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NCT02632786 · OUTCOME

NT-proBNP Slope

The PRONTO Study, a Global Phase 2b Study of NEOD001 in Previously Treated Subjects With Light Chain (AL) Amyloidosis · Source last updated 2019-04-05

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

Measure
MEAN
Unit
ng/L per infusion
Interval / dispersion
95% Confidence Interval
Time frame
Baseline through 12 months of treatment

What was measured

Rate of change in NT-proBNP (ng/L per infusion). Estimates of the intercept, slope, SE, and associated 95% CI for each treatment group, and the NEOD001 and placebo group difference comparisons are estimated using a general linear mixed effects model. The model fits a random intercept and slope for each subject and includes fixed effects for treatment group, time, treatment group by time interaction, IWRS stratification factors (hematologic response to first-line therapy: CR/VGPR, PR and NT-proBNP \<1800 ng/L, ≥1800 ng/L), and an unstructured covariance structure to model the within-subject errors. Time is represented in months as a continuous variable and includes all scheduled time points, including baseline. The p-value is associated with the visit by treatment group interaction term.

Analysis population: ITT population

Groups in this outcome

NEOD001 24 mg/kg

NEOD001, 24 mg/kg IV every 4 weeks for 12 months

Placebo

Placebo, 0.9% Saline IV every 4 weeks for 12 months

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

Analysis denominator · Participants

GroupSource count
NEOD001 24 mg/kg66
Placebo63

Reported measurements

Source class 1
Values in ng/L per infusion · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
NEOD001 24 mg/kg9.45Not reported-45.6664.55Not reported
Placebo81.41Not reported25.15137.68Not reported

Source statistical analyses

Group order, estimate direction, methods and comments are retained. No treatment ranking is inferred.

  1. ci Lower Limit
    -150.72
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    6.79
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    0.0729
    param Type
    Slope
    param Value
    -71.97
    statistical Method
    Mixed Models Analysis
Complete source fields
analyses
  1. ci Lower Limit
    -150.72
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    6.79
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    0.0729
    param Type
    Slope
    param Value
    -71.97
    statistical Method
    Mixed Models Analysis
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        -45.66
        upper Limit
        64.55
        value
        9.45
      2. group Id
        OG001
        lower Limit
        25.15
        upper Limit
        137.68
        value
        81.41
denoms
  1. counts
    1. group Id
      OG000
      value
      66
    2. group Id
      OG001
      value
      63
    units
    Participants
description
Rate of change in NT-proBNP (ng/L per infusion). Estimates of the intercept, slope, SE, and associated 95% CI for each treatment group, and the NEOD001 and placebo group difference comparisons are estimated using a general linear mixed effects model. The model fits a random intercept and slope for each subject and includes fixed effects for treatment group, time, treatment group by time interaction, IWRS stratification factors (hematologic response to first-line therapy: CR/VGPR, PR and NT-proBNP \<1800 ng/L, ≥1800 ng/L), and an unstructured covariance structure to model the within-subject errors. Time is represented in months as a continuous variable and includes all scheduled time points, including baseline. The p-value is associated with the visit by treatment group interaction term.
dispersion Type
95% Confidence Interval
groups
  1. description
    NEOD001, 24 mg/kg IV every 4 weeks for 12 months
    id
    OG000
    title
    NEOD001 24 mg/kg
  2. description
    Placebo, 0.9% Saline IV every 4 weeks for 12 months
    id
    OG001
    title
    Placebo
param Type
MEAN
population Description
ITT population
reporting Status
POSTED
time Frame
Baseline through 12 months of treatment
title
NT-proBNP Slope
type
SECONDARY
unit Of Measure
ng/L per infusion

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Preserved source evidence · Not medical advice