 This is a multicenter, non interventional, retrospective cohort study with a prospective, observational follow-up component to investigate the safety and efficacy of FCH use in subjects with congenital fibrinogen deficiency. Data will be collected on the safety and efficacy of FCH as used for the treatment of acute bleeding episodes, routine prophylaxis and perioperative bleeding in these subjects. All subjects have received FCH and may continue to receive FCH at the discretion of the treating physician Primary Investigator according to the standard of care at the participating study site. 