Skip to content. | Skip to navigation

National Cancer Institute U.S. National Institutes of Health


Personal tools

You are here: Home / Biomarkers / GNB4



This biomarker is also known as:
  • transducin beta chain 4,
  • guanine nucleotide binding protein (G protein), beta polypeptide 4,
  • Transducin beta chain 4,
  • G protein beta-4 subunit,
  • guanine nucleotide binding protein beta subunit 4,
  • guanine nucleotide-binding protein subunit beta-4,

View in BioMuta


GNB4 is the beta subunit of a heterotrimeric guanine nucleotide-binding protein (G protein). These proteins also have alpha and gamma subunits. GNB4 and other beta subunits are important regulators of alpha subunits, as well as of certain signal transduction receptors and effectors. Each type of subunit is encoded by families of related genes.


QA State: Curated
Type: Protein
Short Name:


There are no datasets associated with this biomarker.


The following organs have data associated with this biomarker…



Phase: Two
QA State: Under Review


No additional breast data available.

Performance Comment

GNB4 was one of numerous potential early detection biomarkers specific to triple-negative breast cancer in multiple pathways identified.


This biomarker is currently being annotated or is under review. You must be logged in or do not have permission to view any additional information. Contact Heather Kincaid at if you should have access to this biomarker.

Announcement 10/07/2014

EDRN Patient Advocates will host an EDRN Advocacy Educational Webinar, Biomarkers for Prostate Cancer Detection and Monitoring, on Monday, January 12th, 2015, at 1 p.m. EDT / 10 a.m. PDT. Registration is not required for this. Please click for more information.
Announcement 09/14/2014

Thank you to everyone who helped make the 9th EDRN Scientific Workshop a success. We look forward to seeing everyone at the 28th EDRN Steering Committee Meeting from March 31-April 2, 2015, in Atlanta, GA.