Congenital dyserythropoietic anemia, type III

Congenital dyserythropoietic anemia type III Congenital dyserythropoietic anemia type IIIDescription, Causes and Risk Factors:Abbreviation: CDA III.Congenital dyserythropoietic anemia type III is a group of very rare disorders characterized by similar bone marrow morphology. The clinical picture is characterized by hemolytic anemia and dramatic bone marrow changes dominated by active erythropoiesis with giant multlnucleate erythroblasts.The genetic cause of Congenital dyserythropoietic anemia type  has not been identified. It likely results from mutations in a gene located on the long arm of chromosome 15 at a position designated 15q21-q25. Researchers continue to search for the specific gene associated with this form of the condition. Preliminary results indicate genetic and phenotypic similarities between an American and a Swedish family, both with an autosomally dominant inherited form of CDA-III. It is possible that the genetic lesion is identical in these families, but the different phenotypes and modes of inheritance reported among some other cases of CDA-III are probably the results of other genetic lesions.At present, the function of the gene responsible for the Swedish variant of Congenital dyserythropoietic anemia type III (CDAN3) is unknown and it is an important goal to characterize and clone this gene in order to study its function.Nonfamilial Congenital dyserythropoietic anemia typeIII is the rarest type of the CDAs, with less than 20 well-documented cases. They are probably the results of other genetic lesions. Researchers observed CDA III-like giant erythroblasts in multiple myeloma and there are some doubts whether patients in whom Congenital dyserythropoietic anemia typeIII was detected on examination for malignant lymphoma truly had congenital anemia.In several families, CDA III appears to have an autosomal dominant pattern of inheritance. Autosomal dominant inheritance means that one copy of the altered gene in each cell is sufficient to cause the disorder. In these families, affected individuals often have a parent and other relatives with the condition.Symptoms:The signs and symptoms of Congenital dyserythropoietic anemia type III tend to be milder than those of the other types. Most affected individuals do not have hepatosplenomegaly, and iron does not build up in tissues and organs. In adulthood, abnormalities of a specialized tissue at the back of the eye (the retina) can cause vision impairment. Some people with CDA III also have a blood disorder known as monoclonal gammopathy, which can lead to a cancer of white blood cells (multiple myeloma).Diagnosis:The main laboratory finding is a mild macrocytic anemia, which makes it possible for most patients to reach longevity. Bone marrow examination by light microscopy reveals multinucleated large erythroid precursors and other dyserythropoietic features. The reported ultrastructural studies demonstrate various dysplastic features in the erythroblasts, such as multinuclearity, intranuclear clefts, iron-loaded mitochondria, and intracytoplasmic autophagic vacuoles and myelin figures.EM studies would be an important tool in diagnosis of Congenital dyserythropoietic anemia typeIII particularly during investigations of anemia of obscure etiology in aged person in which the diagnosis first seem to be improbable. In addition, analysis of ultrastructural findings in new cases of CDA III may be of help for understanding of pathogenesis and for its further classification.Treatment:Usually, no special treatment is needed. The patient should be seen by a specialist of Pediatrics or Internal Medicine in suitable intervals, and also by an ophthalmologist since changes endangering the vision may develop. Treatment usually consists of frequent blood transfusions and chelation therapy. Potential cures include bone marrow transplantation and gene therapy.NOTE: The above information is educational purpose. The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition.DISCLAIMER: This information should not substitute for seeking responsible, professional medical care. 

3 Comments

  1. Trish

    Hi, I’m more than interested in learning all that I can regarding CDA Type 2 and its location on Chromosome 15q21-15q25.. My son has been diagnosed with a mosaic mutation of the fbn1 gene which is also located on 15q21… I will help anyway I can to expedite answers and treatment for both of these disorders.. PLEASE contact me, I know we can tie these genes together.. Prayfully you will contact me soon!! I will anxiously await your reply!! Thank You

    Reply
    • Trish

      My original comment states CDA type 2, it needs to say CDA 3, as both of these genes are found on chromosome 15q 21-25

      Reply
      • editor-m

        Thanks for your comment, Trish. We will be very glad to help you, but all we can provide about particular disorder is in this article. If anything else concerns you, please, feel free to write us.

        Reply

Submit a Comment

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Cart Preview

The 7 Signs Your Body Doesn’t Get Enough Protein

The 7 Signs Your Body Doesn’t Get Enough Protein

Nowadays, everyone knows what protein is but only a few of us know for sure how much of it we need to consume. According to government guidelines, average protein consumption should be 0.8g per kilogram of body weight. The next seven signs show you’re not getting...

Endurance Exercises May Change the Composition of Gut Bacteria

Endurance Exercises May Change the Composition of Gut Bacteria

A new Finnish study, published in the journal Frontiers in Microbiology, finds that endurance exercises may change the composition of gut microbiota. The researchers developed a 6-week program of bicycle training and enrolled 17 overweight women for this program. All...

[WpProQuiz 1]

Featured Products

The 5 Best Accessories for Sports Fans

It is very entertaining to be a sport fan. There is a big variety of sport games that are extremely interesting to follow. Moreover, it is always fun to anticipate the score and watch the enthusiasm live. One of the benefits of being sports fan is using different...

read more

Exercise May Serve as an Antidepressant

A new study of nearly 18,000 participants found that those with high fitness at middle age were significantly less likely to die from heart disease in later life, even if they were diagnosed with depression. Doctor's Tips: How to Stay Fit While Treating Depression Dr....

read more

Fitness: Warm Ups Can Chill Out the Perfomance

The warm ups are supposed to increase body temperature and blood flow so the muscles and surrounding joints become more responsive and prepared for physical activity. Although there’s a neurological element to warm-ups, most research focuses on the physiological...

read more