This article explains whether is leukemia hereditary, while reviewing the genetic and environmental factors that may increase the likelihood of developing this disease.
Is leukemia hereditary in most cases?
In most cases, leukemia is not considered a hereditary disease, as it often appears as a result of random mutations in somatic cells due to acquired factors such as aging or exposure to UV radiation. However, it can run in families in rare instances; having an affected sibling slightly increases the probability, while this ratio rises to 1:5 for identical twins.
There are specific genetic mutations that may raise the risk, including:
- DDX41 mutation: Weakens the ability to prevent cancer growth, increasing the risk of acute myeloid leukemia.
- CEBPA mutation: Leads to a deficiency in white blood cells (increasing infections) and red blood cells (causing weakness and fatigue).
- RUNX1 mutation: Causes a decrease in platelet counts.
Risk factors for hereditary or acquired leukemia
Beyond genes, there are other causes that increase the likelihood of infection, including:
Genetic Syndromes:
- Down syndrome: Increases the risk of acute lymphoblastic and acute myeloid leukemia by 2% to 3%, and may cause transient leukemia in the first month of life.
- Li-Fraumeni, Bloom, Klinefelter, and Ataxia-telangiectasia syndromes.
Environmental and Health Factors:
- Exposure to radiation from atomic bombs or radiation used in cancer treatment.
- Exposure to chemicals such as benzene, or the use of certain types of chemotherapy.
- Smoking, which is linked to various types of cancers.
- Age and gender: The risk of lymphoid types (acute and chronic) increases with age, and males are more susceptible than females.
Symptoms of leukemia
Signs vary depending on the type of disease and include:
- Night sweats and elevated temperature.
- Enlargement of the spleen, liver, or lymph nodes.
- Appearance of red spots on the skin, and easy bleeding and bruising.
- Joint and bone pain accompanied by a general feeling of tiredness and exhaustion.
FAQ
Is cancer hereditary?
Inherited genetic mutations play a role in 5% to 10% of all cancer types, such as breast, prostate, and ovarian cancer, while most cases result from random, non-inherited mutations.
What are inherited blood disorders?
These are conditions resulting from a defect in genes inherited from parents, making blood cells unable to transport oxygen efficiently. Some types, such as Fanconi anemia, can increase the risk of acute myeloid leukemia.
What factors indicate the presence of hereditary cancer?
These include more than two people having the same type of cancer on one side of the family, the disease appearing at young ages (under 50), or an individual developing two different types of cancers.
Can the chance of developing cancer be reduced?
Hereditary cancers cannot be prevented, but the risks of acquired types can be reduced by quitting smoking, maintaining a healthy weight, following a diet rich in vegetables and fruits, and avoiding alcohol and processed meats.
When should you visit a doctor?
Medical consultation should be sought immediately upon the appearance of the following signs:
- Unexplained bruising or bleeding.
- Noticeable enlargement of the lymph nodes.
- Persistent fever and severe night sweats.
- Extreme fatigue unrelated to physical exertion.
Disclaimer: This content is for informational purposes only and does not substitute for professional medical advice.
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Photo: Henry Söderlund, BY 2.0, via flickr.com
approved by: Medica Health team