Rostamzadeh et al. (2015) observed up-regulation of FCRL2 mRNA expression not only in GD but also in Hashimoto thyroiditis (HT) patients compared to healthy individuals, as well as the increased FCRL4 mRNA expression in GD patients (similarly to our results) but not in HT patients [11]. The gene discussed is FCRL4; the disease is hematocrit.