Primary Graft Dysfunction: Factor V's Value for Its Early Diagnosis

Area of Science:

• Transplantation immunology
• Biomarker discovery
• Postoperative complication management

Background:

• Primary graft dysfunction (PGD) is a common transplant complication with no consensus on diagnostic criteria.
• Current diagnostic methods rely on Olthoff criteria, assessed over the first 7 postoperative days, leading to late detection.
• There is a critical need for early diagnostic markers to improve PGD management.

Purpose of the Study:

• To investigate the potential of Factor V (FV) as an early predictive marker for PGD.
• To assess the diagnostic value of FV and maximum glutamic pyruvic transaminase (GPT) within the first 3 postoperative days.
• To establish optimal threshold values for these markers using receiver operating characteristic (ROC) curves and the Youden index.

Main Methods:

• A retrospective analysis of 27 patients with graft loss within 90 days against 54 controls.
• Evaluation of FV and GPT levels on postoperative days 1-3 using ROC curve analysis.
• Determination of the best cutoff values for FV and GPT based on the Youden index to predict allograft failure.

Main Results:

• Factor V (FV) on postoperative day 2 demonstrated strong predictive value (AUC = 0.893) for graft loss.
• A FV cutoff of 37.50 predicted allograft failure with 92% specificity and 69% sensitivity.
• Combining FV < 37.50 and GPT > 1539 achieved 98% specificity and 55% sensitivity for predicting graft loss.

Conclusions:

• Factor V (FV) can serve as a highly specific early marker for primary graft dysfunction.
• The combination of FV and GPT enhances the specificity for predicting early graft loss, warranting further investigation.
• These findings suggest a potential for improved early detection and management of PGD.