However, recently, only Nagy et al. have used liquid biopsy to evaluate the clinical role of EZH2 mutations by ddPCR; however, this study was in patients with follicular lymphoma, and correlated the variant allele frequency with the volume of metabolically active tumor sites observed on 18F-fluorodeoxyglucose positron emission tomography combined with computer tomography (PET-CT) scans [42]. The gene discussed is EZH2; the disease is follicular lymphoma.