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PreHevbrio: how was the first human dose set?

hepatitis B vaccine (recombinant), 3-antigen · HBsAg S/pre-S1/pre-S2 VLPs
First-in-human starting dose
Selection not stated; legacy dose-ranging studies (5 and 10 µg), one with an initial first-in-human part up to 20 µg
“The studies were conducted inIsrael, Thailand, and Singapore. They were open-label, comprising two dose regimens, 5 and 10 µg. One had a preliminary phase 1 FIH part with a dosage up to 20 µg.”
✓ VerifiedEMA assessment report, p. 31Source ↗
NOAEL / key findings
No NOAEL stated; injection-site reactions and expected lymphoid hyperplasia only, no other systemic effects
“Based on the limited data submitted, the vaccine caused typical location reactions at the injection sites but did not cause any systemic effects other than the expected lymphoid hyperplasia.”
✓ VerifiedFDA summary basis for approval, p. 12Source ↗

Same question, other vaccines

Flublok

influenza vaccine, recombinant hemagglutinin · Influenza HA
Antigen content of quadrivalent product matched licensed trivalent vaccine plus a second B strain; no separate dose-finding

Arexvy

respiratory syncytial virus vaccine, adjuvanted (AS01E) · RSV preF3; TLR4 (AS01E adjuvant)
Not stated for first-in-human; final 120 µg RSVPreF3 + 50 µg AS01E dose selected on clinical data

Cervarix

human papillomavirus bivalent (types 16, 18) vaccine, recombinant, AS04-adjuvanted · HPV 16/18 L1 VLPs; TLR4 (AS04 adjuvant)
Not stated in public reviews

Cyfendus

anthrax vaccine adsorbed, adjuvanted · B. anthracis PA; TLR9 (CpG 7909 adjuvant)
Not stated in public reviews

Fendrix

hepatitis B vaccine (rDNA), AS04C-adjuvanted · HBsAg VLPs; TLR4 (AS04C adjuvant)
Not stated in public reviews

Gardasil

human papillomavirus quadrivalent (types 6, 11, 16, 18) vaccine, recombinant · HPV 6/11/16/18 L1 VLPs
Not stated in public reviews

Gardasil 9

human papillomavirus 9-valent vaccine, recombinant · HPV 9-valent L1 VLPs
Not stated in public reviews

HBVaxPro

hepatitis B vaccine (rDNA) · HBsAg VLPs
Not stated in public reviews

Heplisav-B

hepatitis B vaccine (recombinant), adjuvanted · HBsAg; TLR9 (CpG 1018 adjuvant)
Not stated in public reviews

Mosquirix

RTS,S/AS01 malaria vaccine · P. falciparum CSP-HBsAg (RTS,S) VLPs; TLR4 (AS01 adjuvant)
Not stated in public reviews

Nuvaxovid

COVID-19 vaccine, recombinant spike protein nanoparticle, Matrix-M-adjuvanted · SARS-CoV-2 spike (nanoparticle)
Not stated in public reviews

Shingrix

zoster vaccine recombinant, AS01B-adjuvanted · VZV glycoprotein E; TLR4 (AS01B adjuvant)
Not stated in public reviews

Summary across all 13 vaccines →