BTK Gene

What is the BTK gene?

BTK encodes bruton tyrosine kinase, a protein involved in B cell signaling. It belongs to the Adaptive Immunity category and is part of the Adaptive Immunity biological cluster. BTK is a non-receptor tyrosine kinase essential for B cell receptor signal transduction and mast cell/macrophage activation. It is a therapeutic target for B cell malignancies and autoimmune diseases (ibrutinib).

Biological role and pathway

BTK is involved in the B cell signaling pathway, which plays a central role in regulating physiological processes relevant to immune defence, cellular energy, and systemic homeostasis. Genes within the Adaptive Immunity 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 in these systems — particularly under conditions of physiological stress such as viral infection or prolonged illness.

Known genetic variants

The following variants (SNPs) in the BTK gene have been studied in relation to adaptive immunity and chronic illness. Each variant represents a single nucleotide position where individuals may carry different alleles.

• rs1058705— BTK variant
• rs33929439— BTK variant
• rs13306575— BTK variant

Conditions studied in relation to BTK

Research into BTK variants has explored associations with the following conditions. These are areas of scientific investigation and do not imply that BTK causes or treats any condition.

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 BTK and related genes in the adaptive immunity pathway.

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.

Related genes in the Adaptive Immunity pathway

BTK does not act in isolation. The following genes are functionally related and may be analysed together for a more complete picture of your genetic predispositions.

Frequently asked questions