Keywords
Interleukin 28B (IL28B)
Single Nucleotide Polymorphism (SNP)
Polymerase Chain Reaction (PCR)
Amplified Fragment Length Polymorphism Analysis
Cost Analysis
How to Cite
Abstract
Single nucleotide polymorphisms (SNPs, rs12979860 e rs8099917) in the Interferon Lambda 4 gene (IFNL4, formerly IFNL3 and/or IL28B) has been associated with failure in the innate immune response, sustained virological response in hepatitis C, and HTLV-1-associated myelopathy (HAM) development. To search for these polymorphisms several methodologies can be employed, such as sequencing, real-time or quantitative polymerase chain reaction (qPCR), restriction fragment length polymorphism analysis in PCR products (PCR-RFLP), and tetra-primer PCR. The present study compared the performance of the tetra-primer PCR in relation to the PCR-RFLP, both optimized in the Research HTLV Laboratory of the Center of Immunology of Instituto Adolfo Lutz in São Paulo. One hundred DNA samples obtained from patients of STD/Aids Reference Centre in São Paulo, previously analyzed for IL28B SNPs by PCR-RFLP were selected for analysis, after confirming that they represent all IL28B SNPs patterns described in the literature. The results obtained showed concordance between the PCR-RFLP and the tetra-primer PCR SNPs results, and because of the low cost, easy to perform, and minor employment of biological specimen and reagents, the tetra- primer PCR is of choice to be used in routine.
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