Megalencephalic Leukoencephalopathy with Subcortical Cysts 2b,也称为Megalencephalic Leukoencephalopathy with Subcortical Cysts 2b,缓解型,伴有或不伴有智力障碍,与Megalencephalic Leukoencephalopathy with Subcortical Cysts 2b,缓解型,伴有或不伴有智力发育障碍和阿基里斯腱囊肿有关。与Megalencephalic Leukoencephalopathy with Subcortical Cysts 2b相关的基因是HEPACAM(肝细胞和星形胶质细胞粘附分子)。相关表型为巨脑和巨脑。