• Turnaround time:
    10–21 calendar days (14 days on average)
  • Preferred specimen:
    3mL whole blood in a purple-top tube
  • Alternate specimens:
    DNA or saliva/assisted saliva
  • Sample requirements
  • Request a sample kit



K2p3.1; OAT1; PPH4; TASK; TASK-1; TBAK1

Associated disorders

The KCNK3 gene currently has no well-established disease association; however, there is preliminary evidence supporting a correlation with autosomal dominant pulmonary arterial hypertension (PAH).

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Invitae tests that include this gene:

KCNK3 variants are associated with an unknown percentage of clinical cases of pulmonary arterial hypertension.

Potassium channels are integral proteins of the cell membrane that are involved in several biological functions. The KCNK3 gene, also known as TASK1, encodes the potassium channel, two pore domain subfamily K, member 3 protein, which is involved in maintaining and stabilizing the action potential in many cell types.

Assay and technical information

Invitae is a College of American Pathologists (CAP)-accredited and Clinical Laboratory Improvement Amendments (CLIA)-certified clinical diagnostic laboratory performing full-gene sequencing and deletion/duplication analysis using next-generation sequencing technology (NGS).

Our sequence analysis covers clinically important regions of each gene, including coding exons, +/- 10 base pairs of adjacent intronic sequence in the transcript listed below. In addition, analysis covers the select non-coding variants specifically defined in the table below. Any variants that fall outside these regions are not analyzed. Any specific limitations in the analysis of these genes are also listed in the table below.

Our analysis detects most intragenic deletions and duplications at single exon resolution. However, in rare situations, single-exon copy number events may not be analyzed due to inherent sequence properties or isolated reduction in data quality. If you are requesting the detection of a specific single-exon copy number variation, please contact Client Services before placing your order.

Gene Transcript reference Sequencing analysis Deletion/Duplication analysis
KCNK3 NM_002246.2