NCT03674112 · OUTCOME

Change From Baseline Over Time in the Diarrhoea Scale Score of the EORTC QLQ-C30

A Study to Evaluate Patient Preference and Satisfaction of Subcutaneous Administration of the Fixed-Dose Combination of Pertuzumab and Trastuzumab in Participants With HER2-Positive Early Breast Cancer · Source last updated 2024-01-02

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

Measure: MEAN
Unit: score on a scale
Interval / dispersion: Standard Deviation
Time frame: Baseline (Day 1 of Cycle 1); Day 1 of Cycles 3, 6, and 15 (or last treatment cycle; each cycle is 21 days); 1.5, 2, and 3 years (up to 3 years)

What was measured

The EORTC QLQ-C30 questionnaire consisted of 30 questions covering treatment-related symptoms, functioning, and GHS/HRQoL. Questions were answered by participants on a scale from 1 to 4 or 1 to 7. Raw scores were transformed to scale scores that ranged from 0 to 100 where a higher scale score indicating a higher response (i.e., on the functioning and GHS/QoL scales a higher score meant better functioning/QoL, whereas on the symptom scales a higher score meant greater \[worse\] symptoms). The EORTC QLQ-C30 data was scored according to the EORTC scoring manual (Fayers 2001). In the event of incomplete data, for all questionnaire subscales, if more than 50% of the constituent items are completed, a pro-rated score was to be computed consistent with the scoring manuals and published validation reports. For subscales with less than 50% of the items completed, the subscale was to be considered as missing.

Analysis population: The Patient-Reported Outcome (PRO)-Evaluable Population includes all participants in the ITT population with a baseline EORTC QLQ-C30 assessment and at least one post-baseline EORTC QLQ-C30 assessment. The number analyzed at a given timepoint indicates participants with non-missing data at that timepoint.

Groups in this outcome

All Participants

In the Treatment Cross-Over Period of the study, all participants received their first 6 cycles of treatment in accordance with the study arm to which they were randomized: Arm A) pertuzumab IV and trastuzumab IV (P+H IV) for 3 treatment cycles followed by the pertuzumab and trastuzumab fixed-dose combination for subcutaneous administration (PH FDC SC) for 3 treatment cycles (1 cycle = 21 days); or Arm B) PH FDC SC for 3 treatment cycles followed by P+H IV for 3 treatment cycles (1 cycle = 21 days). Following completion of this study period, participants chose one of the two study treatments to receive in the Treatment Continuation Period for the remaining anti-HER2 treatment cycles (18 planned cycles in total, including pre-study neoadjuvant treatment). After completing study treatment, participants entered the Follow-up Period wherein they were to be followed for 3 years from the date the last participant was randomized.

A: P+H IV Followed by PH FDC SC

In the Treatment Cross-Over Period of the study, participants randomized to Arm A first received pertuzumab IV and trastuzumab IV (P+H IV) administration for 3 treatment cycles followed by the pertuzumab and trastuzumab fixed-dose combination for subcutaneous administration (PH FDC SC) for 3 treatment cycles (1 cycle = 21 days). Following completion of this study period, participants chose one of the two study treatments to receive in the Treatment Continuation Period for the remaining anti-HER2 treatment cycles (18 planned cycles in total, including pre-study neoadjuvant treatment). After completing study treatment, participants entered the Follow-up Period wherein they were to be followed for 3 years from the date the last participant was randomized.

B: PH FDC SC Followed by P+H IV

In the Treatment Cross-Over Period of the study, participants randomized to Arm B first received the pertuzumab and trastuzumab fixed-dose combination for subcutaneous administration (PH FDC SC) for 3 treatment cycles followed by pertuzumab intravenous (IV) and trastuzumab IV (P+H IV) administration for 3 treatment cycles (1 cycle = 21 days). Following completion of this study period, participants chose one of the two study treatments to receive in the Treatment Continuation Period for the remaining anti-HER2 treatment cycles (18 planned cycles in total, including pre-study neoadjuvant treatment). After completing study treatment, participants entered the Follow-up Period wherein they were to be followed for 3 years from the date the last participant was randomized.

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