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Heplisav-B: genotox, carcinogenicity and repro: done or skipped?

hepatitis B vaccine (recombinant), adjuvanted · TLR9 (CpG 1018 adjuvant)
Genotoxicity
CpG adjuvant negative in Ames, in vitro chromosome aberration and in vivo mouse micronucleus tests
“No genotoxicity was observed in the standard battery of tests composed of in vitro bacterial mutation, chromosome aberration and in vivo mouse erythrocyte micronucleus test.”
✓ VerifiedFDA toxicology review, p. 3Source ↗
Carcinogenicity
Not conducted (vaccine and adjuvant guidelines, ICH S1A; sporadic exposure)
“No studies assessing the carcinogenicity of Heplisav B or 1018 ISS adjuvant have been performed. This is acceptable for this type of product in line with EMAs guidelines for vaccines and adjuvants and compliant with ICH S1A, considering that the exposure to this vaccine will be sporadic.”
✓ VerifiedEMA assessment report, p. 31Source ↗
Reproductive & developmental
Rat multigeneration DART study: stillbirths and skeletal anomalies only secondary to maternal toxicity at 200-fold the clinical CpG 1018 dose
“In a multigeneration reprotoxicological study in rats, effects on the offspring (stillborn pups and skeletal abnormalities) occurred secondary to maternal toxicity at a dose 200-fold the proposed clinical dose of Heplisav B with respect to 1018 ISS on a body weight basis.”
✓ VerifiedEMA assessment report, p. 33Source ↗
Safety pharmacology
Dedicated rabbit and baboon escalation studies: no adverse effects up to 1.6 mg/kg (rabbit) and 25 mg (baboon) CpG 1018
“No adverse effects were identified in 2 safety-pharmacology studies with doses of 1018 ISS up to 1.6 mg/kg in rabbits and 25 mg in baboons.”
✓ VerifiedFDA toxicology review, p. 3Source ↗
Genotox: Ames
Bacterial mutation test negative up to 5 mg/plate
“In conclusion, the test article 1018 ISS did not show any evidence or genotoxicity in this in vitro test for mutagenicity when tested up to the maximum concentration of 5 mg/plate.”
✓ VerifiedFDA toxicology review, p. 6Source ↗
Genotox: in vitro mammalian
In vitro chromosome aberration test: negative
“In conclusion, the test article 1018 ISS did not show any evidence or genotoxicity in this in vitro test for induction of chromosome damage when tested up to the maximum concentration 5 mg/plate.”
✓ VerifiedFDA toxicology review, p. 7Source ↗
Genotox: in vivo
Mouse micronucleus assay: negative
“Therefore, 1018 ISS did not show any evidence of genotoxic activity and was found negative in the mouse micronucleus assay.”
✓ VerifiedFDA toxicology review, p. 9Source ↗
Carcinogenicity model
Not conducted (ICH S1A; sporadic vaccine exposure)
“No studies assessing the carcinogenicity of Heplisav B or 1018 ISS adjuvant have been performed. This is acceptable for this type of product in line with EMAs guidelines for vaccines and adjuvants and compliant with ICH S1A, considering that the exposure to this vaccine will be sporadic.”
✓ VerifiedEMA assessment report, p. 31Source ↗
Carcinogenicity timing
Not required for this type of product
“No studies assessing the carcinogenicity of Heplisav B or 1018 ISS adjuvant have been performed. This is acceptable for this type of product in line with EMAs guidelines for vaccines and adjuvants and compliant with ICH S1A, considering that the exposure to this vaccine will be sporadic.”
✓ VerifiedEMA assessment report, p. 31Source ↗
hERG / QT
Not stated in public reviews
Not reported in the public reviews. Reviewers summarise selectively, so this usually means it wasn't discussed publicly, not that it wasn't studied.

Same question, other oligonucleotides

Amondys 45

casimersen · DMD exon 45 (PMO)
Conducted; negative (Ames, CHO chromosomal aberration, mouse micronucleus)

Amvuttra

vutrisiran · TTR (siRNA)
Conducted: Ames, human lymphocyte chromosome aberration, rat micronucleus; all negative

Cyfendus

anthrax vaccine adsorbed, adjuvanted · TLR9 (CpG 7909 adjuvant)
Not conducted

Dawnzera

donidalorsen · Prekallikrein / KLKB1 (ASO)
Conducted: in vitro Ames, CHL chromosomal aberration and in vivo mouse bone marrow micronucleus; no genotoxicity

Defitelio

defibrotide · Fragmented DNA oligonucleotides
Negative: Ames assay and in vivo rat bone marrow micronucleus assay

Exondys 51

eteplirsen · DMD exon 51 (PMO)
Conducted; negative (Ames, CHO chromosomal aberration, mouse micronucleus)

Givlaari

givosiran · ALAS1 (siRNA)
Conducted: Ames, human lymphocyte chromosome aberration, rat micronucleus; all negative

Izervay

avacincaptad pegol · C5 (aptamer)
Conducted: Ames, chromosomal aberration in mammalian cells, mouse micronucleus; all negative

Kynamro

mipomersen · APOB (ASO)
Conducted; negative (Ames, mouse lymphoma, mouse micronucleus)

Leqvio

inclisiran · PCSK9 (siRNA)
Conducted: standard panel, negative

Macugen

pegaptanib · VEGF-165 (aptamer)
Conducted (GLP); pegaptanib and 2'-FU/2'-FC nucleosides negative overall

Onpattro

patisiran · TTR (siRNA)
Conducted: Ames, human lymphocyte chromosome aberration, mouse micronucleus; all negative

Oxlumo

lumasiran · HAO1 (siRNA)
Conducted: Ames, human lymphocyte chromosome aberration, rat micronucleus; all negative

Qalsody

tofersen · SOD1 (ASO)
Conducted; negative (Ames, CHL chromosomal aberration, mouse micronucleus)

Qfitlia

fitusiran · Antithrombin / SERPINC1 (siRNA)
Conducted: bacterial reverse mutation, in vitro chromosomal aberration (human lymphocytes), rat bone-marrow micronucleus; all negative

Redemplo

plozasiran · APOC3 (siRNA)
Conducted: Ames, in vitro chromosomal aberration (TK6), in vivo mouse micronucleus; not genotoxic

Rivfloza

nedosiran · LDHA (siRNA)
Conducted; negative (Ames, in vitro micronucleus, in vivo mouse micronucleus)

Rytelo

imetelstat · Telomerase (oligo)
Conducted; negative (Ames, in vitro micronucleus, in vivo mouse micronucleus)

Spinraza

nusinersen · SMN2 (ASO)
Conducted; negative (Ames, CHO chromosomal aberration, mouse micronucleus)

Tegsedi

inotersen · TTR (ASO)
Conducted; negative (Ames, CHL chromosomal aberration, mouse micronucleus)

Tryngolza

olezarsen · APOC3 (ASO)
Conducted; negative (Ames, chromosomal aberration, mouse micronucleus)

Viltepso

viltolarsen · DMD exon 53 (PMO)
Conducted; negative (Ames, CHL chromosomal aberration, mouse micronucleus)

Vitravene

fomivirsen · CMV IE2 mRNA (ASO)
Conducted: mutagenic potential evaluated in in vitro and in vivo assays

Vyondys 53

golodirsen · DMD exon 53 (PMO)
Conducted; negative (Ames, CHO chromosomal aberration, mouse micronucleus)

Wainua

eplontersen · TTR (ASO)
Conducted; negative (Ames, chromosomal aberration, mouse micronucleus)

Waylivra

volanesorsen · APOC3 (ASO)
Conducted: bacterial reverse mutation, mouse lymphoma TK, mouse bone-marrow micronucleus; all negative

Zanvastro

zilganersen · GFAP (ASO)
Conducted: Ames, in vitro chromosomal aberration, mouse micronucleus; all negative

Summary across all 28 oligonucleotides →