Notable among the twenty five top genes found to be co-expressed with ctag1b/a in sarcomas are protocadherin β3, tumor necrosis factor alpha-induced protein 8-like 3, demethylase jumonji domain containing 2C, cyclin-dependent kinase 6, and glycine dehydrogenase (decarboxylating) (Supplementary File S3). The gene discussed is GLDC; the disease is sarcoma.