Lupus & antiphospholipid syndrome

Increased expression of TRIM69 in peripheral blood from systemic lupus erythematosus and its clinical significance

Clin Exp RheumatolPublished Diagnostic accuracy study

Authors' conclusion

The study suggested that the elevated TRIM69 may play a role in SLE pathogenesis and predictive model based on serum TRIM69 levels, HGB, and NLR act as bioindicator for forecast and progression of diseases.

Study context

Population
Patients with systemic lupus erythematosus (SLE), healthy controls and patients with rheumatoid arthritis (RA); TRIM69 mRNA in whole blood (RT-qPCR) and serum TRIM69 (ELISA)
Participants
72 / 62 / 65
Comparison
SLE vs healthy controls (HC) and RA
  • SLEn = 72
  • HCn = 62reference
  • RAn = 65reference
Outcome
Predictive model (serum TRIM69, haemoglobin (HGB), neutrophil-to-lymphocyte ratio (NLR)) distinguishing SLE from HC
Methodological detailscase-control, 5-fold cross-validation, independent validation cohort
  • Case-control
  • 5-fold cross-validation
  • Independent validation cohort

Performance

As reported in the abstract

Test or modelAUCSensitivitySpecificityOverall accuracyKappa
Training0.94193.55%81.94%— not stated in the abstract— not stated in the abstract
Cross-validation— not stated in the abstract— not stated in the abstract— not stated in the abstract86.55%0.731
Independent validation0.93187.50%87.50%— not stated in the abstract— not stated in the abstract

AUC

Training0.941
Cross-validation— not stated in the abstract
Independent validation0.931

Sensitivity

Training93.55%
Cross-validation— not stated in the abstract
Independent validation87.50%

Specificity

Training81.94%
Cross-validation— not stated in the abstract
Independent validation87.50%

Overall accuracy

Training— not stated in the abstract
Cross-validation86.55%
Independent validation— not stated in the abstract

Kappa

Training— not stated in the abstract
Cross-validation0.731
Independent validation— not stated in the abstract

— not stated in the abstract

Further findings

TRIM69 expression

Significantly elevated in SLE vs HC and RA; strongly correlated with clinical features

Serum TRIM69 alone

Showed discriminatory ability for SLE in ROC analysis

Model: SLE vs RA and HC combined

AUC
0.805
Model correlated with SLE disease activity

Original publication

Increased expression of TRIM69 in peripheral blood from systemic lupus erythematosus and its clinical significance. Clin Exp Rheumatol. Published 1 September 2025. doi:10.55563/clinexprheumatol/3pk20x

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