This is a family of unknown function found in Eukaryota. Family members include the human CXorf57. High-throughput sequencing used to identify genes driving tumorigenesis in Avian leukosis virus (ALV)-induced B-cell lymphomas, showed CXorf57 as the 10th most frequently targeted common integration site by ALV. ALV induces B-cell lymphoma and other neoplasms in chickens by integrating within or near cancer genes and perturbing their expression. CXorf57 encodes a protein that has a conserved putative replication factor A protein 1 domain. Several proteins with this domain have been shown to be involved in recognition of DNA damage for nucleotide excision repair. CXorf57 contains 24 unique integration sites that are spaced throughout the gene and in no preferred orientation [1].

1: Common Viral Integration Sites Identified in Avian Leukosis Virus-Induced B-Cell Lymphomas. Justice JF 4th, Morgan RW, Beemon KL; MBio. 2015;6:e01863-e01815. PMID:26670384