NSD2-PWWP1 ligand 1 (compound 34) is a small-molecule ligand that targets the NSD2-PWWP1 domain, with a potency of pIC50: 8.2. NSD2 is a large multidomain protein with functions in histone modification and reading. Dysregulation of the histone methyltransferase nuclear receptor binding SET domain 2 (NSD2) can lead to various hematological and solid malignancies. Binding of NSD2-PWWP1 ligand 1 to NSD2 reduces its enzymatic activity and inhibits tumor development.