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GCLM helps regulate one of the steps your body uses to make glutathione.

GDF5 encodes growth differentiation factor 5, a signaling protein involved in skeletal development, joint formation and cartilage biology. Its name does not mean a SNP measures the ability to build muscle.

GGH encodes gamma-glutamyl hydrolase, which removes glutamate residues from folate compounds. This affects folate handling and helps explain why folate metabolism includes retention and processing as well as intake.

GPX1 helps cells use glutathione to handle peroxides.

GPX3 helps use glutathione in peroxide defense outside cells.

GPX4 helps protect cell membranes from certain peroxides.

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

HFE helps regulate iron absorption through signaling that influences hepcidin. The commonly discussed C282Y and H63D variants correspond to rs1800562 and rs1799945. Their implications depend on the combination present and clinical findings.

KIT encodes a receptor tyrosine kinase that responds to stem cell factor. It participates in blood-cell development and mast-cell biology, making the exact variant and testing context especially important.

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.

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

The homocysteine chapters include MTHFD1L in the wider folate-related genetic map.