Novel variants require established frameworks: emphasizing the role of ISTH diagnostic and classification guidelines in congenital fibrinogen disorders.

This commentary aims to highlight the importance of applying the diagnostic and classification guidelines of the International Society on Thrombosis and Haemostasis (ISTH), along with standardized bleeding assessment tools, in the evaluation of patients with congenital fibrinogen disorders. Additionally, it addresses key laboratory methodologies relevant to the diagnosis of these conditions. We believe that this commentary will contribute meaningfully to the ongoing discussions and promote the adoption of standardized approaches in the assessment of rare congenital fibrinogen disorders.