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Clinical and Molecular Findings After Autologous Stem Cell Transplantation or Cyclophosphamide for Scleroderma: Handling Missing Longitudinal Data.

Publication ,  Journal Article
Keyes-Elstein, L; Pinckney, A; Goldmuntz, E; Welch, B; Franks, JM; Martyanov, V; Wood, TA; Crofford, L; Mayes, M; McSweeney, P; Nash, R ...
Published in: Arthritis Care Res (Hoboken)
February 2023

OBJECTIVE: Among individuals with systemic sclerosis (SSc) randomized to cyclophosphamide (CYC) (n = 34) or hematopoietic stem cell transplantation (HSCT) (n = 33), we examined longitudinal trends of clinical, pulmonary function, and quality of life measures while accounting for the influence of early failures on treatment comparisons. METHODS: Assuming that data were missing at random, mixed-effects regression models were used to estimate longitudinal trends for clinical measures when comparing treatment groups. Results were compared to observed means and to longitudinal trends estimated from shared parameter models, assuming that data were missing not at random. Longitudinal trends for SSc intrinsic molecular subsets defined by baseline gene expression signatures (normal-like, inflammatory, and fibroproliferative signatures) were also studied. RESULTS: Available observed means for pulmonary function tests appeared to improve over time in both arms. However, after accounting for participant loss, forced vital capacity in HSCT recipients increased by 0.77 percentage points/year but worsened by -3.70/year for CYC (P = 0.004). Similar results were found for diffusing capacity for carbon monoxide and quality of life indicators. Results for both analytic models were consistent. HSCT recipients in the inflammatory (n = 20) and fibroproliferative (n = 20) subsets had superior long-term trends compared to CYC for pulmonary and quality of life measures. HSCT was also superior for modified Rodnan skin thickness scores in the fibroproliferative subset. For the normal-like subset (n = 22), superiority of HSCT was less apparent. CONCLUSION: Longitudinal trends estimated from 2 statistical models affirm the efficacy of HSCT over CYC in severe SSc. Failure to account for early loss of participants may distort estimated clinical trends over the long term.

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Published In

Arthritis Care Res (Hoboken)

DOI

EISSN

2151-4658

Publication Date

February 2023

Volume

75

Issue

2

Start / End Page

307 / 316

Location

United States

Related Subject Headings

  • Treatment Outcome
  • Transplantation, Autologous
  • Scleroderma, Systemic
  • Scleroderma, Localized
  • Quality of Life
  • Immunosuppressive Agents
  • Humans
  • Hematopoietic Stem Cell Transplantation
  • Cyclophosphamide
  • 4201 Allied health and rehabilitation science
 

Citation

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Keyes-Elstein, L., Pinckney, A., Goldmuntz, E., Welch, B., Franks, J. M., Martyanov, V., … Sullivan, K. M. (2023). Clinical and Molecular Findings After Autologous Stem Cell Transplantation or Cyclophosphamide for Scleroderma: Handling Missing Longitudinal Data. Arthritis Care Res (Hoboken), 75(2), 307–316. https://doi.org/10.1002/acr.24785
Keyes-Elstein, Lynette, Ashley Pinckney, Ellen Goldmuntz, Beverly Welch, Jennifer M. Franks, Viktor Martyanov, Tammara A. Wood, et al. “Clinical and Molecular Findings After Autologous Stem Cell Transplantation or Cyclophosphamide for Scleroderma: Handling Missing Longitudinal Data.Arthritis Care Res (Hoboken) 75, no. 2 (February 2023): 307–16. https://doi.org/10.1002/acr.24785.
Keyes-Elstein L, Pinckney A, Goldmuntz E, Welch B, Franks JM, Martyanov V, et al. Clinical and Molecular Findings After Autologous Stem Cell Transplantation or Cyclophosphamide for Scleroderma: Handling Missing Longitudinal Data. Arthritis Care Res (Hoboken). 2023 Feb;75(2):307–16.
Keyes-Elstein, Lynette, et al. “Clinical and Molecular Findings After Autologous Stem Cell Transplantation or Cyclophosphamide for Scleroderma: Handling Missing Longitudinal Data.Arthritis Care Res (Hoboken), vol. 75, no. 2, Feb. 2023, pp. 307–16. Pubmed, doi:10.1002/acr.24785.
Keyes-Elstein L, Pinckney A, Goldmuntz E, Welch B, Franks JM, Martyanov V, Wood TA, Crofford L, Mayes M, McSweeney P, Nash R, Georges G, Csuka ME, Simms R, Furst D, Khanna D, Clair EWS, Whitfield ML, Sullivan KM. Clinical and Molecular Findings After Autologous Stem Cell Transplantation or Cyclophosphamide for Scleroderma: Handling Missing Longitudinal Data. Arthritis Care Res (Hoboken). 2023 Feb;75(2):307–316.
Journal cover image

Published In

Arthritis Care Res (Hoboken)

DOI

EISSN

2151-4658

Publication Date

February 2023

Volume

75

Issue

2

Start / End Page

307 / 316

Location

United States

Related Subject Headings

  • Treatment Outcome
  • Transplantation, Autologous
  • Scleroderma, Systemic
  • Scleroderma, Localized
  • Quality of Life
  • Immunosuppressive Agents
  • Humans
  • Hematopoietic Stem Cell Transplantation
  • Cyclophosphamide
  • 4201 Allied health and rehabilitation science