Identification of Colorectal Cancer Biomarkers by Serum Protein Profiling
Posted Dec 10 2009 4:00pm
Description of Invention: This invention describes serum features that distinguish colorectal carcinoma malignant patient samples versus healthy samples using surface-enhanced laser desorption ionization time-of-flight (SELDI-TOF) mass spectrometry. By comparing healthy versus malignant samples, the investigators were able to identify thirteen (13) serum features that have been validated using an independently collected, blinded validation set of 55 sera samples. The features are characterized by the mass to charge ratio (m/z ratio). The investigators have shown that SELDI-TOF based serum marker protein profiling enables minimally invasive detection of colon cancer with 96.7 percent sensitivity and 100 percent specificity.
Colorectal cancer is the third most common cancer and the third leading cause of cancer-related mortality in the United States. Current diagnostic methods for colorectal cancer have a large non-compliance rate because of discomfort, e.g., sigmoidoscopy or colonoscopy, or have a high rate of false positive results, e.g., fecal occult blood tests. The claimed invention has the potential to be a widely used, easy-to-use, and inexpensive diagnostic.
JK Habermann et al. Increased serum levels of complement C3a anaphylatoxin indicate the presence of colorectal tumors. Gastroenterology. 2006 Oct;131(4):1020-1029. [ PubMed abs ]
Licensing Status: Available for licensing.
Portfolios: Cancer Cancer - Diagnostics Cancer - Therapeutics
For Additional Information Please Contact: Surekha Vathyam Ph.D. NIH Office of Technology Transfer 6011 Executive Blvd. Suite 325, Rockville, MD 20852 United States Email: vathyams@mail.nih.gov Phone: 301-435-4076 Fax: 301-402-0220
Description of Invention:
This invention describes serum features that distinguish colorectal carcinoma malignant patient samples versus healthy samples using surface-enhanced laser desorption ionization time-of-flight (SELDI-TOF) mass spectrometry. By comparing healthy versus malignant samples, the investigators were able to identify thirteen (13) serum features that have been validated using an independently collected, blinded validation set of 55 sera samples. The features are characterized by the mass to charge ratio (m/z ratio). The investigators have shown that SELDI-TOF based serum marker protein profiling enables minimally invasive detection of colon cancer with 96.7 percent sensitivity and 100 percent specificity.
Colorectal cancer is the third most common cancer and the third leading cause of cancer-related mortality in the United States. Current diagnostic methods for colorectal cancer have a large non-compliance rate because of discomfort, e.g., sigmoidoscopy or colonoscopy, or have a high rate of false positive results, e.g., fecal occult blood tests. The claimed invention has the potential to be a widely used, easy-to-use, and inexpensive diagnostic.
Inventors:
Thomas K Ried (NCI)
Jens Habermann (NCI)
Patent Status:
HHS, Reference No. E-106-2005/0
US, Application No. 11/886,886 filed 21 Sep 2007
Relevant Publication:
Licensing Status:
Available for licensing.
Portfolios:
Cancer
Cancer - Diagnostics
Cancer - Therapeutics
For Additional Information Please Contact:
Surekha Vathyam Ph.D.
NIH Office of Technology Transfer
6011 Executive Blvd. Suite 325,
Rockville, MD 20852
United States
Email: vathyams@mail.nih.gov
Phone: 301-435-4076
Fax: 301-402-0220
Ref No: 1300
Updated: 12/2009