An analogue of dorsomorphin (DMH1), much more highly selective for type 1 BMPR, can attenuate the pro-tumour microenvironment by altering the expression of certain genes (such as ID-1 and matrix metalloproteases-MMPs) in fibroblasts, lymphatic vessels and macrophages in a mouse model (Owens et al. 2015). Here, ID1 is linked to neoplasm.