Abstract

Colorectal cancer is the second leading cause of cancer death in the United States. In 1996, approximately 133,500 new cases will occur and approximately 55,000 persons will die from this disease. Several studies have shown that screening asymptomatic populations for colorectal neoplasia can reduce mortality. Molecular genetic studies have demonstrated that the mutational activation of ras proto-oncogenes and mutational inactivation of tumor suppressor genes are associated with colorectal tumorigenesis. The objective of this proposal is to explore genetic approaches for early detection of colorectal cancer. We seek to achieve the following: 1. Generate a robust method for detecting ras gene mutations in stool specimens in an effort to provide a single specimen screening test for colorectal cancer. Evaluate test sensitivity and specificity through retrospective analysis of stool samples previously obtained from subjects with documented carcinomas or adenomas. 2. Compare the genetic method for detecting fecal ras oncogene mutation with an immunochemical test for fecal occult blood in a prospective study in patients undergoing surveillance colonoscopy.

  Funding Agency

Agency
National Institute of Health (NIH)
Institute
National Cancer Institute (NCI)
Type
Specialized Center (P50)
Project #
5P50CA062924-06
Application #
6102961
Study Section
Project Start
1999-01-01
Project End
1999-12-31
Budget Start
1998-10-01
Budget End
1999-09-30
Support Year
6
Fiscal Year
1999
Total Cost
Indirect Cost

  Institution

Name
Johns Hopkins University
Department
Type
DUNS #
045911138
City
Baltimore
State
MD
Country
United States
Zip Code
21218

  Publications

Li, Yuguo; Qiao, Yuan; Chen, Hanwei et al. (2018) Characterization of tumor vascular permeability using natural dextrans and CEST MRI. Magn Reson Med 79:1001-1009
Saung, May Tun; Muth, Stephen; Ding, Ding et al. (2018) Targeting myeloid-inflamed tumor with anti-CSF-1R antibody expands CD137+ effector T-cells in the murine model of pancreatic cancer. J Immunother Cancer 6:118
Canto, Marcia Irene; Almario, Jose Alejandro; Schulick, Richard D et al. (2018) Risk of Neoplastic Progression in Individuals at High Risk for Pancreatic Cancer Undergoing Long-term Surveillance. Gastroenterology 155:740-751.e2
Makohon-Moore, Alvin P; Matsukuma, Karen; Zhang, Ming et al. (2018) Precancerous neoplastic cells can move through the pancreatic ductal system. Nature 561:201-205
Chu, Nam; Salguero, Antonieta L; Liu, Albert Z et al. (2018) Akt Kinase Activation Mechanisms Revealed Using Protein Semisynthesis. Cell 174:897-907.e14
Felsenstein, Matthäus; Noë, Michaël; Masica, David L et al. (2018) IPMNs with co-occurring invasive cancers: neighbours but not always relatives. Gut 67:1652-1662
Grant, Robert C; Denroche, Robert E; Borgida, Ayelet et al. (2018) Exome-Wide Association Study of Pancreatic Cancer Risk. Gastroenterology 154:719-722.e3
Tie, Jeanne; Cohen, Joshua D; Wang, Yuxuan et al. (2018) Serial circulating tumour DNA analysis during multimodality treatment of locally advanced rectal cancer: a prospective biomarker study. Gut :
Adler, B L; Pezhouh, M K; Kim, A et al. (2018) Histopathological and immunophenotypic features of ipilimumab-associated colitis compared to ulcerative colitis. J Intern Med 283:568-577
Ma, Qianqian; Gabelli, Sandra B; Raben, Daniel M (2018) Diacylglycerol kinases: Relationship to other lipid kinases. Adv Biol Regul :

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