Development of Sci B Vac: a Pre-S 1 /Pre-S 2 /S Hepatitis B Vaccine Daniel Shouval Liver Unit Hadassah and Hebrew University JerusalemIsrael.

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Presentation transcript:

Development of Sci B Vac: a Pre-S 1 /Pre-S 2 /S Hepatitis B Vaccine Daniel Shouval Liver Unit Hadassah and Hebrew University JerusalemIsrael

Geographic Distribution of Chronic Hepatitis B Infection HBsAg Prevalence  8% - High 2-7% - Intermediate <2% - Low

Hepatitis B Vaccine s s Vaccines rDNA I II III

By /193 WHO member countries added HBV vaccination in their national immunization program Weekly epidemiological record No. 40, 2009, 84, 405

ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה 7 Bio-Hep-B / Sci-B-Vac Clinical Overview

ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה 8 Production of Sci B Vac-B Vaccine (Flow Chart)

ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה 9 Clinical Studies by Type

ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה 10 Pivotal Studies

ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה 11 Supporting Studies

ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה 12 Controlled Comparative Clinical Trials

ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה 13 Demographics, Adult Study Populations

ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה 14 Demographics, Children Study Populations

ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה 15 Demographics, Neonate Study Populations

ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה 16 Anti-HBs antibody titers in recipients of Sci B Vac and Engerix B at month 7

ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה 17 The effect of body weight on immunogenicity

ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה 18 Anti-HBs titers in neonates at month 9

ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה 19 Distribution of Neonates Based on Maternal HBV Marker Status

ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה 20 Seroprotection Rate (%) in Immunized Newborns Born to HBsAg + Carrier Mothers According to HBeAg Status of the Mother

ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה ט"ז/תמוז/תשע"ה 21 Incidence of Non/Hyporesponders in Adults, Children and Neonates

Comparative Immunogenicity of Hepatitis B Vaccines* Protocol Protocol N - 36 (20M/16F) N - 36 (20M/16F) Mean age - 23y (19-28) Mean age - 23y (19-28) Protocol - 2 doses of BioHep B 10 µ g/dose Protocol - 2 doses of BioHep B 10 µ g/doseor - 2 doses of Engerix B 20 µ g/dose - 2 doses of Engerix B 20 µ g/dose Time of I.m. injection: day 0; 6 months Time of I.m. injection: day 0; 6 months * Shapira MY, Zeira E, Adler R, Shouval D. Rapid seroprotection against hepatitis B following* Shapira MY, Zeira E, Adler R, Shouval D. Rapid seroprotection against hepatitis B following the first dose of Pre-S1/Pre-S2/S vaccine. J. Hepatology 34(1): , 2 the first dose of Pre-S1/Pre-S2/S vaccine. J. Hepatology 34(1): , 2

Comparative Immunogenicity of Two Hepatitis B Vaccines* 00 60% 12.5% 70% 25% 100% seroprotection (%) time after priming (months) Bio -Hep-B Engerix-B V V Shapira M et al. J Hepatology 2000, in press*

Immunogenicity of Pre-S vaccine* in Children Age: 2m - 11y anti-HBs, mIU/ml *Bi0Hep B

Distribution of abti-HBs titers following three doses of vaccine

Enhanced immunogenicity of Sci-B-Vac in dialysis patients with kidney failure Sci-B-Vac – 20  g (n=9) HB-Vax- II – 10  g (n=12) Anti-HBs, mIU/ml days

Factors Related to Non-response to Hepatitis B Vaccines* Genetically determined resistance Advanced age Overweight Age Gender Smoking Immune suppression Chronic liver disease Miscellaneous (RF, systemic disease etc.) Pre-S enhancing attenuating

Non / hypo responders to conventional vaccination Non / hypo responders to conventional vaccination Health care workers Health care workers Immune suppressed patients including: Immune suppressed patients including: HIV, chronic renal failure / dialysis patients; organ transplant recipients HIV, chronic renal failure / dialysis patients; organ transplant recipients Possible Applications for New Hepatitis B Pre-S/S Vaccines with Enhanced Immunogenicity

Three generations of HBV Plasma derived vaccines rDNA Yeast derived rDNA Mammalian cell derived vaccines