The remaining one in the gene SLC6A19, the c.1017-4G>A (rs35329108), was in homozygosity (the two parents showed it in heterozygosity) and is potentially associated with iminoglycinuria/hyperglycinuria (autosomal recessive pathologies involving a defective renal tubular reabsorption of glycine, proline and hydroxyproline) when combined with mutations in genes encoding other SLC amino acid transporters [61]. Here, SLC6A19 is linked to iminoglycinuria.