Article tag

variants

Articles about variants from the Gene Inspector Pro blog.

Bright scientific illustration of COMT variant review with catecholamine pathway markers and evidence panels.

COMT gene variants and catecholamines

COMT helps metabolize catecholamines and catechol estrogens. Val158Met changes enzyme activity and has reported trait associations, but it is not a deterministic personality label.

Illustration of MTHFR variant review with DNA markers, folate pathway elements, lab context, and evidence cards.

MTHFR C677T and A1298C: what these variants mean

C677T has a measurable effect on MTHFR enzyme activity. A1298C alone has a less clear effect, and neither variant is a diagnosis.

One large anonymous donor icon and many smaller anonymous donor icons contributing DNA streams to a mosaic reference genome.

A short history of the human reference genome

The original reference genome was a patchwork: about 70% from one anonymous donor and the rest from 19 other anonymous donors.

Abstract variant review workspace with allele frequency bars, population dots, and evidence cards.

Allele frequency and MAF in variant review

Allele frequency and MAF help you judge whether a variant is common or rare. They do not decide whether the variant matters by themselves.

RNA exon blocks joined in alternate paths that produce different protein shapes.

Splice variants and protein changes

Splice variants can change how exons are included in RNA transcripts, which can alter the resulting protein.

Abstract variant table with a few highlighted review rows in a bright genetics workspace.

Highlighted variants

Highlighted variants keep selected mutations visible on the Gene page, including variants that are not detected in the uploaded DNA file.

Protein structure with one highlighted amino acid substitution in a bright molecular workspace.

What is a missense variant?

A missense variant changes a DNA letter in a way that swaps one amino acid in the resulting protein.