Open AccessThe Brazilian Network for HIV‐1 Genotyping External Quality Control Assurance Programme
Author(s) -
Souza Denise CF,
Sucupira Maria Cecilia A,
Brindeiro Rodrigo M,
Fernandez José Carlos C,
Sabino Ester C,
Inocencio Lilian A,
Diaz Ricardo S
Publication year - 2011
Publication title -
journal of the international aids society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.724
H-Index - 62
ISSN - 1758-2652
DOI - 10.1186/1758-2652-14-45
Subject(s) - genotyping , external quality assessment , medicine , quality assurance , human immunodeficiency virus (hiv) , medical physics , virology , genotype , pathology , genetics , biology , gene
The Brazilian network for genotyping is composed of 21 laboratories that perform and analyze genotyping tests for all HIV‐infected patients within the public system, performing approximately 25,000 tests per year. We assessed the interlaboratory and intralaboratory reproducibility of genotyping systems by creating and implementing a local external quality control evaluation. Plasma samples from HIV‐1‐infected individuals (with low and intermediate viral loads) or RNA viral constructs with specific mutations were used. This evaluation included analyses of sensitivity and specificity of the tests based on qualitative and quantitative criteria, which scored laboratory performance on a 100‐point system. Five evaluations were performed from 2003 to 2008, with 64% of laboratories scoring over 80 points in 2003, 81% doing so in 2005, 56% in 2006, 91% in 2007, and 90% in 2008 (Kruskal‐Wallis, p = 0.003). Increased performance was aided by retraining laboratories that had specific deficiencies. The results emphasize the importance of investing in laboratory training and interpretation of DNA sequencing results, especially in developing countries where public (or scarce) resources are used to manage the AIDS epidemic.