Trial Outcomes & Findings for A Study to Describe the Breast Cancer Patient Population, Treatment, and Results in Indian Patients Receiving Combinations of the Medicines Called Palbociclib for Advanced Breast Cancer (NCT NCT05584644)

NCT ID: NCT05584644

Last Updated: 2023-12-19

Results Overview

Number of participants according to their starting dose (125 milligrams per day \[mg/day\], 100 mg/day) of palbociclib were reported in this outcome measure. For participants whose dose details were not available was reported under 'data not available'. Index date was defined as 60 days after the physician first prescribed palbociclib + hormonal therapy (letrozole, fulvestrant or anastrozole for first line and letrozole, fulvestrant or exemestane for second line therapy) following the availability of specific indication in the market.

Recruitment status

COMPLETED

Target enrollment

150 participants

Primary outcome timeframe

From index date until end of follow-up (anytime from Dec 2016 to May 2021[approximately 4.5 years]); available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)

Results posted on

2023-12-19

Participant Flow

Data of participants diagnosed with hormone receptor positive (HR+) /human epidermal growth factor receptor 2 negative (HER2-) advanced/metastatic breast cancer (ABC/MBC), who received palbociclib combined with aromatase inhibitor in menopausal state as initial endocrine therapy in MBC or with fulvestrant after progression on prior endocrine therapy were observed.

This retrospective observational study used medical records of participants from 6 oncology hospitals within a period of Dec 2016 to May 2021 (approximately 4.5 years). Available data was evaluated in 9 months of this retrospective observational study.

Participant milestones

Participant milestones
Measure
Palbociclib: 1st Line Therapy
Participants who received palbociclib in combination with hormonal therapy as first line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Palbociclib: 2nd Line Therapy
Participants who received palbociclib in combination with hormonal therapy as second line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Overall Study
STARTED
105
45
Overall Study
COMPLETED
105
45
Overall Study
NOT COMPLETED
0
0

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

Race and Ethnicity were not collected from any participant.

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Palbociclib: 1st Line Therapy
n=105 Participants
Participants who received palbociclib in combination with hormonal therapy as first line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Palbociclib: 2nd Line Therapy
n=45 Participants
Participants who received palbociclib in combination with hormonal therapy as second line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Total
n=150 Participants
Total of all reporting groups
Age, Customized
Less than or equal to (<=) 65 years
66 Participants
n=105 Participants
32 Participants
n=45 Participants
98 Participants
n=150 Participants
Age, Customized
Greater than (>) 65 years
39 Participants
n=105 Participants
13 Participants
n=45 Participants
52 Participants
n=150 Participants
Sex: Female, Male
Female
105 Participants
n=105 Participants
45 Participants
n=45 Participants
150 Participants
n=150 Participants
Sex: Female, Male
Male
0 Participants
n=105 Participants
0 Participants
n=45 Participants
0 Participants
n=150 Participants
Race and Ethnicity Not Collected
0 Participants
Race and Ethnicity were not collected from any participant.

PRIMARY outcome

Timeframe: From index date until end of follow-up (anytime from Dec 2016 to May 2021[approximately 4.5 years]); available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)

Population: Analysis population included all eligible participants whose data were retrieved and observed in this study.

Number of participants according to their starting dose (125 milligrams per day \[mg/day\], 100 mg/day) of palbociclib were reported in this outcome measure. For participants whose dose details were not available was reported under 'data not available'. Index date was defined as 60 days after the physician first prescribed palbociclib + hormonal therapy (letrozole, fulvestrant or anastrozole for first line and letrozole, fulvestrant or exemestane for second line therapy) following the availability of specific indication in the market.

Outcome measures

Outcome measures
Measure
Palbociclib: 1st Line Therapy
n=105 Participants
Participants who received palbociclib in combination with hormonal therapy as first line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Palbociclib: 2nd Line Therapy
n=45 Participants
Participants who received palbociclib in combination with hormonal therapy as second line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Number of Participants According to the Starting Dose of Palbociclib
Data not available
5 Participants
0 Participants
Number of Participants According to the Starting Dose of Palbociclib
125mg/day
99 Participants
43 Participants
Number of Participants According to the Starting Dose of Palbociclib
100mg/day
1 Participants
2 Participants

PRIMARY outcome

Timeframe: From index date to end of treatment, from Dec 2016 to May 2021 (approximately 4.5 years); available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)

Population: Analysis population included all eligible participants whose data were retrieved and observed in this study.

Duration of treatment was reported in this outcome measure. Index date was defined as 60 days after the physician first prescribed palbociclib + hormonal therapy (letrozole, fulvestrant or anastrozole for first line and letrozole, fulvestrant or exemestane for second line therapy) following the availability of specific indication in the market.

Outcome measures

Outcome measures
Measure
Palbociclib: 1st Line Therapy
n=105 Participants
Participants who received palbociclib in combination with hormonal therapy as first line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Palbociclib: 2nd Line Therapy
n=45 Participants
Participants who received palbociclib in combination with hormonal therapy as second line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Duration of Treatment
15.08 Months
Interval 9.67 to 22.43
11.63 Months
Interval 6.37 to 19.6

PRIMARY outcome

Timeframe: From index date until end of follow-up (anytime from Dec 2016 to May 2021[approximately 4.5 years]); available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)

Population: Analysis population included all eligible participants whose data were retrieved and observed in this study.

Number of participants according to dose reductions during palbociclib treatment were reported in this outcome measure. Dose was reduced to 100mg and 75 mg. Index date was defined as 60 days after the physician first prescribed palbociclib + hormonal therapy (letrozole, fulvestrant or anastrozole for first line and letrozole, fulvestrant or exemestane for second line therapy) following the availability of specific indication in the market.

Outcome measures

Outcome measures
Measure
Palbociclib: 1st Line Therapy
n=105 Participants
Participants who received palbociclib in combination with hormonal therapy as first line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Palbociclib: 2nd Line Therapy
n=45 Participants
Participants who received palbociclib in combination with hormonal therapy as second line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Number of Participants Who Had Any Palbociclib Dose Reduction
Dose reduced to 100 mg
13 Participants
1 Participants
Number of Participants Who Had Any Palbociclib Dose Reduction
Dose reduced to 75 mg
1 Participants
0 Participants

PRIMARY outcome

Timeframe: From index date until end of follow-up (anytime from Dec 2016 to May 2021[approximately 4.5 years]); available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)

Population: Analysis population included all eligible participants whose data were retrieved and observed in this study.

Number of participants with any interruptions during palbociclib treatment were reported in this outcome measure. Index date was defined as 60 days after the physician first prescribed palbociclib + hormonal therapy (letrozole, fulvestrant or anastrozole for first line and letrozole, fulvestrant or exemestane for second line therapy) following the availability of specific indication in the market.

Outcome measures

Outcome measures
Measure
Palbociclib: 1st Line Therapy
n=105 Participants
Participants who received palbociclib in combination with hormonal therapy as first line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Palbociclib: 2nd Line Therapy
n=45 Participants
Participants who received palbociclib in combination with hormonal therapy as second line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Number of Participants Who Had Any Interruption in Palbociclib Treatment
9 Participants
1 Participants

PRIMARY outcome

Timeframe: From index date until end of follow-up (anytime from Dec 2016 to May 2021[approximately 4.5 years]); available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)

Population: Analysis population included all eligible participants whose data were retrieved and observed in this study.

Number of participants who had any delay in palbociclib treatment were reported in this outcome measure. Index date was defined as 60 days after the physician first prescribed palbociclib + hormonal therapy (letrozole, fulvestrant or anastrozole for first line and letrozole, fulvestrant or exemestane for second line therapy) following the availability of specific indication in the market.

Outcome measures

Outcome measures
Measure
Palbociclib: 1st Line Therapy
n=105 Participants
Participants who received palbociclib in combination with hormonal therapy as first line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Palbociclib: 2nd Line Therapy
n=45 Participants
Participants who received palbociclib in combination with hormonal therapy as second line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Number of Participants Who Had Any Delays in Palbociclib Treatment
7 Participants
1 Participants

PRIMARY outcome

Timeframe: From index date until end of follow-up (anytime from Dec 2016 to May 2021[approximately 4.5 years]); available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)

Population: Analysis population included all eligible participants whose data were retrieved and observed in this study.

Number of participants classified according to reasons for treatment discontinuations which included increased transaminases, cardiomyopathy was reported in this outcome measure. Index date was defined as 60 days after the physician first prescribed palbociclib + hormonal therapy (letrozole, fulvestrant or anastrozole for first line and letrozole, fulvestrant or exemestane for second line therapy) following the availability of specific indication in the market.

Outcome measures

Outcome measures
Measure
Palbociclib: 1st Line Therapy
n=105 Participants
Participants who received palbociclib in combination with hormonal therapy as first line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Palbociclib: 2nd Line Therapy
n=45 Participants
Participants who received palbociclib in combination with hormonal therapy as second line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Number of Participants According to Reasons for Treatment Discontinuation
Increased transaminases
1 Participants
0 Participants
Number of Participants According to Reasons for Treatment Discontinuation
Cardiomyopathy
1 Participants
0 Participants

PRIMARY outcome

Timeframe: From index date until end of follow-up (anytime from Dec 2016 to May 2021[approximately 4.5 years]); available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)

Population: Analysis population included all eligible participants whose data were retrieved and observed in this study. Here, 'Overall Number of Participants Analyzed' signifies participants evaluable for this outcome measure.

Number of participants classified according to reasons for change in treatment were reported in this outcome measure. Index date was defined as 60 days after the physician first prescribed palbociclib + hormonal therapy (letrozole, fulvestrant or anastrozole for first line and letrozole, fulvestrant or exemestane for second line therapy) following the availability of specific indication in the market.

Outcome measures

Outcome measures
Measure
Palbociclib: 1st Line Therapy
n=18 Participants
Participants who received palbociclib in combination with hormonal therapy as first line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Palbociclib: 2nd Line Therapy
n=18 Participants
Participants who received palbociclib in combination with hormonal therapy as second line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Number of Participants According to Reasons for Change in Treatment
Dose Resumed following interruption or cycle delay
9 Participants
3 Participants
Number of Participants According to Reasons for Change in Treatment
Side effects/toxicity
10 Participants
3 Participants
Number of Participants According to Reasons for Change in Treatment
Other reasons
5 Participants
0 Participants
Number of Participants According to Reasons for Change in Treatment
Dose Reduced
12 Participants
4 Participants
Number of Participants According to Reasons for Change in Treatment
Dose Interrupted (temporarily stopped during a dose cycle)
9 Participants
1 Participants
Number of Participants According to Reasons for Change in Treatment
Cycle delay (the next cycle is pushed back)
7 Participants
1 Participants
Number of Participants According to Reasons for Change in Treatment
Combination partner therapy continued
17 Participants
3 Participants

PRIMARY outcome

Timeframe: From index date to death or disease progression start of new therapy or last available follow-up whichever occurred first,maximum up to approximately 4.5years;available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)

Population: Analysis population included all eligible participants whose data were retrieved and observed in this study. Here, 'Overall Number of Participants Analyzed' signifies participants evaluable for this outcome measure.

Progression free survival was defined as the time from palbociclib combination treatment initiation until 1) clinician documented disease progression (PD) while on palbociclib, 2) death, 3) start of a new therapy line after final palbociclib dose, if the reason for discontinuation of palbociclib was disease progression, or 4) last available follow-up, whichever occurred first. Index date was defined as 60 days after the physician first prescribed palbociclib + hormonal therapy (letrozole, fulvestrant or anastrozole for first line and letrozole, fulvestrant or exemestane for second line therapy) following the availability of specific indication in the market.

Outcome measures

Outcome measures
Measure
Palbociclib: 1st Line Therapy
n=77 Participants
Participants who received palbociclib in combination with hormonal therapy as first line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Palbociclib: 2nd Line Therapy
n=28 Participants
Participants who received palbociclib in combination with hormonal therapy as second line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Progression Free Survival
31.97 Months
Interval 22.43 to 47.5
22.33 Months
Interval 11.8 to 48.8

PRIMARY outcome

Timeframe: From index date to CR/PR, from Dec 2016 to May 2021 (approximately 4.5 years); available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)

Population: Analysis population included all eligible participants whose data were retrieved and observed in this study.

The objective response rate was defined as the percentage of participants with complete response (CR) and partial response (PR). As per RECIST version 1.1 criteria: CR = disappearance of all target lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to \<10 millimeter (mm). Disappearance of all non-target lesions and normalization of tumor marker level. All lymph nodes must be non-pathological in size (\<10 mm short axis); PR = at least 30% decrease in sum of diameters of target lesions taking as reference baseline sum diameters. Index date was defined as 60 days after the physician first prescribed palbociclib + hormonal therapy (letrozole, fulvestrant or anastrozole for first line and letrozole, fulvestrant or exemestane for second line therapy) following the availability of specific indication in the market.

Outcome measures

Outcome measures
Measure
Palbociclib: 1st Line Therapy
n=105 Participants
Participants who received palbociclib in combination with hormonal therapy as first line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Palbociclib: 2nd Line Therapy
n=45 Participants
Participants who received palbociclib in combination with hormonal therapy as second line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Objective Response Rate (ORR)
63.81 Percentage of participants
77.78 Percentage of participants

PRIMARY outcome

Timeframe: From index date to death, from Dec 2016 to May 2021 (approximately 4.5 years); available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)

Population: Analysis population included all eligible participants whose data were retrieved and observed in this study.

Number of participants who died were reported in this outcome measure. Index date was defined as 60 days after the physician first prescribed palbociclib + hormonal therapy (letrozole, fulvestrant or anastrozole for first line and letrozole, fulvestrant or exemestane for second line therapy) following the availability of specific indication in the market.

Outcome measures

Outcome measures
Measure
Palbociclib: 1st Line Therapy
n=105 Participants
Participants who received palbociclib in combination with hormonal therapy as first line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Palbociclib: 2nd Line Therapy
n=45 Participants
Participants who received palbociclib in combination with hormonal therapy as second line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Number of Participants Who Died
8 Participants
3 Participants

PRIMARY outcome

Timeframe: From index date to death due to any cause, (from Dec 2016 to May 2021 [approximately 4.5 years]); available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)

Population: Analysis population included all eligible participants whose data were retrieved and observed in this study.

OS was defined as the time from index date to the date of death due to any cause. Index date was defined as 60 days after the physician first prescribed palbociclib + hormonal therapy (letrozole, fulvestrant or anastrozole for first line and letrozole, fulvestrant or exemestane for second line therapy) following the availability of specific indication in the market.

Outcome measures

Outcome measures
Measure
Palbociclib: 1st Line Therapy
n=105 Participants
Participants who received palbociclib in combination with hormonal therapy as first line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Palbociclib: 2nd Line Therapy
n=45 Participants
Participants who received palbociclib in combination with hormonal therapy as second line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Overall Survival (OS)
NA Months
Median and 95%CI could not be calculated as there were less number of participants with event.
NA Months
Median and 95%CI could not be calculated as there were less number of participants with event.

PRIMARY outcome

Timeframe: From index date until end of follow-up (anytime from Dec 2016 to May 2021[approximately 4.5 years]); available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)

Population: Analysis population included all eligible participants whose data were retrieved and observed in this study.

Number of participants classified according to the biomarker status were reported in this outcome measure. Index date was defined as 60 days after the physician first prescribed palbociclib + hormonal therapy (letrozole, fulvestrant or anastrozole for first line and letrozole, fulvestrant or exemestane for second line therapy) following the availability of specific indication in the market.

Outcome measures

Outcome measures
Measure
Palbociclib: 1st Line Therapy
n=105 Participants
Participants who received palbociclib in combination with hormonal therapy as first line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Palbociclib: 2nd Line Therapy
n=45 Participants
Participants who received palbociclib in combination with hormonal therapy as second line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Number of Participants According to Biomarker Status
NA Participants
The data of eligible participants were not available on medical records.
NA Participants
The data of eligible participants were not available on medical records.

PRIMARY outcome

Timeframe: From index date until end of follow-up (anytime from Dec 2016 to May 2021[approximately 4.5 years]); available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)

Population: Analysis population included all eligible participants whose data were retrieved and observed in this study.

Number of participants with family history of breast cancer were reported in this outcome measure. Index date was defined as 60 days after the physician first prescribed palbociclib + hormonal therapy (letrozole, fulvestrant or anastrozole for first line and letrozole, fulvestrant or exemestane for second line therapy) following the availability of specific indication in the market.

Outcome measures

Outcome measures
Measure
Palbociclib: 1st Line Therapy
n=105 Participants
Participants who received palbociclib in combination with hormonal therapy as first line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Palbociclib: 2nd Line Therapy
n=45 Participants
Participants who received palbociclib in combination with hormonal therapy as second line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Number of Participants With Family History of Breast Cancer
4 Participants
0 Participants

PRIMARY outcome

Timeframe: From index date until end of follow-up (anytime from Dec 2016 to May 2021[approximately 4.5 years]); available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)

Population: Analysis population included all eligible participants whose data were retrieved and observed in this study.

Duration from breast cancer diagnosis to palbociclib treatment was reported in this outcome measure. Index date was defined as 60 days after the physician first prescribed palbociclib + hormonal therapy (letrozole, fulvestrant or anastrozole for first line and letrozole, fulvestrant or exemestane for second line therapy) following the availability of specific indication in the market.

Outcome measures

Outcome measures
Measure
Palbociclib: 1st Line Therapy
n=105 Participants
Participants who received palbociclib in combination with hormonal therapy as first line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Palbociclib: 2nd Line Therapy
n=45 Participants
Participants who received palbociclib in combination with hormonal therapy as second line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Duration From Breast Cancer Diagnosis to Palbociclib Treatment
8.69 Months
Standard Deviation 26.12
45.50 Months
Standard Deviation 43.53

PRIMARY outcome

Timeframe: From index date until end of follow-up (anytime from Dec 2016 to May 2021[approximately 4.5 years]); available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)

Population: Analysis population included all eligible participants whose data were retrieved and observed in this study.

Number of participants classified according to stages (Stage I, II, IIIa, IV) of breast cancer were included in this outcome measure. Stage I indicated the cancer was small and had not spread anywhere else, Stage II indicated the cancer had grown, but had not spread, Stage IIIa indicated the cancer had grown larger and might have spread to the surrounding tissues and/or the lymph nodes. Stage IV indicated the cancer had spread from where it started to at least 1 other body organ, also known as secondary or metastatic cancer. For participants whose breast cancer stage were not available was reported under 'data not available'. Index date was defined as 60 days after the physician first prescribed palbociclib + hormonal therapy (letrozole, fulvestrant or anastrozole for first line and letrozole, fulvestrant or exemestane for second line therapy) following the availability of specific indication in the market.

Outcome measures

Outcome measures
Measure
Palbociclib: 1st Line Therapy
n=105 Participants
Participants who received palbociclib in combination with hormonal therapy as first line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Palbociclib: 2nd Line Therapy
n=45 Participants
Participants who received palbociclib in combination with hormonal therapy as second line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Number of Participants According to Stages of Breast Cancer
Stage IIIa
1 Participants
1 Participants
Number of Participants According to Stages of Breast Cancer
Data not available
24 Participants
1 Participants
Number of Participants According to Stages of Breast Cancer
Stage I
5 Participants
0 Participants
Number of Participants According to Stages of Breast Cancer
Stage II
5 Participants
12 Participants
Number of Participants According to Stages of Breast Cancer
Stage IV
70 Participants
31 Participants

PRIMARY outcome

Timeframe: From index date until end of follow-up (anytime from Dec 2016 to May 2021[approximately 4.5 years]); available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)

Population: Analysis population included all eligible participants whose data were retrieved and observed in this study.

Number of participants classified according to node status were included in this outcome measure. Index date was defined as 60 days after the physician first prescribed palbociclib + hormonal therapy (letrozole, fulvestrant or anastrozole for first line and letrozole, fulvestrant or exemestane for second line therapy) following the availability of specific indication in the market.

Outcome measures

Outcome measures
Measure
Palbociclib: 1st Line Therapy
n=105 Participants
Participants who received palbociclib in combination with hormonal therapy as first line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Palbociclib: 2nd Line Therapy
n=45 Participants
Participants who received palbociclib in combination with hormonal therapy as second line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Number of Participants According to Node Status
Regional nodes
5 Participants
5 Participants
Number of Participants According to Node Status
Distal
6 Participants
1 Participants

PRIMARY outcome

Timeframe: From index date until end of follow-up (anytime from Dec 2016 to May 2021[approximately 4.5 years]); available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)

Population: Analysis population included all eligible participants whose data were retrieved and observed in this study.

Number of participants classified according to menopausal status which included natural and induced were included in this outcome measure. For participants whose details were not available was reported under 'data not available'. Index date was defined as 60 days after the physician first prescribed palbociclib + hormonal therapy (letrozole, fulvestrant or anastrozole for first line and letrozole, fulvestrant or exemestane for second line therapy) following the availability of specific indication in the market.

Outcome measures

Outcome measures
Measure
Palbociclib: 1st Line Therapy
n=105 Participants
Participants who received palbociclib in combination with hormonal therapy as first line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Palbociclib: 2nd Line Therapy
n=45 Participants
Participants who received palbociclib in combination with hormonal therapy as second line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Number of Participants According to Menopausal Status
Induced
16 Participants
16 Participants
Number of Participants According to Menopausal Status
Natural
88 Participants
29 Participants
Number of Participants According to Menopausal Status
Data not available
1 Participants
0 Participants

PRIMARY outcome

Timeframe: From index date until end of follow-up (anytime from Dec 2016 to May 2021[approximately 4.5 years]); available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)

Population: Analysis population included all eligible participants whose data were retrieved and observed in this study.

ECOG PS was used to assess physical health of participants. ECOG PS grade:0= fully active, able to carry on all pre-disease performance without restriction,1= restricted in physically strenuous activity but ambulatory and able to carry out work of a light or sedentary nature 2= ambulatory and capable of all self-care but unable to carry out any work activities. Up and about more than 50% of waking hours, 3= capable of only limited self-care, 4= completely disabled, cannot carry on any selfcare totally confined to bed or chair confined to bed or chair more than 50% of waking hours and 5= dead. Participants whose ECOG scores were not available reported as 'data not available'. Only those categories with non-zero values were reported. Index date= 60 days after physician first prescribed palbociclib + hormonal following availability of specific indication in market.

Outcome measures

Outcome measures
Measure
Palbociclib: 1st Line Therapy
n=105 Participants
Participants who received palbociclib in combination with hormonal therapy as first line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Palbociclib: 2nd Line Therapy
n=45 Participants
Participants who received palbociclib in combination with hormonal therapy as second line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Number of Participants According to Performance Status Based on Eastern Cooperative Oncology Group (ECOG) Performance Status (PS)
1
65 Participants
33 Participants
Number of Participants According to Performance Status Based on Eastern Cooperative Oncology Group (ECOG) Performance Status (PS)
2
6 Participants
5 Participants
Number of Participants According to Performance Status Based on Eastern Cooperative Oncology Group (ECOG) Performance Status (PS)
3
0 Participants
1 Participants
Number of Participants According to Performance Status Based on Eastern Cooperative Oncology Group (ECOG) Performance Status (PS)
Data not available
34 Participants
6 Participants

PRIMARY outcome

Timeframe: From index date until end of follow-up (anytime from Dec 2016 to May 2021[approximately 4.5 years]); available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)

Population: Analysis population included all eligible participants whose data were retrieved and observed in this study.

Number of participants classified according to metastatic sites were reported in this outcome measure. Metastatic sites included bone, lung, liver, lymph nodes, others. For participants whose details were not available was reported under 'data not available'. Index date was defined as 60 days after the physician first prescribed palbociclib + hormonal therapy (letrozole, fulvestrant or anastrozole for first line and letrozole, fulvestrant or exemestane for second line therapy) following the availability of specific indication in the market. Participant could have more than 1 location of metastases.

Outcome measures

Outcome measures
Measure
Palbociclib: 1st Line Therapy
n=105 Participants
Participants who received palbociclib in combination with hormonal therapy as first line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Palbociclib: 2nd Line Therapy
n=45 Participants
Participants who received palbociclib in combination with hormonal therapy as second line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Number of Participants According to Metastatic Sites
Bone
62 Participants
28 Participants
Number of Participants According to Metastatic Sites
Lung
28 Participants
16 Participants
Number of Participants According to Metastatic Sites
Liver
14 Participants
7 Participants
Number of Participants According to Metastatic Sites
Lymph nodes
16 Participants
6 Participants
Number of Participants According to Metastatic Sites
Others
7 Participants
4 Participants
Number of Participants According to Metastatic Sites
Data not available
12 Participants
3 Participants

PRIMARY outcome

Timeframe: From index date until end of follow-up (anytime from Dec 2016 to May 2021[approximately 4.5 years]); available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)

Population: Analysis population included all eligible participants whose data were retrieved and observed in this study.

Participants classified according to status of disease as de novo versus and recurrent disease were reported in this outcome measure. Index date was defined as 60 days after the physician first prescribed palbociclib + hormonal therapy (letrozole, fulvestrant or anastrozole for first line and letrozole, fulvestrant or exemestane for second line therapy) following the availability of specific indication in the market.

Outcome measures

Outcome measures
Measure
Palbociclib: 1st Line Therapy
n=105 Participants
Participants who received palbociclib in combination with hormonal therapy as first line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Palbociclib: 2nd Line Therapy
n=45 Participants
Participants who received palbociclib in combination with hormonal therapy as second line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Number of Participants According to de Novo and Recurrent Disease
NA Participants
The data of eligible participants were not available on medical records.
NA Participants
The data of eligible participants were not available on medical records.

PRIMARY outcome

Timeframe: From index date until end of follow-up (anytime from Dec 2016 to May 2021[approximately 4.5 years]); available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)

Population: Analysis population included all eligible participants whose data were retrieved and observed in this study.

Participants classified according to therapies received for early breast cancer which included adjuvant chemotherapy, adjuvant endocrine therapy, neoadjuvant treatment, radiotherapy, surgery were reported in this outcome measure. For participants whose details were not available was reported under 'data not available'. Participant could have received more than 1 therapy. Index date was defined as 60 days after the physician first prescribed palbociclib + hormonal therapy (letrozole, fulvestrant or anastrozole for first line and letrozole, fulvestrant or exemestane for second line therapy) following the availability of specific indication in the market.

Outcome measures

Outcome measures
Measure
Palbociclib: 1st Line Therapy
n=105 Participants
Participants who received palbociclib in combination with hormonal therapy as first line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Palbociclib: 2nd Line Therapy
n=45 Participants
Participants who received palbociclib in combination with hormonal therapy as second line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Number of Participants According to Therapies Received for Early Breast Cancer
Adjuvant chemotherapy
4 Participants
8 Participants
Number of Participants According to Therapies Received for Early Breast Cancer
Adjuvant endocrine therapy
14 Participants
5 Participants
Number of Participants According to Therapies Received for Early Breast Cancer
Neoadjuvant treatment
6 Participants
11 Participants
Number of Participants According to Therapies Received for Early Breast Cancer
Radiotherapy
20 Participants
26 Participants
Number of Participants According to Therapies Received for Early Breast Cancer
Surgery
13 Participants
26 Participants
Number of Participants According to Therapies Received for Early Breast Cancer
Data not available
69 Participants
9 Participants

PRIMARY outcome

Timeframe: From index date until end of follow-up (anytime from Dec 2016 to May 2021[approximately 4.5 years]); available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)

Population: Analysis population included all eligible participants whose data were retrieved and observed in this study.

Index date was defined as 60 days after the physician first prescribed palbociclib + hormonal therapy (letrozole, fulvestrant or anastrozole for first line and letrozole, fulvestrant or exemestane for second line therapy) following the availability of specific indication in the market.

Outcome measures

Outcome measures
Measure
Palbociclib: 1st Line Therapy
n=105 Participants
Participants who received palbociclib in combination with hormonal therapy as first line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Palbociclib: 2nd Line Therapy
n=45 Participants
Participants who received palbociclib in combination with hormonal therapy as second line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Time Since End of Adjuvant Treatment
NA Months
The data of eligible participants were not available on medical records.
NA Months
The data of eligible participants were not available on medical records.

PRIMARY outcome

Timeframe: From index date until end of follow-up (anytime from Dec 2016 to May 2021[approximately 4.5 years]); available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)

Population: Analysis population included all eligible participants whose data were retrieved and observed in this study.

Participants were classified according to supportive therapies received for HR+/HER2- diagnosis and were reported in this outcome measure. Supportive therapies included nutritional treatment, bisphosphonates, anti-anxiety, anti-depressant, anti-emetics, non-steroidal anti-inflammatory drugs. Index date was defined as 60 days after the physician first prescribed palbociclib + hormonal therapy (letrozole, fulvestrant or anastrozole for first line and letrozole, fulvestrant or exemestane for second line therapy) following the availability of specific indication in the market.

Outcome measures

Outcome measures
Measure
Palbociclib: 1st Line Therapy
n=105 Participants
Participants who received palbociclib in combination with hormonal therapy as first line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Palbociclib: 2nd Line Therapy
n=45 Participants
Participants who received palbociclib in combination with hormonal therapy as second line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Number of Participants According to Supportive Therapies Received for Hormone Receptor Positive / Human Epidermal Growth Factor 2 Negative (HR+/HER2-) Diagnosis
Nutritional support
37 Participants
7 Participants
Number of Participants According to Supportive Therapies Received for Hormone Receptor Positive / Human Epidermal Growth Factor 2 Negative (HR+/HER2-) Diagnosis
Bisphosphonates
8 Participants
2 Participants
Number of Participants According to Supportive Therapies Received for Hormone Receptor Positive / Human Epidermal Growth Factor 2 Negative (HR+/HER2-) Diagnosis
Antibiotics
5 Participants
1 Participants
Number of Participants According to Supportive Therapies Received for Hormone Receptor Positive / Human Epidermal Growth Factor 2 Negative (HR+/HER2-) Diagnosis
Anti-anxiety
3 Participants
0 Participants
Number of Participants According to Supportive Therapies Received for Hormone Receptor Positive / Human Epidermal Growth Factor 2 Negative (HR+/HER2-) Diagnosis
Anti-depressants
1 Participants
0 Participants
Number of Participants According to Supportive Therapies Received for Hormone Receptor Positive / Human Epidermal Growth Factor 2 Negative (HR+/HER2-) Diagnosis
Anti-emetics
1 Participants
1 Participants
Number of Participants According to Supportive Therapies Received for Hormone Receptor Positive / Human Epidermal Growth Factor 2 Negative (HR+/HER2-) Diagnosis
Opioid extended release
1 Participants
0 Participants
Number of Participants According to Supportive Therapies Received for Hormone Receptor Positive / Human Epidermal Growth Factor 2 Negative (HR+/HER2-) Diagnosis
Opioid immediate release
1 Participants
0 Participants
Number of Participants According to Supportive Therapies Received for Hormone Receptor Positive / Human Epidermal Growth Factor 2 Negative (HR+/HER2-) Diagnosis
Non-steroidal anti-inflammatory drugs
1 Participants
0 Participants
Number of Participants According to Supportive Therapies Received for Hormone Receptor Positive / Human Epidermal Growth Factor 2 Negative (HR+/HER2-) Diagnosis
Other supportive care
36 Participants
3 Participants
Number of Participants According to Supportive Therapies Received for Hormone Receptor Positive / Human Epidermal Growth Factor 2 Negative (HR+/HER2-) Diagnosis
NA
50 Participants
36 Participants

PRIMARY outcome

Timeframe: From index date until end of follow-up (anytime from Dec 2016 to May 2021[approximately 4.5 years]); available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)

Population: Analysis population included all eligible participants whose data were retrieved and observed in this study.

Index date was defined as 60 days after the physician first prescribed palbociclib + hormonal therapy (letrozole, fulvestrant or anastrozole for first line and letrozole, fulvestrant or exemestane for second line therapy) following the availability of specific indication in the market.

Outcome measures

Outcome measures
Measure
Palbociclib: 1st Line Therapy
n=105 Participants
Participants who received palbociclib in combination with hormonal therapy as first line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Palbociclib: 2nd Line Therapy
n=45 Participants
Participants who received palbociclib in combination with hormonal therapy as second line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Duration of Supportive Treatments for ABC/MBC
NA Months
The data of eligible participants were not available on medical records.
NA Months
The data of eligible participants were not available on medical records.

PRIMARY outcome

Timeframe: From index date until end of follow-up (anytime from Dec 2016 to May 2021[approximately 4.5 years]); available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)

Population: Analysis population included all eligible participants whose data were retrieved and observed in this study.

Participants were classified according to reasons for regimen change and were reported in this outcome measure. Index date was defined as 60 days after the physician first prescribed palbociclib + hormonal therapy (letrozole, fulvestrant or anastrozole for first line and letrozole, fulvestrant or exemestane for second line therapy) following the availability of specific indication in the market.

Outcome measures

Outcome measures
Measure
Palbociclib: 1st Line Therapy
n=105 Participants
Participants who received palbociclib in combination with hormonal therapy as first line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Palbociclib: 2nd Line Therapy
n=45 Participants
Participants who received palbociclib in combination with hormonal therapy as second line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Number of Participants According to Reasons for Regimen Change
NA Participants
The data of eligible participants were not available on medical records.
NA Participants
The data of eligible participants were not available on medical records.

Adverse Events

Palbociclib: 1st Line Therapy

Serious events: 4 serious events
Other events: 2 other events
Deaths: 8 deaths

Palbociclib: 2nd Line Therapy

Serious events: 0 serious events
Other events: 0 other events
Deaths: 3 deaths

Serious adverse events

Serious adverse events
Measure
Palbociclib: 1st Line Therapy
n=105 participants at risk
Participants who received palbociclib in combination with hormonal therapy as first line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Palbociclib: 2nd Line Therapy
n=45 participants at risk
Participants who received palbociclib in combination with hormonal therapy as second line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Blood and lymphatic system disorders
Neutropenia
1.9%
2/105 • From index date until end of follow up (anytime from Dec 2016 to May 2021[approximately 4.5 years]); available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)
Same event may appear as both an AE and SAE. However, what is presented are distinct events. An event may be categorized as serious in one participant and as non-serious in another, or a participant may have experienced both a serious and non-serious event.
0.00%
0/45 • From index date until end of follow up (anytime from Dec 2016 to May 2021[approximately 4.5 years]); available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)
Same event may appear as both an AE and SAE. However, what is presented are distinct events. An event may be categorized as serious in one participant and as non-serious in another, or a participant may have experienced both a serious and non-serious event.
Cardiac disorders
Cardiomyopathy
0.95%
1/105 • From index date until end of follow up (anytime from Dec 2016 to May 2021[approximately 4.5 years]); available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)
Same event may appear as both an AE and SAE. However, what is presented are distinct events. An event may be categorized as serious in one participant and as non-serious in another, or a participant may have experienced both a serious and non-serious event.
0.00%
0/45 • From index date until end of follow up (anytime from Dec 2016 to May 2021[approximately 4.5 years]); available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)
Same event may appear as both an AE and SAE. However, what is presented are distinct events. An event may be categorized as serious in one participant and as non-serious in another, or a participant may have experienced both a serious and non-serious event.
Respiratory, thoracic and mediastinal disorders
Acute Pulmonary Embolism
0.95%
1/105 • From index date until end of follow up (anytime from Dec 2016 to May 2021[approximately 4.5 years]); available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)
Same event may appear as both an AE and SAE. However, what is presented are distinct events. An event may be categorized as serious in one participant and as non-serious in another, or a participant may have experienced both a serious and non-serious event.
0.00%
0/45 • From index date until end of follow up (anytime from Dec 2016 to May 2021[approximately 4.5 years]); available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)
Same event may appear as both an AE and SAE. However, what is presented are distinct events. An event may be categorized as serious in one participant and as non-serious in another, or a participant may have experienced both a serious and non-serious event.

Other adverse events

Other adverse events
Measure
Palbociclib: 1st Line Therapy
n=105 participants at risk
Participants who received palbociclib in combination with hormonal therapy as first line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Palbociclib: 2nd Line Therapy
n=45 participants at risk
Participants who received palbociclib in combination with hormonal therapy as second line therapy under standard real world practice for HR+/HER2- MBC were included in this retrospective observational study. Available data were evaluated in 9 months of this study.
Blood and lymphatic system disorders
Neutropenia
0.95%
1/105 • From index date until end of follow up (anytime from Dec 2016 to May 2021[approximately 4.5 years]); available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)
Same event may appear as both an AE and SAE. However, what is presented are distinct events. An event may be categorized as serious in one participant and as non-serious in another, or a participant may have experienced both a serious and non-serious event.
0.00%
0/45 • From index date until end of follow up (anytime from Dec 2016 to May 2021[approximately 4.5 years]); available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)
Same event may appear as both an AE and SAE. However, what is presented are distinct events. An event may be categorized as serious in one participant and as non-serious in another, or a participant may have experienced both a serious and non-serious event.
Investigations
Increased Transaminases
0.95%
1/105 • From index date until end of follow up (anytime from Dec 2016 to May 2021[approximately 4.5 years]); available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)
Same event may appear as both an AE and SAE. However, what is presented are distinct events. An event may be categorized as serious in one participant and as non-serious in another, or a participant may have experienced both a serious and non-serious event.
0.00%
0/45 • From index date until end of follow up (anytime from Dec 2016 to May 2021[approximately 4.5 years]); available data studied from 24-May-2021 to 22-Feb-2022 (approximately 9 months of this study)
Same event may appear as both an AE and SAE. However, what is presented are distinct events. An event may be categorized as serious in one participant and as non-serious in another, or a participant may have experienced both a serious and non-serious event.

Additional Information

Pfizer ClinicalTrials.gov Call Center

Pfizer Inc.

Phone: 1-800-718-1021

Results disclosure agreements

  • Principal investigator is a sponsor employee Pfizer has the right to review disclosures, requesting a delay of less than 60 days. Investigator will postpone single center publications until after disclosure of pooled data (all sites), less than 12 months from study completion/termination at all participating sites. Investigator may not disclose previously undisclosed confidential information other than study results.
  • Publication restrictions are in place

Restriction type: OTHER