Table 1 On-target and off-target analyses by next generation sequencing (NGS).

From: Hemophilia A ameliorated in mice by CRISPR-based in vivo genome editing of human Factor VIII

On-Target/ Off-Target

gRNA motif

(mismatches in bold font)

PAM (NNGRRT)

Chromosome Position

Strand

Gene

Site position

Indel %

Vehicle (n = 3)

AAVs (n = 5)

On-target

GTTAGAAATACTTGCAAAGCC

TAGAAT

Chr5:90474937–90474963

+

Alb

intronic

0

9.38 ± 0.90

Off-target

GTTTGAAATACTTTTAAAGCC

GTGAGT

Chr5:3757359-3757385

−

Ankib1

intronic

0

0

Off-target

TTTAGAAATACTTAAAAAGCC

AAGAGT

Chr8:77780734-77780759

+

NA

intergenic

0

0.58 ± 0.58

Off-target

GATAGAAACACTTGCAAA-CC

ATGAAT

Chr8:127199445-127199470

−

Pard3

intronic

0

1.84 ± 0.76

Off-target

GTTAAGA-CACTTGCAAAGCC

AAGGAT

Chr11:54929261-54929286

+

Tnip1

intronic

0

0

Off-target

GTTAGAAATACCTGCAAAGC-

TAAGGT

Chr12:7607521-7607546

+

NA

intergenic

0

0

Off-target

GTTAAAAACACTTGCAGAAGCC

CTGGGT

Chr12:111780123-111780150

−

Klc1

intronic

0

0

Off-target

TTTAGAAATACTAGC-AAGCC

TGGGAT

Chr19:28248970-28248995

−

NA

intergenic

0

0

Off-target

GTTAGAAATTCTTGGAATGCC

TAGGGT

ChrX:15412386-15412412

+

NA

intergenic

0

0

  1. F8KO mice were injected without (Vehicle, n = 3) or with AAV8-SaCas9-sg1 plus AAV8-BDD-F8 viruses, at a 1:5 ratio and a total AAV dose of 6 × 1011 vg/kg (n = 5). After 3 months, mice were euthanized and their liver DNA was purified for an NGS study. On-target at the Alb locus and 8 potential off-target sites with up to 3 mismatches, 1 bp-insertion or deletion, as predicted by the COSMID online program (http://crispr.bme.gatech.edu), were evaluated. NA, no gene available at this locus.