rs12721627

What is the rs12721627 variant?

rs12721627 is a SNP (single nucleotide polymorphism) in the ABCG2 (ATP Binding Cassette Subfamily G Member 2) gene. It belongs to the Drug Metabolism category and is part of the Detox & Medication Sensitivity biological cluster. ABCG2 encodes breast cancer resistance protein (BCRP), a broad-spectrum efflux transporter in gut, liver, and blood-brain barrier.

Biological role and pathway

This variant sits within the ABCG2 gene, which is involved in the drug efflux transport pathway. Genes within the Detox & Medication Sensitivity cluster work together to maintain balanced function across interconnected biological systems.

Variants in genes within this pathway may influence an individual's predisposition to altered function — particularly under conditions of physiological stress such as viral infection or prolonged illness.

Parent gene: ABCG2

rs12721627 is one of 3 known variants in the ABCG2 gene. To understand the full biological context of this variant, explore the parent gene page.

Conditions studied in relation to rs12721627

Research into ABCG2 variants including rs12721627 has explored associations with the following conditions. These are areas of scientific investigation and do not imply causation.

Genetic insights from DNA data

Consumer DNA files from 23andMe, AncestryDNA, and MyHeritage contain raw SNP data. When you upload your file to ChronicDNA, the analysis engine checks your genotype against a curated panel of 80+ genes selected for their relevance to Long COVID, ME/CFS, and connected biological pathways - some of which may include ABCG2 and the rs12721627 variant.

The report is educational - it explains which variants you carry, what the research says about them, and how they fit into the biological pathways most relevant to chronic illness. Results are presented in plain English with appropriate scientific context, no medical jargon, no scare tactics. All results should be discussed with a qualified healthcare provider.

Other variants in the ABCG2 gene

The following variants in ABCG2 are also studied in relation to chronic illness and may be analysed together for a more complete picture.

Frequently asked questions