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NCT00750269 · OUTCOME

(Phase II) Primary Tumor Control Rate at the Maximum Tolerated Dose (MTD)

Stereotactic Body Radiation Therapy in Treating Patients With Stage I Non-Small Cell Lung Cancer · Source last updated 2022-06-09

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
90% Confidence Interval
Time frame
From start of SBRT to 2 years.

What was measured

Primary tumor control is defined as the absence of primary tumor failure. Primary tumor failure (PTF) refers to the primary treated tumor after protocol therapy and corresponds to meeting following two criteria: 1) Increase in tumor dimension of 20% as defined above for local enlargement (LE); 2) The measurable tumor with criteria meeting LE should be avid on Positron Emission Tomography (PET) imaging with uptake of a similar intensity as the pretreatment staging PET, OR the measurable tumor should be biopsied confirming viable carcinoma. Marginal Failures (MF) and Involved Lobe Failures were also counted as PTF. The cumulative incidence method was used to estimate primary tumor control rate. The 90% confidence interval for local control was calculated using bootstrapping methods. Per the protocol, only the MTD dose level was to be analyzed. However, due to the quantity of patients enrolled on Dose Level 8 as well as safety concerns, Dose Level 8 was analyzed also.

Analysis population: All eligible patients who started study treatment

Groups in this outcome

Level 8: 11.5 Gy/FX

SBRT 57.5 Gy SBRT delivered in 5 fractions of 11.5 Gy/fraction over 1.5 to 2 weeks for a total of 57.5 Gy

Level 9: 12.0 Gy/FX

SBRT 60.0 Gy SBRT delivered in 5 fractions of 12.0 Gy/fraction over 1.5 to 2 weeks for a total of 60.0 Gy

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

Analysis denominator · Participants

GroupSource count
Level 8: 11.5 Gy/FX38
Level 9: 12.0 Gy/FX33

Reported measurements

Source class 1
Values in percentage of participants · Interval/dispersion: 90% Confidence Interval
GroupValueSpreadLowerUpperComment
Level 8: 11.5 Gy/FX89.4Not reported81.697.4Not reported
Level 9: 12.0 Gy/FX87.7Not reported78.397Not reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        81.6
        upper Limit
        97.4
        value
        89.4
      2. group Id
        OG001
        lower Limit
        78.3
        upper Limit
        97
        value
        87.7
denoms
  1. counts
    1. group Id
      OG000
      value
      38
    2. group Id
      OG001
      value
      33
    units
    Participants
description
Primary tumor control is defined as the absence of primary tumor failure. Primary tumor failure (PTF) refers to the primary treated tumor after protocol therapy and corresponds to meeting following two criteria: 1) Increase in tumor dimension of 20% as defined above for local enlargement (LE); 2) The measurable tumor with criteria meeting LE should be avid on Positron Emission Tomography (PET) imaging with uptake of a similar intensity as the pretreatment staging PET, OR the measurable tumor should be biopsied confirming viable carcinoma. Marginal Failures (MF) and Involved Lobe Failures were also counted as PTF. The cumulative incidence method was used to estimate primary tumor control rate. The 90% confidence interval for local control was calculated using bootstrapping methods. Per the protocol, only the MTD dose level was to be analyzed. However, due to the quantity of patients enrolled on Dose Level 8 as well as safety concerns, Dose Level 8 was analyzed also.
dispersion Type
90% Confidence Interval
groups
  1. description
    SBRT 57.5 Gy SBRT delivered in 5 fractions of 11.5 Gy/fraction over 1.5 to 2 weeks for a total of 57.5 Gy
    id
    OG000
    title
    Level 8: 11.5 Gy/FX
  2. description
    SBRT 60.0 Gy SBRT delivered in 5 fractions of 12.0 Gy/fraction over 1.5 to 2 weeks for a total of 60.0 Gy
    id
    OG001
    title
    Level 9: 12.0 Gy/FX
param Type
NUMBER
population Description
All eligible patients who started study treatment
reporting Status
POSTED
time Frame
From start of SBRT to 2 years.
title
(Phase II) Primary Tumor Control Rate at the Maximum Tolerated Dose (MTD)
type
PRIMARY
unit Of Measure
percentage of participants

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

Preserved source evidence · Not medical advice