In an attempt to examine if FLI1 exonic circular RNAs (FECR) functions in small cell lung cancer (SCLC), a study found that patients with SCLC with lower level of exo-FECR1 experienced longer disease remissions than those with higher exo-FECR1 level (Li et al., 2019). The gene discussed is FLI1; the disease is small cell lung carcinoma.