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Heplisav-B: what safety margin did regulators accept?

hepatitis B vaccine (recombinant), adjuvanted · TLR9 (CpG 1018 adjuvant)
Safety margin at NOAEL
Monkey NOAEL 0.5 mg/kg CpG adjuvant, >10-fold the clinical mg/kg dose, for systemic immunostimulation
“It should be noted that other systemic manifestations of TLR9 immunostimulation were seen in monkeys (i.e. spleen hyperplasia from 2.5 mg/kg/w and lymph node hyperplasia and liver inflammation at 12.5 mg/kg/w). Of importance, a NOAEL of 0.5 mg/kg 1018 ISS (>10-fold the clinical dose on mg/kg basis) for systemic immunostimulatory effects was identified in this study.”
✓ VerifiedEMA assessment report, p. 28Source ↗
NOAEL / key findings
Monkey NOAEL 0.5 mg/kg CpG 1018 (>10-fold clinical) for systemic immunostimulation; spleen and lymph node hyperplasia, liver inflammation at higher doses
“It should be noted that other systemic manifestations of TLR9 immunostimulation were seen in monkeys (i.e. spleen hyperplasia from 2.5 mg/kg/w and lymph node hyperplasia and liver inflammation at 12.5 mg/kg/w). Of importance, a NOAEL of 0.5 mg/kg 1018 ISS (>10-fold the clinical dose on mg/kg basis) for systemic immunostimulatory effects was identified in this study.”
✓ VerifiedEMA assessment report, p. 28Source ↗

Same question, other oligonucleotides

Amondys 45

casimersen · DMD exon 45 (PMO)
Juvenile rat no-effect dose (300 mg/kg) ~4x human AUC at 30 mg/kg/week

Amvuttra

vutrisiran · TTR (siRNA)
NOAELs (150 mg/kg rat, 300 mg/kg monkey monthly) ~600x and ~4400x human AUC at 25 mg Q3M

Dawnzera

donidalorsen · Prekallikrein / KLKB1 (ASO)
Monkey NOAEL 6 mg/kg/wk: ~29x (monthly) and ~58x (Q8W) clinical exposure

Exondys 51

eteplirsen · DMD exon 51 (PMO)
Low: NOAEL exposure 3.4x human in monkey and <1x in mdx mouse (surrogate); highest doses 17-20x

Givlaari

givosiran · ALAS1 (siRNA)
No adverse findings at 3.5-fold (rat) and 26.3-fold (monkey) the exposure at the maximum recommended human dose

Izervay

avacincaptad pegol · C5 (aptamer)
Dog intravitreal NOAEL 1.0 mg/eye = 0.66x the recommended clinical dose

Kynamro

mipomersen · APOB (ASO)
Monkey chronic (12-month) NOAEL 10 mg/kg/week approximates clinical exposure at 200 mg/wk (body surface area)

Leqvio

inclisiran · PCSK9 (siRNA)
NOAEL ~48.9x (rat) and ~99.6x (monkey) human AUC at 300 mg; 99x/101x by Cmax

Macugen

pegaptanib · VEGF-165 (aptamer)
Rat IV NOAEL plasma concentration ~240x human Cmax at 3 mg/eye

Oxlumo

lumasiran · HAO1 (siRNA)
Rat NOAEL 200 mg/kg ~44x and monkey NOAEL 300 mg/kg ~150x human AUC

Qalsody

tofersen · SOD1 (ASO)
Monkey 9-month IT NOAEL 12 mg (HED 120 mg) ~1.2x the 100 mg human dose by CSF-volume scaling

Qfitlia

fitusiran · Antithrombin / SERPINC1 (siRNA)
Monkey 39-week top dose 0.5 mg/kg/week (tolerated) is below the MRHD on a BSA dose basis

Redemplo

plozasiran · APOC3 (siRNA)
Monkey NOAEL 180 mg/kg Q4W (highest dose): 140-fold MRHD by BSA

Rivfloza

nedosiran · LDHA (siRNA)
Juvenile monkey NOAEL 100 mg/kg: AUC ~29-fold human exposure

Rytelo

imetelstat · Telomerase (oligo)
Mouse NOAEL 2.4x and monkey HNSTD 28.1x human exposure at recommended dose

Spinraza

nusinersen · SMN2 (ASO)
No margin: monkey 53-week neurotoxicity no-effect dose 0.3 mg gave CSF 12 ng/mL, within patient levels (7-35 ng/mL)

Tegsedi

inotersen · TTR (ASO)
AUC margins at NOAELs for monkey thrombocytopenia and rat kidney toxicity ≤ ~2-fold

Tryngolza

olezarsen · APOC3 (ASO)
Monkey NOAEL 6 mg/kg/wk ~6x MRHD (80 mg/month) by BSA

Vyondys 53

golodirsen · DMD exon 53 (PMO)
Juvenile rat NOAEL 100 mg/kg ~2.6x human plasma exposure at 30 mg/kg

Wainua

eplontersen · TTR (ASO)
Monkey NOAEL 134x human AUC (112x Cmax) at 45 mg

Zanvastro

zilganersen · GFAP (ASO)
Monkey NOAEL 5x, mouse 17x the proposed 50 mg dose (CSF-volume-normalized dose)

Cyfendus

anthrax vaccine adsorbed, adjuvanted · TLR9 (CpG 7909 adjuvant)
Not stated in public reviews

Defitelio

defibrotide · Fragmented DNA oligonucleotides
Not stated in public reviews

Onpattro

patisiran · TTR (siRNA)
Not stated in public reviews

Viltepso

viltolarsen · DMD exon 53 (PMO)
Not stated in public reviews

Vitravene

fomivirsen · CMV IE2 mRNA (ASO)
Not stated in public reviews

Waylivra

volanesorsen · APOC3 (ASO)
Not stated in public reviews

Summary across all 28 oligonucleotides →