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  2. Asplenia - Wikipedia

    en.wikipedia.org/wiki/Asplenia

    After splenectomy with the goal of arresting the progression of cancers (Chronic lymphocytic leukemia, Hodgkin's disease (starting in the 1970s), non-Hodgkin lymphoma) Due to underlying diseases that destroy the spleen (autosplenectomy), e.g. sickle-cell disease. Celiac disease: unknown physiopathology.

  3. Dyskeratosis congenita - Wikipedia

    en.wikipedia.org/wiki/Dyskeratosis_congenita

    Dyskeratosis congenita ( DKC ), also known as Zinsser-Engman-Cole syndrome, is a rare progressive congenital disorder with a highly variable phenotype. [3] The entity was classically defined by the triad of abnormal skin pigmentation, nail dystrophy, and leukoplakia of the oral mucosa, and MDS/AML, but these components do not always occur. [3 ...

  4. Spinal muscular atrophy - Wikipedia

    en.wikipedia.org/wiki/Spinal_muscular_atrophy

    1 in 10,000 people [2] Spinal muscular atrophy ( SMA) is a rare neuromuscular disorder that results in the loss of motor neurons and progressive muscle wasting. [3] [4] [5] It is usually diagnosed in infancy or early childhood and if left untreated it is the most common genetic cause of infant death. [6] It may also appear later in life and ...

  5. Balancing selection - Wikipedia

    en.wikipedia.org/wiki/Balancing_selection

    In such individuals, the hemoglobin in red blood cells is extremely sensitive to oxygen deprivation, which results in shorter life expectancy. A person who inherits the sickle cell gene from one parent and a normal hemoglobin allele (HgbA) from the other, has a normal life expectancy. However, these heterozygote individuals, known as carriers ...

  6. Moyamoya disease - Wikipedia

    en.wikipedia.org/wiki/Moyamoya_disease

    Moyamoya disease is a disease in which certain arteries in the brain are constricted. Blood flow is blocked by constriction and blood clots ( thrombosis ). [2] A collateral circulation develops around the blocked vessels to compensate for the blockage, but the collateral vessels are small, weak, and prone to bleeding, aneurysm and thrombosis.

  7. Hemoglobin C - Wikipedia

    en.wikipedia.org/wiki/Hemoglobin_C

    Hemoglobin C (abbreviated as HbC) is an abnormal hemoglobin in which glutamic acid residue at the 6th position of the β-globin chain is replaced with a lysine residue due to a point mutation in the HBB gene. [1] People with one copy of the gene for hemoglobin C do not experience symptoms, but can pass the abnormal gene on to their children.

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