“…This literature review suggests that family genetic testing used in combination with newborn screening or screening of at-risk populations, such as patients on renal replacement therapy or those with hypertrophic cardiomyopathy (HCM), can lead to the identification of several additional family members with Fabry disease (Table 1), with one screening study among 150 patients with HCM reporting an additional 99 relatives diagnosed with the disease from 21 probands (Azevedo et al, 2020). Variable prevalence of Fabry disease was found using newborn screening or screening of at-risk populations, with additional affected relatives disclosed using family genetic testing after identification of index cases (Adalsteinsdottir et al, 2017;Azevedo et al, 2020;Barman et al, 2020;Chinen et al, 2017;De Brabander et al, 2013;Feriozzi et al, 2007;Hagège et al, 2011;Liao et al, 2018;Lin et al, 2018;Lv et al, 2009;Maron et al, 2018;Merta et al, 2007;Okur et al, 2013;Russo et al, 2018;Silva et al, 2016;Spada et al, 2006;Terryn et al, 2008;Turkmen et al, 2016;Veloso et al, 2018). Family screening for rare genetic diseases can be highly effective, but the logistics and economics of its implementation are complex.…”