Abstract P2-05-29: The molecular subtype has greater influence on prognosis of breast cancer than age at diagnosis

Conclusions: The present study is the first to investigate PTEN protein loss in a large set of non-familial breast carcinomas based on their DNA MMR status by IHC. Here, we demonstrated that PTEN strong and homogeneous expression by IHC is able to capture the vast majority of MMR-proficient non-familial breast cancers. Our findings broaden the understanding of the biology underpinning these tumors, suggesting that PTEN is likely play a role in the development of MMR alterations. Given that PTEN-defective breast cancers have the propensity to develop additional somatic alterations in the MMR system, our results suggest that IHC for PTEN and MMR proteins may be emplyed as an ancillary study to define new subclasses of sporadic breast cancers potentially eligible for iPARPs therapies.Citation Format: Kim HS, Eom YH, Song BJ, Chae BJ. The molecular subtype has greater influence on prognosis of breast cancer than age at diagnosis [abstract]. In: Proceedings of the Thirty-Ninth Annual CTRC-AACR San Antonio Breast Cancer Symposium; 2016 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2017;77(4 Suppl):Abstract nr P2-05-29.
Source: Cancer Research - Category: Cancer & Oncology Authors: Tags: Poster Session Abstracts Source Type: research