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Table 5 Overview of major MC studies in RA and SLE patients

From: Long-term persistence and effects of fetal microchimerisms on disease onset and status in a cohort of women with rheumatoid arthritis and systemic lupus erythematosus

Disease

Number of subjects/samples

Method/ Material

MC positive

Mean disease duration (years)/age of subjects (years)

History of blood transfusion

References

RA

71 RA; 49 HC

PCR/ PBMC

18% RA, 24% HC

n.r. / 33 (median)

n.r.

Yan et al. [31]

RA, JIA

25 pregnant patients:

PCR/ PBMC

 

n.r. / 33

n.r.

Yan at al. [30]

(21 with improvement of arthritis, 4 with active arthritis)

100%50%

RA

DRB1*01 MC:

PCR/PBMC

DRB1*01 MC:

n.r./ 57 (RA);

included

Rak et al. [14]

33 RA, 46 HC

RA: 30%, HC: 4%

52 (HC)

(17%, HC 13%)

DRB1*04 MC:

RA: 40%,

48 RA, 64 HC

RA: 40%, HC: 8%

RA

15 patients/19 granulomatous nodules

PCR/ tissue

13/15 patients, 14/19 nodules

22.5 / 66

included

Atkins et al. [32]

RA

QKRAA MC:

PCR/ PBMC

QKRAA MC

n.r. / 51 (RA),

n.r.

Yan et al. [29]

52 RA, 34 HC

RA: 17%, HC: 3%

42 (HC)

QRRAA MC:

QRRAA MC:

52 RA, 34 HC

RA: 40%, HC: 18%

 

RA

13 patients (synovial tissue), 10 patients (skin fibroblasts)

PCR/tissue

38%

16.4 / 55.5

n.r.

Hromadnikova et al. [34]

40%

SLE

1 patient, 44 samples, 11 female control subjects

FISH/tissue

100% abnormal tissue, 0% normal tissue; 0/11 controls

1 / 33

n.r.

Johnson et al. [33]

SLE

22 patients, 24 HC

PCR/whole blood

SLE: 50% HC: 50%

n.r. /44 (SLE), 48 (HC)

excluded

Mosca et al. [35]

SLE

49 patients (57 renal biopsies), 51 HC samples

FISH/tissue

SLE: 55% of patients, 51% of samples HC: 25% of samples

n.r. / 31 (SLE)

included (31%)

Kremer Hovinga et al. [37]

SLE

7 patients (48 organ samples), 34 HC (146 samples)

FISH/tissue

SLE: 100% (50% of samples), HC: 44%, (14% of samples)

7 /41 (SLE); 47 (HC)

excluded

Kremer Hovinga et al. [36]

  1. n.r.: not reported, FISH: fluorescent in situ hybridization. HC: healthy controls.