Skip to content
Use your HSA or FSA funds

Trait

Shortened QT interval

Decreased time between the start of the Q wave and the end of the T wave as measured by the electrocardiogram (EKG).

HPO HP:0012232

Summary

Body system
Abnormality of the cardiovascular system

11 genes linked to Shortened QT interval

Changes in these genes cause rare conditions in which Shortened QT interval 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.

GeneHow often it is seenConditions
CACNA2D1calcium voltage-gated channel auxiliary subunit alpha2delta 1AlwaysIn 1 condition
KCNH2potassium voltage-gated channel subfamily H member 2AlwaysIn 2 conditions
KCNJ2potassium inwardly rectifying channel subfamily J member 2AlwaysIn 2 conditions
KCNQ1potassium voltage-gated channel subfamily Q member 1AlwaysIn 2 conditions
SLC4A3solute carrier family 4 member 3AlwaysIn 2 conditions
CDC73cell division cycle 73Often (30–79%)In 2 conditions
CDKN1Bcyclin dependent kinase inhibitor 1BSometimes (5–29%)In 1 condition
CDKN2Bcyclin dependent kinase inhibitor 2BSometimes (5–29%)In 1 condition
MEN1menin 1Sometimes (5–29%)In 1 condition
CACNA1Ccalcium voltage-gated channel subunit alpha1 CNot recordedIn 1 condition
CACNB2calcium voltage-gated channel auxiliary subunit beta 2Not recordedIn 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 QT interval

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 2026.10.17-8666dff2.

One test. A lifetime of answers.

From $449Free shipping · Results in 6–8 weeks

Get my Genome Test