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Published byHarvey Carr Modified over 8 years ago
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Update on the Development of a Group A Streptococcal Vaccine Fran A. Rubin, Ph.D. Program Officer for Group A Streptococci Respiratory Diseases Branch Division of Microbiology and Infectious Diseases National Institute of Allergy and Infectious Diseases National Institutes of Health Department of Health and Human Services
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F Basic Research F Genomic sequencing (M1, M3 and M18) F Contracts for applied clinical research F Partnerships with industry F Clinical trial network F Workshop (NVPO support) NIAID Activities
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Development of a GAS Vaccine F Target identification F Preclinical –Immunogenicity –Animal protection and/or colonization status F Toxicology –Standard toxicology –Tissue cross-reactivity –Histopathology (related to route) F Human clinical trials –Novel vector –Parenteral vs mucosal routes –Dose – concentration and schedule
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Obstacles in the Development of a GAS Vaccine F Cross-reactivity of M protein epitopes with human tissue (heart, kidney) F Limited animal models –Mouse for skin infections –Macques for pharyngitis (recent) F Immunological studies F Pathogenesis not understood
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Recent advances/opportunities F Genomic sequencing/proteomics/microarrays –Identification of new targets F Immunogenetic studies –Specific leukocyte antigen class II haplotypes associated with protection/risk of severe disease F Epidemiology studies –Current data on circulating M serotypes –Longitudinal surveillance in school children
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Vaccine Candidates F M protein based –Type-specific-Jim Dale –Conserved region-Vince Fischetti –Combination-Michael Good F Surface proteins –C5a peptidase - Pat Cleary –Sfb – Singh Chhatwal F Streptococcal pyrogenic exotoxins –Spe A and/or C – Pat Schlievert –Spe B – Jim Musser
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DMID Partnership Program F Industry participation To facilitate collaborative partnerships among industry, academia, and government to develop novel approaches for controlling infectious diseases.
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Partnerships for Product Development Target identification Preclinical development Clinical trials
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DMID Partnership Program F FY03 Initiatives –Biodefense u Vaccines, adjuvants, therapeutics, diagnostics u Clinical resources –Non-biodefense RFA: 03-003 u Novel therapies against hepatitis B virus u Strategies for control of arthropod vector-borne diseases http://grants1.nih.gov/grants/guide/rfa-files/RFA-AI-03-003.html
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Partnership : FY04 Initiative F Vaccines –Group A streptococci (GAS) –Group B streptococci (GBS) –Helicobacter pylori F Point of care diagnostics –GAS and GBS
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Workshop on Prevention of GAS Diseases and their Sequelae F Clinical investigators F Research scientists F Members of international community F US government agencies (NIH, CDC and FDA) F Industrial partners
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Workshop on Prevention of GAS Diseases and their Sequelae F Identify gaps in scientific understanding F Identify logistical and scientific barriers to evaluation of vaccines F Develop a strategic plan
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