The function of Ensembl gene identifier ENSG00000122376 (SHLD2, shieldin complex subunit 2) is as follows. Component of the shieldin complex, which plays an important role in repair of DNA double-stranded breaks (DSBs) (PubMed:29656893, PubMed:29789392). During G1 and S phase of the cell cycle, the complex functions downstream of TP53BP1 to promote non-homologous end joining (NHEJ) and suppress DNA end resection (PubMed:29656893, PubMed:29789392). Mediates various NHEJ-dependent processes including immunoglobulin class-switch recombination, and fusion of unprotected telomeres (PubMed:29656893). {ECO:0000269|PubMed:29656893, ECO:0000269|PubMed:29789392}.