Dysfibrinogenemia
What is Dysfibrinogenemia?
Dysfibrinogenemia is a rare genetic disorder that affects how your blood clots. Your body makes a protein called fibrinogen, which helps form blood clots when you get injured. In dysfibrinogenemia, your fibrinogen levels may look normal on basic tests, but the protein does not work properly.
This condition happens because of changes in the genes that control fibrinogen production. The fibrinogen protein has an unusual structure that prevents it from doing its job correctly. Most people inherit this disorder from one parent, though some cases happen without a family history.
Dysfibrinogenemia can cause different problems in different people. Some people bleed too easily because their blood cannot clot properly. Others form clots too easily, which can be dangerous. Many people with this condition have no symptoms at all and only discover it through routine blood work.
Symptoms
- Easy bruising or bleeding that takes longer to stop
- Nosebleeds that happen frequently or last a long time
- Heavy menstrual bleeding in women
- Blood clots in legs, lungs, or other organs
- Excessive bleeding after surgery or dental work
- Bleeding in the umbilical cord area in newborns
- Blood in urine or stools
Many people with dysfibrinogenemia have no symptoms throughout their entire lives. The condition is often discovered accidentally during routine blood testing or before a planned surgery.
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Causes and risk factors
Dysfibrinogenemia is caused by mutations in the genes that make fibrinogen protein. These genes include FGA, FGB, and FGG. When these genes have errors, they produce fibrinogen that looks normal in quantity but works abnormally. Most people inherit one abnormal gene from a parent, which is enough to cause the condition.
Risk factors include having a family history of bleeding disorders, unexplained clotting problems, or relatives with dysfibrinogenemia. Since this is a genetic condition, you cannot prevent it through lifestyle changes. The mutation is present from birth, though symptoms may not appear until later in life or may never appear at all.
How it's diagnosed
Dysfibrinogenemia is diagnosed through specialized blood tests that measure both fibrinogen quantity and function. A fibrinogen test checks the amount of fibrinogen in your blood. In dysfibrinogenemia, this level often appears normal. Additional functional tests show that the fibrinogen does not work properly, revealing a mismatch between quantity and function.
Rite Aid offers fibrinogen testing as an add-on to our preventive health panel. Testing is available at Quest Diagnostics locations nationwide. If functional testing shows abnormal results, your doctor may order genetic testing to confirm the diagnosis and identify the specific mutation causing the problem.
Treatment options
- Regular monitoring with blood tests to track fibrinogen levels and function
- Avoiding medications that increase bleeding risk, such as aspirin and certain pain relievers
- Fibrinogen concentrate or cryoprecipitate infusions before surgeries or during severe bleeding episodes
- Anticoagulant medications for people who form clots too easily
- Antifibrinolytic drugs like tranexamic acid to reduce bleeding
- Wearing medical alert jewelry to inform emergency personnel of your condition
- Genetic counseling for family planning decisions
- Working with a hematologist who specializes in blood clotting disorders
Need testing for Dysfibrinogenemia? Add it to your panel.
- Simple blood draw at your nearest lab
- Results in days, not weeks
- Share results with your doctor
Frequently asked questions
Dysfibrinogenemia means your fibrinogen protein works abnormally but is present in normal or near-normal amounts. Afibrinogenemia means you have little to no fibrinogen in your blood at all. Dysfibrinogenemia is usually less severe and may cause no symptoms, while afibrinogenemia always causes serious bleeding problems from birth.
Yes, dysfibrinogenemia can cause bleeding, clotting, or both, depending on the specific genetic mutation you have. About half of people with symptoms experience abnormal bleeding. About 20 percent have clotting problems. Some people have both issues at different times. Many people have no symptoms at all.
Most dysfibrinogenemia is inherited in an autosomal dominant pattern. This means you only need one abnormal gene from one parent to have the condition. If you have dysfibrinogenemia, each of your children has a 50 percent chance of inheriting it. Some cases happen as new mutations with no family history.
Many people with dysfibrinogenemia need no regular treatment if they have no symptoms. However, you should tell doctors and dentists about your condition before any surgery or dental work. Your medical team may give you fibrinogen replacement therapy before procedures to prevent bleeding complications.
A fibrinogen antigen test measures the amount of fibrinogen protein in your blood. A fibrinogen activity test measures how well it works. In dysfibrinogenemia, the antigen level looks normal but the activity level is low, creating a mismatch. This pattern helps doctors identify the condition and distinguish it from other clotting disorders.
Pregnancy can increase risks for women with dysfibrinogenemia, including miscarriage, placental problems, and bleeding during delivery. Close monitoring by a high-risk pregnancy specialist is important. Many women need fibrinogen replacement therapy during labor and delivery. With proper medical care, most women with dysfibrinogenemia can have healthy pregnancies.
If you have dysfibrinogenemia, your close relatives may want to consider testing, especially before surgeries or if planning pregnancy. Siblings have a 50 percent chance of having the condition if one parent has it. Children also have a 50 percent chance. Knowing their status helps family members prepare for medical procedures and make informed health decisions.
Avoid aspirin, ibuprofen, naproxen, and other nonsteroidal anti-inflammatory drugs that increase bleeding risk. Blood thinners like warfarin should only be used under close medical supervision. Always tell doctors and pharmacists about your condition before starting new medications. Some people need to avoid certain supplements like fish oil and vitamin E as well.
Testing frequency depends on your symptoms and treatment plan. People with no symptoms may only need testing before surgeries or major dental work. Those with bleeding or clotting problems may need testing every few months. Your hematologist will recommend a monitoring schedule based on your individual situation and medical history.
There is currently no cure for dysfibrinogenemia because it is a genetic condition. Treatment focuses on managing symptoms and preventing complications during high-risk situations. Research into gene therapy may offer future treatment options. Many people with dysfibrinogenemia live normal lives with proper medical care and awareness of their condition.