Cts-Clinical and Translational Science最新文献

{"title":"High-dose intranasal insulin in an adaptive dose-escalation study in healthy human participants.","authors":"Florian Schmitzberger, Jennifer Fowler, Cindy H Hsu, Manjunath P Pai, Robert W Neumar, William J Meurer, Robert Silbergleit","doi":"10.1111/cts.70071","DOIUrl":"10.1111/cts.70071","url":null,"abstract":"<p><p>Intranasal insulin is a putative neuroprotective therapy after cardiac arrest, but safety in humans at doses extrapolated from animal models is unknown. This phase I, open-label adaptive dose-escalation study explores the maximum tolerated dose of intranasal insulin in healthy human participants. Placebo or insulin at doses from 0 to 1000 units was given to healthy participants intranasally on repeated weekly visits. Serum glucose, insulin, and C-peptide levels were measured serially at 0, 15, 30, 60, 120, 180, and 240 min after administration. Twenty-four participants (12 female, median age 53, IQR 35-61) were enrolled. There was minimal change in average serum glucose after administration of intranasal insulin. Average serum insulin increased slightly in a dose-dependent manner, reaching maximum concentrations at 15 min. C-peptide decreased over time from administration in all groups. One participant had severe hypoglycemia (24 mg/dL at 45 min) and a different participant had mild hypoglycemia (51 mg/dL at 30 min), both after receiving 600 U intranasal insulin. Hypoglycemic episodes were associated with increases in serum insulin. Both participants continued in the study without hypoglycemia after additional doses. High-dose intranasal insulin up to 1000 U was generally well tolerated, with minimal measurable systemic absorption and without significant aggregate changes in mean glucose. Idiosyncratic episodic systemic absorption and hypoglycemia require further study and additional caution in potential clinical application. Further study of its target engagement and efficacy as a neuroprotective therapy after cardiac arrest at these doses is warranted.</p>","PeriodicalId":50610,"journal":{"name":"Cts-Clinical and Translational Science","volume":"17 11","pages":"e70071"},"PeriodicalIF":3.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142669753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integrating real-world data and machine learning: A framework to assess covariate importance in real-world use of alternative intravenous dosing regimens for atezolizumab.","authors":"Bianca Vora, Ashutosh Jindal, Erick Velasquez, James Lu, Benjamin Wu","doi":"10.1111/cts.70077","DOIUrl":"10.1111/cts.70077","url":null,"abstract":"<p><p>The increase in the availability of real-world data (RWD), in combination with advances in machine learning (ML) methods, provides a unique opportunity for the integration of the two to explore complex clinical pharmacology questions. Here we present a recently developed RWD/ML framework that utilizes ML algorithms to understand the influence and importance of various covariates on the use of a given dose and schedule for drugs that have multiple approved dosing regimens. To demonstrate the application of this framework, we present atezolizumab as a use case on account of its three approved alternative intravenous (IV) dosing regimens. As expected, the real-world use of atezolizumab has generally been increasing since 2016 for the 1200 mg every 3 weeks regimen and since 2019 for the 1680 mg every 4 weeks regimen. Out of the ML algorithms evaluated, XGBoost performed the best, as measured by the area under the precision-recall curve, with an emphasis on the under-sampled class given the imbalance in the data. The importance of features was measured by Shapley Additive exPlanations (SHAP) values and showed metastatic breast cancer and use of protein-bound paclitaxel as the most correlated with the use of 840 mg every 2 weeks. Although patient usage data for alternative IV dosing regimens are still maturing, these analyses provide initial insights on the use of atezolizumab and set up a framework for the re-analysis of atezolizumab (at a future data cut) as well as application to other molecules with approved alternative dosing regimens.</p>","PeriodicalId":50610,"journal":{"name":"Cts-Clinical and Translational Science","volume":"17 11","pages":"e70077"},"PeriodicalIF":3.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142669774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Use cases of registry-based randomized controlled trials-A review of the registries' contributions and constraints.","authors":"Nadine Kubesch, Sneha Gaitonde, Uarda Petriti, Elisabeth Bakker, Swati Basu, Laura Ellen Birks, Elodie Aubrun, Sieta T de Vries, Rahel Schneider","doi":"10.1111/cts.70072","DOIUrl":"10.1111/cts.70072","url":null,"abstract":"<p><p>Registry-based randomized controlled trials (RRCTs) can combine the advantages of registries with those of randomization. This review aimed to expand the current knowledge on RRCT utilization and implementation by providing a comprehensive overview of RRCT use cases. A targeted literature search was conducted through July 2023 to identify articles on RRCTs. Information regarding the RRCT characteristics, their utilization, and the registries' contributions and the constraints faced was extracted. Descriptive statistics were used. We identified 102 RRCTs in 110 publications. RRCTs were mostly performed for the assessment of medical devices or surgical/clinical procedures (n = 45), followed by drugs (n = 30). More than half of the RRCTs were conducted in the Nordic countries (n = 58) and the most used registry types were health service registries/administrative health data (n = 63), followed by disease registries (n = 46). Approximately half of the RRCTs (n = 53) utilized additional data sources aside from registry data. The contribution of a registry to the RRCT was mostly for data collection and study follow-up (n = 90-92), followed by patient recruitment (n = 56-61), and randomization (n = 28-38), with varying levels of transparency in reporting. We collated author-reported constraints related to the used registries into four overarching themes, that is, data availability and completeness, data quality, representativeness, and registry infrastructure and accessibility. This review shows that RRCTs are already used in different domains and geographic regions. Guidelines on structured and transparent reporting of RRCT methods and the optimal use are, however, needed to inform decision-making by health authorities and to reach their full potential.</p>","PeriodicalId":50610,"journal":{"name":"Cts-Clinical and Translational Science","volume":"17 11","pages":"e70072"},"PeriodicalIF":3.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142669778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Imetelstat, a novel, first-in-class telomerase inhibitor: Mechanism of action, clinical, and translational science.","authors":"Ashley L Lennox, Fei Huang, Melissa Kelly Behrs, Mario González-Sales, Neha Bhise, Ying Wan, Libo Sun, Tymara Berry, Faye Feller, Peter N Morcos","doi":"10.1111/cts.70076","DOIUrl":"10.1111/cts.70076","url":null,"abstract":"<p><p>Most cancers and neoplastic progenitor cells have elevated telomerase activity and preservation of telomeres that promote cellular immortality, making telomerase a rational target for the treatment of cancer. Imetelstat is a first-in-class, 13-mer oligonucleotide that binds with high affinity to the template region of the RNA component of human telomerase and acts as a competitive inhibitor of human telomerase enzymatic activity. Pharmacokinetics, pharmacodynamics, exposure-response analyses, efficacy, and safety of imetelstat have been evaluated in vitro, in vivo, and clinically in solid tumor and hematologic malignancies, including lower-risk myelodysplastic syndromes (LR-MDS) and myeloproliferative neoplasms. Imetelstat was approved in the United States in June 2024 for the treatment of adult patients with LR-MDS with transfusion-dependent anemia requiring four or more red blood cell units over 8 weeks who have not responded to or have lost response to or are ineligible for erythropoiesis-stimulating agents, with a recommended dosing regimen of 7.1 mg/kg administered via 2-h intravenous infusion every 4 weeks. In the pivotal trial, significantly more patients treated with imetelstat versus placebo achieved ≥8-week and ≥24-week red blood cell-transfusion independence, and imetelstat was associated with a manageable safety profile characterized primarily by short-lived and manageable neutropenia and thrombocytopenia. This mini-review summarizes the mechanism of action, pharmacokinetic and pharmacodynamic characteristics, clinical development, and clinical efficacy and safety data of imetelstat.</p>","PeriodicalId":50610,"journal":{"name":"Cts-Clinical and Translational Science","volume":"17 11","pages":"e70076"},"PeriodicalIF":3.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/cts.70076","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142649474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Serum creatine kinase elevation following tyrosine kinase inhibitor treatment in cancer patients: Symptoms, mechanism, and clinical management","authors":"Hang Zhang,&nbsp;Kenneth K. W. To","doi":"10.1111/cts.70053","DOIUrl":"10.1111/cts.70053","url":null,"abstract":"<p>Molecular targeted tyrosine kinase inhibitors (TKIs) have produced unprecedented treatment response in cancer therapy for patients harboring specific oncogenic mutations. While the TKIs are mostly well tolerated, they were reported to increase serum levels of creatine kinase (CK) and cause muscle metabolism-related toxicity. CK is an essential enzyme involved in cellular energy metabolism and muscle function. Elevated serum CK levels can arise from both physiological and pathological factors, as well as triggered by specific drug classes. The incidence of serum CK elevation induced by a few approved TKIs (brigatinib, binimetinib, cobimetinib-vemurafenib combination [Food and Drug Administration, United States]; aumolertinib, and sunvozertinib [only approved by National Medical Products Administration, China]) were over 35%. CK elevation-related symptoms include myopathy, myositis, inclusion body myositis (IBM), cardiotoxicity, rhabdomyolysis, rash, and acneiform dermatitis. High-level or severe symptomatic CK elevation may necessitate dose reduction and indirectly dampen TKI efficacy. This review presents an updated summary about the prevalence rate and recent research about mechanisms leading to TKI-induced serum CK elevation in cancer patients. The utility of monitoring serum CK levels for predicting TKI-induced adverse effects and their management will also be discussed.</p>","PeriodicalId":50610,"journal":{"name":"Cts-Clinical and Translational Science","volume":"17 11","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/cts.70053","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142548691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Practical guide to SHAP analysis: Explaining supervised machine learning model predictions in drug development","authors":"Ana Victoria Ponce-Bobadilla,&nbsp;Vanessa Schmitt,&nbsp;Corinna S. Maier,&nbsp;Sven Mensing,&nbsp;Sven Stodtmann","doi":"10.1111/cts.70056","DOIUrl":"10.1111/cts.70056","url":null,"abstract":"<p>Despite increasing interest in using Artificial Intelligence (AI) and Machine Learning (ML) models for drug development, effectively interpreting their predictions remains a challenge, which limits their impact on clinical decisions. We address this issue by providing a practical guide to SHapley Additive exPlanations (SHAP), a popular feature-based interpretability method, which can be seamlessly integrated into supervised ML models to gain a deeper understanding of their predictions, thereby enhancing their transparency and trustworthiness. This tutorial focuses on the application of SHAP analysis to standard ML black-box models for regression and classification problems. We provide an overview of various visualization plots and their interpretation, available software for implementing SHAP, and highlight best practices, as well as special considerations, when dealing with binary endpoints and time-series models. To enhance the reader's understanding for the method, we also apply it to inherently explainable regression models. Finally, we discuss the limitations and ongoing advancements aimed at tackling the current drawbacks of the method.</p>","PeriodicalId":50610,"journal":{"name":"Cts-Clinical and Translational Science","volume":"17 11","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/cts.70056","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142512334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thai pharmacogenomics database −2 (TPGxD-2) sequel to TPGxD-1, analyzing genetic variants in 26 non-VIPGx genes within the Thai population","authors":"Shobana John,&nbsp;Sommon Klumsathian,&nbsp;Paravee Own-eium,&nbsp;Angkana Charoenyingwattana,&nbsp;Jakris Eu-ahsunthornwattana,&nbsp;Thanyachai Sura,&nbsp;Donniphat Dejsuphong,&nbsp;Piyamitr Sritara,&nbsp;Prin Vathesatogkit,&nbsp;Nartthawee Thongchompoo,&nbsp;Wiphaporn Thabthimthong,&nbsp;Nuttinee Teerakulkittipong,&nbsp;Wasun Chantratita,&nbsp;Chonlaphat Sukasem","doi":"10.1111/cts.70019","DOIUrl":"10.1111/cts.70019","url":null,"abstract":"<p>Next-generation sequencing (NGS) has transformed pharmacogenomics (PGx), enabling thorough profiling of pharmacogenes using computational methods and advancing personalized medicine. The Thai Pharmacogenomic Database-2 (TPGxD-2) analyzed 948 whole genome sequences, primarily from the Electricity Generating Authority of Thailand (EGAT) cohort. This study is an extension of the previous Thai Pharmacogenomic Database (TPGxD-1) and specifically focused on 26 non-very important pharmacogenes (VIPGx) genes. Variant calling was conducted using Sentieon (version 201808.08) following GATK's best workflow practices. We then annotated variant call format (VCF) files using Golden Helix VarSeq 2.5.0. Star allele analysis was performed with Stargazer v2.0.2, which called star alleles for 22 of 26 non-VIPGx genes. The variant analysis revealed a total of 14,529 variants in 26 non-VIPGx genes, with <i>TBXAS1</i> had the highest number of variants (27%). Among the 14,529 variants, 2328 were novel (without rsID), with 87 identified as clinically relevant. We also found 56 known PGx variants among the known variants (<i>n</i> = 12,201), with <i>UGT2B7</i> (19.64%), <i>CYP1B1</i> (8.9%), <i>SLCO2B1</i> (8.9%), and <i>POR</i> (8.9%) being the most common. We reported a high frequency of intermediate metabolizers (IMs) in <i>CYP2F1</i> (34.6%) and <i>CYP4A11</i> (8.6%), and a high frequency of decreased functional alleles in <i>POR</i> (53.9%) and <i>SLCO1B3</i> (34.9%) genes. This study enhances our understanding of pharmacogenomic profiling of 26 non-VIPGx genes of notable clinical importance in the Thai population. However, further validation with additional computational and reference genotyping methods is necessary, and novel alleles identified in this study should undergo further orthogonal validation.</p>","PeriodicalId":50610,"journal":{"name":"Cts-Clinical and Translational Science","volume":"17 10","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11502937/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142512333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Absolute oral bioavailability of milvexian spray-dried dispersion formulation under fasted and fed conditions in healthy adult participants: An intravenous microtracer approach","authors":"Praneeth Jarugula,&nbsp;Sharif Soleman,&nbsp;Hyunmoon Back,&nbsp;Lisa J. Christopher,&nbsp;Dara Hawthorne,&nbsp;Ronald Aronson,&nbsp;Anh Bui,&nbsp;Angela Mirzac,&nbsp;Antoinette Ajavon-Hartmann,&nbsp;Vidya Perera,&nbsp;Bindu Murthy,&nbsp;Samira Merali","doi":"10.1111/cts.70058","DOIUrl":"10.1111/cts.70058","url":null,"abstract":"<p>Milvexian is an oral, small-molecule factor XIa inhibitor being developed to prevent thromboembolic events. This study assessed the absolute bioavailability (F) of milvexian following single doses of milvexian spray-dried dispersion (SDD) formulation under fed and fasted conditions, and milvexian solution, in healthy adult participants using an intravenous microtracer approach. This was a phase I, open-label, partially randomized, 4-sequence, 5-period crossover study. After fasting for ≥10 h, participants received milvexian 200-mg oral solution with a 100-μg ¹⁴C milvexian intravenous microtracer at the time of maximum observed plasma concentration. Following a 3-day washout, participants were randomized to 1 of 4 milvexian SDD treatment sequences in a crossover fashion: 25 mg fasted, 25 mg fed, 200 mg fasted, or 200 mg fed. Pharmacokinetic data were collected up to 72 h postdose. Seventeen participants were dosed, and 14 completed treatment. Under fasted conditions, milvexian F was ~100%, 58.2%, and 54.2% following administration of the oral solution, 25 mg SDD, and 200 mg SDD, respectively. Under fed conditions, milvexian F following 25 mg and 200 mg SDD was 44.3% and 75.6%, respectively. The milvexian SDD formulation at 25 mg and 200 mg resulted in similar F in a fasted state; under fed conditions, milvexian F decreased at 25 mg and increased at 200 mg. These findings clarify pharmacokinetic-related gaps observed in previous studies.</p>","PeriodicalId":50610,"journal":{"name":"Cts-Clinical and Translational Science","volume":"17 10","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11503494/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142512330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Asia-inclusive drug development leveraging principles of ICH E5 and E17 guidelines: Case studies illustrating quantitative clinical pharmacology as a foundational enabler","authors":"Hong Lu,&nbsp;Lena Klopp-Schulze,&nbsp;Jatinder Kaur Mukker,&nbsp;Dandan Li,&nbsp;Yoshihiro Kuroki,&nbsp;Jayaprakasam Bolleddula,&nbsp;Nadia Terranova,&nbsp;Kosalaram Goteti,&nbsp;Wei Gao,&nbsp;Rainer Strotmann,&nbsp;Jennifer Dong,&nbsp;Karthik Venkatakrishnan","doi":"10.1111/cts.70050","DOIUrl":"10.1111/cts.70050","url":null,"abstract":"<p>With the International Conference on Harmonization of Technical Requirements for Pharmaceuticals for Human Use (ICH) E17 guidelines in effect from 2018, the design of Asia-inclusive multiregional clinical trials (MRCTs) has been streamlined, thereby enabling efficient simultaneous global development. Furthermore, with the recent regulatory reforms in China and its drug administration joining the ICH as a full regulatory member, early participation of China in the global clinical development of novel investigational drugs is now feasible. This would also allow for inclusion of the region in the geographic footprint of pivotal MRCTs leveraging principles of the ICH E5 and E17. Herein, we describe recent case examples of model-informed Asia-inclusive global clinical development in the EMD Serono portfolio, as applied to the ataxia telangiectasia and Rad3-related inhibitors, tuvusertib and berzosertib (oncology), the toll-like receptor 7/8 antagonist, enpatoran (autoimmune diseases), the mesenchymal–epithelial transition factor inhibitor tepotinib (oncology), and the antimetabolite cladribine (neuroimmunological disease). Through these case studies, we illustrate pragmatic approaches to ethnic sensitivity assessments and the application of a model-informed drug development toolkit including population pharmacokinetic/pharmacodynamic modeling and pharmacometric disease progression modeling and simulation to enable early conduct of Asia-inclusive MRCTs. These examples demonstrate the value of a <i>Totality of Evidence</i> approach where every patient's data matter for de-risking ethnic sensitivity to inter-population variations in drug- and disease-related intrinsic and extrinsic factors, enabling inclusive global development strategies and timely evidence generation for characterizing benefit/risk of the proposed dosage in Asian populations.</p>","PeriodicalId":50610,"journal":{"name":"Cts-Clinical and Translational Science","volume":"17 10","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11500040/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142512331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mevalonate in blood and muscle: Response to atorvastatin treatment and the relationship to statin intolerance in patients with coronary heart disease","authors":"Trine Lauritzen,&nbsp;John Munkhaugen,&nbsp;Stein Bergan,&nbsp;Elise Sverre,&nbsp;Kari Peersen,&nbsp;Sofia Lindahl,&nbsp;Einar Husebye,&nbsp;Nils Tore Vethe","doi":"10.1111/cts.70025","DOIUrl":"10.1111/cts.70025","url":null,"abstract":"<p>Statin-associated muscle symptoms are frequently reported and often lead to discontinuation of statin therapy with an increased risk of cardiovascular events. In vitro studies suggest that statin-mediated inhibition of the mevalonate pathway leads to muscle cell toxicity. We aimed to determine the relationship between mevalonate, LDL-cholesterol, and atorvastatin metabolites in patients with coronary heart disease and self-perceived muscle side effects. Furthermore, we assessed the correlation between mevalonate in blood and muscle and the relationship to statin intolerance due to muscle symptoms. We used blood plasma from a randomized crossover trial (<i>n</i> = 70) and muscle biopsies and plasma from a subgroup in a subsequent open intervention study (<i>n</i> = 26). Both studies tested atorvastatin 40 mg/day. Seven patients did not tolerate ≥3 statins throughout the follow-up and were classified as statin-intolerant. Mevalonate in blood plasma decreased during atorvastatin treatment (median difference −38%, range −77% to 43%, <i>p</i> &lt; 0.001), whereas mevalonate in muscle tissue was not lowered (0.05%, range −47% to 145%). Mevalonate correlated poorly with LDL-cholesterol and atorvastatin metabolites (Spearman's rho −0.28 to 0.10). The statin-intolerant patients had a smaller reduction in circulating mevalonate compared with the tolerant patients; median difference −8.1 (−22 to 3.5) nmol/L versus −25 (−93 to 12) nmol/L, <i>p</i> = 0.028. A similar observation was made for LDL-cholesterol. Cutoffs based on these biomarkers classified &gt;50% correctly as tolerant. Inhibition of the mevalonate pathway does not appear to be the mechanism underlying statin intolerance in the present study. Further studies of mevalonate as a biomarker for statin tolerance are needed to clarify the potential.</p>","PeriodicalId":50610,"journal":{"name":"Cts-Clinical and Translational Science","volume":"17 10","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11499300/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142512332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}