Trait

Sinoatrial block

Disturbance in the atrial activation that is caused by transient failure of impulse conduction from the sinoatrial node to the cardiac atria.

HPO HP:0012723

Body system: Abnormality of the cardiovascular system

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3 genes linked to Sinoatrial block

Changes in these genes cause rare conditions in which Sinoatrial block 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.

Gene	How often it is seen	Conditions
POPDC2popeye domain cAMP effector 2	Often (30–79%)	In 1 condition
GNB2G protein subunit beta 2	Sometimes (5–29%)	In 1 condition
LMNAlamin A/C	Sometimes (5–29%)	In 1 condition

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

Abnormal electrophysiology of sinoatrial node origin Heart block

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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