Affected Populations
The incidence of abetalipoproteinemia is estimated to be less than one in one million individuals. According to studies conducted, both men and women are equally susceptible to this condition, regardless of their ethnic background. However, it is more prevalent in societies that engage in consanguineous marriages, where individuals marry someone who shares a common ancestor. This practice increases the chances of a child inheriting two mutated MTTP genes.
Diagnosis
Diagnosing abetalipoproteinemia can be a challenging process that involves comprehensive clinical evaluation and multiple tests for confirmation. The most common diagnostic tests include measuring lipid and beta-lipoprotein levels as well as examining the shape of red blood cells to identify any blood abnormalities. Blood tests are effective in detecting these factors and can also measure the levels of fat-soluble vitamins. In certain cases, a thorough neurological assessment and eye examinations may be necessary to identify symptoms associated with abetalipoproteinemia. Additionally, molecular genetic testing can be conducted to detect any mutations in the MTTP gene.