ABCG2 and Huntington disease: “Pentose and glucoronate interconversions,” “cationic antimicrobial peptide (CAMP) resistance,” “ABC transporters,” “peroxisome,” “sulfur relay system,” “mineral absorption,” “glyoxylate and dicarboxylate metabolism,” and “porphyrin metabolism” were the only eight pathways significantly more frequent in the cecal microbiome of GNX females, while interesting pathways like “pathways in cancer,” “Huntington disease,” and “GABAergic synapse” were significantly expanded in the cecal microbiome of GNX males (Fig. S11).