Abstract：
:Monitoring of BCR-ABL transcripts has become established practice in the management of chronic myeloid leukemia. However, nucleic acid amplification techniques are prone to variations which limit the reliability of real-time quantitative PCR (RQ-PCR) for clinical decision making, highlighting the need for standardization of assays and reporting of minimal residual disease (MRD) data. We evaluated a lyophilized preparation of a leukemic cell line (K562) as a potential quality control reagent. This was found to be relatively stable, yielding comparable respective levels of ABL, GUS and BCR-ABL transcripts as determined by RQ-PCR before and after accelerated degradation experiments as well as following 5 years storage at -20 degrees C. Vials of freeze-dried cells were sent at ambient temperature to 22 laboratories on four continents, with RQ-PCR analyses detecting BCR-ABL transcripts at levels comparable to those observed in primary patient samples. Our results suggest that freeze-dried cells can be used as quality control reagents with a range of analytical instrumentations and could enable the development of urgently needed international standards simulating clinically relevant levels of MRD.
journal_name
Leukemiajournal_title
Leukemiaauthors
Saldanha J,Silvy M,Beaufils N,Arlinghaus R,Barbany G,Branford S,Cayuela JM,Cazzaniga G,Gonzalez M,Grimwade D,Kairisto V,Miyamura K,Lawler M,Lion T,Macintyre E,Mahon FX,Muller MC,Ostergaard M,Pfeifer H,Saglio G,Sawdoi
10.1038/sj.leu.2404716subject
Has Abstractpub_date
2007-07-01 00:00:00pages
1481-7issue
7eissn
0887-6924issn
1476-5551pii
2404716journal_volume
21pub_type
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