Abstract: The purpose of this paper is to attempt to classify the practice of international bodies that is significant for understanding the legal features of the use of genetic technologies as well as to provide a brief overview of some of the ECtHR cases that are key to identifying the general trends in human rights protection in the use of genetic technologies. The author provides an analysis of the ECtHR cases, which reveal some aspects of informed consent in medical activities and also addresses the more specific issue of prenatal genetic testing. The conclusion is drawn that it is advisable to classify cases of international bodies on the application of genetic technologies into two main categories: cases concerning particular issues of the application of genetic technologies and cases containing fundamental legal positions on the application of medical technologies, including genetic ones. It is necessary to consider both categories of cases in order to clarify the official interpretation of international norms and principles for the protection of human rights in the area at issue. For example, the analysis of practice in a broad category of medical cases provides insight into how the ECtHR discusses the principle of informed consent through the interpretation of the right to privacy enshrined in article 8 of the ECHR. However, a narrow focus on cases directly arising from the application of genetic technologies allows the inference of general requirements for legal regulation and human rights in subject areas such as genetic testing.