Protein C and procollagen III peptide levels in patients with hepatic dysfunction after allogeneic hematopoietic stem cell transplantation
M Pihusch1, H Wegner, P Goehring
1Abteilung fuer Haematologie und Internistische Onkologie, Klinikum der Universitaet Regensburg, Regensburg, Germany. Markus.Pihusch@t-online.de
Insights
Protein C (PC) and procollagen III peptide (PNPIII) levels are associated with VOD after HSCT. While PC drops and PNPIII rises in VOD, they have limited diagnostic value for differentiating complications.
Area of Science:
- Hematology
- Transplantation Medicine
- Clinical Diagnostics
Background:
- Veno-occlusive disease (VOD) is a severe complication of hematopoietic stem cell transplantation (HSCT), leading to high mortality.
- Protein C (PC) and procollagen III peptide (PNPIII) have been investigated as potential biomarkers for VOD.
- Early and accurate diagnosis of VOD is crucial for patient management and improving outcomes.
Purpose of the Study:
- To evaluate the clinical significance of PC and PNPIII levels in patients undergoing allogeneic HSCT.
- To determine if PC and PNPIII can serve as reliable diagnostic markers for VOD.
- To assess the correlation of PC and PNPIII levels with VOD severity and other transplantation-related complications.
Main Methods:
- A prospective trial involving 350 patients undergoing allogeneic HSCT.
- Analysis of PC and PNPIII levels before conditioning and weekly for 8 weeks post-HSCT.
- Weekly monitoring of VOD, graft-versus-host disease (GVHD), toxicity, and other complications.
Main Results:
- Patients with VOD showed significantly lower PC levels (70.3% vs 96.3%, P<0.001) and higher PNPIII levels (mean 6.3 IU/ml).
- PC levels dropped with increasing severity of acute GVHD (aGVHD) and increased with steroid treatment.
- Elevated PNPIII levels were observed in patients with aGVHD, particularly hepatic aGVHD.
- PC levels during conditioning did not predict VOD.
- PC and PNPIII showed limited utility in differentiating VOD from other causes of jaundice.
Conclusions:
- PC and PNPIII levels fluctuate with VOD and GVHD following HSCT.
- While potentially involved in VOD pathogenesis, PC and PNPIII have limited diagnostic and differential diagnostic value for VOD, especially in differentiating from jaundice.
- Further research is needed to identify more specific biomarkers for VOD diagnosis and management.
Abstract:
Veno-occlusive disease (VOD) is one of the most serious complications following hematopoietic stem cell transplantation (HSCT) and is associated with a high mortality. We conducted a large trial on the clinical significance of protein C (PC) and procollagen III peptide (PNPIII) levels, which have been described as possible diagnostic markers of VOD. In total, 350 patients undergoing allogeneic HSCT were included. PC and PNPIII levels were analyzed prior to conditioning and weekly until 8 weeks after the HSCT. Signs of VOD and other transplantation-related complications (graft-versus-host disease (GVHD), toxicity, microangiopathic hemolytic anemia, infection) were recorded weekly throughout the trial. Patients showed a significant drop of the PC levels in VOD (70.3 vs 96.3%, P<0.001) and with increasing severity of aGVHD. Steroids increased the PC levels (69.4% vs 109.4%, P<0.001). The highest PNPIII levels were registered in patients with VOD (mean 6.3 IU/ml). Patients with aGVHD showed an elevation of PNPIII, especially patients with hepatic aGVHD. PC levels during conditioning do not predict VOD (98.5 vs 76.5%, NS). Although PC and PNPIII may play a role in the pathogenesis of VOD they cannot discriminate between complications with jaundice and are only of limited help in the differential diagnosis of VOD.
