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Izervay: genotox, carcinogenicity and repro: done or skipped?

avacincaptad pegol · C5 (aptamer)
Genotoxicity
Conducted: Ames, chromosomal aberration in mammalian cells, mouse micronucleus; all negative
“Avacincaptad pegol was negative for genotoxicity based on a standard battery of studies including the bacterial reverse mutation assay, chromosomal aberration in mammalian cells and in vivo mouse bone marrow micronucleus assays.”
✓ VerifiedFDA pharmacology/toxicology review, p. 8Source ↗
Carcinogenicity
Not conducted (waiver accepted; low systemic exposure, C5-inhibitor class experience)
“Carcinogenicity No studies were conducted. The Applicant submitted a justification to support a waiver request not to conduct the carcinogenicity studies”
✓ VerifiedFDA pharmacology/toxicology review, p. 69Source ↗
Instead of carcinogenicity
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.
Instead of genotoxicity
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.
DRG histopathology
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.
Reproductive & developmental
EFD studies in rat and rabbit (IV, NOAEL 1.2 mg/kg/day); FEED and PPND waived
“In the embryofetal development (EFD) toxicity studies in rats and rabbits, there was no avacincaptad pegol-related adverse effects on any measured maternal or fetal parameter at doses up to 1.2 mg/kg/day (NOAEL).”
✓ VerifiedFDA pharmacology/toxicology review, p. 8Source ↗
Safety pharmacology
Dedicated: hERG assay, rat CNS study, monkey telemetry CV/respiratory (NOAEL 100 mg/kg IV); transient APTT prolongation
“The NOAEL for cardiovascular and respiratory findings in this study was the high dose, 100 mg/kg.”
✓ VerifiedFDA pharmacology/toxicology review, p. 35Source ↗
Genotox: Ames
Negative
“Avacincaptad pegol was negative for genotoxicity based on a standard battery of studies including the bacterial reverse mutation assay, chromosomal aberration in mammalian cells and in vivo mouse bone marrow micronucleus assays.”
✓ VerifiedFDA pharmacology/toxicology review, p. 8Source ↗
Genotox: in vitro mammalian
Chromosomal aberration in mammalian cells: negative
“Avacincaptad pegol was negative for genotoxicity based on a standard battery of studies including the bacterial reverse mutation assay, chromosomal aberration in mammalian cells and in vivo mouse bone marrow micronucleus assays.”
✓ VerifiedFDA pharmacology/toxicology review, p. 8Source ↗
Genotox: in vivo
Mouse bone marrow micronucleus: negative
“Avacincaptad pegol was negative for genotoxicity based on a standard battery of studies including the bacterial reverse mutation assay, chromosomal aberration in mammalian cells and in vivo mouse bone marrow micronucleus assays.”
✓ VerifiedFDA pharmacology/toxicology review, p. 8Source ↗
Carcinogenicity model
Not conducted: waiver based on mechanism of action, route, literature, class effects and existing data
“The Applicant justification to omit the conduct of nonclinical carcinogenicity studies is based on avacincaptad pegol mechanism of action, route of administration, a supportive literature review, an analysis of pharmacological class effects, and nonclinical and clinical data collected to date.”
✓ VerifiedFDA pharmacology/toxicology review, p. 69Source ↗
Carcinogenicity timing
Not required: carcinogenicity waiver accepted on weight of evidence
“The Applicant submitted a justification not to conduct carcinogenicity, fertility/early embryonic development, and pre-/postnatal development studies. The Pharmacology/Toxicology team concluded that the weight of evidence supports that the studies are not necessary for the intended dosing regimen and indication.”
✓ VerifiedFDA pharmacology/toxicology review, p. 8Source ↗
hERG / QT
Negative: hERG IC50 >100 µM; minimal QTc risk
“The IC50 was not determined but considered to be > 100 μM, supporting minimal risk for QTc prolongation.”
✓ VerifiedFDA pharmacology/toxicology review, p. 33Source ↗

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

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

Hibsago

bepirovirsen · HBV RNA (ASO)
Conducted; negative (Ames, mammalian cell chromosomal aberration, in vivo mouse micronucleus)

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 27 oligonucleotides →