Enables ciliary neurotrophic factor receptor binding activity and leukemia inhibitory factor receptor binding activity. Acts upstream of or within positive regulation of cell population proliferation. Predicted to be located in extracellular space. Predicted to be active in extracellular region. Is expressed in several structures, including central nervous system; lung; metanephros; neural retinal epithelium; and skin. Orthologous to human CTF2P (cardiotrophin 2, pseudogene). [provided by Alliance of Genome Resources, Apr 2022]