Title: Multiallelic synthetic quality control material: Lessons learned from the cystic fibrosis external quality assessment scheme
Authors: Berwouts, Sarah
Christensen, Todd M
Brandon, Jill
Bejjani, Bassem A
Barton, David E
Dequeker, Els # ×
Issue Date: 10-Apr-2011
Publisher: Mary Ann Liebert, Inc. Publishers
Series Title: Genetic Testing and Molecular Biomarkers vol:15 issue:9 pages:579-586
Abstract: Aim: With the arrival of increasingly complex molecular tests, we are obliged to create new ways to monitor and troubleshoot the underperformance of these multiplex assays. A synthetic multiallelic quality control material has been designed to augment genomic DNA controls. We aimed to evaluate the control on a large scale, testing it on a wide variety of oligonucleotide ligation assays, test protocols, and analysis software. In addition, we investigated how laboratories treat untried and complex materials. Methods: The synthetic control monitored 32 cystic fibrosis transmembrane conductance regulator mutations and polymorphisms simultaneously. Participants of a cystic fibrosis external quality assessment scheme were invited to analyze the quality control. Results: In total, 58 laboratories participated in this study. Twenty-seven (47%) laboratories detected 32 variants; another 27 laboratories (47%) detected from 31 to 4 variants and 4 participants reported no variants (6%). The main observations included administrative errors when indicating variants on a checklist, errors caused by misreading the instructions for use of the control or assay, and technical problems related to the assay used. Conclusion: Synthetic quality control materials proved to be valuable in troubleshooting underperforming assays and complement existing genomic controls. The study also revealed a strong need for increased quality control in the postanalytical phase of testing.
ISSN: 1945-0265
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Biomedical Quality Assurance Research Unit
× corresponding author
# (joint) last author

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