Direct-to-consumer (DTC) genetic testing has been a major ethical controversy related to clinical utility, the availability of pre- and post-genetic counseling, privacy concerns, and the risk of discrimination and stigmatization. The development of direct-to-consumer genetic testing cannot leave aside some considerations on how the samples are managed once the analyses have been completed and the customer has received a response. The possibility that these samples are maintained by the structure for future research uses, explains the definition, which has been proposed in the literature, of these structures such as private genetic biobanks. The most relevant aspects that may impact ethical aspects, allowing a comparison between the public and private dimensions of genetic biobanks, are mainly transparency and participant/donor trust. The article aims to analyze the main line of ethical debate related to the mentioned practices and to explore whether market-based and consumer rights regarding DTC genetic testing can be counterbalanced by healthcare system developments based on policies that encourage the donation of samples in the context of public biobanks. A platform for dialogue, both technical-scientific and ethical, is indispensable between the public sector, the private sector and citizens to truly maximize both transparency and public trust in both contexts.
Keywords: DTC genetic testing; genomic data sharing; private biobank; public biobank; public trust.