Evaluation of the Association of Polymorphisms in the Innate Immune System With the Risk for Cryptococcus Neoformans Infection in Patients Not Infected With HIV and Complications Associated With Cryptococcus Neoformans Infection - Full Text View

Purpose

Innate immunity plays an important role for fungal recognition and initiation of fungicidal activity. We hypothesize that subtle differences in different molecules of innate immunity may contribute to either the predisposition or clinical course of infection with Cryptococcus neoformans. To test this hypothesis, we propose to analyze the allelic frequencies of 15 different genes (mannose binding lectin, Fc-gamma receptor IIa and IIb, Fc-gamma receptors IIIa and IIIb, myeloperoxidase, tumor necrosis factor-alpha and -beta, interleukin 1A and 1B, interleukin-1 receptor antagonist, interleukin-10, NRAMP-1, chitotriosidase, and chemokine receptor 5) and their intragenic polymorphic forms and to compare this data to the incidence and severity of C neoformans infection. With this study we hope to identify a group of molecules of innate immunity which influence the risk and severity of invasive C neoformans infection.

Condition
Cryptococcosis


Study Type:	Observational
Official Title:	Evaluation of the Association of Polymorphisms in the Innate Immune System With the Risk for Cryptococcus Neoformans Infection in Patients Not Infected With HIV and Complications Associated With Cryptococcus Neoformans Infection

Resource links provided by NLM:

MedlinePlus related topics: HIV/AIDS

Genetic and Rare Diseases Information Center resources: Cryptococcosis

U.S. FDA Resources

Further study details as provided by National Institutes of Health Clinical Center (CC):


Estimated Enrollment:	300
Study Start Date:	July 29, 1998
Primary Completion Date:	June 21, 2007 (Final data collection date for primary outcome measure)

Detailed Description:

Innate immunity plays an important role for fungal recognition and initiation of fungicidal activity. We hypothesize that subtle differences in different molecules of innate immunity may contribute to either the predisposition or clinical course of infection with Cryptococcus neoformans. To test this hypothesis, we propose to analyze the allelic frequencies of 15 different genes (mannose binding lectin, Fc-gamma receptor IIa and IIb, Fc-gamma receptors IIIa and IIIb, myeloperoxidase, tumor necrosis factor-alpha and -beta, interleukin 1A and 1B, interleukin-1 receptor antagonist, interleukin-10, NRAMP-1, chitotriosidase, and chemokine receptor 5) and their intragenic polymorphic forms and to compare this data to the incidence and severity of C neoformans infection. With this study we hope to identify a group of molecules of innate immunity which influence the risk and severity of invasive C neoformans infection.

Eligibility


Ages Eligible for Study:	Child, Adult, Senior
Sexes Eligible for Study:	All
Accepts Healthy Volunteers:	No

Criteria

INCLUSION CRITERIA:

Patients diagnosed with Cryptococcus neoformans infection will be identified from a data base overseen by Dr. Peter Pappas.

Only patients diagnosed and treated in the United States and Canada will be included in this analysis.

Only patients who are not coinfected with HIV will be included in the study.

Patient samples will be collected and clinical data will be evaluated only after signed informed consent has been obtained.

Contacts and Locations

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT00001701

Locations


United States, Alabama
University of Alabama
Birmingham, Alabama, United States

Sponsors and Collaborators

National Cancer Institute (NCI)

More Information

Publications:

Bellamy R, Ruwende C, Corrah T, McAdam KP, Whittle HC, Hill AV. Variations in the NRAMP1 gene and susceptibility to tuberculosis in West Africans. N Engl J Med. 1998 Mar 5;338(10):640-4.

Blakemore AI, Tarlow JK, Cork MJ, Gordon C, Emery P, Duff GW. Interleukin-1 receptor antagonist gene polymorphism as a disease severity factor in systemic lupus erythematosus. Arthritis Rheum. 1994 Sep;37(9):1380-5.

Boot RG, Renkema GH, Strijland A, van Zonneveld AJ, Aerts JM. Cloning of a cDNA encoding chitotriosidase, a human chitinase produced by macrophages. J Biol Chem. 1995 Nov 3;270(44):26252-6.


ClinicalTrials.gov Identifier:	NCT00001701 History of Changes
Other Study ID Numbers:	980137 98-C-0137
Study First Received:	November 3, 1999
Last Updated:	January 24, 2017

Keywords provided by National Institutes of Health Clinical Center (CC):


Risk Factor Genetic Variant Alleles Cancer Transplantation

Additional relevant MeSH terms:


Infection Cryptococcosis Mycoses

ClinicalTrials.gov processed this record on June 23, 2017