JAN 26, 2016 8:00 AM PST

WEBINAR: Concordance of PTEN gene status in circulating tumor cells and tumor tissue from mCRPC patients

Sponsored by: Epic Sciences, Epic Sciences
Speaker

Abstract
DATE: January 26th, 2016
TIME: 8am pacific, 11am eastern

PTEN gene loss occurs frequently in castration-resistant prostate cancer (CRPC) and may drive progression through activation of the PI3K/AKT pathway. Here, we developed a novel CTC-based assay to determine PTEN status and examined the correlation between PTEN status in CTCs and matched tumour tissue samples. PTEN gene status in CTCs was evaluated on an enrichment-free platform (Epic Sciences) by fluorescence in situ hybridisation (FISH). PTEN status in archival and fresh tumour tissue was evaluated by FISH and immunohistochemistry.  Peripheral blood was collected from 76 patients. Matched archival and fresh cancer tissue was available for 48 patients. PTEN gene status detected in CTCs was concordant with PTEN status in matched fresh tissues and archival tissue in 32 of 38 patients (84%) and 24 of 39 patients (62%), respectively. CTC counts were prognostic (continuous, P ¼ 0.001). PTEN loss in CTCs associated with worse survival in univariate analysis (HR 2.05; 95% CI 1.17–3.62; P ¼ 0.01) and with high lactate dehydrogenase (LDH) in metastatic CRPC patients. Our results illustrate the potential use of CTCs as a non-invasive, real-time liquid biopsy to determine PTEN gene status. The prognostic and predictive value of PTEN in CTCs warrants investigation in CRPC clinical trials of PI3K/AKT-targeted therapies.
 

Show Resources
You May Also Like
MAY 11, 2021 10:00 AM PDT
C.E. CREDITS
MAY 11, 2021 10:00 AM PDT
Date: May 11, 2021 Time: 10:00zm PDT Your samples are some of the most valuable assets in the laboratory. After spending countless hours on extraction and preparation, your conclusions could...
JUL 15, 2021 8:00 AM PDT
C.E. CREDITS
JUL 15, 2021 8:00 AM PDT
Date: July 15, 2021 Time: 8:00am (PDT), 11:00am (EDT) High dimensional full spectrum flow cytometry grants unprecedented access to previously unattainable parameters in cellular biology. Flu...
SEP 14, 2021 7:00 AM PDT
C.E. CREDITS
SEP 14, 2021 7:00 AM PDT
Date: September 14, 2021 Time: 7am PDT, 10am EDT, 4pm CEST A conventional thermal cycler has long been a commodity product in the lab and end-point PCR techniques can be completed almost wit...
JUN 09, 2021 7:00 AM PDT
C.E. CREDITS
JUN 09, 2021 7:00 AM PDT
Date: June 9, 2021 Time: 09 June 2021, 7am PDT, 10am EDT, 4pm CEST cells with dramatic implications on the validity of past cell culture related research. The fact that at least 509 cell lin...
JUN 03, 2021 8:00 AM PDT
JUN 03, 2021 8:00 AM PDT
Date: June 3, 2021 Time: 8:00am (PDT), 11:00am (EDT), 5:00pm (CEST) Molecular combing provides unbiased quantification and characterization of DNA structure and dynamics by imaging single DN...
OCT 27, 2021 8:00 AM PDT
C.E. CREDITS
OCT 27, 2021 8:00 AM PDT
Date: October 27, 2021 Time: 8:00am (PDT), 11:00am (EDT) Learn about how brightfield images can take your flow cytometry data to the next level. Join Dr. Cora Chadick, Technical Director, as...
Loading Comments...
Show Resources