ADIRF (adipogenesis regulatory factor) is a nuclear protein that plays dual roles in cellular differentiation and tumorigenesis. In normal physiology, ADIRF promotes adipogenic differentiation by stimulating transcription of master adipogenesis factors like PPARG and CEBPA during early preadipocyte differentiation 1. The gene exhibits complex epigenetic regulation through DNA methylation and m6A modifications, where hypermethylation of the ADIRF promoter leads to decreased expression 2. In cancer contexts, ADIRF demonstrates tumor suppressor activity in lung adenocarcinoma, where its restoration attenuates cell growth and metastasis 3. The gene's expression is regulated by the m6A pathway, specifically through ALKBH5-mediated demethylation that increases ADIRF mRNA stability by preventing YTHDC2-mediated degradation 3. Loss of ADIRF expression has been implicated in carcinogen-induced malignant transformation, including NNK-induced lung cancer and microcystin-induced hepatocellular carcinoma 24. ADIRF is also found in stromal cells, particularly as a marker of myofibroblasts in autoimmune thyroid diseases 1. The antisense lncRNA ADIRF-AS1 functions as an oncogenic regulator in multiple cancers, highlighting the complex regulatory network surrounding this gene 56.