Skip Navigation LinksHome > Published Ahead-of-Print > Von Willebrand Factor and Factor VIII Levels in Egyptian Chi...
Journal of Pediatric Hematology/Oncology:
doi: 10.1097/MPH.0000000000000219
Original Article: PDF Only

Von Willebrand Factor and Factor VIII Levels in Egyptian Children With Newly Diagnosed Acute Lymphoblastic Leukemia in Relation to Peripheral Blast Cells and Steroid Therapy.

El Sherif, Nayera H. K. MD; Narouz, Marian F. G. MSc; Elkerdany, Tahany A. MD; El Habashy, Safinaz A. MD

Published Ahead-of-Print
Collapse Box

Abstract

Background: Endothelial dysfunction has been reported in children with acute lymphoblastic leukemia (ALL). The aim of this study is to assess Von Willebrand Factor antigen (VWF antigen) and Factor VIII (FVIII) in newly diagnosed ALL patients, in relation to peripheral blast (PB) cells, steroid therapy, and any prognostic potential.

Procedure: VWF antigen and FVIII were assessed initially (D0) and at day 8 (D8) steroid therapy for 32 newly diagnosed ALL patients with and without peripheral blood blast cells.

Results: At diagnosis, patients with PBs had a significantly higher levels of VWF antigen (102.7+/-22.9% vs. 56.9+/-8%, P<0.001) and FVIII (93.4+/-15.9% vs. 6 62.6+/-18.1%, P<0.001) than those without. Following steroid therapy, both factors decreased in those with PBs, whereas an increase above baseline was observed in those without PBs. Furthermore, there was a significant positive correlation between PBs and both VWF antigen (P<0.001) and FVIII levels (P=0.002). High-risk patients were comparable with standard-risk group in mean values of VWF antigen (P=0.234) and FVIII (P=0.891) at diagnosis. After 12 months from diagnosis, all patients without PB achieved and maintained complete remission. Those with initial PB reported relapse (12.5%) or death (4.2%) during follow-up.

Conclusions: Markers of endothelial dysfunction namely VWF and FVIII were related to circulating blast cells and steroids therapy through lysis of lymphoblasts results in reduction of both factors, with risk of thrombosis during induction with marked disintegration of malignant cells.

(C) 2014 by Lippincott Williams & Wilkins.

Login

Article Tools

Share

Search for Similar Articles
You may search for similar articles that contain these same keywords or you may modify the keyword list to augment your search.

Connect With Us

Twitter
twitter.com/JPHOonline

For additional oncology content, visit LWW Oncology Journals on Facebook.