Prrc1, whose functions are still being explored, has been implicated in several biological processes. It contains a proline-rich domain and is involved in regulating anterograde trafficking. It is recruited to endoplasmic reticulum (ER) exit sites, interacts with the inner COPII coat, and influences the membrane association of COPII [2].

In secondary acute lymphoblastic leukemia (sALL), a fusion between 5'MLL and 3'PRRC1 was identified in a patient with sALL following chemotherapy for diffuse large B cell lymphoma [1]. In non-small cell lung cancer, PRRC1 was found to potentially play a role in MUC5AC glycosylation as it interacted and colocalized with MUC5AC in the Golgi [4]. In head and neck cancer, PRRC1 was identified as an independent prognostic factor through analysis of survival-associated alternative splicing events [5]. Also, in a study of children and adolescents, PRRC1 gene expression was negatively associated with deprivation [6]. In late adulthood, a region on chromosome 5 spanning the PRRC1 gene was significant at a genome-wide 10% empirical threshold in relation to fluid intelligence, and gene methylation analysis provided support for the association of PRRC1 and fluid intelligence [3].

In summary, Prrc1 appears to be involved in multiple biological processes and disease conditions. Its role in anterograde trafficking provides insights into cellular transport mechanisms. In diseases such as sALL, non-small cell lung cancer, head and neck cancer, and its association with deprivation and fluid intelligence, Prrc1 shows potential as a biomarker or therapeutic target. The findings from these studies contribute to understanding the complex functions of Prrc1 in normal biology and disease.