Oocyte/zygote/embryo Maturation Arrest 4, also known as oocyte maturation defect 4, is related to teratoma and oocyte/zygote/embryo maturation arrest 2. An important gene associated with Oocyte/zygote/embryo Maturation Arrest 4 is PATL2 (PAT1 Homolog 2). Related phenotypes are female infertility and oocyte arrest at metaphase i