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Paclitaxel Albumin-Stabilized Nanoparticle Formulation in Treating Patients of Different Ages With Metastatic Breast Cancer

Age-Related Changes in Nanoparticle Albumin Bound (Nab) Paclitaxel Pharmacokinetics and Pharmacodynamics

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00609791
Enrollment
40
Registered
2008-02-07
Start date
2008-02-11
Completion date
2027-03-23
Last updated
2026-06-04

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Breast Cancer

Keywords

recurrent breast cancer, stage IV breast cancer, male breast cancer

Brief summary

RATIONALE: Gathering information from patients of different ages receiving paclitaxel albumin-stabilized nanoparticle formulation for metastatic breast cancer may help doctors understand how the age of the patient changes the way the drug works. PURPOSE: This phase II trial is studying how well paclitaxel albumin-stabilized nanoparticle formulation works in treating patients of different ages with metastatic breast cancer.

Detailed description

OBJECTIVES: Primary * To determine age-related changes in the pharmacokinetics (pK) of weekly paclitaxel albumin-stabilized nanoparticle formulation (nab-paclitaxel) in patients with metastatic breast cancer. * To determine age-related changes in the pharmacodynamics (toxicity) of nab-paclitaxel in these patients. Secondary * To determine response and time to progression in these patients. * To explore predictors of pK parameters in these patients. * To explore predictors of the need for dose reduction, dose delays, or grade 3 or 4 toxicity in these patients. OUTLINE: Patients are stratified by age in years (\< 50 vs 50-60 vs 60-70 vs \> 70). Patients receive paclitaxel albumin-stabilized nanoparticle formulation IV over 30 minutes once daily on days 1, 8, and 15 as planned. Treatment repeats every 28 days in the absence of disease progression or unacceptable toxicity. Blood is drawn for pharmacokinetic studies periodically during course 1. Patients complete questionnaires regarding risk factors that would predict for pharmacokinetic parameters at baseline, prior to the third course of treatment, and at end of study. Data collected include medical characteristics, demographics, functional status, comorbidity, psychological status, social functioning and support, nutritional status, and cognition.

Interventions

DRUGpaclitaxel albumin-stabilized nanoparticle formulation

100 mg/m2 3 weeks on 1 week off

OTHERpharmacological study

Cycle 1, week 1 at 0, 0.25, 0.5, 1, 1.5, 2, 4, 6, 8, 24 and 48 hours

OTHERphysiologic testing

Prior to treatment, at the end of 2 cycles of therapy and upon completion of therapy

OTHERquestionnaire administration

Prior to treatment, at the end of 2 cycles of therapy and upon completion of therapy

OTHERstudy of socioeconomic and demographic variables

Prior to treatment, at the end of 2 cycles of therapy and upon completion of therapy

PROCEDUREcognitive assessment

Prior to treatment, at the end of 2 cycles of therapy and upon completion of therapy

PROCEDUREpsychosocial assessment and care

Prior to treatment, at the end of 2 cycles of therapy and upon completion of therapy

Sponsors

City of Hope Medical Center
Lead SponsorOTHER
National Cancer Institute (NCI)
CollaboratorNIH

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 120 Years
Healthy volunteers
No

Inclusion criteria

DISEASE CHARACTERISTICS: Inclusion criteria: * Diagnosis of metastatic breast cancer * Any estrogen receptor, progesterone receptor, or HER-2/neu status allowed as long as the patient will receive paclitaxel albumin-stabilized nanoparticle formulation alone * First- or second-line chemotherapy treatment for metastatic disease planned

Exclusion criteria

* Untreated CNS metastases or symptomatic CNS metastases requiring escalating doses of corticosteroids PATIENT CHARACTERISTICS: * Karnofsky performance status 70-100% * WBC ≥ 3,000/mm³ * ANC ≥ 1,500/mm³ * Platelet count ≥ 100,000/mm³ * Hemoglobin ≥ 9.0 g/dL * AST and ALT ≤ 2.5 times upper limit of normal (ULN) * Alkaline phosphatase ≤ 2.5 times ULN (unless bone metastases are present in the absence of liver metastases) * Bilirubin ≤ 1.5 mg/dL * Peripheral neuropathy ≤ grade 1 * Creatinine clearance ≥ 30 mL/min (calculated or 24-hour) * Negative pregnancy test * Fertile patients must use effective contraception * Not pregnant or nursing * No known history of allergic reactions to paclitaxel * No serious or uncontrolled infection * Ability to understand and the willingness to sign a written informed consent document PRIOR CONCURRENT THERAPY: * See Disease Characteristics * No ≥ grade 2 toxicity from prior therapy (other than alopecia) * No taxane for adjuvant therapy or metastatic disease within the past 12 months * No other concurrent investigational agents * No other concurrent anticancer therapy

Design outcomes

Primary

MeasureTime frameDescription
Mean Area Under the Curve Over 24 Hours (AUC24)Cycle 1, week 1 at 0, 0.25, 0.5, 1, 1.5, 2, 4, 6, 8, 24 hours post treatmentMean of area under the curve over 24 hours (AUC24) reported as well as linear regression of AUC24 by age and chemotherapy toxicity risk score. Chemotherapy toxicity risk score is based on the following variables and the value assigned to them. Higher scores indicate more risk, range of 2-19: patient age (\>=72 years); creatinine clearance (\<34 mL/min); presence of amenia (\<10 g/dL); hearing impairment; falls in the last 6 months; need for assistance with taking medications; limitations in walking one block; decreased social activities; chemotherapy dosing; number of chemotherapy drugs; cancer type
Mean Clearance (CL)Cycle 1, week 1 at 0, 0.25, 0.5, 1, 1.5, 2, 4, 6, 8, 24 hours post treatmentMean CL reported as well as regression results of CL by age and chemotherapy toxicity risk score. Chemotherapy toxicity risk score is based on the following variables and the value assigned to them. Higher scores indicate more risk, range of 2-19: patient age (\>=72 years); creatinine clearance (\<34 mL/min); presence of amenia (\<10 g/dL); hearing impairment; falls in the last 6 months; need for assistance with taking medications; limitations in walking one block; decreased social activities; chemotherapy dosing; number of chemotherapy drugs; cancer type

Secondary

MeasureTime frameDescription
Grade 3 Toxicity Rate by Chemotherapy Toxicity Risk ScoreUp to 2.5 yearsComparison of presence of grade 3 toxicity rate by risk score distribution. Chemotherapy toxicity risk score is based on the following variables. Higher scores indicate more risk, range of 2-19: patient age (\>=72 years); creatinine clearance (\<34 mL/min); presence of amenia (\<10 g/dL); hearing impairment; falls in the last 6 months; need for assistance with taking medications; limitations in walking one block; decreased social activities; chemotherapy dosing; number of chemotherapy drugs; cancer type Chemotherapy toxicity risk score category: Low risk score - toxicity risk score: 0-5 Medium risk score - toxicity risk score: 6-9 High risk score - toxicity risk score: 10-19
Best ResponseAssessed after every 2 cycles of therapy until progression, up to 2.5 yearsComplete Response (CR): Disappearance of all target lesions. Partial Response (PR): At least a 30% decrease in the sum of the longest diameter (LD) of target lesions, taking as reference the baseline sum LD. Progressive Disease (PD): At least a 20% increase in the sum of the LD of target lesions, taking as reference the smallest sum LD recorded since the treatment started or the appearance of one or more new lesions. Stable Disease (SD): Neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD, taking as reference the smallest sum LD since the treatment started.
Median Event-free Survival (EFS) in MonthsFrom the date treatment begins until the first date on which recurrence, progression or death due to any cause, assessed up to 3.5 yearsMedian and associated 95% exact Clopper and Pearson binomial confidence limits will be estimated for EFS. EFS will be estimated using the product limit method of Kaplan and Meier. EFS is defined by time to disease recurrence, disease progression or death to due to any cause
Number of Participants Requiring Dose ReductionsAt the completion of treatment, up to 2.5 yearsNumber of participants requiring a dose reduction is reported and analysis was performed using a student's 2 sample t test to determine the need of dose reductions based on age, AUC, and CL.
Number of Participants With a Dose OmissionAt the completion of treatment, up to 2.5 yearsNumber of participants with a dose omission is reported and analysis was performed using a student's 2 sample t test to determine the need of dose omission based on age, AUC, and CL.
Percent of Participants With a Grade 3 ToxicityAt the completion of treatment, up to 2.5 yearsPercent of participants experiencing a grade 3 toxicity is reported and analysis was performed using a student's 2 sample t test to determine the presence of grade 3 toxicity based on age, AUC, and CL.

Countries

United States

Contacts

PRINCIPAL_INVESTIGATORMina Sedrak, MD

City of Hope Medical Center

Participant flow

Participants by arm

ArmCount
Nab-paclitaxel
paclitaxel albumin-stabilized nanoparticle formulation: 100 mg/m2 3 weeks on 1 week off pharmacological study: Cycle 1, week 1 at 0, 0.25, 0.5, 1, 1.5, 2, 4, 6, 8, 24 and 48 hours physiologic testing: Prior to treatment, at the end of 2 cycles of therapy and upon completion of therapy questionnaire administration: Prior to treatment, at the end of 2 cycles of therapy and upon completion of therapy study of socioeconomic and demographic variables: Prior to treatment, at the end of 2 cycles of therapy and upon completion of therapy cognitive assessment: Prior to treatment, at the end of 2 cycles of therapy and upon completion of therapy psychosocial assessment and care: Prior to treatment, at the end of 2 cycles of therapy and upon completion of therapy
39
Total39

Baseline characteristics

CharacteristicNab-paclitaxel
Age, Continuous60 years
Age, Customized
<50
10 Participants
Age, Customized
50-59
5 Participants
Age, Customized
60-69
15 Participants
Age, Customized
>=70
9 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
8 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
31 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
7 Participants
Race (NIH/OMB)
Black or African American
2 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
White
30 Participants
Region of Enrollment
United States
39 participants
Sex: Female, Male
Female
39 Participants
Sex: Female, Male
Male
0 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
26 / 39
other
Total, other adverse events
39 / 39
serious
Total, serious adverse events
2 / 39

Outcome results

Primary

Mean Area Under the Curve Over 24 Hours (AUC24)

Mean of area under the curve over 24 hours (AUC24) reported as well as linear regression of AUC24 by age and chemotherapy toxicity risk score. Chemotherapy toxicity risk score is based on the following variables and the value assigned to them. Higher scores indicate more risk, range of 2-19: patient age (\>=72 years); creatinine clearance (\<34 mL/min); presence of amenia (\<10 g/dL); hearing impairment; falls in the last 6 months; need for assistance with taking medications; limitations in walking one block; decreased social activities; chemotherapy dosing; number of chemotherapy drugs; cancer type

Time frame: Cycle 1, week 1 at 0, 0.25, 0.5, 1, 1.5, 2, 4, 6, 8, 24 hours post treatment

Population: Three participants did not have AUC data through 24 hours post treatment due to incomplete blood samples

ArmMeasureValue (MEAN)Dispersion
Nab-paclitaxelMean Area Under the Curve Over 24 Hours (AUC24)4711 µg/mL*hourStandard Deviation 2777
Comparison: Linear regression of ln AUC24 on age in yearsp-value: 0.055Regression, Linear
Comparison: Linear regression of ln AUC24 on chemotherapy toxicity risk scorep-value: 0.013Regression, Linear
Primary

Mean Clearance (CL)

Mean CL reported as well as regression results of CL by age and chemotherapy toxicity risk score. Chemotherapy toxicity risk score is based on the following variables and the value assigned to them. Higher scores indicate more risk, range of 2-19: patient age (\>=72 years); creatinine clearance (\<34 mL/min); presence of amenia (\<10 g/dL); hearing impairment; falls in the last 6 months; need for assistance with taking medications; limitations in walking one block; decreased social activities; chemotherapy dosing; number of chemotherapy drugs; cancer type

Time frame: Cycle 1, week 1 at 0, 0.25, 0.5, 1, 1.5, 2, 4, 6, 8, 24 hours post treatment

Population: Nine participants did not have CL data due to incomplete blood samples

ArmMeasureValue (MEAN)Dispersion
Nab-paclitaxelMean Clearance (CL)37.16 L/hStandard Deviation 14.81
Comparison: Linear regression of ln CL on age in yearsp-value: 0.25Regression, Linear
Comparison: Linear regression of ln CL versus chemotherapy toxicity risk scorep-value: 0.04Regression, Linear
Secondary

Best Response

Complete Response (CR): Disappearance of all target lesions. Partial Response (PR): At least a 30% decrease in the sum of the longest diameter (LD) of target lesions, taking as reference the baseline sum LD. Progressive Disease (PD): At least a 20% increase in the sum of the LD of target lesions, taking as reference the smallest sum LD recorded since the treatment started or the appearance of one or more new lesions. Stable Disease (SD): Neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD, taking as reference the smallest sum LD since the treatment started.

Time frame: Assessed after every 2 cycles of therapy until progression, up to 2.5 years

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Nab-paclitaxelBest ResponsePartial Remission12 Participants
Nab-paclitaxelBest ResponseStable Disease15 Participants
Nab-paclitaxelBest ResponseProgressive Disease10 Participants
Nab-paclitaxelBest ResponseNot evaluable2 Participants
Secondary

Grade 3 Toxicity Rate by Chemotherapy Toxicity Risk Score

Comparison of presence of grade 3 toxicity rate by risk score distribution. Chemotherapy toxicity risk score is based on the following variables. Higher scores indicate more risk, range of 2-19: patient age (\>=72 years); creatinine clearance (\<34 mL/min); presence of amenia (\<10 g/dL); hearing impairment; falls in the last 6 months; need for assistance with taking medications; limitations in walking one block; decreased social activities; chemotherapy dosing; number of chemotherapy drugs; cancer type Chemotherapy toxicity risk score category: Low risk score - toxicity risk score: 0-5 Medium risk score - toxicity risk score: 6-9 High risk score - toxicity risk score: 10-19

Time frame: Up to 2.5 years

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Nab-paclitaxelGrade 3 Toxicity Rate by Chemotherapy Toxicity Risk ScoreLow risk score : Grade 3 toxicity5 Participants
Nab-paclitaxelGrade 3 Toxicity Rate by Chemotherapy Toxicity Risk ScoreLow risk score : No grade 3 toxicity25 Participants
Nab-paclitaxelGrade 3 Toxicity Rate by Chemotherapy Toxicity Risk ScoreMedium risk score : Grade 3 toxicity3 Participants
Nab-paclitaxelGrade 3 Toxicity Rate by Chemotherapy Toxicity Risk ScoreMedium risk score : No grade 3 toxicity3 Participants
Nab-paclitaxelGrade 3 Toxicity Rate by Chemotherapy Toxicity Risk ScoreHigh risk score : Grade 3 toxicity2 Participants
Nab-paclitaxelGrade 3 Toxicity Rate by Chemotherapy Toxicity Risk ScoreHigh risk score : No grade 3 toxicity1 Participants
p-value: 0.041Fisher Exact
Secondary

Median Event-free Survival (EFS) in Months

Median and associated 95% exact Clopper and Pearson binomial confidence limits will be estimated for EFS. EFS will be estimated using the product limit method of Kaplan and Meier. EFS is defined by time to disease recurrence, disease progression or death to due to any cause

Time frame: From the date treatment begins until the first date on which recurrence, progression or death due to any cause, assessed up to 3.5 years

ArmMeasureValue (MEDIAN)
Nab-paclitaxelMedian Event-free Survival (EFS) in Months5.7 months
Secondary

Number of Participants Requiring Dose Reductions

Number of participants requiring a dose reduction is reported and analysis was performed using a student's 2 sample t test to determine the need of dose reductions based on age, AUC, and CL.

Time frame: At the completion of treatment, up to 2.5 years

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Nab-paclitaxelNumber of Participants Requiring Dose Reductions11 Participants
Comparison: Difference in age based on whether there was need for a dose reduction.p-value: 0.3895% CI: [-16.5, 6.7]t-test, 2 sided
Comparison: Difference in AUC24 based on the need of a dose reduction.p-value: 0.7695% CI: [-0.33, 0.44]t-test, 2 sided
Comparison: Difference in clearance based on whether there was a need for dose reduction.p-value: 0.7595% CI: [-0.49, 0.36]t-test, 2 sided
Secondary

Number of Participants With a Dose Omission

Number of participants with a dose omission is reported and analysis was performed using a student's 2 sample t test to determine the need of dose omission based on age, AUC, and CL.

Time frame: At the completion of treatment, up to 2.5 years

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Nab-paclitaxelNumber of Participants With a Dose Omission15 Participants
Comparison: Difference in age based on whether there was need for a dose omission.p-value: 0.1595% CI: [-2.3, 13.9]t-test, 2 sided
Comparison: Difference in AUC24 based on whether there was need for a dose omission.p-value: 0.6195% CI: [-0.39, 0.23]t-test, 2 sided
Comparison: Difference in clearance based on whether there was a need for a dose omission.p-value: 0.5195% CI: [-0.22, 0.42]t-test, 2 sided
Secondary

Percent of Participants With a Grade 3 Toxicity

Percent of participants experiencing a grade 3 toxicity is reported and analysis was performed using a student's 2 sample t test to determine the presence of grade 3 toxicity based on age, AUC, and CL.

Time frame: At the completion of treatment, up to 2.5 years

ArmMeasureValue (NUMBER)
Nab-paclitaxelPercent of Participants With a Grade 3 Toxicity26 percentage of participants
Comparison: Difference in age based on whether a participant experienced grade 3 toxicity.p-value: 0.7595% CI: [-9.3, 12.7]t-test, 2 sided
Comparison: Difference in AUC based on whether a participant experienced grade 3 toxicity.p-value: 0.1395% CI: [-0.12, 0.81]t-test, 2 sided
Comparison: Difference in clearance based on whether a participant experienced grade 3 toxicity.p-value: 0.3495% CI: [-0.67, 0.25]t-test, 2 sided

Source: ClinicalTrials.gov · Data processed: Jun 5, 2026