Introduction:
Our blood is made up of many parts. Red blood cells are important because they carry a special helper called hemoglobin. Hemoglobin is a tiny protein with iron inside, made of two alpha-globins and two beta-globins.
It has a big job: carrying oxygen from our lungs to every body part!
But what happens if our body doesn’t make enough hemoglobin? That means less oxygen goes around our body. This can make us sick. This is what happens in a condition called thalassemia. Thalassemia can be passed down from your parents. There are two main types: alpha thalassemia (when the alpha-globin parts don’t work well) and beta thalassemia (when the beta-globin parts don’t work well).
In this article, we’ll learn more about beta thalassemia, the different types, its symptoms, how doctors find it, and how they treat it.
What Is Beta Thalassemia?
Beta thalassemia is a blood problem in which the body doesn’t make enough hemoglobin. Without enough hemoglobin, the body doesn’t get all the oxygen it needs, leading to anemia and other complications. Beta thalassemia is something you're born with, and it comes from your genes. This condition is called an autosomal recessive disorder. That’s a big name, but here’s what it means. You get two sets of genes, one from your mom and one from your dad. If both genes are changed (mutated), you can have beta thalassemia and might feel sick. If you get just one changed gene, you are called a carrier. Carriers usually don’t feel ill or show any signs. But they can still pass the gene on to their children.
Types of Beta Thalassemia
Let’s learn about the different types.
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Beta-Thalassemia Minor (Trait): This is the mildest type. The person has one changed gene. Most people feel just fine or may have mild anemia.
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Beta-Thalassemia Intermedia: This type is slightly more serious than the mild one. People may feel tired or need treatment, like blood transfusions, occasionally.
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Beta-Thalassemia Major: This is the most severe form. The person has two changed genes, one from each parent. They may feel exhausted and need regular blood transfusions to stay healthy. Doctors call this transfusion-dependent thalassemia (TDT) or Cooley's anemia.
Another type is dominant beta thalassemia, which is very rare. Just one changed gene can cause symptoms.
Symptoms of Beta Thalassemia You Should Know
The signs of beta thalassemia can be different for each person.
Let’s take a look at the three types:
1. Beta Thalassemia Minor (Trait): Most people feel completely normal. Some may have mild anemia and feel a little tired, but that’s it!
2. Beta-Thalassemia Intermedia: The symptoms usually appear when the baby is a little older (childhood).
Symptoms include:
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Gallstones.
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Leg ulcers.
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Hepatomegaly (enlarged liver).
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Jaundice (yellowing of skin and eyes).
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Skeletal changes.
3. Beta Thalassemia Major: The signs usually start in the first two years of life, when a baby is between 6 and 24 months old.
Symptoms include:
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Severe life-threatening anemia.
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Slow growth and development.
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Jaundice.
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Enlarged liver, spleen, and sometimes heart.
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Misshapen bones (mostly head and face).
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Feeding issues, fever, diarrhea, irritability, and poor appetite.
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Delayed puberty.
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Weakness.
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Pale skin.
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Abdominal swelling.
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Shortness of breath.
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Frequent infections.
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Dizziness.
Causes of Beta Thalassemia
Beta thalassemia happens because of a change (mutation) in a gene called the HBB (hemoglobin subunit beta) gene. This gene lives on chromosome 11, one of the tiny instruction books inside our body! The HBB gene tells the body how to make an essential protein called beta-globin (a hemoglobin subunit).
So, when a mutation occurs, the gene doesn’t work the way it should, and this is what it does:
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Beta-Zero (β⁰) Thalassemia: Here, the HBB gene prevents beta globin production.
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Beta-Plus (β+) Thalassemia: Here, the HBB gene works slightly. The body makes some beta-globin, but not enough.
So when there’s not enough beta-globin, hemoglobin can’t form properly, and red blood cells can’t do their job. That’s what leads to anemia and other health problems in beta thalassemia.
How Is Beta Thalassemia Diagnosed?
Let’s explore the cool tools and tests doctors use!
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Complete Blood Count: This is usually the first test. It checks your blood to see if your hemoglobin is low, your red blood cells are smaller than usual, or your red blood cells are abnormally shaped.
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Hemoglobin Electrophoresis: It’s a special test that helps identify different types of hemoglobin.
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Molecular Genetic Testing: This test looks at your DNA. It checks for changes in the HBB gene.
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Prenatal Testing: This is done before the baby is born. If someone in the family already has beta thalassemia, doctors can test the baby before birth to check for it.
There are a few ways to do this:
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Chorionic Villus Sampling (CVS): Here, a small piece of the placenta is tested.
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Amniocentesis: Here, a little bit of the amniotic fluid is tested.
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Beta Thalassemia Treatment Options
The treatment for beta thalassemia depends on the severity of the condition. Some may need more help than others.
Let’s have a look!
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Regular Blood Transfusions: People with beta thalassemia major often need blood transfusions.
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Iron Chelation Therapy: Getting lots of blood transfusions can cause too much iron in the body. This is not good, so doctors use special medicines to remove the extra iron.
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Folic Acid Supplements: They help the body make new red blood cells.
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Splenectomy: Sometimes, doctors may remove the spleen if the condition worsens.
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Cholecystectomy: In some cases, doctors may remove the gallbladder.
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Stem Cell Transplant: This is a powerful treatment for people with severe thalassemia. They get healthy stem cells from a donor to make new, healthy blood.
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Gene Therapy: This has shown promising results. Treatment includes fixing the gene that causes thalassemia.
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Luspatercept: This new medicine helps adults with thalassemia feel less tired and need fewer transfusions (transfusion-dependent beta-thalassemia).
Apart from this, people with thalassemia need regular checkups and should undergo genetic counseling to help families understand the condition. Healthy eating, rest, and staying active are essential too!
Complications of Beta Thalassemia
Sometimes, beta thalassemia can lead to other health problems. Let’s look at what might happen.
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When there is severe anemia, you might feel exhausted and weak, grow slowly, have delayed puberty, or have bone issues.
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Too much iron in the body can lead to heart issues and liver damage and can also affect the endocrine system.
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Bones may become weak. There may be issues like fractures or osteoporosis.
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Gallstone formation.
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Increased risk of blood clots.
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More susceptible to infections.
Living With Beta Thalassemia
Living with beta thalassemia can be tough, especially if someone has the major kind. But kids and adults can live healthy lives with early check-ups, regular treatments, and healthy habits. Suppose someone has a beta thalassemia minor type. In that case, the life expectancy can be just like anyone else’s, and if one has a primary type of beta thalassemia, with proper treatment, one can live more than 60 years!
Conclusion:
Beta thalassemia can be a challenging condition. It occurs due to a change in a gene passed down from the parents. This change affects the production of hemoglobin. Some may have mild symptoms, but some might feel sick and need lifelong special care. If doctors find it early and give the right treatment, people with beta thalassemia can feel much better.
Key Takeaway From iCliniq:
A blood problem caused by a tiny gene change (beta thalassemia) can be challenging sometimes. Some people have a mild type and feel okay. Others have a more serious type and need special care. If you or any of your loved ones have this condition, don’t worry. Our doctors at iCliniq can help manage it well, and you can still enjoy life.
