MRD-2 in the GHSG HD21 trial assessed by a validated circulating tumor DNA sequencing assay. - Heger JM; Mattlener J; Kaul H; Ferdinandus J; Schneider J; Schleifenbaum JK; Schneider G; Schaub V; Hänel M; Hellmuth JC; Dierlamm J; Martin S; et al. (Blood, 2026)