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NCT04233034 · OUTCOME

CGM Coefficient of Variation

Hybrid Closed Loop Therapy and Verapamil for Beta Cell Preservation in New Onset Type 1 Diabetes · Source last updated 2024-11-27

Results reported by the registry submitting party. Population, time horizon, units and missing values must be read together.

Measure
MEAN
Unit
Coefficient of Variation Percentage
Interval / dispersion
Standard Deviation
Time frame
6, 13, 26, 39 weeks and 52 weeks

What was measured

Coefficient of variation between treatment groups. Calculated as the standard deviation of CGM glucose values divided by the mean of CGM glucose values.

Analysis population: 1 participant in Non-HCL+Placebo group dropped at baseline and was not analyzed.

Groups in this outcome

HCL and Intensive Management

Participants assigned to HCL group will initially be randomly assigned 1:1 to use either the Tandem t:slim X2 with Control-IQ technology or a Medtronic HCL system (Medtronic 670G 4.0 AHCL (prior to protocol version 5.0) or Medtronic 780G (starting with protocol version 5.0)). This group will receive intensive diabetes management with frequent contacts by study staff with the goal of near-normalization of glucose concentrations. \[Cohort B participants will not receive study drug. Instead, they will be randomized 2:1 to HCL or non-HCL.\] HCL: Hybrid Closed Loop therapy verapamil

Non-HCL and Standard Care

Participants assigned to non-HCL will receive a Dexcom G6 CGM and diabetes management will follow usual care by their personal diabetes health care provider. \[Cohort B participants will not receive study drug. Instead, they will be randomized 2:1 to HCL or non-HCL.\] non-HCL: Usual diabetes care

Verapamil

Verapamil will be taken orally once per day by participants in Cohort A. A dosing scheme will be followed, using 120mg tablets or 60mg half tablets. Whether drug is active or placebo is blinded to both participant and site. \[Cohort B participants will not receive study drug. Instead, they will be randomized 2:1 to HCL or non-HCL.\] verapamil 120mg tablet: verapamil tablet

Placebo

Placebo will be taken orally once per day by participants in Cohort A. A dosing scheme will be followed, using 120mg tablets or 60mg half tablets. Whether drug is active or placebo is blinded to both participant and site. \[Cohort B participants will not receive study drug. Instead, they will be randomized 2:1 to HCL or non-HCL.\] placebo: placebo pill manufactured to mimic verapamil 120mg tablet

Group identifiers and denominators belong to this outcome only. They may differ in another outcome or in safety reporting.

Analysis denominator · Participants

GroupSource count
HCL and Intensive Management61
Non-HCL and Standard Care51
Verapamil47
Placebo40

Reported measurements

6 Weeks
Values in Coefficient of Variation Percentage · Interval/dispersion: Standard Deviation
GroupValueSpreadLowerUpperComment
HCL and Intensive Management315Not reportedNot reportedNot reported
Non-HCL and Standard Care306Not reportedNot reportedNot reported
Verapamil285Not reportedNot reportedNot reported
Placebo306Not reportedNot reportedNot reported
13 Weeks
Values in Coefficient of Variation Percentage · Interval/dispersion: Standard Deviation
GroupValueSpreadLowerUpperComment
HCL and Intensive Management316Not reportedNot reportedNot reported
Non-HCL and Standard Care307Not reportedNot reportedNot reported
Verapamil296Not reportedNot reportedNot reported
Placebo296Not reportedNot reportedNot reported
26 Weeks
Values in Coefficient of Variation Percentage · Interval/dispersion: Standard Deviation
GroupValueSpreadLowerUpperComment
HCL and Intensive Management325Not reportedNot reportedNot reported
Non-HCL and Standard Care326Not reportedNot reportedNot reported
Verapamil306Not reportedNot reportedNot reported
Placebo315Not reportedNot reportedNot reported
39 Weeks
Values in Coefficient of Variation Percentage · Interval/dispersion: Standard Deviation
GroupValueSpreadLowerUpperComment
HCL and Intensive Management346Not reportedNot reportedNot reported
Non-HCL and Standard Care336Not reportedNot reportedNot reported
Verapamil316Not reportedNot reportedNot reported
Placebo335Not reportedNot reportedNot reported
52 Weeks
Values in Coefficient of Variation Percentage · Interval/dispersion: Standard Deviation
GroupValueSpreadLowerUpperComment
HCL and Intensive Management346Not reportedNot reportedNot reported
Non-HCL and Standard Care335Not reportedNot reportedNot reported
Verapamil326Not reportedNot reportedNot reported
Placebo335Not reportedNot reportedNot reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        spread
        5
        value
        31
      2. group Id
        OG001
        spread
        6
        value
        30
      3. group Id
        OG002
        spread
        5
        value
        28
      4. group Id
        OG003
        spread
        6
        value
        30
    title
    6 Weeks
  2. categories
    1. measurements
      1. group Id
        OG000
        spread
        6
        value
        31
      2. group Id
        OG001
        spread
        7
        value
        30
      3. group Id
        OG002
        spread
        6
        value
        29
      4. group Id
        OG003
        spread
        6
        value
        29
    title
    13 Weeks
  3. categories
    1. measurements
      1. group Id
        OG000
        spread
        5
        value
        32
      2. group Id
        OG001
        spread
        6
        value
        32
      3. group Id
        OG002
        spread
        6
        value
        30
      4. group Id
        OG003
        spread
        5
        value
        31
    title
    26 Weeks
  4. categories
    1. measurements
      1. group Id
        OG000
        spread
        6
        value
        34
      2. group Id
        OG001
        spread
        6
        value
        33
      3. group Id
        OG002
        spread
        6
        value
        31
      4. group Id
        OG003
        spread
        5
        value
        33
    title
    39 Weeks
  5. categories
    1. measurements
      1. group Id
        OG000
        spread
        6
        value
        34
      2. group Id
        OG001
        spread
        5
        value
        33
      3. group Id
        OG002
        spread
        6
        value
        32
      4. group Id
        OG003
        spread
        5
        value
        33
    title
    52 Weeks
denoms
  1. counts
    1. group Id
      OG000
      value
      61
    2. group Id
      OG001
      value
      51
    3. group Id
      OG002
      value
      47
    4. group Id
      OG003
      value
      40
    units
    Participants
description
Coefficient of variation between treatment groups. Calculated as the standard deviation of CGM glucose values divided by the mean of CGM glucose values.
dispersion Type
Standard Deviation
groups
  1. description
    Participants assigned to HCL group will initially be randomly assigned 1:1 to use either the Tandem t:slim X2 with Control-IQ technology or a Medtronic HCL system (Medtronic 670G 4.0 AHCL (prior to protocol version 5.0) or Medtronic 780G (starting with protocol version 5.0)). This group will receive intensive diabetes management with frequent contacts by study staff with the goal of near-normalization of glucose concentrations. \[Cohort B participants will not receive study drug. Instead, they will be randomized 2:1 to HCL or non-HCL.\] HCL: Hybrid Closed Loop therapy verapamil
    id
    OG000
    title
    HCL and Intensive Management
  2. description
    Participants assigned to non-HCL will receive a Dexcom G6 CGM and diabetes management will follow usual care by their personal diabetes health care provider. \[Cohort B participants will not receive study drug. Instead, they will be randomized 2:1 to HCL or non-HCL.\] non-HCL: Usual diabetes care
    id
    OG001
    title
    Non-HCL and Standard Care
  3. description
    Verapamil will be taken orally once per day by participants in Cohort A. A dosing scheme will be followed, using 120mg tablets or 60mg half tablets. Whether drug is active or placebo is blinded to both participant and site. \[Cohort B participants will not receive study drug. Instead, they will be randomized 2:1 to HCL or non-HCL.\] verapamil 120mg tablet: verapamil tablet
    id
    OG002
    title
    Verapamil
  4. description
    Placebo will be taken orally once per day by participants in Cohort A. A dosing scheme will be followed, using 120mg tablets or 60mg half tablets. Whether drug is active or placebo is blinded to both participant and site. \[Cohort B participants will not receive study drug. Instead, they will be randomized 2:1 to HCL or non-HCL.\] placebo: placebo pill manufactured to mimic verapamil 120mg tablet
    id
    OG003
    title
    Placebo
param Type
MEAN
population Description
1 participant in Non-HCL+Placebo group dropped at baseline and was not analyzed.
reporting Status
POSTED
time Frame
6, 13, 26, 39 weeks and 52 weeks
title
CGM Coefficient of Variation
type
SECONDARY
unit Of Measure
Coefficient of Variation Percentage

Download exact source JSON → · Snapshot ctgov-results-25a395029948b04d52b1253f

Preserved source evidence · Not medical advice