Based on limited published evidence, CCDC169-SOHLH2 is a transcription regulator functioning in germline differentiation. UniProt annotations indicate it suppresses spermatogonial stem cell maintenance genes while inducing spermatogonial differentiation genes, and coordinates oocyte differentiation without affecting meiosis I. A population genomic study identified CCDC169-SOHLH2 as a candidate gene under balancing selection, consistent with its gamete function 1. Additionally, mutations in this gene were associated with gastric cancer prognosis in a prognostic panel study 2, though this finding requires further validation in germline-related contexts.