Circulating Tumor DNA as a Biomarker in Patients With Stage III and IV Wilms Tumor: Analysis From a Children’s Oncology Group Trial, AREN0533

Madanat-Harjuoja LM, Renfro LA, Klega K, Tornwall B, Thorner AR, Nag A, Dix D, Dome JS, Diller LR, Fernandez CV, Mullen EA, Crompton BD. Circulating Tumor DNA as a Biomarker in Patients With Stage III and IV Wilms Tumor: Analysis From a Children’s Oncology Group Trial, AREN0533. J Clin Oncol. 2022 Sep 10;40(26):3047-3056. doi: 10.1200/JCO.22.00098. Epub 2022 May 17. PubMed PMID: 35580298; PubMed Central PMCID: PMC9462535.

The utility of circulating tumor DNA (ctDNA) analyses has not been established in the risk stratification of Wilms tumor (WT). We evaluated the detection of ctDNA and selected risk markers in the serum and urine of patients with WT and compared findings with those of matched diagnostic tumor samples. Fifty of 395 children with stage III or IV WT enrolled on Children’s Oncology Group trial AREN0533 had banked pretreatment serum, urine, and tumor available. Next-generation sequencing was used to detect ctDNA. Copy-number changes in 1q, 16q, and 1p, and single-nucleotide variants in serum and urine were compared with tumor biopsy data. Event-free survival (EFS) was compared between patients with and without ctDNA detection.