Biology

Difference Between Hemophilia A and B and C

Overview of Hemophilia A and B and C

The most significant distinction in Hemophilia A and B and C is the fact that hemophilia A can be attributed to a deficiency in the clotting factor VIII. Hemophilia B results from the lack of the clotting factor IX. hemophilia C results from the lack of clotting factor IX.

Hemophilia A and B are caused by an inheritable recessive X-linked condition that has an indefective gene on the X chromosome. Males are born with only one X chromosome and females possess two X chromosomes. Males suffering from hemophilia are carrying one of the defective genes in the X chromosome.

Thus, the majority of patients suffering from hemophilia are men. Hemophilia C doesn’t follow any pattern that is X-linked since the mutation is located in a gene on chromosome 4. Thus, hemophilia C impacts the male and female in equal measure.

Hemophilia A

Hemophilia A (HBA) is an X-linked genetic bleeding disorder that results in blood clotting disorders and irregular bleeding patterns. Hemophilia A is caused by either deficient levels or the absence of the factor VIII protein involved in creating blood clots forming, so more males suffer than females from Hemophilia A.

Signs and symptoms associated with Hemophilia A can vary in intensity depending upon its severity; they typically involve long-term bleeding following injuries, surgeries, or dental work as well as sudden muscle and joint inflammation that leads to sudden bouts of bleeding. Patients diagnosed with this disorder might also find themselves more prone to excessive bleeding than normal and frequently develop deep bruises or hematomas.

Hemophilia A
Figure 01: Hemophilia A

Diagnostic of Hemophilia It often requires a physical exam, medical history review, and blood testing in order to ascertain which factors lead to blood clotting. Genetic tests may also be conducted either to verify a diagnosis or establish carrier status.

Hemophilia A is treated by administering intravenous infusions of concentrated clotting factors to replace what’s missing and manage bleeding episodes or as a prophylactic therapy to avoid them altogether. Physical therapy or pain management techniques may be utilized as well to address muscle and joint injuries caused by episodes.

Hemophilia A is the most frequent form of Hemophilia and affects one out of every 5,000 to 10,000 males; unfortunately, there is no known cure; however, when treated and managed appropriately those living with Hemophilia A can lead relatively normal lives.

Hemophilia B

Hemophilia B is a genetic bleeding disorder affecting blood clotting. This condition results from either insufficient amounts or no presence of Clotting Factor IX protein that aids blood clot formation; commonly referred to as Christmas Disease in recognition of the first patient who was ever diagnosed.

Hemophilia B is also an X-linked recessive condition, meaning it affects more males than females. Like Hemophilia A, symptoms for Hemophilia B include prolonged bleeding from injuries or surgery as well as spontaneous joint and muscle bleeding; occasional spontaneous bouts may even develop spontaneously! In addition, those living with Hemophilia B can also easily bruise as well as develop deep bruises (hematomas or deep bruises).

Hemophilia B
Figure 02: Hemophilia B

Hemophilia B can be diagnosed similarly to Hemophilia A; diagnosis requires a physical exam, medical history review, and blood testing of clotting factors; genetic testing can also be utilized as part of diagnosis or carrier status determination.

Treatment for Hemophilia B involves administering intravenous infusions of clotting factor concentrate to replace missing clotting factors and control bleeding episodes or as prophylactic measures against future bleeding events. Physical therapy or pain management may be utilized as well to address joint and muscle damage caused by bleeding episodes.

Hemophilia B is less frequent than Hemophilia A and typically affects one out of 25,000 to 30,000 males. While no cure exists, with proper management people with Hemophilia B can live relatively normal lives.

Hemophilia C

Hemophilia C is an uncommon bleeding disorder affecting blood clotting, caused by deficiency or absence of Clotting Factor XI – an essential protein required to form blood clots – unlike Hemophilia A and B which are autosomal recessive disorders and thus affect only males equally.

Hemophilia C
Figure 03: Hemophilia C Treatment

Hemophilia C symptoms vary in intensity but typically include mild to moderate bleeding from injuries or surgeries as well as spontaneous joint and muscle bleeding. People living with Hemophilia C often bruise easily and develop deep bruises; women may even experience heavy menstrual periods or postpartum hemorrhaging as a side effect of having this genetic disease.

Diagnosing Hemophilia C typically involves conducting a physical exam and reviewing one’s medical history, followed by blood tests measuring clotting factors and genetic testing to confirm or rule out carrier status.

Hemophilia C treatments are similar to Hemophilia A and B; intravenous infusion of clotting factor concentrate is used to replace missing clotting factors as needed or prophylactically to avoid bleeding episodes, and physical therapy and pain management may be utilized during episodes to manage joint and muscle damage caused by bleeding episodes.

Comparison between Hemophilia A, B, and C

Hemophilia A, B, and C are three different types of hemophilia, which are inherited bleeding disorders. They are caused by deficiencies in specific clotting factors, leading to prolonged bleeding and difficulty in forming blood clots. Here’s a comparison of the three types:

  1. Hemophilia A:
    • Deficient Clotting Factor: Hemophilia A is caused by a deficiency of clotting factor VIII (FVIII).
    • Prevalence: Hemophilia A is the most common type of hemophilia, accounting for about 80-85% of cases.
    • Inheritance: It is inherited in an X-linked recessive manner, meaning it primarily affects males, while females are usually carriers.
    • Severity: Hemophilia A severity varies from mild to severe, depending on the level of FVIII activity in the blood.
    • Symptoms: Prolonged bleeding, easy bruising, joint pain, and excessive bleeding following injuries or surgeries.
  2. Hemophilia B:
    • Deficient Clotting Factor: Hemophilia B is caused by a deficiency of clotting factor IX (FIX).
    • Prevalence: Hemophilia B is less common than Hemophilia A, accounting for about 15% of cases.
    • Inheritance: Like Hemophilia A, it is also inherited in an X-linked recessive manner.
    • Severity: Similar to Hemophilia A, the severity of Hemophilia B varies from mild to severe, depending on the level of FIX activity in the blood.
    • Symptoms: Symptoms are similar to Hemophilia A, including prolonged bleeding and joint pain.
  3. Hemophilia C:
    • Deficient Clotting Factor: Hemophilia C is caused by a deficiency of clotting factor XI (FXI).
    • Prevalence: Hemophilia C is relatively rare compared to A and B and is generally milder in its presentation.
    • Inheritance: Unlike Hemophilia A and B, Hemophilia C is inherited in an autosomal recessive pattern, affecting both males and females equally.
    • Severity: Hemophilia C is usually milder than A and B because factor XI deficiency does not lead to as significant bleeding problems.
    • Symptoms: Bleeding symptoms are generally less severe and may vary from person to person.

In terms of treatment, all types of hemophilia can be managed with clotting factor replacement therapy. Hemophilia A and B are usually treated with recombinant or plasma-derived factor concentrates specific to the deficient clotting factor (FVIII for Hemophilia A and FIX for Hemophilia B). Hemophilia C may require treatment only in severe cases or in specific situations.

It’s essential for individuals with hemophilia to work closely with a hematologist and a healthcare team to manage their condition, prevent complications, and maintain a good quality of life. Genetic counseling is also crucial for families affected by hemophilia to understand the risks of inheritance and make informed decisions.

Conclusion

Hemophilia A and B and C are genetic bleeding disorders caused by deficiencies or absences of certain clotting factors. This condition may lead to spontaneous joint and muscle bleeding as well as prolonged bleeding following injury, surgery, or dental work. Hemophilia A and B are both X-linked recessive disorders that typically impact males more often than females; Hemophilia C however can impact both genders equally.

Treatment for all three forms involves infusing intravenous infusion of clotting factor concentrate to replace missing clotting factors; with proper management and care plans in place, people living with Hemophilia can lead relatively normal lives.