CHANGE-seq™

Nomination assay

CHANGE-seq and CHANGE-seq-BE are sensitive, genome-wide, high-throughput biochemical assays for off-target site nomination. In both methods, circularized genomic DNA is treated in vitro with the editor of interest, followed by selective sequencing of edited on- and off-target sites. By combining CHANGE-seq-BE and ONE-seq-BE, SeQure offers the only off-target nomination service that delivers orthogonal assays for base editors that align with the FDA’s recommendations for off-target site nomination in genome-editing therapies.

Row herosectionWave Shape Decorative svg added to top

CHANGE-seq overview

Change-seq-be-icon-chart
Change-seq-be-icon-chart-mobile1
Change-seq-be-icon-chart-mobile2

CHANGE-seq & CHANGE-seq-BE

Biochemical off-target nomination assay optimized for CRISPR-Cas and base editing applications. Designed to be paired with ONE-seq or ONE-seq-BE as an orthogonal method. CHANGE-seq and CHANGE-seq-BE enable selective sequencing of in vitro-cleaved genomic DNA.

SeQure logos_nomination-icon-text
  • Compatible with Cas9, Cas12a, ABE, CBE​​
  • Sensitive biochemical nomination assay

Off-target nomination

Early discovery - gRNA/editor selection

CTA/IND-enabling

Row seperator3 Shape Decorative svg added to bottom
SeQure logos_nomination-icon

Related nomination assays

ONE-seq

ONE-seq and ONE-seq-BE allow population-scale, variant-aware, off-target nomination. Candidate off-target enumeration, enrichment, and in vitro cutting combined with NGS enables high sensitivity detection of low frequency off-target events.

Guide-seq

Orthogonal approach to supplement ONE-seq off-target nomination. Unbiased, cell-based, off-target editing assay provides a complementary approach to supplement your off-target risk assessment efforts.

Row seperator3 Shape Decorative svg added to top

Featured resources

Poster-Screenshot-CSHL-V2
Poster
Base Editor Genomic Safety Assessment
Webpage
ONE-seq™
Variant-Aware Off-Target Nomination
A table for guides that then lists off-target score (by MIT and CFD), Activity (CRISPRater), number of loci (L. Distance, and Risk Profiler number.
Poster
Guide Profiler: A Genetic Variant-Aware Computational Tool for Improved Guide RNA Selection for CRISPR-Based Therapeutic Applications
View all resources
Row transparentWave Shape Decorative svg added to top

From early discovery through pre-clinical and clinical development

Row herosectionWave Shape Decorative svg added to top

Still have questions?

Young female scientist filling chemical through pipette while working in laboratory