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NCT01853748 · OUTCOME

3-year T-DM1 iDFS Percentage by Tumor Size and Hormone Receptor (HR) Status

T-DM1 vs Paclitaxel/Trastuzumab for Breast (ATEMPT Trial) · Source last updated 2026-02-19

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

Measure
NUMBER
Unit
percentage of participants
Interval / dispersion
95% Confidence Interval
Time frame
3 years

What was measured

Disease-free survival (DFS) is evaluated in patients treated with trastuzumab emtansine, which is defined per protocol: from the time of randomization until the to the occurrence of the first of the following events: * Local/regional recurrence: a recurrent or new invasive ipsilateral breast cancer, invasive breast cancer in the axilla, regional lymph nodes, chest wall, or skin of the ipsilateral breast. * Contralateral invasive breast cancer, * Distant recurrence: metastatic disease that has either been biopsy confirmed or clinically diagnosed as recurrent invasive breast cancer. A single new lesion on a bone scan without evidence of lytic disease on x-ray and without symptoms does not in and of itself constitute distant recurrence, but multiple new bone lesions, or increased isotope uptake associated with new bone symptoms are more likely due to metastases. Bone metastases must be documented with x-rays and clinical description. * Death from any cause

Groups in this outcome

Trastuzumab Emtansine (T-DM1) With Tumor Size < 1 cm

T-DM1 3.6mg/kg every three weeks by IV for 17 doses for a total of 51 weeks

Trastuzumab Emtansine (T-DM1) With Tumor Size >= 1 cm

T-DM1 3.6mg/kg every three weeks by IV for 17 doses for a total of 51 weeks

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

Analysis denominator · Participants

GroupSource count
Trastuzumab Emtansine (T-DM1) With Tumor Size < 1 cm163
Trastuzumab Emtansine (T-DM1) With Tumor Size >= 1 cm220

Reported measurements

Source class 1
Values in percentage of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Trastuzumab Emtansine (T-DM1) With Tumor Size < 1 cm98.7Not reported96.9100Not reported
Trastuzumab Emtansine (T-DM1) With Tumor Size >= 1 cm97.2Not reported9599.4Not reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        96.9
        upper Limit
        100
        value
        98.7
      2. group Id
        OG001
        lower Limit
        95
        upper Limit
        99.4
        value
        97.2
denoms
  1. counts
    1. group Id
      OG000
      value
      163
    2. group Id
      OG001
      value
      220
    units
    Participants
description
Disease-free survival (DFS) is evaluated in patients treated with trastuzumab emtansine, which is defined per protocol: from the time of randomization until the to the occurrence of the first of the following events: * Local/regional recurrence: a recurrent or new invasive ipsilateral breast cancer, invasive breast cancer in the axilla, regional lymph nodes, chest wall, or skin of the ipsilateral breast. * Contralateral invasive breast cancer, * Distant recurrence: metastatic disease that has either been biopsy confirmed or clinically diagnosed as recurrent invasive breast cancer. A single new lesion on a bone scan without evidence of lytic disease on x-ray and without symptoms does not in and of itself constitute distant recurrence, but multiple new bone lesions, or increased isotope uptake associated with new bone symptoms are more likely due to metastases. Bone metastases must be documented with x-rays and clinical description. * Death from any cause
dispersion Type
95% Confidence Interval
groups
  1. description
    T-DM1 3.6mg/kg every three weeks by IV for 17 doses for a total of 51 weeks
    id
    OG000
    title
    Trastuzumab Emtansine (T-DM1) With Tumor Size < 1 cm
  2. description
    T-DM1 3.6mg/kg every three weeks by IV for 17 doses for a total of 51 weeks
    id
    OG001
    title
    Trastuzumab Emtansine (T-DM1) With Tumor Size >= 1 cm
param Type
NUMBER
reporting Status
POSTED
time Frame
3 years
title
3-year T-DM1 iDFS Percentage by Tumor Size and Hormone Receptor (HR) Status
type
SECONDARY
unit Of Measure
percentage of participants

Download exact source JSON → · Snapshot ctgov-results-191f4516d4760045304b24a0

Preserved source evidence · Not medical advice