Pathological Complete Response with Neoadjuvant Trastuzumab, Pertuzumab, and Chemotherapy Followed by Modified Radical Mastectomy in a Patient with HER2-Positive Occult Breast Cancer.

BACKGROUND Occult breast cancer (OBC) is diagnosed when regional or distant metastases are found without evidence of a primary tumor. The low overall incidence is a great challenge for the management strategy of OBC. Aggressive diagnosis and personalized treatment are feasible treatment strategies for OBC.

Plasma exosome-derived circGAPVD1 as a potential diagnostic marker for colorectal cancer.

Although circular RNAs (circRNAs) have recently garnered interest as disease markers, they have been relatively poorly studied as a biomarker in colorectal cancer (CRC). In this study, we aimed to screen the exosome-derived circRNAs in CRC and explore their potential as diagnostic and prognostic biomarkers of CRC METHODS: Exosomes were extracted from the plasma using a kit and validated by immunoblotting, transmission electron microscopy, and particle size analysis. The microarray datasets were employed to identify differentially-expressed circRNAs from plasma exosomes.