Table 3 Breakpoint Characteristics of CNVs.

From: Deletion of exon 4 in LAMA2 is the most frequent mutation in Chinese patients with laminin α2-related muscular dystrophy

Subject

CNV Structure

Brekpoint Coordinate (GRCh37/hg19)

Length (bp)

Breakpoint Sequence Characteristics

Preferred Mutational Mechanism

Error Near Breakpoint (chr6)

Homologous Genomic Repeats

Microhomology

Insertion

Blunt Ends

P1

DEL

[Chr6:129187644]:[Chr6:129212825]

25,181 bp

No

CA

No

No

NHEJ or MMBIR

No

P2

DEL

[Chr6:129185304]:[Chr6:129210133]

24,829 bp

No

TCTT

No

No

NHEJ or MMBIR

No

P3

DEL

[Chr6:129355433]:[Chr6:129402434]

47,001 bp

No

TAA

No

No

NHEJ or MMBIR

G > T at 129355411; C > T at 129402537

P4

DEL

[Chr6:129221788]:[Chr6:129488858]

267,070 bp

No

No

A

No

NHEJ

C > G at 129488876; T > A at 129488886

P5

DEL

[Chr6:129354701]:[Chr6:129548523]

193,822 bp

No

No

No

Yes

NHEJ

No

P6

DEL

[Chr6:129379289]:[Chr6:129454975]

75,686 bp

No

No

TCGTAAAATACACA CACACACACACTCC

No

NHEJ

A > C at 129378992

P7

DEL

[Chr6:129414981]:[Chr6:129420437]

5,465 bp

No

AACAA

No

No

NHEJ or MMBIR

No

P8

DEL

[Chr6:129414981]:[Chr6:129420437]

5,465 bp

No

AACAA

No

No

NHEJ or MMBIR

No

P9

DEL

[Chr6:129414981]:[Chr6:129420437]

5,465 bp

No

AACAA

No

No

NHEJ or MMBIR

No

P10

DEL

[Chr6:129414981]:[Chr6:129420437]

5,465 bp

No

AACAA

No

No

NHEJ or MMBIR

No

P11

DEL

[Chr6:129414981]:[Chr6:129420437]

5,465 bp

No

AACAA

No

No

NHEJ or MMBIR

No

P12

DEL

[Chr6:129414981]:[Chr6:129420437]

5,465 bp

No

AACAA

No

No

NHEJ or MMBIR

No

P13

DEL

[Chr6:129414981]:[Chr6:129420437]

5,465 bp

No

AACAA

No

No

NHEJ or MMBIR

No

P14

DEL

[Chr6:129414981]:[Chr6:129420437]

5,465 bp

No

AACAA

No

No

NHEJ or MMBIR

No

P15

DEL

[Chr6:129423549]:[Chr6:129465235]

41,686 bp

No

GAT

No

No

NHEJ or MMBIR

A inserted at 129423453–129423454

P16

DUP

[Chr6:129440069]:[Chr6:129478884]

38,815 bp

No

A

No

No

NHEJ or MMBIR

No

P17

DEL

[Chr6:129488856]:[Chr6:129544038]

55,182 bp

L1PA2:L1PA5

No

No

No

LINE-mediated rearrangement

C > T at 129544095

P18

DEL

[Chr6:129566786]:[Chr6:129578227]

11,441 bp

No

A

No

No

NHEJ or MMBIR

A > G at 129578335

P19

DEL

[Chr6:129612189]:[Chr6:129613535]

1,346 bp

No

A

No

No

NHEJ or MMBIR

A inserted at 129613597–129613598

P20

DEL

[Chr6:129658427]:[Chr6:129664812]

6,390 bp

No

AGTACA

No

No

NHEJ or MMBIR

No

P21

DEL

[Chr6:129710417–129711135]- [Chr6:129837710+]

NA

NA

NA

NA

NA

NA

NA

P22

DEL-NML-DEL

[Chr6:129746506]:[Chr6:129775772] [Chr6:129776069]:[Chr6:129779042]

29,266 bp

2,973 bp

No

GC

AC

ACCCAAAACTCCCTGTTAAACCCAAAACAGC

No

NHEJ or MMBIR

No

P23

DEL

[Chr6:129778345]:[Chr6:129782637]

4,292p

No

No

TA

No

NHEJ

No

P24

DEL

[Chr6:129778345]:[Chr6:129782637]

4,292p

No

No

TA

No

NHEJ

No

P25

DEL

[Chr6:129778271]:[Chr6:129813338]

35,067 bp

No

No

No

Yes

NHEJ

C > G at 129778200; T > C at 129813347

P26

DEL

[Chr6:129816374]:[Chr6:129833601]

17,227 bp

No

CAAA

No

No

NHEJ or MMBIR

No

P27

DEL

[Chr6:129816374]:[Chr6:129833601]

17,227 bp

No

CAAA

No

No

NHEJ or MMBIR

No

P28

DEL

[Chr6:129816374]:[Chr6:129833601]

17,227 bp

No

CAAA

No

No

NHEJ or MMBIR

No

P29

DEL

[Chr6:129833559]:[Chr6:129833615]

56 bp

  1. DEL, deletion; DUP, duplication.