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Updated: Sep 13, 2025

Targeted Next-generation Sequencing and Bioinformatics Pipeline to Evaluate Genetic Determinants of Constitutional Disease
Published on: April 4, 2018
Genetic Susceptibility in Sinusoidal Obstruction Syndrome/Veno-Occlusive Disease: A Case-Control Study
Ioulia Mavrikou1, Marta Castelli2, Tasoula Touloumenidou1
1Hematology & BMT Unit, General Hospital "George Papanikolaou", 57010 Thessaloniki, Greece.
Genetic variants in hematopoietic cell transplantation (HCT) complications like Sinusoidal Obstruction Syndrome/Veno-Occlusive Disease (SOS/VOD) were studied. Distinct genetic differences were found between SOS/VOD and transplant-associated thrombotic microangiopathy (TA-TMA), suggesting different disease pathways.
Area of Science:
- Genetics
- Hematology
- Immunology
Background:
- Sinusoidal Obstruction Syndrome/Veno-Occlusive Disease (SOS/VOD) is a serious complication following hematopoietic cell transplantation (HCT).
- Complement activation and endothelial injury are implicated in SOS/VOD pathogenesis.
- Distinguishing genetic factors between SOS/VOD and transplant-associated thrombotic microangiopathy (TA-TMA) is crucial for understanding disease mechanisms.
Purpose of the Study:
- To identify distinct pathogenic genetic variants differentiating SOS/VOD from TA-TMA in HCT recipients.
- To explore the genetic basis of SOS/VOD and TA-TMA using Next-Generation Sequencing (NGS).
Main Methods:
- Genomic DNA analysis of 30 SOS/VOD patients and 30 TA-TMA controls.
- Next-Generation Sequencing (NGS) of complement-related genes (e.g., CFH, C3) and ADAMTS13.
- Variant classification and comparison between patient groups.
Main Results:
- Twenty pathogenic variants were identified among 426 detected variants.
- SOS/VOD patients showed variants in ADAMTS13, CFH, C3, and CFB genes.
- Controls (TA-TMA) had more variants in complement genes (CFH, CFI, C3), with one variant strongly predicting ADAMTS13 activity.
Conclusions:
- Significant genetic differences exist between SOS/VOD and TA-TMA, indicating distinct pathogenic mechanisms.
- These findings may enable targeted risk assessment and therapeutic strategies for HCT recipients.
- Further research into genetic predispositions can improve HCT outcomes.
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