Abstract
The p53 tumor suppressor gene encodes a 53-kD nuclear phosphoprotein and is the most commonly altered gene in human cancers (1). There are a large variety of methods currently employed for detection of alterations in thep53 gene. The reported abnormalities in p53 have been detected with a variety of techniques including immunohistochemical staining (IHCS) as a primary screening modality and less frequently single-strand conformation polymorphism (SSCP) screening. However, certain mutations such as frameshift mutations may not be detectable by IHCS, and most studies using SSCP have limited their search to exons 5-8 (2). As shown previously by our lab, this strategy can lead to underreporting of the true frequency of p53 null mutations (3). We routinely perform a complete evaluation of the p53 open reading frame (exons 2-11) using SSCP analysis with an estimated sensitivity of over 90% (3). This approach significantly enhances the detection of null mutations, especially insertion/deletion type mutations.
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References
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Sood, A.K., Buller, R.E. (2000). SSCP and Sequence Analysis of p53 Mutations in Ovarian Tumors. In: Bartlett, J.M.S. (eds) Ovarian Cancer. Methods in Molecular Medicineā¢, vol 39. Humana Press. https://doi.org/10.1385/1-59259-071-3:323
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DOI: https://doi.org/10.1385/1-59259-071-3:323
Publisher Name: Humana Press
Print ISBN: 978-0-89603-583-6
Online ISBN: 978-1-59259-071-1
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