Glial Fibrillary Acidic Protein (GFAP) Gene Mutation Detection by Next-Generation Sequencing

Why This Test Might Be Ordered

Your doctor may recommend this test if you have symptoms such as persistent headaches, unexplained seizures, or neurological problems like muscle weakness, vision changes, or balance issues. These symptoms could suggest conditions like glioma (brain tumor), multiple sclerosis, or other neurological disorders where GFAP plays a role.

What the Test Measures

GFAP is a protein found in certain brain cells called astrocytes. Mutations in the GFAP gene can lead to abnormal production of this protein, which may be detected through genetic sequencing. This test looks for specific changes (mutations) in the GFAP gene sequence in a sample of your DNA.

Sample Collection and Preparation

This test typically requires a blood sample (whole blood) or sometimes a saliva sample, depending on the lab’s protocol. Your doctor will provide instructions on how to prepare for the sample collection. The DNA is extracted from the sample and analyzed for mutations in the GFAP gene using advanced laboratory techniques.

What to Expect During and After the Test

You may not experience any discomfort during the blood draw, which usually takes a few minutes. Saliva collection is quick and painless. After the sample is taken, you can resume your normal activities. Results may take several weeks to a few months, depending on the lab’s workflow and testing complexity.