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1.
Bioanalysis ; 11(7): 659-660, 2019 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-30997817

RESUMEN

Biography Chad received his Bachelor of Science degree in Chemistry from Alma College in Michigan and a Master's degree in Analytical Chemistry from the University of Michigan with a focus in the use of LC-MS/MS in protein and peptide analysis. Chad's Doctorate of Philosophy at the University of Nebraska was focused on studies of protein binding via affinity LC-MS/MS and computer simulations. Chad's career of nearly 25 years includes positions of increasing responsibility ranging from bench scientist to his current role as global head of scientific affairs for Bioanalytical Science at PRA. He is a frequently invited speaker at global scientific meetings in the field of Bioanalytical Laboratory Science including WRIB, AAPS, CPSA and Land O'Lakes Bioanalysis. He is on the organizational committee and has chaired several meetings as well including the Land O'Lakes Bioanalytical Meeting and the CPSA Meeting and the upcoming AAPS meeting on cellular and gene therapy. He is also a Bioanalysis Zone leader.


Asunto(s)
Selección de Profesión , Química Analítica , Identidad de Género , Movilidad Laboral , Humanos , Industrias , Investigadores/psicología
2.
Bioanalysis ; 11(23): 2099-2132, 2019 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-31833782

RESUMEN

The 2019 13th Workshop on Recent Issues in Bioanalysis (WRIB) took place in New Orleans, LA on 1-5 April 2019 with an attendance of over 1000 representatives from pharmaceutical/biopharmaceutical companies, biotechnology companies, contract research organizations and regulatory agencies worldwide. WRIB was once again a 5-day, week-long event - a full immersion week of bioanalysis, biomarkers, immunogenicity and gene therapy. As usual, it was specifically designed to facilitate sharing, reviewing, discussing and agreeing on approaches to address the most current issues of interest including both small- and large-molecule bioanalysis involving LCMS, hybrid LBA/LCMS, LBA cell-based/flow cytometry assays and qPCR approaches. This 2019 White Paper encompasses recommendations emerging from the extensive discussions held during the workshop, and is aimed to provide the bioanalytical community with key information and practical solutions on topics and issues addressed, in an effort to enable advances in scientific excellence, improved quality and better regulatory compliance. Due to its length, the 2019 edition of this comprehensive White Paper has been divided into three parts for editorial reasons. This publication (Part 2) covers the recommendations on the 2018 FDA BMV guidance, 2019 ICH M10 BMV draft guideline and regulatory agencies' input on bioanalysis, biomarkers, immunogenicity and gene therapy. Part 1 (Innovation in small molecules and oligonucleotides and mass spectrometry method development strategies for large molecules bioanalysis) and Part 3 (New insights in biomarker assay validation, current and effective strategies for critical reagent management, flow cytometry validation in drug discovery and development and CLSI H62, interpretation of the 2019 FDA immunogenicity guidance and gene therapy bioanalytical challenges) are published in volume 10 of Bioanalysis, issues 22 and 24 (2019), respectively.


Asunto(s)
Bioensayo/normas , Biomarcadores/análisis , Guías como Asunto , Fenómenos Inmunogenéticos , Informe de Investigación , United States Food and Drug Administration/legislación & jurisprudencia , Humanos , Estados Unidos
3.
Bioanalysis ; 11(18s): 1-228, 2019 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-31565956

RESUMEN

The 13th GCC Closed Forum for Bioanalysis was held in New Orleans, Louisiana, USA on April 5th, 2019. This GCC meeting was organized to discuss the contents of the 2019 ICH M10 Bioanalytical Method Validation Draft Guideline published in February 2019 and consolidate the feedback of the GCC members. In attendance were 63 senior-level participants from eight countries representing 44 bioanalytical CRO companies/sites. This event represented a unique opportunity for CRO bioanalytical experts to share their opinions and concerns regarding the ICH M10 Bioanalytical Method Validation Draft Guideline and to build unified comments to be provided to the ICH.


Asunto(s)
Biomarcadores/análisis , Guías como Asunto , Humanos , Reproducibilidad de los Resultados , Proyectos de Investigación
4.
Bioanalysis ; 11(12): 1129-1138, 2019 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-31319683

RESUMEN

The 12th GCC Closed Forum was held in Philadelphia, PA, USA, on 9 April 2018. Representatives from international bioanalytical Contract Research Organizations were in attendance in order to discuss scientific and regulatory issues specific to bioanalysis. The issues discussed at the meeting included: critical reagents; oligonucleotides; certificates of analysis; method transfer; high resolution mass spectrometry; flow cytometry; recent regulatory findings and case studies involving stability and nonclinical immunogenicity. Conclusions and consensus from discussions of these topics are included in this article.


Asunto(s)
Certificación , Técnicas de Química Analítica , Citometría de Flujo , Espectrometría de Masas , Oligonucleótidos/análisis , Control Social Formal , Sociedades Científicas , Indicadores y Reactivos/química
5.
Bioanalysis ; 10(7): 433-444, 2018 Apr 01.
Artículo en Inglés | MEDLINE | ID: mdl-29701066

RESUMEN

The 11th Global CRO Council Closed Forum was held in Universal City, CA, USA on 3 April 2017. Representatives from international CRO members offering bioanalytical services were in attendance in order to discuss scientific and regulatory issues specific to bioanalysis. The second CRO-Pharma Scientific Interchange Meeting was held on 7 April 2017, which included Pharma representatives' sharing perspectives on the topics discussed earlier in the week with the CRO members. The issues discussed at the meetings included cumulative stability evaluations, matrix stability evaluations, the 2016 US FDA Immunogenicity Guidance and recent and unexpected FDA Form 483s on immunogenicity assays, the bioanalytical laboratory's role in writing PK sample collection instructions, biosimilars, CRO perspectives on the use of chiral versus achiral methods, hybrid LBA/LCMS assays, applications of fit-for-purpose validation and, at the Global CRO Council Closed Forum only, the status and trend of current regulated bioanalytical practice in China under CFDA's new BMV policy. Conclusions from discussions of these topics at both meetings are included in this report.


Asunto(s)
Bioensayo/métodos , Biomarcadores/análisis , Biosimilares Farmacéuticos/uso terapéutico , China , Humanos , Proyectos de Investigación
6.
J Pharm Biomed Anal ; 44(2): 484-91, 2007 Jun 28.
Artículo en Inglés | MEDLINE | ID: mdl-17433601

RESUMEN

System suitability is widely recognized as a critical component of bioanalysis. This paper discusses a generic system suitability test that monitors instrument performance throughout a run when used for liquid chromatography tandem mass spectrometry (LC/MS/MS) in bioanalysis. This system suitability process is designed to ensure that the LC/MS/MS system is performing in a manner that leads to the production of accurate and reproducible data that can be submitted with confidence to regulatory agencies. This process contains tests for signal stability, carryover, and instrument response. This approach is integrated throughout an analytical run and has been used in the analysis of over 25,000 batches of clinical samples. Two case studies are presented in which quality control samples and standards meet all acceptance criteria (based on Standard Operating Procedures and the Food and Drug Administration's recommendations for bioanalytical method validation) but failed the proposed system suitability test, and thus were rejected. In these case studies, the concentrations of a significant number of clinical samples (over 35%) were affected, resulting in changes of more than 15% when the samples were reanalyzed. These data indicate that the poor performance of an LC/MS/MS system could adversely affect the calculated concentrations of unknown samples even though the results for quality control samples appear to be acceptable.


Asunto(s)
Cromatografía Liquida/métodos , Espectrometría de Masas/métodos , Cromatografía Líquida de Alta Presión , Cromatografía Liquida/estadística & datos numéricos , Interpretación Estadística de Datos , Espectrometría de Masas/estadística & datos numéricos , Control de Calidad , Espectrofotometría Ultravioleta
7.
Bioanalysis ; 9(22): 1807-1825, 2017 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-29148835

RESUMEN

The 2017 11th Workshop on Recent Issues in Bioanalysis (11th WRIB) took place in Los Angeles/Universal City, California from 3 April 2017 to 7 April 2017 with participation of close to 750 professionals from pharmaceutical/biopharmaceutical companies, biotechnology companies, contract research organizations and regulatory agencies worldwide. WRIB was once again a 5-day, weeklong event - A Full Immersion Week of Bioanalysis, Biomarkers and Immunogenicity. As usual, it was specifically designed to facilitate sharing, reviewing, discussing and agreeing on approaches to address the most current issues of interest including both small and large molecule analysis involving LCMS, hybrid LBA/LCMS and ligand-binding assay (LBA) approaches. This 2017 White Paper encompasses recommendations emerging from the extensive discussions held during the workshop, and is aimed to provide the bioanalytical community with key information and practical solutions on topics and issues addressed, in an effort to enable advances in scientific excellence, improved quality and better regulatory compliance. Due to its length, the 2017 edition of this comprehensive White Paper has been divided into three parts for editorial reasons. This publication (Part 1) covers the recommendations for Small Molecules, Peptides and Small Molecule Biomarkers using LCMS. Part 2 (Biotherapeutics, Biomarkers and Immunogenicity Assays using Hybrid LBA/LCMS and Regulatory Agencies' Inputs) and Part 3 (LBA: Immunogenicity, Biomarkers and PK Assays) are published in volume 9 of Bioanalysis, issues 23 and 24 (2017), respectively.


Asunto(s)
Biomarcadores/análisis , Cromatografía Líquida de Alta Presión , Espectrometría de Masas , Péptidos/análisis , Bibliotecas de Moléculas Pequeñas/análisis , Conferencias de Consenso como Asunto , Guías como Asunto , Ligandos , Bibliotecas de Moléculas Pequeñas/química
9.
Bioanalysis ; 8(6): 487-95, 2016 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-26916197

RESUMEN

The 9th GCCClosed Forum was held just prior to the 2015 Workshop on Recent Issues in Bioanalysis (WRIB) in Miami, FL, USA on 13 April 2015. In attendance were 58 senior-level participants, from eight countries, representing 38 CRO companies offering bioanalytical services. The objective of this meeting was for CRO bioanalytical representatives to meet and discuss scientific and regulatory issues specific to bioanalysis. The issues selected at this year's closed forum include CAPA, biosimilars, preclinical method validation, endogenous biomarkers, whole blood stability, and ELNs. A summary of the industry's best practices and the conclusions from the discussion of these topics is included in this meeting report.


Asunto(s)
Biomarcadores/análisis , Biosimilares Farmacéuticos/análisis , Evaluación Preclínica de Medicamentos/métodos , Biomarcadores/sangre , Registros Electrónicos de Salud , Laboratorios , Sociedades Médicas , Estudios de Validación como Asunto
10.
Bioanalysis ; 8(22): 2363-2378, 2016 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-27712081

RESUMEN

The 2016 10th Workshop on Recent Issues in Bioanalysis (10th WRIB) took place in Orlando, Florida with participation of close to 700 professionals from pharmaceutical/biopharmaceutical companies, biotechnology companies, contract research organizations, and regulatory agencies worldwide. WRIB was once again a 5-day, weeklong event - A Full Immersion Week of Bioanalysis including Biomarkers and Immunogenicity. As usual, it was specifically designed to facilitate sharing, reviewing, discussing and agreeing on approaches to address the most current issues of interest including both small and large molecule analysis involving LCMS, hybrid LBA/LCMS, and LBA approaches, with the focus on biomarkers and immunogenicity. This 2016 White Paper encompasses recommendations emerging from the extensive discussions held during the workshop, and is aimed to provide the bioanalytical community with key information and practical solutions on topics and issues addressed, in an effort to enable advances in scientific excellence, improved quality and better regulatory compliance. This white paper is published in 3 parts due to length. This part (Part 1) discusses the recommendations for small molecules, peptides and small molecule biomarkers by LCMS. Part 2 (Hybrid LBA/LCMS and regulatory inputs from major global health authorities) and Part 3 (large molecule bioanalysis using LBA, biomarkers and immunogenicity) will be published in the Bioanalysis journal, issue 23.

12.
Bioanalysis ; 11(20): 1813-1814, 2019 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-31789074
14.
Bioanalysis ; 6(22): 2957-63, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-25496252

RESUMEN

The 8th GCC Closed Forum for Bioanalysis was held in Baltimore, MD, USA on 5 December 2013, immediately following the 2013 AAPS Workshop (Crystal City V): Quantitative Bioanalytical Methods Validation and Implementation--The 2013 Revised FDA Guidance. This GCC meeting was organized to discuss the contents of the draft revised FDA Guidance on bioanalytical method validation that was published in September 2013 and consolidate the feedback of the GCC members. In attendance were 63 senior-level participants, from seven countries, representing 46 bioanalytical CRO companies/sites. This event represented a unique opportunity for CRO bioanalytical experts to share their opinions and concerns regarding the draft FDA Guidance, and to build unified comments to be provided to the FDA.


Asunto(s)
Técnicas de Química Analítica/normas , Guías como Asunto , Estudios de Validación como Asunto , Biomarcadores/análisis , Calibración , Ligandos , Límite de Detección , Juego de Reactivos para Diagnóstico , Reproducibilidad de los Resultados , Estados Unidos , United States Food and Drug Administration
15.
Bioanalysis ; 5(14): 1715-22, 2013 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-23862703

RESUMEN

Bioanalysis invited a selection of leading researchers to express their views on increasing and maintaining productivity in the bioanalytical laboratory. The topics discussed include the challenges of maintaining productivity when integrating new innovations into existing processes, the impact of automation on productivity, and how they effectively manage productivity in their own bioanalytical laboratories. Their enlightening responses provide a valuable insight into current methods of increasing productivity and the future of the constantly evolving bioanalytical laboratory.


Asunto(s)
Técnicas de Química Analítica , Eficiencia Organizacional , Eficiencia , Diseño de Fármacos , Laboratorios/organización & administración
16.
Bioanalysis ; 5(21): 2601-5, 2013 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-24180501

RESUMEN

The University of Wisconsin bioanalytical conference is presented each year by the Extension Services in Pharmacy, the professional development department within the School of Pharmacy. The purpose of this 3-day conference was to provide an educational forum to discuss issues and applications associated with the analysis of xenobiotics, metabolites, biologics and biomarkers in biological matrices. The conference was designed to include and encourage an open exchange of scientific and methodological applications for bioanalysis. To increase the interactive nature of the conference the program was composed of a mixture of lectures, interactive discussions, poster sessions and roundtables. This paper summarizes the presentations at the Fourteenth Annual Conference, offered in a new venue.


Asunto(s)
Productos Biológicos/análisis , Xenobióticos/análisis , Biomarcadores/análisis , Química Analítica , Humanos
18.
Bioanalysis ; 3(21): 2381-4, 2011 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-22074278

RESUMEN

The Applied Pharmaceutical Software Meeting is held annually. It is sponsored by The Boston Society, a not-for-profit organization that coordinates a series of meetings within the global pharmaceutical industry. The meeting generally focuses on laboratory applications, but in recent years has expanded to include some software applications for clinical trials. The 2011 meeting emphasized the global laboratory environment. Global clinical trials generate massive amounts of data in many locations that must be centralized and processed for efficient analysis. Thus, the meeting had a strong focus on establishing networks and systems for dealing with the computer infrastructure to support such environments. In addition to the globally installed laboratory information management system, electronic laboratory notebook and other traditional laboratory applications, cloud computing is quickly becoming the answer to provide efficient, inexpensive options for managing the large volumes of data and computing power, and thus it served as a central theme for the meeting.


Asunto(s)
Ensayos Clínicos como Asunto , Sistemas de Administración de Bases de Datos , Industria Farmacéutica/normas , Laboratorios , Investigación Biomédica , Ensayos Clínicos como Asunto/normas , Sistemas de Administración de Bases de Datos/organización & administración , Sistemas de Administración de Bases de Datos/normas , Sistemas de Administración de Bases de Datos/tendencias , Industria Farmacéutica/métodos , Industria Farmacéutica/tendencias , Difusión de la Información , Internacionalidad , Laboratorios/normas , Estados Unidos
19.
Bioanalysis ; 3(19): 2171-5, 2011 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-21985412

RESUMEN

This University of Wisconsin School of Pharmacy bioanalytical conference is presented each year by the Extension Services in Pharmacy, the professional development department within the school. The purpose of this 4-day conference is to provide an educational forum to discuss issues and applications associated with the analysis of xenobiotics, metabolites, biologics and biomarkers in biological matrices. The conference is designed to include and encourage an open exchange of scientific and methodological applications for bioanalysis. To increase the interactive nature of the conference, the program was a mixture of lectures, poster sessions, round table discussions and workshops. This article summarizes the presentations at the 12th Annual Conference.


Asunto(s)
Biomarcadores/análisis , Técnicas de Química Analítica , Química Analítica/tendencias , Humanos , Xenobióticos/análisis
20.
J Chromatogr A ; 1217(17): 2796-803, 2010 Apr 23.
Artículo en Inglés | MEDLINE | ID: mdl-20227701

RESUMEN

Human serum albumin (HSA) was explored for use as a stationary phase and ligand in affinity microcolumns for the ultrafast extraction of free drug fractions and the use of this information for the analysis of drug-protein binding. Warfarin, imipramine, and ibuprofen were used as model analytes in this study. It was found that greater than 95% extraction of all these drugs could be achieved in as little as 250 ms on HSA microcolumns. The retained drug fraction was then eluted from the same column under isocratic conditions, giving elution in less than 40 s when working at 4.5 mL/min. The chromatographic behavior of this system gave a good fit with that predicted by computer simulations based on a reversible, saturable model for the binding of an injected drug with immobilized HSA. The free fractions measured by this method were found to be comparable to those determined by ultrafiltration, and equilibrium constants estimated by this approach gave good agreement with literature values. Advantages of this method include its speed and the relatively low cost of microcolumns that contain HSA. The ability of HSA to bind many types of drugs also creates the possibility of using the same affinity microcolumn to study and measure the free fractions for a variety of pharmaceutical agents. These properties make this technique appealing for use in drug-binding studies and in the high-throughput screening of new drug candidates.


Asunto(s)
Cromatografía de Afinidad/métodos , Ibuprofeno/química , Imipramina/química , Proteínas Inmovilizadas/química , Albúmina Sérica/química , Warfarina/química , Humanos , Cinética , Unión Proteica
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