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Trial · NCT02308748

Ability of Late Sodium or Calcium Current Block to Balance the ECG Effects of Potassium Current Block

NCT02308748, Phase 1, Completed, Food and Drug Administration (FDA); results first posted 2016-06-08

3 sourcestrials-2026-11-12-0.5.0

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ConductScience Library. Ability of Late Sodium or Calcium Current Block to Balance the ECG Effects of Potassium Current Block. Trials, record NCT02308748. Release trials-2026-11-12-0.5.0, 12 Nov 2026. https://conductscience.org/library/trials/NCT02308748

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Trial

As registered on ClinicalTrials.gov, in the graph's capture of the registry.

Title
Ability of Late Sodium or Calcium Current Block to Balance the ECG Effects of Potassium Current Block
NCT number
NCT02308748
Status
Completed
Phases
Phase 1
Enrollment
22 participants, actual
Lead sponsor
Food and Drug Administration (FDA)
Conditions
Drug-induced QT Prolongation, Pharmacokinetics, Pharmacodynamics
Interventions
Dofetilide, Mexiletine, Lidocaine, Moxifloxacin, Diltiazem, Placebo
First posted
2014-12-04
Last updated
2016-06-08
Results first posted
2016-06-08

Source ClinicalTrials.gov

Registered outcomes2

Each outcome the trial registered, primary first, in ClinicalTrials.gov's words.

ListOutcomeTime frameDescription
Primary
Change in Placebo Corrected Change From Baseline QTc and J-Tpeakc Intervals on the ECG Measured in Milliseconds When Dofetilide is Administered With Mexiletine or Lidocaine Compared to When Dofetilide is Administered Alone at Evening Dose on Treatment Day
5 weeksAfter 3rd dose of mexiletine or lidocaine (evening dose) on treatment day when combined with dofetilide to evening dose on dofetilide alone day.
Secondary
Change in Placebo Corrected Change From Baseline QTc Interval on the ECG Measured in Milliseconds When Moxifloxacin is Administered With Diltiazem at the Evening Dose Compared to When Moxifloxacin is Administered Alone at Afternoon Dose on Treatment Day.
5 weeksEvening dose (moxifloxacin+diltiazem) versus afternoon dose (diltiazem alone).

Outcomes2

Each outcome the trial posted results for, in ClinicalTrials.gov's words.

TypeOutcomeTime framePopulationUnitsMeasured as
PRIMARY
Change in Placebo Corrected Change From Baseline QTc and J-Tpeakc Intervals on the ECG Measured in Milliseconds When Dofetilide is Administered With Mexiletine or Lidocaine Compared to When Dofetilide is Administered Alone at Evening Dose on Treatment Day
5 weeksAll study participants that completed placebo and dofetilide alone as well as dofetilide + mexiletine and/or dofetilide + lidocainemsMEAN
SECONDARY
Change in Placebo Corrected Change From Baseline QTc Interval on the ECG Measured in Milliseconds When Moxifloxacin is Administered With Diltiazem at the Evening Dose Compared to When Moxifloxacin is Administered Alone at Afternoon Dose on Treatment Day.
5 weeksAll study participants that completed placebo, moxifloxacin and moxifloxacin + diltiazemmsMEAN

Results by group8

Each measurement the trial posted, group by group, in the words and numbers it posted.

OutcomeGroupCategoryValueSpreadUnits
Change in Placebo Corrected Change From Baseline QTc and J-Tpeakc Intervals on the ECG Measured in Milliseconds When Dofetilide is Administered With Mexiletine or Lidocaine Compared to When Dofetilide is Administered Alone at Evening Dose on Treatment Day
Dofetilide AlonePlacebo corrected change from baseline in QTc37.995% Confidence Interval 32.6 to 43.1ms
Change in Placebo Corrected Change From Baseline QTc and J-Tpeakc Intervals on the ECG Measured in Milliseconds When Dofetilide is Administered With Mexiletine or Lidocaine Compared to When Dofetilide is Administered Alone at Evening Dose on Treatment Day
Dofetilide + MexiletinePlacebo corrected change from baseline in QTc20.495% Confidence Interval 15.1 to 25.6ms
Change in Placebo Corrected Change From Baseline QTc and J-Tpeakc Intervals on the ECG Measured in Milliseconds When Dofetilide is Administered With Mexiletine or Lidocaine Compared to When Dofetilide is Administered Alone at Evening Dose on Treatment Day
Dofetilide + LidocainePlacebo corrected change from baseline in QTc1895% Confidence Interval 12.7 to 23.3ms
Change in Placebo Corrected Change From Baseline QTc and J-Tpeakc Intervals on the ECG Measured in Milliseconds When Dofetilide is Administered With Mexiletine or Lidocaine Compared to When Dofetilide is Administered Alone at Evening Dose on Treatment Day
Dofetilide AlonePlacebo corrected change from baseline in J-Tpeakc24.095% Confidence Interval 19.2 to 28.9ms
Change in Placebo Corrected Change From Baseline QTc and J-Tpeakc Intervals on the ECG Measured in Milliseconds When Dofetilide is Administered With Mexiletine or Lidocaine Compared to When Dofetilide is Administered Alone at Evening Dose on Treatment Day
Dofetilide + MexiletinePlacebo corrected change from baseline in J-Tpeakc0.895% Confidence Interval -4.0 to 5.6ms
Change in Placebo Corrected Change From Baseline QTc and J-Tpeakc Intervals on the ECG Measured in Milliseconds When Dofetilide is Administered With Mexiletine or Lidocaine Compared to When Dofetilide is Administered Alone at Evening Dose on Treatment Day
Dofetilide + LidocainePlacebo corrected change from baseline in J-Tpeakc3.595% Confidence Interval -1.4 to 8.4ms
Change in Placebo Corrected Change From Baseline QTc Interval on the ECG Measured in Milliseconds When Moxifloxacin is Administered With Diltiazem at the Evening Dose Compared to When Moxifloxacin is Administered Alone at Afternoon Dose on Treatment Day.
Moxifloxacin Alone29.995% Confidence Interval 24.6 to 35.2ms
Change in Placebo Corrected Change From Baseline QTc Interval on the ECG Measured in Milliseconds When Moxifloxacin is Administered With Diltiazem at the Evening Dose Compared to When Moxifloxacin is Administered Alone at Afternoon Dose on Treatment Day.
Moxifloxacin + Diltiazem31.395% Confidence Interval 26.0 to 36.6ms

Participant flow150

How many started, completed or left each group, period by period.

PeriodMilestoneGroupParticipantsUnits counted
Period 1STARTEDA-D-E-C-B2
Period 1STARTEDB-C-E-D-A2
Period 1STARTEDC-D-B-A-E2
Period 1STARTEDD-C-A-B-E2
Period 1STARTEDE-A-B-D-C2
Period 1STARTEDD-A-C-E-B3
Period 1STARTEDE-B-A-C-D2
Period 1STARTEDA-E-D-B-C2
Period 1STARTEDB-E-C-A-D2
Period 1STARTEDC-B-D-E-A3

Adverse events15

Each adverse event the trial posted, group by group: the participants affected out of those at risk.

TypeEventOrgan systemGroupAffectedAt riskEvents
otherDizzinesNervous system disordersDofetilide1201
otherDizzinesNervous system disordersDofetilide + Lidocaine1191
otherDizzinesNervous system disordersDofetilide + Mexiletine6216
otherDizzinesNervous system disordersMoxifloxacin + Diltiazem2202
otherDizzinesNervous system disordersPlacebo1201
otherNauseaGastrointestinal disordersDofetilide1201
otherNauseaGastrointestinal disordersDofetilide + Lidocaine019
otherNauseaGastrointestinal disordersDofetilide + Mexiletine4214
otherNauseaGastrointestinal disordersMoxifloxacin + Diltiazem3203
otherNauseaGastrointestinal disordersPlacebo2202

Adverse event totals15

The totals the trial posted for each group.

TotalGroupAffectedAt risk
Total, all-cause mortalityDofetilide
Total, all-cause mortalityDofetilide + Lidocaine
Total, all-cause mortalityDofetilide + Mexiletine
Total, all-cause mortalityMoxifloxacin + Diltiazem
Total, all-cause mortalityPlacebo
Total, other adverse eventsDofetilide320
Total, other adverse eventsDofetilide + Lidocaine119
Total, other adverse eventsDofetilide + Mexiletine1121
Total, other adverse eventsMoxifloxacin + Diltiazem620
Total, other adverse eventsPlacebo320

Papers3

The papers the trial lists on ClinicalTrials.gov.

PMIDListed asSource
26259627RESULTPubMed
28036330DERIVEDPubMed
28036334DERIVEDPubMed

Grants0

The grants NIH RePORTER links to the trial, newest funded first: NIH's, and some of AHRQ's, CDC's, FDA's and VA's. Each shows its title, principal investigators, organization and funder in its newest year.

None in this release.

Trial comparisons0

Comparisons of the trial's two groups, calculated by ConductScience from the counts it posted.

None in this release.

Tests0

The ConductCognition tests this trial's registered outcomes name, as ScienceGraph matched them in trial-tests-2026-11-12-0.2.1.

None in this release.

Data dates

The day each source was copied for this release.

ClinicalTrials.gov
2026-11-12
ClinicalTrials.gov
Results, from AACT
2026-03-23
AACT
NIH grant links
2026-11-13
NIH RePORTER

Sources 3

  • ClinicalTrials.gov's posted results, through CTTI's AACTFreely available. Acknowledgement requested
  • ClinicalTrials.govNo license stated
  • NIH RePORTER's clinical studies and project filesPublic domain
Each source's terms
  • ClinicalTrials.gov's posted results, through CTTI's AACTClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299
  • ClinicalTrials.govnone stated
  • NIH RePORTER's clinical studies and project filesPublic domain (NIH RePORTER)

ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions.

For software

Read this trial from software.

The record and each of its lists are JSON, twenty rows a page. No key.

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