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GSTO1 belongs to the omega family of glutathione S-transferases. These enzymes participate in redox chemistry, with roles that differ from the better-known GSTM1 and GSTP1 pathways.

GSTP1 helps your body use glutathione to process some compounds.

GSTT1 helps your body use glutathione to process some compounds.

HDC is the gene name for Histidine Decarboxylase. Learn what a specific result could mean and what to ask about it.

HLA-DQA1 contributes to an HLA-DQ protein that presents antigen fragments to CD4 T cells. HLA-DQ function depends on pairing with an HLA-DQB chain, so an isolated marker is not a complete HLA type.

HLA-DQA2 is part of the HLA class II region involved in immune recognition. It should not be treated as interchangeable with HLA-DQA1 or as a measurement of how well the immune system fights infections.

MAOA helps break down some chemical messengers. A gene result cannot predict a mood or behavior.

MAOB encodes monoamine oxidase B, an enzyme involved in breaking down monoamine compounds, including dopamine. It does not simply build dopamine, and a DNA marker is not a neurotransmitter measurement.

MMP3 encodes matrix metalloproteinase 3, an enzyme involved in breaking down components of the extracellular matrix. Controlled remodeling is part of repair, while excess activity can accompany inflammatory tissue damage.

MTHFD1 helps move folate between forms used for different jobs in the body.

Makes an enzyme that helps produce a form of folate used in the processing of homocysteine. Common variants are different from rare variants that cause severe MTHFR deficiency.

Makes the methionine synthase enzyme, which uses vitamin B12 in the conversion of homocysteine to methionine.