Disclosed is a binding molecule comprising a D114-binding component and a VEGF-binding component, wherein said Dll4-binding component is a VHH having an amino acid sequence selected from sequences shown in SEQ ID NOs: 34 and 35 and said VEGF-binding component is a VHH having an amino acid sequence selected from sequences shown in SEQ ID NOs: 42 - 44. The disclosed binding molecule has the following CDR regions according to SYAMA, AIRWSGGTAYYADSVKG, WGQGTLVTVSS, SYSMG, AISXGGXXYDAVSLXG and SRAYGSSRLRLADTYDY