Amphiregulin
Probetacellulin
Epigen
Proepiregulin
Proheparin-binding EGF-like growth factor
Pro-neuregulin-1, membrane-bound isoform
Pro-neuregulin-2, membrane-bound isoform
Pro-neuregulin-3, membrane-bound isoform
Pro-neuregulin-4, membrane-bound isoform
Protransforming growth factor alpha