The proteome pattern cGvHD_MS14 allows early and accurate prediction of chronic GvHD after allogeneic stem cell...

Area of Science:

• Biochemistry
• Immunology
• Oncology

Background:

• Allogeneic hematopoietic stem cell transplantation (allo-HSCT) is a curative therapy but carries risks.
• Chronic graft-versus-host disease (cGvHD) significantly contributes to morbidity and mortality post-allo-HSCT.
• Current cGvHD diagnosis relies on clinical features and biopsies, often leading to delayed detection.

Purpose of the Study:

• To develop and validate a urinary proteome-pattern (cGvHD_MS14) for predicting cGvHD onset and severity.
• To establish an unbiased laboratory test for early cGvHD detection.
• To improve diagnostic accuracy and enable earlier therapeutic interventions.

Main Methods:

• Generation of a urinary cGvHD-specific proteome-pattern (cGvHD_MS14) using capillary electrophoresis-mass spectrometry.
• Prospective evaluation of cGvHD_MS14 on samples from 412 patients across four transplant centers.
• Development of a logistic regression model combining cGvHD_MS14 with clinical variables.

Main Results:

• cGvHD_MS14 demonstrated 84% sensitivity and 76% specificity for cGvHD classification.
• Combining cGvHD_MS14 with clinical variables increased sensitivity to 93%.
• cGvHD was predicted up to 55 days prior to clinical diagnosis; acute GvHD was not detected.

Conclusions:

• The cGvHD_MS14 proteome pattern enables early, sensitive, and specific prediction of cGvHD.
• This biomarker can serve as an independent diagnostic criterion, potentially facilitating earlier treatment.
• Further research into the identified peptides may elucidate cGvHD pathogenesis.