Zheng, Zhu, and co-authors performed untargeted mass spectrometry metabolomic analyses of human plasma from a testing cohort of patients with FH-deficient RCC (n = 10), sporadic RCC (clear cell RCC [ccRCC], papillary RCC, etc.)(n = 10), and healthy adults (n = 10). This evidence concerns the gene FH and nonpapillary renal cell carcinoma.