NCIt definition : Human FAT4 wild-type allele is located in the vicinity of 4q28.1 and is approximately
177 kb in length. This allele, which encodes protocadherin Fat 4 protein, is involved
in cell polarity. Mutation of the gene is associated with Hennekam lymphangiectasia-lymphedema
syndrome 2 and Van Maldergem syndrome 2.;