Trait
Absent circulating T cells
Absence of detectable circulating T cells, commonly characterized as CD3+ lymphocytes, in the blood. These may include both TCR alpha/beta and gamma/delta T cells. Usually, less than 50 T cells per microlitre is considered to be an absence.
Reference genomeGRCh38hg38
Positions on gene and variant pages follow this choice, in this browser.
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Get my Genome Test4 genes linked to Absent circulating T cells
Changes in these genes cause rare conditions in which Absent circulating T cells is seen. Most people with this trait have none of those conditions, and a gene on this list says nothing about anyone's own genome.
How often is among people with one of the gene's conditions, the most often across them, as the Human Phenotype Ontology records it. These pages describe traits and the research behind them; they are not a diagnosis, and a doctor or genetic counsellor is the person to ask about symptoms.
Broader traits
Where this comes from
- The Human Phenotype Ontology, release 2026-09-01: the trait, its names, its definition and the genes linked to it. Find out more at hpo.jax.org.
- Data release 2026.10.16-c6eea6bf.
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