CNPY1 (canopy FGF signaling regulator 1) is a conserved endoplasmic reticulum (ER)-localized protein belonging to the canopy family with structural characteristics of saposin-like proteins 1. While detailed functional mechanisms for CNPY1 specifically remain limited, family members share a saposin fold containing conserved disulfide bonds and regulate secretory transport of diverse proteins including growth factor receptors and toll-like receptors 2. CNPY1 expression is subject to developmental and epigenetic regulation; genotype-dependent increases in CNPY1 mRNA were observed in post-mortem cerebellum 3, and differential DNA methylation patterns associated with alternative promoter usage influence CNPY1 expression in myoblasts and cerebellum 4. Regarding disease relevance, CNPY1 has been implicated in endocrine function through altered DNA methylation patterns associated with prenatal phthalate exposure 5, and genetic variants near CNPY1 were associated with obesity susceptibility in a targeted resequencing study 5. The canopy family, including CNPY1, participates in angiogenesis, immune responses, and neurodevelopmental processes 1. However, the specific molecular mechanisms and clinical significance of CNPY1 require further investigation to fully elucidate its role in health and disease.