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NCT03335761

InterStim® Amplitude Study

Completed NA Results posted Last updated 8 January 2021
What this trial tests

NA trial testing InterStim Therapy in Urinary Urge Incontinence in 97 participants. Completed in 6 November 2019.

Timeline
27 February 2018
Primary endpoint
6 November 2019
6 November 2019

Quick facts

Lead sponsorMedtronicNeuro
PhaseNA
StatusCompleted
Study typeINTERVENTIONAL
Allocationrandomized
Designparallel
Maskingsingle
Primary purposebasic science
Enrollment97
Start date27 February 2018
Primary completion6 November 2019
Estimated completion6 November 2019
Sites18 locations across France, Italy, Netherlands, Belgium, United Kingdom, Canada, United States

Drugs / interventions tested

Conditions studied

Sponsor

MedtronicNeuro — full company profile →

Who can join

18 and older, female only, with Urinary Urge Incontinence. Patients with the condition only — healthy volunteers not accepted.

Results — posted to ClinicalTrials.gov

Per-arm endpoint measurements with 95% confidence intervals where reported. Source: trial results section.

Change in Urinary Urge Incontinence (UUI) Episodes Per Day From Baseline to 12 Weeks. Primary · 12 weeks

Symptoms related to OAB were evaluated using paper voiding diaries. Subjects were trained to complete the urinary voiding diaries for 3-days.

UUI episodes per day at Baseline
GroupValue95% CI
Amplitude Setting #1 = 50% Sensory Threshold4.4± 2.9
Amplitude Setting #2 = 80% Sensory Threshold5.3± 3.1
Amplitude Setting #3 = Sensory Threshold5.1± 4.7
UUI episodes per day at 12 weeks
GroupValue95% CI
Amplitude Setting #1 = 50% Sensory Threshold1.4± 2.6
Amplitude Setting #2 = 80% Sensory Threshold2.4± 3.0
Amplitude Setting #3 = Sensory Threshold1.5± 2.3
Change in UUI episodes per day from baseline to 12 weeks
GroupValue95% CI
Amplitude Setting #1 = 50% Sensory Threshold-3± 2.6
Amplitude Setting #2 = 80% Sensory Threshold-2.9± 2.9
Amplitude Setting #3 = Sensory Threshold-3.6± 2.8
Change in QoL Using ICIQ-OAB QOL From Baseline to 12 Weeks. Secondary · 12 weeks

International Consultation on Incontinence Modular Questionnaire - Overactive Bladder Symptoms Quality of Life Questionnaire The questionnaire consists of 4 subscales and a single item on urinary symptom interference. The four subscales of Concern (7 items), Coping (8 items), Sleep (5 items), and Social (5 items) are measured on a scale from 0-100 using a range percentile transformation on the summed value from individual listed items. The Health-Related Quality of Life (HRQL) score is a calculated score with a range from 0 to 100 using a range percentile transformation on the summed value fr

Change in Coping from baseline to 12 weeks
GroupValue95% CI
Amplitude Setting #1 = 50% Sensory Threshold44.4± 30.4
Amplitude Setting #2 = 80% Sensory Threshold41.0± 26.3
Amplitude Setting #3 = Sensory Threshold39.4± 27.9
Change in Concern from baseline to 12 weeks
GroupValue95% CI
Amplitude Setting #1 = 50% Sensory Threshold48.2± 28.9
Amplitude Setting #2 = 80% Sensory Threshold50.3± 17
Amplitude Setting #3 = Sensory Threshold49.9± 30.2
Change in Sleep from baseline to 12 weeks
GroupValue95% CI
Amplitude Setting #1 = 50% Sensory Threshold31.4± 26.6
Amplitude Setting #2 = 80% Sensory Threshold37.8± 22.7
Amplitude Setting #3 = Sensory Threshold32.0± 31.6
Change in Social from baseline to 12 weeks
GroupValue95% CI
Amplitude Setting #1 = 50% Sensory Threshold20.9± 25.0
Amplitude Setting #2 = 80% Sensory Threshold28.6± 17
Amplitude Setting #3 = Sensory Threshold20.6± 19.9
Change in HRQL from baseline to 12 weeks
GroupValue95% CI
Amplitude Setting #1 = 50% Sensory Threshold38.1± 24.4
Amplitude Setting #2 = 80% Sensory Threshold40.5± 16.7
Amplitude Setting #3 = Sensory Threshold37.1± 23.4
Change in Interference from baseline to 12 weeks
GroupValue95% CI
Amplitude Setting #1 = 50% Sensory Threshold-5.2± 3.3
Amplitude Setting #2 = 80% Sensory Threshold-4.7± 3.0
Amplitude Setting #3 = Sensory Threshold-4.7± 3.5

Adverse events — posted to ClinicalTrials.gov

Time frame: From Post-Neurostimulator device implant to 12 weeks follow-up visit. Reporting threshold: 0%. Adverse-event reports describe events observed during the trial — not all are caused by the drug.

Amplitude Setting #1 = 50% Sensory Threshold
Serious: 3/19 (16%)
Deaths: 0/19
Amplitude Setting #2 = 80% Sensory Threshold
Serious: 1/14 (7%)
Deaths: 0/14
Amplitude Setting #3 = Sensory Threshold
Serious: 3/15 (20%)
Deaths: 0/15

Serious adverse events (8 terms)

ReactionSystemAmplitude Setting #1 = 50%…Amplitude Setting #2 = 80%…Amplitude Setting #3 = Sen…
DyspnoeaRespiratory, thoracic and mediastinal disorders
SepsisInfections and infestations
Suicide attemptPsychiatric disorders
Cerebrovascular accidentNervous system disorders
MigraineNervous system disorders
Gastric ulcer haemorrhageGastrointestinal disorders
Umbilical herniaGastrointestinal disorders
Pain in extremityMusculoskeletal and connective tissue disorders
Other adverse events (5 terms — click to expand)

ReactionSystemAmplitude Setting #1 = 50%…Amplitude Setting #2 = 80%…Amplitude Setting #3 = Sen…
ParaesthesiaNervous system disorders
Medical device site painGeneral disorders
PruritusSkin and subcutaneous tissue disorders
Dermatitis contactSkin and subcutaneous tissue disorders
PainGeneral disorders

Most-reported serious reactions: Dyspnoea, Sepsis, Suicide attempt, Cerebrovascular accident, Migraine, Gastric ulcer haemorrhage, Umbilical hernia, Pain in extremity.

Data from ClinicalTrials.gov NCT03335761 adverse events section.

Sponsor's own description

This feasibility study will explore the effects of three different InterStim amplitude settings on overactive bladder symptoms (OAB).

Publications & conference data

1 peer-reviewed publication reference this trial (live from Europe PMC):

  1. A prospective, multicenter, international study to explore the effect of three different amplitude settings in female subjects with urinary urge incontinence receiving interstim therapy.
    Elterman D, Ehlert M, De Ridder D, McCrery R, et al · · 2021 · cited 8× · PMID 33645864 · DOI 10.1002/nau.24648

Verify or expand the search:

Other recruiting trials for Urinary Urge Incontinence

Currently open trials in the same condition.

Other MedtronicNeuro trials

Trials by the same sponsor.

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