NANOS3 encodes a zinc finger RNA-binding protein that plays crucial roles in germ cell development and maintenance. The protein regulates primordial germ cell (PGC) survival by suppressing apoptotic pathways during embryogenesis and maintaining the undifferentiated state of germ cells 1. NANOS3 functions through post-transcriptional mechanisms, binding to specific mRNAs and regulating their translation and stability 2. In cooperation with DND1, NANOS3 forms a complex that restricts germ cell specification by repressing translation of target mRNAs, including SOX4, within processing bodies (P-bodies) 3. The protein maintains pluripotency by prolonging the undifferentiated state and delaying differentiation 4. NANOS3 expression is normally restricted to testis and brain but becomes aberrantly expressed in various cancers 2. Mutations in NANOS3 are associated with primary ovarian insufficiency (POI), contributing to follicle exhaustion and infertility 56. The gene's dysregulation has been implicated in cancer progression, where it promotes epithelial-mesenchymal transition, cell proliferation, and chemoresistance in glioblastoma and lung cancer 72. NANOS3 is essential for both male and female fertility, with its dysfunction leading to reproductive disorders.