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Updated: Jul 31, 2026

Building Up a High-throughput Screening Platform to Assess the Heterogeneity of HER2 Gene Amplification in Breast Cancers
Published on: December 5, 2017
A new high frequency polymorphism in the HER-2/neu oncogene in normal tissue and breast tumors
W T Briscoe1, D B Ray, J L Airhart
1Cancer Treatment Research Foundation, Tulsa, OK 74137.
Abstract:
The HER-2/neu (erbB-2) oncogene, if amplified and/or overexpressed in breast and ovarian cancers, is associated with a poor prognosis. Employing direct DNA sequencing, we have discovered and sequenced an 80 base pair intron from human placenta which contains an A to G polymorphism. This polymorphism lends itself to restriction fragment length polymorphism analysis of the PCR product spanning this intron. All three genotypes, homozygous A, heterozygous, and homozygous G appear in normal control populations and breast tumors. Also, no difference was seen between the polymorphic form found in five breast cancers and the corresponding normal tissue.
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