DCDC2B (Doublecortin Domain Containing 2B) is a protein that belongs to the doublecortin family, recognised for its role in brain development. Proteins in this family contain doublecortin domains that bind to microtubules, assisting in guiding neuronal migration and the proper formation of the cerebral cortex. The correct functioning of DCDC2B is essential for normal brain development, and alterations in this protein may be linked to neurological disorders and developmental problems.