Microcephaly, Growth Restriction, and Increased Sister Chromatid Exchange 2, also known as mgrisce2, is related to baller-gerold syndrome and rothmund-thomson syndrome, type 2. An important gene associated with Microcephaly, Growth Restriction, and Increased Sister Chromatid Exchange 2 is TOP3A (DNA Topoisomerase III Alpha), and among its related pathways/superpathways are Homology Directed Repair and Regulation of TP53 Activity. Affiliated tissues include skin and skeletal muscle, and related phenotypes are microcephaly and short stature