A carriers compared with c.421C/C carriers when sepiapterin was coadministered with curcumin. All treatments were well tolerated during the study.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Conclusions: &lt;/strong&gt;Oral coadministration of the BCRP inhibitor curcumin slightly increased the ","PeriodicalId":49258,"journal":{"name":"Drugs in Research & Development","volume":" ","pages":"477-487"},"PeriodicalIF":2.2,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11455768/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142308895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bioequivalence and Safety of Bilastine 20 mg Orodispersible Tablets and Conventional Tablets: A Randomized, Single-Dose, Two-Period Crossover Study in Healthy Volunteers Under Fasting Conditions.","authors":"Manuel Román, Dolores Ochoa, Samuel Martin, Sergio Luquero, Inmaculada Gilaberte, Paula Arranz, Carlos Sánchez","doi":"10.1007/s40268-024-00480-8","DOIUrl":"10.1007/s40268-024-00480-8","url":null,"abstract":"<p><strong>Background and objective: </strong>Orodispersible tablets (ODT) rapidly dissolve in the oral cavity and can improve patient's convenience. This pharmacokinetic study assessed the bioequivalence of a novel 20 mg ODT formulation of bilastine compared with bilastine 20 mg tablets in healthy volunteers under fasting conditions.</p><p><strong>Methods: </strong>A phase I, single-center, open-label, two-period, two-sequence crossover randomized clinical trial was conducted. The study comprised two periods, in which participants were administered a single oral dose of bilastine 20 mg in the form of ODT as the test product, or conventional tablets as the reference product, and a washout of 7 days between each period. Blood samples were collected for up to 72 h. Bioequivalence was established if the 90% confidence intervals of the C_max and AUC_0-t were within the acceptance range (80-125%). Safety was evaluated at the follow-up visit (days 4-7 after the second dose) and throughout the study.</p><p><strong>Results: </strong>A total of 42 healthy volunteers were randomized, and 41 completed the study. Pharmacokinetic parameters were comparable for both formulations after a single dose of 20 mg. Bilastine ODT and conventional tablets were bioequivalent as the 90% confidence intervals of the test over reference ratios were within the predefined range (80-125%). Both formulations were well tolerated and showed a similar safety profile.</p><p><strong>Conclusions: </strong>Bilastine ODT was bioequivalent to the reference treatment formulated as conventional tablets when administered as a single oral dose of 20 mg under fasting conditions. Both formulations showed a similar tolerability and safety profile, with no serious adverse events or significant analytical alterations reported.</p><p><strong>Trial registration: </strong>2019-004071-39. Date of authorization: 10 December 2019.</p>","PeriodicalId":49258,"journal":{"name":"Drugs in Research & Development","volume":" ","pages":"405-414"},"PeriodicalIF":2.2,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11456049/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141861403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pharmacokinetics, Mass Balance, and Biotransformation of [¹⁴C]tinengotinib, A Novel Multi-target Kinase Inhibitor, in Healthy Subjects.","authors":"Shumao Ni, Sheng Ma, Yingying Yu, Zhenwen Yu, Yujia Zhu, Xiaofen Sun, Lin Li, Caixia Sun, Hui Wang, Peng Peng, Zheming Gu, Hua Zhang, Frank Wu, Liyan Miao, Jean Fan","doi":"10.1007/s40268-024-00486-2","DOIUrl":"10.1007/s40268-024-00486-2","url":null,"abstract":"<p><strong>Background and objective: </strong>Tinengotinib, a novel multi-target small molecule kinase inhibitor, is currently undergoing phase II clinical trial in the USA and China. The purpose of this open-label study was to investigate the absorption, metabolism, and excretion of [¹⁴C]tinengotinib following a single oral dose in healthy subjects.</p><p><strong>Methods: </strong>Six healthy male subjects received a single oral dose of [¹⁴C]tinengotinib capsules at 10 mg/100 µCi, and blood, urine, and feces samples were collected. Phenotyping experiments were further conducted to confirm the enzymes involved in its metabolism.</p><p><strong>Results: </strong>Tinengotinib was rapidly absorbed in plasma with a time to peak drug concentration (T_max) of 1.0-4.0 h post-dose and a long terminal half-life (t_½) of 23.7 h. Blood-to-plasma radioactivity concentration ratios across timepoints ranged from 0.780 to 0.827, which indicated minimal association of radioactivity with blood cells. The mean cumulative excreted radioactivity was 99.57% of the dose, including 92.46% (68.65% as unchanged) in feces and 7.11% (0.28% as unchanged) in urine. In addition to unchanged tinengotinib, a total of 11 radioactive metabolites were identified in plasma, urine, and feces. The most abundant circulating radioactivity was the parent drug in plasma, which comprised 88.23% of the total radioactivity area under the concentration-time curve (AUC). Metabolite M410-3 was a major circulating metabolite, accounting for 5.38% of the parent drug exposure and 4.75% of the total drug-related exposure, respectively. All excreted metabolites accounted for less than 5.10% and 1.82% of the dose in feces and urine, respectively. In addition, no unique metabolites were observed in humans. Tinengotinib was metabolized mainly via CYP3A4.</p><p><strong>Conclusions: </strong>Overall, tinengotinib demonstrated a complete mass balance with limited renal excretion, no disproportionate blood metabolism, and slow elimination, primarily through the fecal route. The results of this study provide evidence to support the rational use of tinengotinib as a pharmacotherapeutic agent.</p><p><strong>Registration: </strong>ChinadrugTrials.org.cn identifier: CTR20212852.</p>","PeriodicalId":49258,"journal":{"name":"Drugs in Research & Development","volume":" ","pages":"465-476"},"PeriodicalIF":2.2,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11455736/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142134212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Damoctocog Alfa Pegol, a PEGylated B-domain Deleted Recombinant Extended Half-life Factor VIII for the Treatment of Hemophilia A: A Product Review.","authors":"Mark T Reding, Shadan Lalezari, Gili Kenet, Giovanni Di Minno, Jonathan Ducore, Alexander Solms, Anita Shah, Pål André Holme, Lone H Poulsen, Karina Meijer, Mindy Simpson, Maria Elisa Mancuso","doi":"10.1007/s40268-024-00481-7","DOIUrl":"10.1007/s40268-024-00481-7","url":null,"abstract":"<p><p>Damoctocog alfa pegol (BAY 94-9027, Jivi^®), is a site-specifically PEGylated, extended half-life recombinant factor VIII (FVIII) that is approved in several European and non-European countries for on-demand treatment and prophylaxis of bleeding in previously treated patients aged ≥ 12 years with hemophilia A. Reliable measurements can be obtained using most one-stage and chromogenic FVIII assays over a wide concentration range. The efficacy, safety and pharmacokinetics (PK) of damoctocog alfa pegol have been studied extensively in the PROTECT VIII clinical trials, and its long-term safety and effectiveness profile is continuing to build through observational and interventional real-world studies. The PK of damoctocog alfa pegol was shown to be improved as compared with that of sucrose-formulated rFVIII (rFVIII-FS, Kogenate^®), and was also demonstrated to be non-inferior to and, for some variables, more favorable than rFVIII-Fc fusion protein, efmoroctocog alfa (Elocta^®; NCT03364998), rurioctocog alfa pegol (BAX 855, Adynovate^®/Adynovi^®; NCT04015492), and antihemophilic factor (recombinant) plasma/albumin-free method (rAHF-PFM, Advate^®; NCT02483208). Damoctocog alfa pegol was generally well tolerated and none of the patients in any of the clinical trials, including the PROTECT VIII clinical program, HEM-POWR, or ongoing single-center studies, developed FVIII inhibitors. Efficacy for perioperative hemostasis has been demonstrated. Low bleeding rates were achieved across the studies, with twice weekly, every 5-day and every 7-day prophylaxis offering patients ≥ 12 years and their clinicians the chance to tailor treatment to individual needs and lifestyles, while maintaining long-term protection from bleeds and their consequences.</p>","PeriodicalId":49258,"journal":{"name":"Drugs in Research & Development","volume":" ","pages":"359-381"},"PeriodicalIF":2.2,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11456056/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142005686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Targeting Non-V600 Mutations in BRAF: A Single Institution Retrospective Analysis and Review of the Literature.","authors":"Hirra A Chaudhary, Timothy L Cannon, Arthur Winer","doi":"10.1007/s40268-024-00475-5","DOIUrl":"10.1007/s40268-024-00475-5","url":null,"abstract":"<p><strong>Background and objective: </strong>While successful treatment paradigms for BRAF V600 mutations have been developed, 10% of BRAF mutations are not at V600 and lack a standard treatment regimen. This study summarizes the current body of knowledge on the treatment of non-V600 mutations and reports a single institution experience.</p><p><strong>Methods: </strong>We conducted a literature review to summarize relevant preclinical and clinical published data on the response of non-V600 mutations to targeted therapies. We performed a retrospective analysis of INOVA Schar Cancer patients registered in our Molecular Tumor Board database with non-V600 BRAF mutations who were recipients of targeted therapy and assessed their time to next treatment and best response.</p><p><strong>Results: </strong>Published preclinical and clinical data have demonstrated limiting results in the response of non-V600 mutated cancers to targeted therapies. Response rates were variable for the major classes of BRAF mutations including class II and class III mutations as well as, BRAF fusions. Data collected from our INOVA cohort offered promising results with one patient achieving partial remission and two patients achieving stable disease.</p><p><strong>Conclusions: </strong>This article reflects the current understanding of targeted therapies in non-V600 mutations. Further large-scale studies separating BRAF mutations based on their mechanism of activation will  expand our understanding.</p>","PeriodicalId":49258,"journal":{"name":"Drugs in Research & Development","volume":" ","pages":"395-403"},"PeriodicalIF":2.2,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11455815/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142037514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pharmacokinetics and Bioequivalence of Two Formulations of Azithromycin Tablets: A Randomized, Single-Dose, Three-Period, Crossover Study in Healthy Chinese Volunteers Under Fasting and Fed Conditions.","authors":"Yingrong Chen, Libing Ye, Jue Mei, Mengli Tian, Min Xu, Qiuyue Jin, Xiang Yu, Shuixin Yang, Jie Wang","doi":"10.1007/s40268-024-00464-8","DOIUrl":"10.1007/s40268-024-00464-8","url":null,"abstract":"&lt;p&gt;&lt;strong&gt;Background and objective: &lt;/strong&gt;Azithromycin is the first azalide antibiotic that is related to the macrolide family of antibiotics. Bioequivalence studies in China are initiated by the National Medical Products Administration (NMPA), which supports a generic consistency evaluation program for ensuring that generic products manufactured in China meet the required standards and provide equivalent therapeutic effects to their reference products. This study aimed to assess the bioequivalence of two azithromycin tablets under both fasting and fed conditions in healthy Chinese volunteers.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Methods: &lt;/strong&gt;This was a single-center, open-label, single-dose, randomized, three-way crossover trial with two independent groups (fasting group and fed group). A total of 72 healthy Chinese subjects (36 subjects in the fasting state and 36 subjects in the fed state) were enrolled and randomized to treatment. Blood samples were collected from 0 to 120 h after a single oral dose of a 250-mg generic azithromycin tablet (test, T) or branded azithromycin tablet (reference, R). The plasma concentrations of azithromycin were determined by high-performance liquid chromatography-tandem mass spectrometry (HPLC‒MS/MS). A non-compartmental analysis method was used to estimate the pharmacokinetic parameters. Adverse events were documented.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Results: &lt;/strong&gt;In a fasting state, the bioequivalence of maximum plasma concentration (C&lt;sub&gt;max&lt;/sub&gt;) was evaluated using the reference-scaled average bioequivalence (RSABE) approach (within-subject standard deviation, S&lt;sub&gt;WR&lt;/sub&gt; &gt; 0.294), and the bioequivalence of area under the concentration-time curve from time 0 to the time of the last measurable plasma concentration (AUC&lt;sub&gt;0-t&lt;/sub&gt;) and area under the concentration-time curve from time 0 extrapolated to infinity (AUC&lt;sub&gt;0-∞&lt;/sub&gt;) were evaluated by the average bioequivalence (ABE) method (S&lt;sub&gt;WR&lt;/sub&gt; &lt;  0.294). The geometric mean ratio (GMR) of T/R for C&lt;sub&gt;max&lt;/sub&gt; was 106.49%, while the 95% upper confidence bound was &lt;  0. The GMRs of AUC&lt;sub&gt;0-t&lt;/sub&gt; and AUC&lt;sub&gt;0-∞&lt;/sub&gt; were 103.34% and 101.28%, and the 90% confidence intervals (CIs) of the test/reference were 95.90-111.35%/94.85-108.15%, respectively. In the fed state, the RSABE approach was applied to estimate the bioequivalence of C&lt;sub&gt;max&lt;/sub&gt; (S&lt;sub&gt;WR&lt;/sub&gt; &gt;0.294), and the ABE approach was applied to estimate the bioequivalence of AUC&lt;sub&gt;0-t&lt;/sub&gt; and AUC&lt;sub&gt;0-∞&lt;/sub&gt; (S&lt;sub&gt;WR&lt;/sub&gt; &lt;  0.294). The GMR for C&lt;sub&gt;max&lt;/sub&gt; was 99.80%, while the 95% upper confidence bound value was &lt;  0. The GMRs of AUC&lt;sub&gt;0-t&lt;/sub&gt; and AUC&lt;sub&gt;0-∞&lt;/sub&gt; were 97.07% and 98.15%, and the 90% CIs of the T/R were 90.02-104.68% and 90.66-106.25%, respectively. All adverse events were mild and transient.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Conclusions: &lt;/strong&gt;The trial indicated that the test and the reference azithromycin tablets were bioequivalent and well tolerated in healthy Chinese volunteers und","PeriodicalId":49258,"journal":{"name":"Drugs in Research & Development","volume":" ","pages":"201-209"},"PeriodicalIF":2.2,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11315817/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141176726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}