Table 1 Characteristics of muscle biopsy samples used in this study.

From: Clonal expansion of mtDNA deletions: different disease models assessed by digital droplet PCR in single muscle cells

Case and phenotype

Genetic defect

Age at time of biopsy

Sex

Nuclear gene mutation or mtDNA deletion breakpoints

AA change

Heteroplasmy estimation of muscle biopsy DNA

P1

(DOA plus)

OPA1 heterozygous missense

66

M

OPA1

c.1462G>A

p.G488R

56%

(Southern blot)

P2(DOA plus)

OPA1 heterozygous missense

42

M

OPA1

c.1316G>T

p.G439V

37%

(Southern blot)

P3(SANDO)

POLG heterozygous missense and insertion

53

M

POLG1

c.934T>C

c.3629insA

p.W312R and p.Y1210X

76%

(Southern blot)

P4

(SANDO, Parkinsonism)

POLG homozygous missense

57

F

POLG1

c.1943C>G

p.P648R

64%

(Southern blot)

P5(CPEO)

mtDNA single deletiona

49

M

mtDNA

nt.8469-nt.13447

NA

NA

P6

(CPEO)

mtDNA single deletiona

18

F

mtDNA

nt.8469-nt.13447

NA

74%

(Southern blot)

P7

(CPEO)

mtDNA single deletion

50

M

mtDNA

nt.9431-nt.15423

NA

NA

C1

Control 1

37

F

NA

NA

NA

C2

Control 2

20

F

NA

NA

NA

C3

Control 3

41

F

NA

NA

NA

  1. AA, amino acid; F, female; M, male; NA, not applicable.
  2. aCommon deletion.