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The AAPS Journal

, 21:104 | Cite as

Fit-for-Purpose Quality Control System in Continuous Bioanalysis During Long-Term Pediatric Studies

  • Mohsin Ali
  • Jutta Tins
  • Bjoern B. BurckhardtEmail author
  • on behalf of LENA Consortium
Research Article

Abstract

Pharmacokinetic studies are key to evidence-based pharmacotherapy. The reliability of pharmacokinetic parameters is closely related to the quality of bioanalytical data. Bioanalytical method validation is fully described by regulatory guidelines; however, it is conducted just once. To ensure reliability and comparability of clinical data, appropriate quality control systems must be enforced to monitor post-validation bioanalytical runs. While single bioanalytical run evaluation is described in international guidelines, somehow, the long-term reproducibility of the bioanalytical method is unattended; it becomes pivotal with the involvement of pediatric population. Therefore, a customized quality control system was developed that addresses regulatory requirements and encompasses the specific demands of pediatric research. It consisted of continuous multi-parameter assessment, including calibration curves, quality control samples, incurred sample reanalysis, and internal standard data. The recommendations provided by the guidelines were combined with the additional Westgard rules, statistical evaluation, and graphical observations. The applicability of the developed quality control system was investigated by using data from three pediatric clinical trials, where the system was able to identify 16% of all analytical runs as invalid. Using a pooled standard deviation provided a better estimate of long-term reproducibility by calculating the %CV, which ranged from 3.6 to 10.3% at all quality control levels. Irrespective of the difficulties encountered owing to vulnerable pediatric populations, the incurred sample reanalysis fulfilled the regulatory requirement of at least 67%. This quality control approach ensured reliable and comparable results over a whole 31-month duration in relation to pediatric studies.

KEY WORDS

incurred sample reanalysis (ISR) in-study bioanalytical method validation LC-MS/MS pediatric clinical trial quality control 

Notes

Acknowledgments

We thank the clinical investigators, study nurses, and technicians Dr. Mareike van der Meulen, Annelies Hennink, Badies Manai, Dr. Vanessa Swoboda, Eva Wissmann, Regina Pirker, Dr. Daniel Tordas, Gyöngyi Máté, Ilona, Dr. Ann-Kathrin Holle, Claudia Schlesner, Prof Dr. Jovan Košutić, Dr. Sergej Prijić, Dr. Sanja Ninić, Dr. Bosiljka Jovičić, Dr. Saša Popović, Isailović Ljiljana, Andjelka Čeko, Nada Martinović, Perišić Miloš, Bosiljka Kosanović, Jelena Reljić, Prof Dr. Vojislav Parezanovic, Dr. Igor Stefanović, Dr. Andrija Pavlović, Dr. Stefan Đorđević, Dr. Maja Bijelić, Jasmina Maksimovic, Sanja Kostic, and Milica Lazic for their contribution by collecting the study samples within the LENA clinical sites. We further appreciated the support on statistical evaluation by Prof. Dr. Holger Schwender (Heinrich Heine University).

Funding Information

The research leading to these results has received funding from the European Union Seventh Framework Programme (FP7/2007–2013) under a grant agreement, no. 602295 (LENA). Mohsin Ali is funded by HEC/DAAD grant program.

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Copyright information

© American Association of Pharmaceutical Scientists 2019

Authors and Affiliations

  • Mohsin Ali
    • 1
  • Jutta Tins
    • 1
  • Bjoern B. Burckhardt
    • 1
    Email author
  • on behalf of LENA Consortium
  1. 1.Institute of Clinical Pharmacy and PharmacotherapyHeinrich Heine UniversityDusseldorfGermany

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