Can serum surfactant protein d or cc-chemokine ligand 18 predict outcome of interstitial lung disease in patients with early systemic sclerosis?

Mona Elhaj, Julio Charles, Claudia Pedroza, Xiaochun Liu, Xiaodong Zhou, Rosa M. Estrada-Y-Martin, Emilio B. Gonzalez, Dorothy E. Lewis, Hilda T. Draeger, Sarah Kim, Frank C. Arnett, Maureen D. Mayes, Shervin Assassi

Research output: Contribution to journalArticle

40 Scopus citations

Abstract

Objective. To examine the predictive significance of 2 pneumoproteins, surfactant protein D (SP-D) and CC-chemokine ligand 18 (CCL18), for the course of systemic sclerosis (SSc)-related interstitial lung disease. Methods. The pneumoproteins were determined in the baseline plasma samples of 266 patients with early SSc enrolled in the GENISOS observational cohort. They also were measured in 83 followup patient samples. Pulmonary function tests were obtained annually. The primary outcome was decline in forced vital capacity (FVC percentage predicted) over time. The predictive significance for longterm change in FVC was investigated by a joint analysis of longitudinal measurements (sequentially obtained FVC percentage predicted) and survival data. Results. SP-D and CCL18 levels were both higher in patients with SSc than in matched controls (p < 0.001 and p = 0.015, respectively). Baseline SP-D levels correlated with lower concomitantly obtained FVC (r = -0.27, p < 0.001), but did not predict the short-term decline in FVC at 1 year followup visit or its longterm decline rate. CCL18 showed a significant correlation with steeper short-term decline in FVC (p = 0.049), but was not a predictor of its longterm decline rate. Similarly, a composite score of SP-D and CCL18 was a significant predictor of short-term decline in FVC but did not predict its longterm decline rate. Further, the longitudinal change in these 2 pneumoproteins did not correlate with the concomitant percentage change in FVC. Conclusion. SP-D correlated with concomitantly obtained FVC, while CCL18 was a predictor of short-term decline in FVC. However, neither SP-D nor CCL18 was a longterm predictor of FVC course in patients with early SSc.

Original languageEnglish (US)
Pages (from-to)1114-1120
Number of pages7
JournalJournal of Rheumatology
Volume40
Issue number7
DOIs
StatePublished - Jul 1 2013
Externally publishedYes

Keywords

  • Cc-Chemokine Ligand 18
  • Interstitial Lung Disease
  • Surfactant D
  • Systemic Sclerosis

ASJC Scopus subject areas

  • Rheumatology
  • Immunology and Allergy
  • Immunology

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  • Cite this

    Elhaj, M., Charles, J., Pedroza, C., Liu, X., Zhou, X., Estrada-Y-Martin, R. M., Gonzalez, E. B., Lewis, D. E., Draeger, H. T., Kim, S., Arnett, F. C., Mayes, M. D., & Assassi, S. (2013). Can serum surfactant protein d or cc-chemokine ligand 18 predict outcome of interstitial lung disease in patients with early systemic sclerosis? Journal of Rheumatology, 40(7), 1114-1120. https://doi.org/10.3899/jrheum.120997