Lupus & antiphospholipid syndrome

The role of peritubular capillaritis in severity of lupus nephritis

LupusPublished Retrospective cross-sectional study

Authors' conclusion

The findings of this study suggest that ptc is a frequently observed pathological feature in patients with lupus nephritis. Furthermore, the severity of ptc appears to be positively associated with elevated serum creatinine levels, and higher ptc scores are more commonly detected in cases with a high activity index.

Study context

Population
Patients with LN whose renal biopsy specimens were re-evaluated45 (78.9%) female
Participants
57 patients
Outcome
Frequency of peritubular capillaritis (ptc) and its relationship with active and chronic lesions in LN
Methodological detailsbiopsy re-evaluation, Banff classification ptc scoring
  • Biopsy re-evaluation
  • Banff classification ptc scoring

Main finding

As reported in the abstract

Ptc identified

45

78.9%

Ptc score 1

20

35.08%

Ptc score 2

20

35.08%

Ptc score 3

5

8.7%

Observational data: associations, not effects.

Further findings

Creatinine >1.20 mg/dL vs Normal creatinine

Severe ptc (scores 2 or 3) by serum creatinine

P < 0.001

Class 4 vs Class 3

Severe ptc by LN class

P = 0.005

Activity index ≥6 vs Activity index <6

High ptc scores by activity index

P = 0.032

Chronicity index and ptc

No significant correlation

Original publication

The role of peritubular capillaritis in severity of lupus nephritis. Lupus. Published 14 April 2025. doi:10.1177/09612033251335821

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