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This biomarker is also known as:
  • Rho guanine nucleotide exchange factor (GEF) 16,
  • rho guanine nucleotide exchange factor 16,
  • ephexin-4,
  • Rho guanine exchange factor (GEF) 16,
  • GEF16,
  • NBR,
  • Ephexin-4,

View in BioMuta


ARHGEF16 is a guanine nucleotide exchange factor. Guanine nucleotide exchange factors regulate the activation of Rho-like GTPases. Guanidine exchange factors promote the GTP activation of Rho GTPase's by catalyzing the exchange of GDP for GTP.


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


ARHGEF16 is a nucleotide exchange factor involved in regulating the activation of Rho-like GTPases. When the regulation occurs incorrectly, ARHGEF16 and other nucleotide exchange factors can aid malignant transformation.

Performance Comment

ANO1 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.

2015 Steering Committee Meeting

The next EDRN Steering Committee Meeting will take place March 31st through April 2nd, 2015, in Atlanta, Georgia.

Announcement 12/02/2014

New Round of EDRN FOAs

The RFAs for EDRN have been released:
- Biomarker Developmental Laboratories (U01),
- Clinical Validation Centers (U01),
- Biomarker Reference Laboratories (U24),
- Data Management and Coordinating Center (U24).

EDRN Renewal flyer NOTE-New receipt deadline for applications submitted for all EDRN FOAs is January 20, 2015, by 5:00 PM local time of applicant organization.

There will be a Pre-Application webinar to discuss each of the four individual EDRN FOAs on Tuesday, December 2nd, 2014, from 1pm-5pm (Eastern). Potential applicants interested in participating in the webinar should send a message to Dr. Sharmistha Ghosh ( no later than 5:00 p.m. (EST) November 21, 2014. Please mention the FOA of interest in the subject line.

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.