Component of the SWI5-SFR1 complex, a complex required for double-strand break repair via homologous recombination (PubMed:21252223). Acts as a transcriptional modulator for ESR1 (PubMed:23874500). {ECO:0000269|PubMed:21252223, ECO:0000269|PubMed:23874500}. This is the function of Ensembl gene identifier ENSG00000156384 (SFR1, SWI5 dependent homologous recombination repair protein 1).