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FOLR2 encodes folate receptor beta, a folate-binding protein expressed in particular cell types, including subsets of immune cells. It is distinct from the FOLR1 receptor and the SLC19A1 reduced folate carrier.

HLA-DQA1 contributes to an HLA-DQ protein that presents antigen fragments to CD4 T cells. HLA-DQ function depends on pairing with an HLA-DQB chain, so an isolated marker is not a complete HLA type.

HLA-DQA2 is part of the HLA class II region involved in immune recognition. It should not be treated as interchangeable with HLA-DQA1 or as a measurement of how well the immune system fights infections.

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.

VDR encodes the vitamin D receptor, which helps regulate gene activity in response to active vitamin D. A receptor variant does not by itself mean receptors are absent or that the blood vitamin D level is low.

C3 is the gene name for Complement C3. Learn what a specific result could mean and what to ask about it.

CCR3 is the gene name for C-C Motif Chemokine Receptor 3. Learn what a specific result could mean and what to ask about it.

Encodes cubilin, part of a receptor system involved in uptake of the intrinsic-factor–B12 complex.

Refers to part of the HLA immune-recognition region, rather than one gene. HLA typing requires more detail than a broad region label.

TPSAB1 is the gene name for Alpha Tryptase. Learn what a specific result could mean and what to ask about it.

A fast look at the genetic quirks I came across this week, from odd inherited traits to the ones that can seriously affect health. Clear, curious, and a little alarming.

A fast look at the genetic quirks I came across this week, from odd inherited traits to the ones that can seriously affect health. Clear, curious, and a little alarming.