rs1047303

What is the rs1047303 variant?

rs1047303 is a SNP (single nucleotide polymorphism) in the HSD3B1 (Hydroxy-Delta-5-Steroid Dehydrogenase 3 Beta And Steroid Delta-Isomerase 1) gene. It belongs to the Hormonal category and is part of the Hormonal Regulation biological cluster. HSD3B1 encodes an enzyme essential for adrenal and gonadal steroid synthesis, converting pregnenolone to progesterone.

Biological role and pathway

This variant sits within the HSD3B1 gene, which is involved in the adrenal steroid synthesis pathway. Genes within the Hormonal Regulation 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: HSD3B1

rs1047303 is one of 1 known variant in the HSD3B1 gene. To understand the full biological context of this variant, explore the parent gene page.

Conditions studied in relation to rs1047303

Research into HSD3B1 variants including rs1047303 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 HSD3B1 and the rs1047303 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.

Frequently asked questions