Abstract
The Japanese Society for Familial Tumors has started authorization system for “FCC” since 2012. The role of “Familial tumor counselor / coordinator :FCC” in hereditary tumor practice is defined as “Spread of knowledge and medical care improvements in hereditary tumors, as well as to develop human resources who contributes in the fields of education”. Especially, “Familial tumor counselor” is required to be as a medical geneticist / genetic counselor, and FCC should secure professionality in hereditary tumor practice. I discussed about the newly determined role of FCC in Japan, through my practical experience as FCC.