The purpose of the SPYRAL SWYFT sub-study is to evaluate whether renal denervation with the Symplicity Spyral system performed in the main and first order branch renal arteries yields a shorter procedure time and is as effective in reducing blood pressure than the procedural approach used in the SPYRAL HTN-ON MED and SPYRAL PIVOTAL - SPYRAL HTN-OFF MED clinical studies in an uncontrolled hypertensive population.

SPYRAL SWYFT will evaluate the long-term safety, efficacy, and durability of the Symplicity Spyral system to determine whether renal denervation performed in the main and first order branch renal arteries yields a shorter procedure time and is as effective in reducing blood pressure than the procedural approach used in the SPYRAL HTN-ON MED and SPYRAL PIVOTAL - SPYRAL HTN-OFF MED clinical studies (where all accessible renal arterial vessels between 3 and 8 mm in diameter including accessory, branch and main renal arteries (outside the kidney parenchyma) were targeted for ablation).

SPYRAL SWYFT study is conducted under the overarching SPYRAL AFFIRM protocol (NCT05198674), focused on EU and APAC regions.

Inclusion Criteria:

1. Individual is diagnosed with hypertension and has a baseline office systolic blood pressure ≥140 mmHg
2. Individual has a baseline office diastolic blood pressure ≥ 90 mmHg
3. Individual has an average systolic baseline home blood pressure ≥135 mmHg (with ≥7 days of valid pre-procedure measurements)
4. Individual has a valid 24-hour Ambulatory Blood Pressure Measurement at baseline

Exclusion Criteria:

1. Individual lacks appropriate renal artery anatomy
2. Individual has undergone prior renal denervation
3. Individual has a documented condition that would prohibit or interfere with ability to obtain an accurate blood pressure measurement
4. Individual requires chronic oxygen support or mechanical ventilation other than nocturnal respiratory support for sleep apnea
5. Individual has an estimated glomerular filtration rate (eGFR) of <45 mL/min/1.73m2
6. Individual has one or more episode(s) of orthostatic hypotension
7. Individual is pregnant, nursing or planning to become pregnant
8. Individual has documented primary pulmonary hypertension
9. Individual has documented type 1 diabetes mellitus or poorly-controlled type 2 diabetes mellitus with glycosylated hemoglobin greater than 8.0%

There is no plan to share individual participant data. Aggregate results will be made publicly available via publications and conference presentations.