Hepatic Sinusoidal Obstruction Syndrome/Veno-Occlusive Disease (SOS/VOD) Primary Prophylaxis in Patients Undergoing Hematopoietic Stem Cell Transplantation: A Network Meta-Analysis of Randomized Controlled Trials
Sousa-Pimenta M, Martins Â, Estevinho LM, Pinho Vaz C, Leite L, Mariz J (2024) · Journal of Clinical Medicine · n=0
Study Profile
- Design
- first network meta-analysis comparing primary prophylactic strategies against SOS/VOD in HSCT recipients (pairwise and consistent network structure)
- Sample size (n)
- 0
- Intervention
- Ursodeoxycholic acid (UDCA), defibrotide, fresh frozen plasma, heparin, and other prophylactic agents against SOS/VOD
- Comparator
- Placebo or no prophylaxis (and pairwise between active agents)
- Primary endpoint
- Incidence of SOS/VOD with primary prophylaxis vs no prophylaxis or alternative
- Primary result
- UDCA OR 0.38 (95% CI 0.14-1.06, SUCRA 0.720) - lower SOS/VOD incidence in all HSCT recipients; defibrotide OR 0.64 (95% CI 0.23-1.67, SUCRA 0.486); in allotransplantation subgroup defibrotide OR 0.51 (SUCRA 0.650) similar to UDCA
- Follow-up duration
- 100 days post-HSCT
- PMID
- 39598060
Key Findings
- First network meta-analysis of SOS/VOD prophylaxis strategies
- UDCA emerges as most consistently effective prophylactic agent
- Defibrotide competitive in allotransplant subgroup (SUCRA 0.650)
- Pairwise comparisons supplemented with consistent network structure
- Demonstrates utility of network meta-analysis for orphan complications
Limitations
- Limited number of RCTs to include
- Heterogeneous patient populations across trials
- Variable SOS/VOD diagnostic criteria
- Network inconsistency possible
- Not applicable to whole-leech hirudotherapy
Clinical Implications
Sousa-Pimenta 2024 introduces network meta-analytic synthesis to the SOS/VOD prophylaxis evidence base. For ASH, this work demonstrates how methodologically advanced syntheses can rank competing pharmacologic strategies, distinct from the K040187 device-leech US clinical practice where comparative effectiveness research uses simpler study designs.
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