[Bioethics on DNA diagnosis].

Through the applications of medical genetic knowledges, early diagnosis, neonatal screening, prenatal diagnosis followed by selective abortion, carrier detection and genetic counselling has become more effective. Since 1960, we performed over 3,500 cases with its followup study in Kyoto, Aichi, and Fukui, according to guidelines emphasizing non-directive counselling, informed consent, autonomous decision-making and confidentiality. New bioethical problems using DNA diagnosis has been arisen on justification of presymptomatic diagnosis of trinucleotide repeat diseases, carrier detection of thalassemia as well as possibility for genetic discrimination, susceptibility and testing. We should provide knowledges of science and technology with bioethical considerations, in order to protect the human genome and right as well as biosphere, as shown in the activities of IBC, UNESCO and MURS.