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Abstract Number: 854

The Ducas: Proposal for a Digital Ulcer Assessment Score in Scleroderma

Cosimo Bruni1, Tanaka Ngcozana2, Francesca Braschi3, Guya Piemonte4, Laura Benelli4, Serena Guiducci5, Silvia Bellando-Randone3, Jonathan Grotts6, Christopher Denton7, Daniel E. Furst8 and Marco Matucci-Cerinic5, 1Department of Experimental and Clinical Medicine, Division of Rheumatology, University of Florence, Firenze, Italy, 2Rheumatology Department, Lower, Royal Free hospital, London, United Kingdom, 3Department of Clinical and Experimental Medicine, Division of Rheumatology, University of Florence, Firenze, Italy, 4University of Florence, Florence, Italy, 5Department of Experimental and Clinical Medicine, Division of Rheumatology, University of Florence, Florence, Italy, 6Biostatistics, University of California Los Angeles, Los Angeles, CA, 7Division of Medicine, Centre for Rheumatology and Connective Tissue Disease, University College London, London, United Kingdom, 8Division of Rheumatology, Department of Internal Medicine, University of California Los Angeles, David Geffen School of Medicine, Los Angeles, CA

Meeting: 2016 ACR/ARHP Annual Meeting

Date of first publication: September 28, 2016

Keywords: Outcome measures, patient outcomes, systemic sclerosis and ulcers

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Session Information

Date: Sunday, November 13, 2016

Session Title: Systemic Sclerosis, Fibrosing Syndromes, and Raynaud's – Clinical Aspects and Therapeutics - Poster I

Session Type: ACR Poster Session A

Session Time: 9:00AM-11:00AM

Background/Purpose:

No objective measure is presently available to assess digital ulcer (DU) in SSc patients apart from “healed/non healed” and experience-based clinical judgment. The aim of the current study is to propose a composite DU clinical assessment score (DUCAS) and to lend it, test its face validity by correlating it with commonly used disease related patient-reported outcomes (PROs) and physician evaluation.

Methods:

SSc patients presenting at least one DU and attending the Rheumatology Wound Care Clinic of the Florence University Hospital or the London Royal Free Hospital were enrolled. Patients were assessed with HAQ-DI, Cochin scale, Visual analogic scale (VAS) for DU-related pain (DU_pain, 0-100 mm), patient VAS for global DU status (ptGDU, 0-100mm) and patient global assessment (PtGA, 0-100 mm) as PROs and physician VAS for DU status (phyGDU, 0-100mm). The DUCAS included 7 DU related variables selected by a committee of 8 SSc DU experts – they are outlined in table 1. Each variable was weighted on a clinical basis and the DUCAS score was the sum of the values for the 7 variables (max=19,5). Spearman’s correlation tests were calculated for to examine face validity. A linear regression model with forward and backward stepwise analysis was used to determine the relationship of individual variables with the primary clinical parameter, phyGDU.

Results:

44 SSc patients (9 males, mean age 54,3±15,6 years, mean disease duration 9,9±5,8 years) were enrolled in the study. Mean phyGDU was 44,3±23mm, mean ptGDU was 54±30mm (Wilcoxon p=0.022, phyGDU VAS vs ptGDU) and mean DUCAS score was 4,2±2. Overall DUCAS showed significant positive correlations with all PROs, but when all the individual clinician and patient’s variables were modelled, only the overall DUCAS significantly predicted PhyGDU; after backwards stepwise analysis overall DUCAS and ptGDU best predicted PhyGDU, with an adjusted R²=0,437 and AIC=380,3 (Table 2).

Conclusion:

DUCAS is a newly proposed clinical score for SSc related DU which has face validity and which may reflect DU statusas judged by SSc experts. Further validation of this score will be undertaken.


Disclosure: C. Bruni, None; T. Ngcozana, None; F. Braschi, None; G. Piemonte, None; L. Benelli, None; S. Guiducci, None; S. Bellando-Randone, None; J. Grotts, None; C. Denton, GSK, Celgene, Actelion, Bayer, Sanofi, Roche-Genentech, Inventiva, 5,CSL Behring, GSK, Actelion, Roche-Genentech, Inventiva, 2; D. E. Furst, None; M. Matucci-Cerinic, None.

To cite this abstract in AMA style:

Bruni C, Ngcozana T, Braschi F, Piemonte G, Benelli L, Guiducci S, Bellando-Randone S, Grotts J, Denton C, Furst DE, Matucci-Cerinic M. The Ducas: Proposal for a Digital Ulcer Assessment Score in Scleroderma [abstract]. Arthritis Rheumatol. 2016; 68 (suppl 10). https://acrabstracts.org/abstract/the-ducas-proposal-for-a-digital-ulcer-assessment-score-in-scleroderma/. Accessed February 2, 2023.
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