Factor XII-A New Therapeutic Target? A Systematic Review

Relatively higher-quality human studies compared with other topics in this database, e.g. multiple RCTs or systematic reviews. This does not mean it is standard or approved care.

• Level A · Stronger Clinical Evidence
• Level B · Emerging clinical evidence with positive signals
• Level C · Early human research exploring benefits
• Level D · Scientific groundwork from lab and animal studies
• Emerging · Emerging topic under active research

Abstract (original English)

Factor XII is a molecule of unclear physiological function that has attracted increasing research interest across multiple medical disciplines. In recent years, a substantial body of evidence has emerged regarding the contribution of factor XII to the pathogenesis of inflammatory and prothrombotic conditions. FXII has been shown to play a protective role in FXII-driven coagulation during host defence against infections and to protect against multi-organ failure in animal models of sepsis. In acute respiratory distress syndrome (ARDS), FXII activity contributes to the release of pro-inflammatory mediators and is associated with severe clinical outcomes; it also induces fibroblast migration in idiopathic pulmonary fibrosis. FXII deficiency has been associated with reduced neutrophil adhesion and migration in sterile skin wounds and immune complex-induced vasculitis. In neurological conditions, FXII deficiency significantly reduced the number and severity of multiple sclerosis relapses and decreased the volume of post-traumatic brain oedema. In heart failure pathogenesis, FXII deficiency and pharmacological inhibition of FXII activity blocked activation of the renin-angiotensin-aldosterone system (RAAS) in dilated cardiomyopathy, increased median survival, and delayed heart failure onset in murine models. Importantly, FXII inhibition prevented arterial thrombosis without affecting

Evidence level

Relatively higher-quality human studies compared with other topics in this database, e.g. multiple RCTs or systematic reviews. This does not mean it is standard or approved care.

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