“…The clinical spectrum ranges from euthyroid to mild or severe hypothyroidism. During the last decades, two hundred twenty-seven variants in the human TG gene have been reported associated with congenital goiter and also endemic and nonendemic goiter: 26 splice site variants (19 in the donor splice site and 7 in the acceptor splice site), 42 nonsense variants, 130 missense variants (18 located at in the wild type cysteine residues, 7 originating new cysteine residues, 27 in the ChEL-homology domain and 78 located along the remaining TG monomer), 5 duplications (4 singles and 1 multiple), 2 insertion (1 multiple and 1 involving a large number of nucleotides), 21 deletions (13 singles, 4 multiples and 4 involving a large number of nucleotides) and 1 imperfect DNA inversion [Abdul-Hassan et al, 2013;Agretti et J o u r n a l P r e -p r o o f Alzahrani et al, 2006;Baryshev et al, 2004;Bruellman et al, 2020aBruellman et al, , 2020bBrust et al, 2011;Cangul et al, 2014;Caputo et al, 2007aCaputo et al, , 2007bCaron et al, 2003;Chen et al, 2018;Citterio et al, 2011Citterio et al, , 2013aCitterio et al, , 2013bCitterio et al, , 2015de Filippis et al, 2017;Fan et al, 2017;Fu et al, 2016aFu et al, , 2016bGutnisky et al, 2004;Heo et al, 2019;Hermanns et al, 2013;Hishinuma et al, 1999Hishinuma et al, , 2005Hishinuma et al, , 2006Hu et al, 2016;Ieiri et al, 1991;Jiang et al, 2016;Kahara et al, 2012;Kanou et al, 2007;Kim et al, 2008;Kitanaka et al, 2006;Liu et al, 2012;Lof et al, 2016;…”