Diseases and Disorders

What is Fanconi Anemia? Stages of Fanconi Anemia

Last updated on October 20th, 2022 at 08:02 am

Fanconi anemia is a rare genetic disorder that causes bone marrow failure and cancer. Fanconi anemia affects one in 40,000 people worldwide. Learn more about this condition here!

Fanconi Anemia

Fanconi anemia (FA) is a genetic disorder that ultimately leads to bone marrow failure. Your bone marrow makes three different blood cells in your body. These include red blood cells, which bring oxygen to your tissues and organs, white blood cells, which fight infections, and platelets, which promote blood clotting to stop bleeding.

It’s natural for your blood cells to die. If your bone marrow isn’t replacing dead blood cells, you’ll develop bone marrow failure.

Fanconi anemia risk factors

Fanconi anemia patients have a higher risk of developing leukemia and lymphoma. Find out what risk factors showing for this disease!

FA is very serious and has lifelong complications, which can include;


Birth Defects

Birth defects connected to Fanconi anemia can include:

  • bone or skeletal defects
  • defects of the eye
  • defects of the ear, which may cause children with FA to be born deaf
  • skin discolouration
  • kidney problems, such as a missing kidney
  • congenital heart defects, the most common of which is a hole or defect in the lower wall that separates the left and right chambers of the heart, or a ventricular septal defect


  • 10 percent of people with FA develop leukaemia. People with FA may also develop cancerous tumours in their mouths.
  • FA is a recessive gene disorder. This means your parents both have to have the defective FA gene for you to develop FA.
  • The Fanconi Anemia Research Fund estimates that one in every 181 people has the defective gene. One out of every 131,000 children in the United States is born with FA. This condition can occur in men and women, and it’s seen more often in specific racial and ethnic groups.

Stages of the fanconi anemia

There are normally physical signs of this condition at birth, but some children with FA don’t show signs of FA until later in life. According to the research, over 60 percent of patients born with FA have at least one physical anomaly. The median lifespan for people with FA is 29 years, although some people live in their 50s.

Children with FA are commonly diagnosed with acute myeloid leukemia and myelodysplastic syndrome between the ages of 5 and 15.

When people with FA become adults, they’re at an increased risk of developing a wide range of cancers, including oral and bone cancers.

Fanconi anemia symptoms

FA is often diagnosed at birth or soon after because it affects the way your bone marrow produces blood cells. When you don’t have enough blood cells, you’ll experience:

Aplastic anemia

Aplastic anemia  – Aplastic anemia is characterized by a lack of energy due to low numbers of red blood cells, which helps to oxygenate your blood. The symptoms of anemia include dizziness, headaches, and an inability to keep your hands and feet warm.

Birth Defects – Certain types of birth defects will show that your infant has FA, including:

bone defects, especially involving the thumbs and arms

  • eye and ear defects
  • skin discolouration
  • kidney problems
  • congenital heart defects

Developmental Problems – Developmental problems can include:

  • low birth weight
  • poor appetite
  • delayed growth
  • a smaller-than-normal height
  • a smaller-than-normal head size
  • intellectual disability

Fanconi anemia symptoms in adults

Adults who are diagnosed later in life will usually experience a completely unique set of symptoms. The symptoms in adults will usually affect the sexual organs or the reproductive system. The symptoms in women include:

Men with FA may experience fertility issues and have smaller-than-normal genitals.

Fanconi anemia causes

FA is a genetic disease that occurs when two people with the recessive gene have children. Recessive means that the gene only expresses itself when it has been inherited from both parents. FA is a complicated genetic disease. Nineteen different genes have been connected to FA. Abnormalities in those 19 genes account for 95 percent of FA cases.

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Fanconi anemia diagnosis

One of the initial steps of diagnosis is investigating your family history. Since a recessive gene causes FA, parents might not be aware that they’re carriers. Your doctor will look for a history of family illnesses such as anemia, digestive disorders, and immune problems.

The methods used to conduct a genetic diagnosis of FA vary. A chromosome breakage test can be conducted using either skin cells or blood. A chemical will be combined with the cells. The cells’ chromosomes are analyzed under the microscope. The chromosomes of a person with FA will have very distinctive breakage.

Cytometric flow analysis, or flow cytometry, will analyze skin cells by mixing them with chemicals. If your cells react to the chemicals, it means that you likely have FA.

Mutation screening comprises using a skin cell sample to look for any defects in the 19 known genes associated with FA.

Short-term diagnosis methods for FA can include:

Screening for fanconi anemia before birth

Women who have a family history of FA should undergo genetic testing of their unborn baby. This can be done through amniocentesis and chorionic villus sampling (CVS).

In amniocentesis, a doctor uses a needle to remove fluid from the amniotic sac that contains the unborn baby. The fluid is tested for FA genes.

CVS involves inserting a tube through the vagina and cervix and using the tube to take tissue samples of the placenta. The tissue samples are then tested for the recessive FA gene. Chromosome breakage studies can also be performed using CVS.

If your child tests positive for the FA gene, they’ll be monitored for other signs of the condition. If your child is born with birth defects, their doctor will confirm an FA diagnosis with genetic testing.

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