NCT04494425 · OUTCOME
Objective Response Rate (ORR) Assessed by Blinded Independent Central Review and Investigator in the Hormone Receptor-Positive, Human Epidermal Growth Factor Receptor 2-low Population
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
- Not reported
- Time frame
- Response evaluations performed at screening, q6w ± 1 week from randomization for 48 weeks, and then q9w ± 1 week, starting at Week 48 until PD, up to PCD of 18 March 2024 (maximum of approximately 43.85 months)
What was measured
ORR per RECIST 1.1 assessed by BICR and Investigator was defined as the percentage of participants with at least 1 visit response of complete response (CR) or partial response (PR). CR was defined as disappearance of all TLs since baseline. Any pathological lymph nodes selected as TLs must have a reduction in short axis diameter to \<10 mm. PR was defined as at least a 30% decrease in the sum of the diameters of TL, taking as reference the baseline sum of diameters.
Analysis population: The HER2-low population included the subset of participants in the ITT population with HER2 IHC 2+/ISH- and IHC 1+ as determined per the IRT data for HER2 IHC expression.
Groups in this outcome
T-DXd
Participants received T-DXd 5.4 mg/kg via IV infusion every 3 weeks until PD, unacceptable toxicity, withdrawal of consent, or another criterion for discontinuation was met.
Chemotherapy
Participants received Investigator's choice single-agent chemotherapy (capecitabine 1000 or 1250 mg/m\^2 orally twice daily for 2 weeks followed by a 1-week rest period in 3-week cycles, paclitaxel 80 mg/m\^2 via IV infusion qw in 3-week cycles or nab-paclitaxel 100 mg/m\^2 via IV infusion qw for 3 weeks followed by 1-week rest period in 4-week cycles) until PD, unacceptable toxicity, withdrawal of consent, or another criterion for discontinuation was met.
| Group | Source count |
|---|---|
| T-DXd | 359 |
| Chemotherapy | 354 |
Reported measurements
BICR Assessment
| Group | Value | Spread | Lower | Upper | Comment |
|---|---|---|---|---|---|
| T-DXd | 60.4 | Not reported | Not reported | Not reported | Not reported |
| Chemotherapy | 37.9 | Not reported | Not reported | Not reported | Not reported |
Investigator Assessment
| Group | Value | Spread | Lower | Upper | Comment |
|---|---|---|---|---|---|
| T-DXd | 60.4 | Not reported | Not reported | Not reported | Not reported |
| Chemotherapy | 40.4 | Not reported | Not reported | Not reported | Not reported |
Complete source fields
- classes
- categories
- measurements
- group Id
- OG000
- value
- 60.4
- group Id
- OG001
- value
- 37.9
- title
- BICR Assessment
- categories
- measurements
- group Id
- OG000
- value
- 60.4
- group Id
- OG001
- value
- 40.4
- title
- Investigator Assessment
- denoms
- counts
- group Id
- OG000
- value
- 359
- group Id
- OG001
- value
- 354
- units
- Participants
- description
- ORR per RECIST 1.1 assessed by BICR and Investigator was defined as the percentage of participants with at least 1 visit response of complete response (CR) or partial response (PR). CR was defined as disappearance of all TLs since baseline. Any pathological lymph nodes selected as TLs must have a reduction in short axis diameter to \<10 mm. PR was defined as at least a 30% decrease in the sum of the diameters of TL, taking as reference the baseline sum of diameters.
- groups
- description
- Participants received T-DXd 5.4 mg/kg via IV infusion every 3 weeks until PD, unacceptable toxicity, withdrawal of consent, or another criterion for discontinuation was met.
- id
- OG000
- title
- T-DXd
- description
- Participants received Investigator's choice single-agent chemotherapy (capecitabine 1000 or 1250 mg/m\^2 orally twice daily for 2 weeks followed by a 1-week rest period in 3-week cycles, paclitaxel 80 mg/m\^2 via IV infusion qw in 3-week cycles or nab-paclitaxel 100 mg/m\^2 via IV infusion qw for 3 weeks followed by 1-week rest period in 4-week cycles) until PD, unacceptable toxicity, withdrawal of consent, or another criterion for discontinuation was met.
- id
- OG001
- title
- Chemotherapy
- param Type
- NUMBER
- population Description
- The HER2-low population included the subset of participants in the ITT population with HER2 IHC 2+/ISH- and IHC 1+ as determined per the IRT data for HER2 IHC expression.
- reporting Status
- POSTED
- time Frame
- Response evaluations performed at screening, q6w ± 1 week from randomization for 48 weeks, and then q9w ± 1 week, starting at Week 48 until PD, up to PCD of 18 March 2024 (maximum of approximately 43.85 months)
- title
- Objective Response Rate (ORR) Assessed by Blinded Independent Central Review and Investigator in the Hormone Receptor-Positive, Human Epidermal Growth Factor Receptor 2-low Population
- type
- SECONDARY
- unit Of Measure
- percentage of participants
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Preserved source evidence · Not medical advice
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