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Taqman Genotyping Assays Can Be Used on Decalcified and Paraffin‐embedded Tissue from Patients with Osteosarcoma by Melanie M. Hagleitner; Marieke J.H. Coenen; Judith W.M. Jeuken; Uta Flucke; H.W. Bart Schreuder; D. Maroeska W.M. te Loo; Peter M. Hoogerbrugge is a Medicine article available to read on EtoBox.
What is Taqman Genotyping Assays Can Be Used on Decalcified and Paraffin‐embedded Tissue from Patients with Osteosarcoma about?
## Abstract ## Background In cancers like osteosarcoma with a 5‐year overall survival of 50–60%, archived histological specimens can be a useful source of biological material. However, this material generally has been decalcified and formalin‐fixed for many years. In our study, we investigated whether DNA obtained from these tissues can be used for reliable single nucleotide polymorphism (SNP) genotyping. ## Procedure We studied two SNPs in the drug transporter __MDR1__ using Taqman® SNP genotyping assays. Genotypes of the germ line DNA derived from freshly isolated DNA of 20 surviving patients with osteosarcoma were compared with genotypes obtained from archived material from decalcified formalin‐fixed, paraffin‐embedded (FFPE) blocks of the same patients. ## Results Decalcified FFPE‐derived DNA yielded smaller PCR fragments compared to DNA extracted from peripheral blood cells, with a reliable size of ∼200 bp. However, we were able to evaluate each SNP in 19 of 20 cases included in this study. All successfully genotyped samples showed 100% concordance between genotypes obtained from DNA of FFPE tissue and the genotypes obtained from DNA of blood from the same patients. ## Conclus
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- Author
- Melanie M. Hagleitner; Marieke J.H. Coenen; Judith W.M. Jeuken; Uta Flucke; H.W. Bart Schreuder; D. Maroeska W.M. te Loo; Peter M. Hoogerbrugge
- Publisher
- John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 1545-5009)
- Published
- 2010
- Language
- EN
- Field
- Medicine (Health Sciences)