SLC30A2 and zinc deficiency, transient neonatal: They found that 4 out of these 31 SNPs had significantly low levels of zinc transport, which were similar to ZnT2 mutations that caused TNZD.21 However, data about the prevalence of SLC30A2/ZnT2 mutations in the general population of healthy individuals from different ethnicities, both conspicuous LoF mutations (eg premature translation termination, frameshift and impaired splicing) and missense mutations is lacking.