The function of Ensembl gene identifier ENSG00000171840 (NINJ2, ninjurin 2) is as follows. Its role in unclear (PubMed:33472215, PubMed:38614101, PubMed:39667936). In contrast to NINJ1 paralog, does not mediate plasma membrane rupture (cytolysis) downstream of necroptotic and pyroptotic programmed cell death (PubMed:33472215, PubMed:38614101, PubMed:39667936). While it is able to oligomerize and form filaments, filaments are curved toward the intracellular space, preventing circularization to mediate plasma membrane rupture (PubMed:39667936). May act as a homophilic transmembrane adhesion molecule involved in nerve regeneration (PubMed:10627596). Promotes axonal growth (PubMed:10627596). {ECO:0000269|PubMed:10627596, ECO:0000269|PubMed:33472215, ECO:0000269|PubMed:38614101, ECO:0000269|PubMed:39667936}.