World’s First Human Implant of a 3D-Printed Cornea Restores Sight
December 15, 2025
Background
Factor XIII (FXIII) deficiency, also known as fibrin-stabilizing factor deficiency, is a rare and inherited bleeding disorder characterized by inadequate or deficient levels of Factor XIII in the blood. Factor XIII is a crucial clotting factor that plays an important role in stabilizing blood clots by cross-linking fibrin molecules, which are the building blocks of a stable clot. Cross-linking strengthens the clot’s structure and prevents premature degradation, ensuring proper wound healing and protection against excessive bleeding.
The disorder is caused by mutations in the F13A1 or F13B genes, which encode the A and B subunits of Factor XIII, respectively. Factor XIII deficiency is classified into two main types: congenital (inherited) and acquired. The congenital form is typically diagnosed in childhood and is passed down through families in an autosomal recessive pattern. Acquired Factor XIII deficiency may occur due to various factors, such as liver disease, certain medications, or autoimmune disorders.Â
Individuals with Factor XIII deficiency are prone to spontaneous and delayed bleeding after injuries or surgical procedures. Common symptoms include prolonged bleeding from wounds, easy bruising, bleeding into joints and muscles, and excessive bleeding during menstruation. Severe bleeding can be life-threatening and may lead to serious complications. The diagnosis is confirmed through specific laboratory tests that assess the activity levels of Factor XIII in the blood. Treatment often involves replacement therapy with purified Factor XIII concentrates to prevent bleeding episodes and promote clot stability. Â
Epidemiology
Factor XIII deficiency is an infrequent bleeding disorder that can be either inherited or acquired. Â
Inherited Factor XIII Deficiency:Â
Acquired Factor XIII Deficiency:Â
Anatomy
Pathophysiology
Factor XIII deficiency is an infrequent bleeding disorder characterized by a deficiency or dysfunction of Factor XIII, also known as a fibrin-stabilizing factor. Factor XIII is a critical component of the coagulation cascade, which is responsible for the formation and stabilization of blood clots. The pathophysiology of Factor XIII deficiency revolves around the impaired cross-linking of fibrin molecules, leading to weak and unstable blood clots.Â
When there is a vascular injury or tissue damage, the initial stages of the coagulation cascade are activated, resulting in the formation of a fibrin clot. Fibrinogen, a soluble plasma protein, is converted into fibrin through thrombin. Fibrin molecules then form a loose network, which acts as the initial scaffold for the clot. However, this initial fibrin clot is fragile and easily degraded, making it insufficient to stop bleeding effectively.Â
Factor XIII plays a key role in the next step of the coagulation process. It acts as a transglutaminase enzyme, catalyzing the formation of covalent bonds between adjoining fibrin molecules. This cross-linking process, or fibrin polymerization, strengthens the fibrin network, transforming the fragile fibrin clot into a stable and durable structure.Â
In individuals with Factor XIII deficiency, this cross-linking process is impaired due to either insufficient levels or dysfunctional forms of Factor XIII. As a result, the fibrin clot remains weak and unstable, making it more susceptible to premature degradation. This leads to prolonged bleeding and delayed wound healing in affected individuals. Factor XIII deficiency can manifest as mild, moderate, or severe depending on the level of functional Factor XIII present.Â
Factor XIII deficiency can be inherited in an autosomal recessive pattern caused by the mutations in the F13A1 or F13B genes, which encode the A and B subunits of Factor XIII, respectively. It can also be acquired in rare cases due to conditions that interfere with Factor XIII production or function, such as liver disease or autoimmune disorders.Â
Etiology
Factor XIII deficiency, or fibrin-stabilizing factor deficiency, can have both congenital and acquired etiologies. Â
Congenital Factor XIII Deficiency: Congenital Factor XIII deficiency is the most common form inherited in an autosomal recessive pattern, meaning both parents should have to carry a mutated gene for the disorder to be passed on to their child. The condition is caused by mutations in the genes that encode the A and B subunits of Factor XIII, known as F13A1 and F13B, respectively. These genetic mutations lead to reduced or dysfunctional Factor XIII activity, resulting in the deficiency of this critical clotting factor in the affected individual’s blood. The severity of the deficiency can vary depending on the specific mutations and the residual activity of Factor XIII.Â
Acquired Factor XIII Deficiency: Acquired Factor XIII deficiency is much rarer than the congenital form and occurs due to factors that interfere with the production or function of Factor XIII. Some of the potential causes of acquired Factor XIII deficiency include:Â
Genetics
Prognostic Factors
The prognosis of Factor XIII deficiency, a rare bleeding disorder, can vary depending on several factors. Proper management and timely treatment significantly influence the outlook of affected individuals. Â
Clinical History
Age Group:
Factor XIII deficiency can present at any age, but the age of presentation might vary based on severity of the deficiency. In severe cases, symptoms may become evident in the neonatal period, with umbilical cord bleeding or intracranial hemorrhage being potential complications. In moderate or milder cases, symptoms may not manifest until later in childhood or adolescence, as individuals become more active and experience injuries or surgeries.Â
Physical Examination
The physical examination of a person suspected to have Factor XIII deficiency is essential in the diagnostic process. An in-depth examination and a detailed medical history can provide valuable clues to support or rule out the diagnosis of this rare bleeding disorder. Â
Age group
Associated comorbidity
There may not be specific associated comorbidities linked to Factor XIII deficiency, as it is primarily an inherited genetic disorder. However, certain conditions or activities that increase the risk of injury can exacerbate bleeding complications.
For example, individuals who engage in contact sports, have a history of trauma or participate in activities with a higher risk of bleeding may experience more frequent bleeding episodes. Additionally, individuals with other coagulation disorders or liver disease may have increased bleeding tendencies if they also have Factor XIII deficiency.Â
Associated activity
Acuity of presentation
The acuity of presentation in Factor XIII deficiency can vary. In severe cases, the deficiency may present life-threatening bleeding episodes, such as intracranial hemorrhage or spontaneous bleeding into muscles or joints. These severe bleeding events often prompt immediate medical attention and investigation.
In milder cases, the initial presentation may involve less severe bleeding episodes, such as prolonged bleeding from cuts, delayed wound healing, or excessive bruising. In some cases, the diagnosis of Factor XIII deficiency may not be made until later in life if mild bleeding symptoms are attributed to other factors initially.Â
Differential Diagnoses
The diagnosis of Factor XIII deficiency requires a comprehensive evaluation, as its symptoms can overlap with those of other bleeding disorders. Â
Laboratory Studies
Imaging Studies
Procedures
Histologic Findings
Staging
Treatment Paradigm
Factor XIII deficiency’s treatment paradigm revolves around replacing the deficient or dysfunctional Factor XIII. The mainstay of treatment is the infusion of purified Factor XIII concentrates derived from human plasma or produced recombinantly. These concentrates contain both the A and B subunits of Factor XIII and can effectively replace the missing or insufficient clotting factor.
The dosing and frequency of Factor XIII infusions depend on the individual’s severity of deficiency and bleeding tendencies. Prophylactic treatment with regular infusions may be recommended for individuals with severe deficiencies or frequent bleeding episodes. In contrast, those with milder deficiencies may receive on-demand treatment when bleeding occurs. Additionally, patients should be educated about recognizing early signs of bleeding and have access to treatment facilities for prompt management.Â
In cases where Factor XIII concentrates are unavailable or unsuitable, fresh frozen plasma (FFP) can be used as an alternative treatment option. However, FFP may not provide consistent and predictable Factor XIII levels, and the volume required for effective treatment can be substantial. Genetic counseling is also an essential component of the treatment paradigm for Factor XIII deficiency, especially in the congenital form, to educate affected individuals and their families about the genetic inheritance pattern and potential risks for future generations.
With appropriate and timely treatment, individuals with Factor XIII deficiency can effectively prevent bleeding episodes, minimize complications, and lead a relatively everyday life. Regular follow-up and monitoring by a hematologist or a healthcare professional specialized in bleeding disorders are essential to ensure optimal treatment outcomes and address any emerging issues promptly.Â
by Stage
by Modality
Chemotherapy
Radiation Therapy
Surgical Interventions
Hormone Therapy
Immunotherapy
Hyperthermia
Photodynamic Therapy
Stem Cell Transplant
Targeted Therapy
Palliative Care
use-of-the-non-pharmacological-therapy-for-modifying-the-environment
Modifying the environment plays an essential role in managing individuals with Factor XIII deficiency, particularly in preventing injuries and bleeding episodes. Â
Use of Recombinant factor XIII A subunit for treating Factor XIII Deficiency
Recombinant Factor XIII A subunit (rFXIII-A) is a synthetic form of the missing factor XIII, and it is used as a replacement therapy for patients with Factor XIII Deficiency. It helps to restore the missing clotting factor and improve the stability of blood clots, reducing the risk of bleeding episodes.Â
Use of Plasma-derived factor XIII concentrate for treating Factor XIII Deficiency
Plasma-derived Factor XIII concentrate is another treatment option for patients with Factor XIII Deficiency. Like Recombinant Factor XIII A subunit (rFXIII-A), plasma-derived Factor XIII concentrate is used to replace the missing or deficient Factor XIII in individuals with this bleeding disorder.Â
Use of FFP (solvent/detergent [S/D] for treating Factor XIII Deficiency
Treating Factor XIII Deficiency with Fresh Frozen Plasma (FFP) that has undergone solvent/detergent (S/D) treatment is another option available.
However, it’s important to note that S/D treatment is primarily used to inactivate enveloped viruses in plasma-derived products, and it is not specifically indicated for Factor XIII Deficiency.Â
Use of Cryoprecipitate for treating Factor XIII Deficiency
Treating Factor XIII Deficiency with Cryoprecipitate is another option. Â
Use of aminocaproic acid for treating Factor XIII Deficiency
Aminocaproic acid is a drug used to treat or prevent excessive bleeding in various medical conditions, including Factor XIII deficiency, also known as fibrin-stabilizing factor deficiency or FXIII deficiency. Factor XIII is an essential clotting factor that plays a crucial role in stabilizing blood clots by cross-linking fibrin strands.Â
For individuals with Factor XIII deficiency, their blood clots are less stable and more prone to breaking down, leading to prolonged bleeding episodes. Aminocaproic acid can help address this issue by promoting clot stability and reducing bleeding. Â
Use of Tranexamic acid injection for treating Factor XIII Deficiency
Tranexamic acid is another medication commonly used to treat bleeding disorders, including Factor XIII deficiency. It is an antifibrinolytic agent that helps to prevent the breakdown of blood clots, thereby reducing excessive bleeding. While it is not a replacement for Factor XIII itself, it can be used as a supportive therapy to manage bleeding episodes in individuals with Factor XIII deficiency. Â
use-of-intervention-with-a-procedure-in-treating-factor-xiii-deficiency
The primary treatment intervention with a procedure for Factor XIII deficiency is the intravenous infusion of purified Factor XIII concentrates.
This procedure involves administering concentrated Factor XIII derived from human plasma or produced recombinantly directly into the patient’s bloodstream. The Factor XIII concentrates contain both the A and B subunits of the clotting factor and serve to replace the deficient or dysfunctional Factor XIII.Â
The frequency and dosage of Factor XIII concentrate infusions depend on the severity of the deficiency, the individual’s bleeding history, and the healthcare provider’s treatment plan.
In some cases, individuals with severe Factor XIII deficiency may require prophylactic treatment with regular infusions to prevent bleeding episodes. In contrast, those with milder deficiencies may receive treatment on-demand when bleeding occurs.Â
Other procedures may be necessary if an individual with Factor XIII deficiency experiences significant bleeding episodes or complications.
use-of-phases-in-managing-factor-xiii-deficiency
The treatment phase of management for Factor XIII deficiency can be divided into three main phases: acute management, prophylactic treatment, and supportive care. Â
Medication
Future Trends
Factor XIII (FXIII) deficiency, also known as fibrin-stabilizing factor deficiency, is a rare and inherited bleeding disorder characterized by inadequate or deficient levels of Factor XIII in the blood. Factor XIII is a crucial clotting factor that plays an important role in stabilizing blood clots by cross-linking fibrin molecules, which are the building blocks of a stable clot. Cross-linking strengthens the clot’s structure and prevents premature degradation, ensuring proper wound healing and protection against excessive bleeding.
The disorder is caused by mutations in the F13A1 or F13B genes, which encode the A and B subunits of Factor XIII, respectively. Factor XIII deficiency is classified into two main types: congenital (inherited) and acquired. The congenital form is typically diagnosed in childhood and is passed down through families in an autosomal recessive pattern. Acquired Factor XIII deficiency may occur due to various factors, such as liver disease, certain medications, or autoimmune disorders.Â
Individuals with Factor XIII deficiency are prone to spontaneous and delayed bleeding after injuries or surgical procedures. Common symptoms include prolonged bleeding from wounds, easy bruising, bleeding into joints and muscles, and excessive bleeding during menstruation. Severe bleeding can be life-threatening and may lead to serious complications. The diagnosis is confirmed through specific laboratory tests that assess the activity levels of Factor XIII in the blood. Treatment often involves replacement therapy with purified Factor XIII concentrates to prevent bleeding episodes and promote clot stability. Â
Factor XIII deficiency is an infrequent bleeding disorder that can be either inherited or acquired. Â
Inherited Factor XIII Deficiency:Â
Acquired Factor XIII Deficiency:Â
Factor XIII deficiency is an infrequent bleeding disorder characterized by a deficiency or dysfunction of Factor XIII, also known as a fibrin-stabilizing factor. Factor XIII is a critical component of the coagulation cascade, which is responsible for the formation and stabilization of blood clots. The pathophysiology of Factor XIII deficiency revolves around the impaired cross-linking of fibrin molecules, leading to weak and unstable blood clots.Â
When there is a vascular injury or tissue damage, the initial stages of the coagulation cascade are activated, resulting in the formation of a fibrin clot. Fibrinogen, a soluble plasma protein, is converted into fibrin through thrombin. Fibrin molecules then form a loose network, which acts as the initial scaffold for the clot. However, this initial fibrin clot is fragile and easily degraded, making it insufficient to stop bleeding effectively.Â
Factor XIII plays a key role in the next step of the coagulation process. It acts as a transglutaminase enzyme, catalyzing the formation of covalent bonds between adjoining fibrin molecules. This cross-linking process, or fibrin polymerization, strengthens the fibrin network, transforming the fragile fibrin clot into a stable and durable structure.Â
In individuals with Factor XIII deficiency, this cross-linking process is impaired due to either insufficient levels or dysfunctional forms of Factor XIII. As a result, the fibrin clot remains weak and unstable, making it more susceptible to premature degradation. This leads to prolonged bleeding and delayed wound healing in affected individuals. Factor XIII deficiency can manifest as mild, moderate, or severe depending on the level of functional Factor XIII present.Â
Factor XIII deficiency can be inherited in an autosomal recessive pattern caused by the mutations in the F13A1 or F13B genes, which encode the A and B subunits of Factor XIII, respectively. It can also be acquired in rare cases due to conditions that interfere with Factor XIII production or function, such as liver disease or autoimmune disorders.Â
Factor XIII deficiency, or fibrin-stabilizing factor deficiency, can have both congenital and acquired etiologies. Â
Congenital Factor XIII Deficiency: Congenital Factor XIII deficiency is the most common form inherited in an autosomal recessive pattern, meaning both parents should have to carry a mutated gene for the disorder to be passed on to their child. The condition is caused by mutations in the genes that encode the A and B subunits of Factor XIII, known as F13A1 and F13B, respectively. These genetic mutations lead to reduced or dysfunctional Factor XIII activity, resulting in the deficiency of this critical clotting factor in the affected individual’s blood. The severity of the deficiency can vary depending on the specific mutations and the residual activity of Factor XIII.Â
Acquired Factor XIII Deficiency: Acquired Factor XIII deficiency is much rarer than the congenital form and occurs due to factors that interfere with the production or function of Factor XIII. Some of the potential causes of acquired Factor XIII deficiency include:Â
The prognosis of Factor XIII deficiency, a rare bleeding disorder, can vary depending on several factors. Proper management and timely treatment significantly influence the outlook of affected individuals. Â
Age Group:
Factor XIII deficiency can present at any age, but the age of presentation might vary based on severity of the deficiency. In severe cases, symptoms may become evident in the neonatal period, with umbilical cord bleeding or intracranial hemorrhage being potential complications. In moderate or milder cases, symptoms may not manifest until later in childhood or adolescence, as individuals become more active and experience injuries or surgeries.Â
The physical examination of a person suspected to have Factor XIII deficiency is essential in the diagnostic process. An in-depth examination and a detailed medical history can provide valuable clues to support or rule out the diagnosis of this rare bleeding disorder. Â
There may not be specific associated comorbidities linked to Factor XIII deficiency, as it is primarily an inherited genetic disorder. However, certain conditions or activities that increase the risk of injury can exacerbate bleeding complications.
For example, individuals who engage in contact sports, have a history of trauma or participate in activities with a higher risk of bleeding may experience more frequent bleeding episodes. Additionally, individuals with other coagulation disorders or liver disease may have increased bleeding tendencies if they also have Factor XIII deficiency.Â
The acuity of presentation in Factor XIII deficiency can vary. In severe cases, the deficiency may present life-threatening bleeding episodes, such as intracranial hemorrhage or spontaneous bleeding into muscles or joints. These severe bleeding events often prompt immediate medical attention and investigation.
In milder cases, the initial presentation may involve less severe bleeding episodes, such as prolonged bleeding from cuts, delayed wound healing, or excessive bruising. In some cases, the diagnosis of Factor XIII deficiency may not be made until later in life if mild bleeding symptoms are attributed to other factors initially.Â
The diagnosis of Factor XIII deficiency requires a comprehensive evaluation, as its symptoms can overlap with those of other bleeding disorders. Â
Factor XIII deficiency’s treatment paradigm revolves around replacing the deficient or dysfunctional Factor XIII. The mainstay of treatment is the infusion of purified Factor XIII concentrates derived from human plasma or produced recombinantly. These concentrates contain both the A and B subunits of Factor XIII and can effectively replace the missing or insufficient clotting factor.
The dosing and frequency of Factor XIII infusions depend on the individual’s severity of deficiency and bleeding tendencies. Prophylactic treatment with regular infusions may be recommended for individuals with severe deficiencies or frequent bleeding episodes. In contrast, those with milder deficiencies may receive on-demand treatment when bleeding occurs. Additionally, patients should be educated about recognizing early signs of bleeding and have access to treatment facilities for prompt management.Â
In cases where Factor XIII concentrates are unavailable or unsuitable, fresh frozen plasma (FFP) can be used as an alternative treatment option. However, FFP may not provide consistent and predictable Factor XIII levels, and the volume required for effective treatment can be substantial. Genetic counseling is also an essential component of the treatment paradigm for Factor XIII deficiency, especially in the congenital form, to educate affected individuals and their families about the genetic inheritance pattern and potential risks for future generations.
With appropriate and timely treatment, individuals with Factor XIII deficiency can effectively prevent bleeding episodes, minimize complications, and lead a relatively everyday life. Regular follow-up and monitoring by a hematologist or a healthcare professional specialized in bleeding disorders are essential to ensure optimal treatment outcomes and address any emerging issues promptly.Â
Modifying the environment plays an essential role in managing individuals with Factor XIII deficiency, particularly in preventing injuries and bleeding episodes. Â
Recombinant Factor XIII A subunit (rFXIII-A) is a synthetic form of the missing factor XIII, and it is used as a replacement therapy for patients with Factor XIII Deficiency. It helps to restore the missing clotting factor and improve the stability of blood clots, reducing the risk of bleeding episodes.Â
Plasma-derived Factor XIII concentrate is another treatment option for patients with Factor XIII Deficiency. Like Recombinant Factor XIII A subunit (rFXIII-A), plasma-derived Factor XIII concentrate is used to replace the missing or deficient Factor XIII in individuals with this bleeding disorder.Â
Treating Factor XIII Deficiency with Fresh Frozen Plasma (FFP) that has undergone solvent/detergent (S/D) treatment is another option available.
However, it’s important to note that S/D treatment is primarily used to inactivate enveloped viruses in plasma-derived products, and it is not specifically indicated for Factor XIII Deficiency.Â
Treating Factor XIII Deficiency with Cryoprecipitate is another option. Â
Aminocaproic acid is a drug used to treat or prevent excessive bleeding in various medical conditions, including Factor XIII deficiency, also known as fibrin-stabilizing factor deficiency or FXIII deficiency. Factor XIII is an essential clotting factor that plays a crucial role in stabilizing blood clots by cross-linking fibrin strands.Â
For individuals with Factor XIII deficiency, their blood clots are less stable and more prone to breaking down, leading to prolonged bleeding episodes. Aminocaproic acid can help address this issue by promoting clot stability and reducing bleeding. Â
Tranexamic acid is another medication commonly used to treat bleeding disorders, including Factor XIII deficiency. It is an antifibrinolytic agent that helps to prevent the breakdown of blood clots, thereby reducing excessive bleeding. While it is not a replacement for Factor XIII itself, it can be used as a supportive therapy to manage bleeding episodes in individuals with Factor XIII deficiency. Â
The primary treatment intervention with a procedure for Factor XIII deficiency is the intravenous infusion of purified Factor XIII concentrates.
This procedure involves administering concentrated Factor XIII derived from human plasma or produced recombinantly directly into the patient’s bloodstream. The Factor XIII concentrates contain both the A and B subunits of the clotting factor and serve to replace the deficient or dysfunctional Factor XIII.Â
The frequency and dosage of Factor XIII concentrate infusions depend on the severity of the deficiency, the individual’s bleeding history, and the healthcare provider’s treatment plan.
In some cases, individuals with severe Factor XIII deficiency may require prophylactic treatment with regular infusions to prevent bleeding episodes. In contrast, those with milder deficiencies may receive treatment on-demand when bleeding occurs.Â
Other procedures may be necessary if an individual with Factor XIII deficiency experiences significant bleeding episodes or complications.
The treatment phase of management for Factor XIII deficiency can be divided into three main phases: acute management, prophylactic treatment, and supportive care. Â
Factor XIII (FXIII) deficiency, also known as fibrin-stabilizing factor deficiency, is a rare and inherited bleeding disorder characterized by inadequate or deficient levels of Factor XIII in the blood. Factor XIII is a crucial clotting factor that plays an important role in stabilizing blood clots by cross-linking fibrin molecules, which are the building blocks of a stable clot. Cross-linking strengthens the clot’s structure and prevents premature degradation, ensuring proper wound healing and protection against excessive bleeding.
The disorder is caused by mutations in the F13A1 or F13B genes, which encode the A and B subunits of Factor XIII, respectively. Factor XIII deficiency is classified into two main types: congenital (inherited) and acquired. The congenital form is typically diagnosed in childhood and is passed down through families in an autosomal recessive pattern. Acquired Factor XIII deficiency may occur due to various factors, such as liver disease, certain medications, or autoimmune disorders.Â
Individuals with Factor XIII deficiency are prone to spontaneous and delayed bleeding after injuries or surgical procedures. Common symptoms include prolonged bleeding from wounds, easy bruising, bleeding into joints and muscles, and excessive bleeding during menstruation. Severe bleeding can be life-threatening and may lead to serious complications. The diagnosis is confirmed through specific laboratory tests that assess the activity levels of Factor XIII in the blood. Treatment often involves replacement therapy with purified Factor XIII concentrates to prevent bleeding episodes and promote clot stability. Â
Factor XIII deficiency is an infrequent bleeding disorder that can be either inherited or acquired. Â
Inherited Factor XIII Deficiency:Â
Acquired Factor XIII Deficiency:Â
Factor XIII deficiency is an infrequent bleeding disorder characterized by a deficiency or dysfunction of Factor XIII, also known as a fibrin-stabilizing factor. Factor XIII is a critical component of the coagulation cascade, which is responsible for the formation and stabilization of blood clots. The pathophysiology of Factor XIII deficiency revolves around the impaired cross-linking of fibrin molecules, leading to weak and unstable blood clots.Â
When there is a vascular injury or tissue damage, the initial stages of the coagulation cascade are activated, resulting in the formation of a fibrin clot. Fibrinogen, a soluble plasma protein, is converted into fibrin through thrombin. Fibrin molecules then form a loose network, which acts as the initial scaffold for the clot. However, this initial fibrin clot is fragile and easily degraded, making it insufficient to stop bleeding effectively.Â
Factor XIII plays a key role in the next step of the coagulation process. It acts as a transglutaminase enzyme, catalyzing the formation of covalent bonds between adjoining fibrin molecules. This cross-linking process, or fibrin polymerization, strengthens the fibrin network, transforming the fragile fibrin clot into a stable and durable structure.Â
In individuals with Factor XIII deficiency, this cross-linking process is impaired due to either insufficient levels or dysfunctional forms of Factor XIII. As a result, the fibrin clot remains weak and unstable, making it more susceptible to premature degradation. This leads to prolonged bleeding and delayed wound healing in affected individuals. Factor XIII deficiency can manifest as mild, moderate, or severe depending on the level of functional Factor XIII present.Â
Factor XIII deficiency can be inherited in an autosomal recessive pattern caused by the mutations in the F13A1 or F13B genes, which encode the A and B subunits of Factor XIII, respectively. It can also be acquired in rare cases due to conditions that interfere with Factor XIII production or function, such as liver disease or autoimmune disorders.Â
Factor XIII deficiency, or fibrin-stabilizing factor deficiency, can have both congenital and acquired etiologies. Â
Congenital Factor XIII Deficiency: Congenital Factor XIII deficiency is the most common form inherited in an autosomal recessive pattern, meaning both parents should have to carry a mutated gene for the disorder to be passed on to their child. The condition is caused by mutations in the genes that encode the A and B subunits of Factor XIII, known as F13A1 and F13B, respectively. These genetic mutations lead to reduced or dysfunctional Factor XIII activity, resulting in the deficiency of this critical clotting factor in the affected individual’s blood. The severity of the deficiency can vary depending on the specific mutations and the residual activity of Factor XIII.Â
Acquired Factor XIII Deficiency: Acquired Factor XIII deficiency is much rarer than the congenital form and occurs due to factors that interfere with the production or function of Factor XIII. Some of the potential causes of acquired Factor XIII deficiency include:Â
The prognosis of Factor XIII deficiency, a rare bleeding disorder, can vary depending on several factors. Proper management and timely treatment significantly influence the outlook of affected individuals. Â
Age Group:
Factor XIII deficiency can present at any age, but the age of presentation might vary based on severity of the deficiency. In severe cases, symptoms may become evident in the neonatal period, with umbilical cord bleeding or intracranial hemorrhage being potential complications. In moderate or milder cases, symptoms may not manifest until later in childhood or adolescence, as individuals become more active and experience injuries or surgeries.Â
The physical examination of a person suspected to have Factor XIII deficiency is essential in the diagnostic process. An in-depth examination and a detailed medical history can provide valuable clues to support or rule out the diagnosis of this rare bleeding disorder. Â
There may not be specific associated comorbidities linked to Factor XIII deficiency, as it is primarily an inherited genetic disorder. However, certain conditions or activities that increase the risk of injury can exacerbate bleeding complications.
For example, individuals who engage in contact sports, have a history of trauma or participate in activities with a higher risk of bleeding may experience more frequent bleeding episodes. Additionally, individuals with other coagulation disorders or liver disease may have increased bleeding tendencies if they also have Factor XIII deficiency.Â
The acuity of presentation in Factor XIII deficiency can vary. In severe cases, the deficiency may present life-threatening bleeding episodes, such as intracranial hemorrhage or spontaneous bleeding into muscles or joints. These severe bleeding events often prompt immediate medical attention and investigation.
In milder cases, the initial presentation may involve less severe bleeding episodes, such as prolonged bleeding from cuts, delayed wound healing, or excessive bruising. In some cases, the diagnosis of Factor XIII deficiency may not be made until later in life if mild bleeding symptoms are attributed to other factors initially.Â
The diagnosis of Factor XIII deficiency requires a comprehensive evaluation, as its symptoms can overlap with those of other bleeding disorders. Â
Factor XIII deficiency’s treatment paradigm revolves around replacing the deficient or dysfunctional Factor XIII. The mainstay of treatment is the infusion of purified Factor XIII concentrates derived from human plasma or produced recombinantly. These concentrates contain both the A and B subunits of Factor XIII and can effectively replace the missing or insufficient clotting factor.
The dosing and frequency of Factor XIII infusions depend on the individual’s severity of deficiency and bleeding tendencies. Prophylactic treatment with regular infusions may be recommended for individuals with severe deficiencies or frequent bleeding episodes. In contrast, those with milder deficiencies may receive on-demand treatment when bleeding occurs. Additionally, patients should be educated about recognizing early signs of bleeding and have access to treatment facilities for prompt management.Â
In cases where Factor XIII concentrates are unavailable or unsuitable, fresh frozen plasma (FFP) can be used as an alternative treatment option. However, FFP may not provide consistent and predictable Factor XIII levels, and the volume required for effective treatment can be substantial. Genetic counseling is also an essential component of the treatment paradigm for Factor XIII deficiency, especially in the congenital form, to educate affected individuals and their families about the genetic inheritance pattern and potential risks for future generations.
With appropriate and timely treatment, individuals with Factor XIII deficiency can effectively prevent bleeding episodes, minimize complications, and lead a relatively everyday life. Regular follow-up and monitoring by a hematologist or a healthcare professional specialized in bleeding disorders are essential to ensure optimal treatment outcomes and address any emerging issues promptly.Â
Modifying the environment plays an essential role in managing individuals with Factor XIII deficiency, particularly in preventing injuries and bleeding episodes. Â
Recombinant Factor XIII A subunit (rFXIII-A) is a synthetic form of the missing factor XIII, and it is used as a replacement therapy for patients with Factor XIII Deficiency. It helps to restore the missing clotting factor and improve the stability of blood clots, reducing the risk of bleeding episodes.Â
Plasma-derived Factor XIII concentrate is another treatment option for patients with Factor XIII Deficiency. Like Recombinant Factor XIII A subunit (rFXIII-A), plasma-derived Factor XIII concentrate is used to replace the missing or deficient Factor XIII in individuals with this bleeding disorder.Â
Treating Factor XIII Deficiency with Fresh Frozen Plasma (FFP) that has undergone solvent/detergent (S/D) treatment is another option available.
However, it’s important to note that S/D treatment is primarily used to inactivate enveloped viruses in plasma-derived products, and it is not specifically indicated for Factor XIII Deficiency.Â
Treating Factor XIII Deficiency with Cryoprecipitate is another option. Â
Aminocaproic acid is a drug used to treat or prevent excessive bleeding in various medical conditions, including Factor XIII deficiency, also known as fibrin-stabilizing factor deficiency or FXIII deficiency. Factor XIII is an essential clotting factor that plays a crucial role in stabilizing blood clots by cross-linking fibrin strands.Â
For individuals with Factor XIII deficiency, their blood clots are less stable and more prone to breaking down, leading to prolonged bleeding episodes. Aminocaproic acid can help address this issue by promoting clot stability and reducing bleeding. Â
Tranexamic acid is another medication commonly used to treat bleeding disorders, including Factor XIII deficiency. It is an antifibrinolytic agent that helps to prevent the breakdown of blood clots, thereby reducing excessive bleeding. While it is not a replacement for Factor XIII itself, it can be used as a supportive therapy to manage bleeding episodes in individuals with Factor XIII deficiency. Â
The primary treatment intervention with a procedure for Factor XIII deficiency is the intravenous infusion of purified Factor XIII concentrates.
This procedure involves administering concentrated Factor XIII derived from human plasma or produced recombinantly directly into the patient’s bloodstream. The Factor XIII concentrates contain both the A and B subunits of the clotting factor and serve to replace the deficient or dysfunctional Factor XIII.Â
The frequency and dosage of Factor XIII concentrate infusions depend on the severity of the deficiency, the individual’s bleeding history, and the healthcare provider’s treatment plan.
In some cases, individuals with severe Factor XIII deficiency may require prophylactic treatment with regular infusions to prevent bleeding episodes. In contrast, those with milder deficiencies may receive treatment on-demand when bleeding occurs.Â
Other procedures may be necessary if an individual with Factor XIII deficiency experiences significant bleeding episodes or complications.
The treatment phase of management for Factor XIII deficiency can be divided into three main phases: acute management, prophylactic treatment, and supportive care. Â

Both our subscription plans include Free CME/CPD AMA PRA Category 1 credits.

On course completion, you will receive a full-sized presentation quality digital certificate.
A dynamic medical simulation platform designed to train healthcare professionals and students to effectively run code situations through an immersive hands-on experience in a live, interactive 3D environment.

When you have your licenses, certificates and CMEs in one place, it's easier to track your career growth. You can easily share these with hospitals as well, using your medtigo app.
