STRING 9.05 
NTF4 [ENSP00000301411]
neurotrophin 4; Target-derived survival factor for peripheral sensory sympathetic neurons
NGFR [ENSP00000172229]
nerve growth factor receptor (TNFR superfamily, member 16); Low affinity receptor which can bind to NGF, BDNF, NT-3, and NT-4. Can mediate cell survival as well as cell death of neural cells
Evidence suggesting a functional link:
Neighborhood in the Genome:  
none / insignificant.
Gene Fusions:  
none / insignificant.
Cooccurence Across Genomes:  
none / insignificant.
none / insignificant.
Experimental/Biochemical Data:   yes (score 0.621).  
Association in Curated Databases:   yes (score 0.900).  
Co-Mentioned in PubMed Abstracts:   yes (score 0.752). In addition, putative homologs are mentioned together in other species (score 0.065).  
Combined Score:
Evidence for specific actions:
Binding:yes (score: 0.907)