A Case Presenting Massive Umbilical Hemorrhage with Previously Unrecognized Factor XIII Subunit A Mutation (Factor XIII A1 gene; NM_000129.3 c.1817_1817delA (p.H606Pfs*23) (p.His606Profs*23, homozygous)

ABSTRACT Congenital factor XIII deficiency is an autosomal recessive inheritance bleeding disorder. Usually, the cause of this disease is deficiency of factor XIII subunit A protein in plasma. Some symptoms of the disease support that the clinical suspicions related to FXIII deficiency. For example; prolonged umbilical cord bleeding which is started in the newborn period. Diagnose of Factor XIII deficiency is difficult, on the other hand it has important therapeutic implications. When cryoprecipitate or plasma-derived factor XIII concentrate is used prophylactically, the prognosis of the disease will be good. We report here a case related to factor XIII deficiency with presented a massive umbilical cord bleeding as the first manifestation of factor XIII deficiency. The patient was managed successfully with cryoprecipitate, fresh frozen plasma transfusion and supportive treatments