The gene msrP/K07147 (a methionine sulfoxide reductase) within the peripheral blood was uniquely related to a higher risk of HE (+37%), while within the faeces, the genes pdhD/K00382 (+38%), sugE/K11741 (+36%), and ssb/K03111 (+45%) were related to a higher risk of HE (Table 3). This evidence concerns the gene SSB and hereditary elliptocytosis.