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Neoadjuvant Weekly Paclitaxel and Biomarkers of Therapy Response

Neoadjuvant Weekly Paclitaxel and Biomarkers of Therapy Response

Status
Recruiting
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03096418
Enrollment
50
Registered
2017-03-30
Start date
2017-03-13
Completion date
2027-06-01
Last updated
2026-06-16

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

Conditions

Breast Neoplasm Female

Brief summary

The hypothesis of this study is that paclitaxel levels increase chromosomal instability (CIN) in tumors and this is lethal to tumors that have pre-existing CIN. Treatment will be administered on an outpatient basis. Paclitaxel will be initiated as standard infusions on days 1, 8, and 15 of a 21-day cycle. Participants will continue with paclitaxel for cycles 2-4 prior to surgery.

Detailed description

Primary Objectives * To test if cancers with high chromosomal instability (CIN) respond to paclitaxel better than low CIN cancers. Secondary Objectives * To identify patient-specific differences in tumor levels and distribution of paclitaxel at 20 hours after first dose and patient-specific differences in peripheral non-tumor tissue (skin or plasma) paclitaxel levels 20 ± 4 hours after first dose. * To determine if paclitaxel levels are higher at 20h after the 3rd dose than after the first dose, and if levels are higher at 20h after the 10th, 11th, or 12th dose than the 1st and 3rd dose. * Compare pre-existing versus post-treatment antimitotic effects at 20h after the 1st dose, 20h after the 3rd dose, and 20h after the 10th, 11th, or 12th dose. * Correlate drug levels and distribution with biomarkers including mitotic index, aneuploidy, chromosomal instability, and Ki67. * Correlate pathologic response and clinical response with biomarkers including mitotic index, aneuploidy, CIN and Ki67. * To test if CIN increases in patient tumors in response to paclitaxel and to evaluate the feasibility of these measurements by genomic analysis. Initial Actual Primary and Study Completion Date registered as 8/16/2022 with 24 participants enrolled. Per a Protocol Amendment dated 5/7/24, this study will re-open to enroll up to 50 participants. NCI funding and data sharing information added.

Interventions

DRUGPaclitaxel

Paclitaxel is an FDA approved medication for treatment of curable breast cancer and is available by prescription at pharmacies throughout the United States.

Sponsors

University of Wisconsin, Madison
Lead SponsorOTHER
National Cancer Institute (NCI)
CollaboratorNIH

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
FEMALE
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Women with pathologically demonstrated breast cancer * Patients must be candidates for neoadjuvant paclitaxel chemotherapy by their treating oncologist. No other investigational or commercial therapeutic agents may be given concurrently with the paclitaxel. * Patients must not have metastatic disease on staging work-up per institutional guidelines. * A formalin-fixed paraffin embedded tumor block (preferred) or unstained slides must be available from a prior biopsy of the primary tumor (preferred) or lymph node. A minimum of 8 slides must be available. * The primary tumor or lymph node must be readily biopsied by surgery or radiology teams. * The primary tumor must be measurable by an imaging modality prior to treatment. This imaging modality is to be repeated after completion of 4 cycles of paclitaxel and prior to surgery. Such imaging modalities may include ultrasound, CT, mammography, or MRI. MRI will be the preferred imaging modality if available because it has the highest accuracy and positive predictive value for predicting pathologic complete response.All imaging will be performed per standard of care at the discretion of the treating physicians. * Subjects may not have had prior systemic chemotherapy regimens administered for treatment of their current breast cancer. However, studies (window studies, for example) that are deemed non-therapeutic, including those that utilize agents that are not FDA approved for the treatment of the patient's current breast cancer, are permitted. * Patients must have adequate organ and marrow function as determined by the treating oncologist. * Patient must be willing to undergo additional biopsy of breast tumor or lymph node. * Patient must have the ability and willingness to sign a written informed consent document. * Women of childbearing potential (per institutional policy) must agree to use effective contraception as discussed with treating oncologist for the duration of the study.

Exclusion criteria

* History of allergic reactions attributed to compounds of similar chemical or biologic composition to paclitaxel including to other drugs formulated in Cremophor(R) EL (polyoxyethylated castor oil). * Patients with known HIV due to concern that chemotherapy may cause further immunosuppression and potential infectious complications. * Patients on non-aspirin anti-coagulation (Coumadin, heparins, or clopidogrel) or with documented bleeding disorders will be excluded due to risk of bleeding with biopsy. * Uncontrolled intercurrent illness including, but not limited to, ongoing or active severe infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, other malignancies requiring therapy or psychiatric illness/social situations that would limit compliance with study requirements as determined by treatment physician. * Pregnant women are excluded from this study because paclitaxel is a pregnancy category D drug and may cause deleterious effects to the fetus. Because there is an unknown but potential risk for adverse events in nursing infants secondary to treatment of the mother with paclitaxel, breastfeeding should be discontinued if the mother is enrolled in the trial.

Design outcomes

Primary

MeasureTime frameDescription
Response to PaclitaxelUp to 3 monthsTo test if high cancers with high chromosomal instability (CIN) respond to paclitaxel better than low CIN cancers. Response determined by the percent decrease in linear measurement of tumor size on the greatest dimension per RECIST-like criteria

Secondary

MeasureTime frameDescription
Tumor Level Difference of PaclitaxelUp to 1 dayIdentify patient-specific differences in tumor levels of paclitaxel at 20 hours after first dose. This is measured by high-performance liquid chromatography of tumor and plasma samples and comparing variability between patients with descriptive statistics.
Non-Tumor Level Difference of PaclitaxelUp to 1 dayIdentify patient-specific differences in non-tumor (plasma) levels of paclitaxel at 20 hours after first dose. This is measured by high-performance liquid chromatography of tumor and plasma samples and comparing variability between patients with descriptive statistics.
Paclitaxel LevelsUp to 79 daysPaclitaxel levels at the first dose, 20 hours after the 3rd dose, and 20 hours after the 12th dose. This is measured by high-performance liquid chromatography of tumor and plasma samples and comparing difference at two time points within the same patient with paired statistics.
Antimitotic EffectsUp to 79 daysCompare pre-existing versus post-treatment antimitotic effects at 20 hours after the 1st dose, 20 hours after the 3rd dose, and 20 hours after the 12th dose. This is measured by tissue analysis of tumor samples with phospho-histone H3 and stains for spindle morphology to quantify mitotic index and mitotic characteristics at two time points using paired statistical analysis.
Mitotic IndexBaseline and 20 hours post-first doseThe mitotic index is a measure of cells arresting in mitosis, previously thought to be the major mechanism of taxol action. It is defined as the percentage of cells undergoing mitosis in a given population of cells. An elevated mitotic index indicates more cells are at this phase of the cell cycle at the time of sampling.
Correlate Drug Levels With Aneuploidy of TumorUp to 3 monthsCorrelate pathologic response and clinical response with biomarkers including aneuploidy
Correlate Drug Levels With Chromosomal Instability of TumorUp to 3 monthsCorrelate pathologic response and clinical response with biomarkers including CIN
Ki67 of TumorUp to 3 monthsThe Ki-67 protein is a cellular marker for proliferation. Ki-67 is an excellent marker to determine the growth fraction of a given cell population. The fraction of Ki-67-positive tumor cells (the Ki-67 labeling index) is often correlated with the clinical course of cancer.
Change in CIN LevelsBaseline and 20 hours post-first doseThere are many proposed ways to measure CIN. Here, we used # of multipolar spindles as a surrogate of CIN measures.

Countries

United States

Contacts

CONTACTCancer Connect
clinicaltrials@cancer.wisc.edu800-622-8922
PRINCIPAL_INVESTIGATORMarina Sharifi, MD, PhD

University of Wisconsin, Madison

Participant flow

Participants by arm

ArmCount
Weekly Paclitaxel
Paclitaxel 80 mg/m2 will be initiated as standard infusion on days 1, 8, 15 of a 21-day cycle. Participants will continue with paclitaxel 80 mg/m2 for cycles 2-4 prior to surgery. Paclitaxel: Paclitaxel is an FDA approved medication for treatment of curable breast cancer and is available by prescription at pharmacies throughout the United States.
24
Total24

Baseline characteristics

CharacteristicWeekly Paclitaxel
Age, Customized
20-29 years
1 Participants
Age, Customized
30-39 years
4 Participants
Age, Customized
40-49 years
7 Participants
Age, Customized
50-59 years
7 Participants
Age, Customized
60-69 years
2 Participants
Age, Customized
70-79 years
3 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
24 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
0 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
22 Participants
Region of Enrollment
United States
24 participants
Sex: Female, Male
Female
24 Participants
Sex: Female, Male
Male
0 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 24
other
Total, other adverse events
0 / 24
serious
Total, serious adverse events
0 / 24

Outcome results

Primary

Response to Paclitaxel

To test if high cancers with high chromosomal instability (CIN) respond to paclitaxel better than low CIN cancers. Response determined by the percent decrease in linear measurement of tumor size on the greatest dimension per RECIST-like criteria

Time frame: Up to 3 months

Population: Only 12 participants were evaluable because of insufficient specimen.

ArmMeasureValue (MEAN)
Weekly PaclitaxelResponse to Paclitaxel-29.63 percent decrease in tumor size
Secondary

Antimitotic Effects

Compare pre-existing versus post-treatment antimitotic effects at 20 hours after the 1st dose, 20 hours after the 3rd dose, and 20 hours after the 12th dose. This is measured by tissue analysis of tumor samples with phospho-histone H3 and stains for spindle morphology to quantify mitotic index and mitotic characteristics at two time points using paired statistical analysis.

Time frame: Up to 79 days

Population: An increasing smaller subset of participants were biopsied after the first dose.

ArmMeasureGroupValue (NUMBER)
Weekly PaclitaxelAntimitotic EffectsParticipant 935 number of mitotic cells
Weekly PaclitaxelAntimitotic EffectsParticipant 4101 number of mitotic cells
Weekly PaclitaxelAntimitotic EffectsParticipant 116 number of mitotic cells
Weekly PaclitaxelAntimitotic EffectsParticipant 1113 number of mitotic cells
Weekly PaclitaxelAntimitotic EffectsParticipant 1224 number of mitotic cells
Weekly PaclitaxelAntimitotic EffectsParticipant 6106 number of mitotic cells
Weekly PaclitaxelAntimitotic EffectsParticipant 13106 number of mitotic cells
Weekly PaclitaxelAntimitotic EffectsParticipant 3100 number of mitotic cells
Weekly PaclitaxelAntimitotic EffectsParticipant 16106 number of mitotic cells
Weekly PaclitaxelAntimitotic EffectsParticipant 1486 number of mitotic cells
Weekly PaclitaxelAntimitotic EffectsParticipant 1842 number of mitotic cells
Weekly PaclitaxelAntimitotic EffectsParticipant 779 number of mitotic cells
Weekly PaclitaxelAntimitotic EffectsParticipant 15116 number of mitotic cells
Weekly PaclitaxelAntimitotic EffectsParticipant 241 number of mitotic cells
Weekly PaclitaxelAntimitotic EffectsParticipant 875 number of mitotic cells
Weekly PaclitaxelAntimitotic EffectsParticipant 1930 number of mitotic cells
Weekly Paclitaxel - 20 Hours After First DoseAntimitotic EffectsParticipant 1970 number of mitotic cells
Weekly Paclitaxel - 20 Hours After First DoseAntimitotic EffectsParticipant 1109 number of mitotic cells
Weekly Paclitaxel - 20 Hours After First DoseAntimitotic EffectsParticipant 2100 number of mitotic cells
Weekly Paclitaxel - 20 Hours After First DoseAntimitotic EffectsParticipant 3104 number of mitotic cells
Weekly Paclitaxel - 20 Hours After First DoseAntimitotic EffectsParticipant 4103 number of mitotic cells
Weekly Paclitaxel - 20 Hours After First DoseAntimitotic EffectsParticipant 6108 number of mitotic cells
Weekly Paclitaxel - 20 Hours After First DoseAntimitotic EffectsParticipant 7103 number of mitotic cells
Weekly Paclitaxel - 20 Hours After First DoseAntimitotic EffectsParticipant 827 number of mitotic cells
Weekly Paclitaxel - 20 Hours After First DoseAntimitotic EffectsParticipant 963 number of mitotic cells
Weekly Paclitaxel - 20 Hours After First DoseAntimitotic EffectsParticipant 1111 number of mitotic cells
Weekly Paclitaxel - 20 Hours After First DoseAntimitotic EffectsParticipant 1230 number of mitotic cells
Weekly Paclitaxel - 20 Hours After First DoseAntimitotic EffectsParticipant 13110 number of mitotic cells
Weekly Paclitaxel - 20 Hours After First DoseAntimitotic EffectsParticipant 14102 number of mitotic cells
Weekly Paclitaxel - 20 Hours After First DoseAntimitotic EffectsParticipant 15101 number of mitotic cells
Weekly Paclitaxel - 20 Hours After First DoseAntimitotic EffectsParticipant 16104 number of mitotic cells
Weekly Paclitaxel - 20 Hours After First DoseAntimitotic EffectsParticipant 18214 number of mitotic cells
Weekly Paclitaxel - 20 Hours After Third DoseAntimitotic EffectsParticipant 3105 number of mitotic cells
Weekly Paclitaxel - 20 Hours After Third DoseAntimitotic EffectsParticipant 232 number of mitotic cells
Weekly Paclitaxel - 20 Hours After Third DoseAntimitotic EffectsParticipant 1823 number of mitotic cells
Weekly Paclitaxel - 20 Hours After Third DoseAntimitotic EffectsParticipant 1420 number of mitotic cells
Weekly Paclitaxel - 20 Hours After Third DoseAntimitotic EffectsParticipant 13101 number of mitotic cells
Weekly Paclitaxel - 20 Hours After Twelfth DoseAntimitotic EffectsParticipant 188 number of mitotic cells
Secondary

Change in CIN Levels

There are many proposed ways to measure CIN. Here, we used # of multipolar spindles as a surrogate of CIN measures.

Time frame: Baseline and 20 hours post-first dose

Population: Insufficient tissue was collected to complete analysis on remaining participants

ArmMeasureGroupValue (NUMBER)
Weekly PaclitaxelChange in CIN LevelsParticipant 17.08 % of cells with multipolar spindles
Weekly PaclitaxelChange in CIN LevelsParticipant 98.571428571 % of cells with multipolar spindles
Weekly PaclitaxelChange in CIN LevelsParticipant 616.98113208 % of cells with multipolar spindles
Weekly PaclitaxelChange in CIN LevelsParticipant 110 % of cells with multipolar spindles
Weekly PaclitaxelChange in CIN LevelsParticipant 22.44 % of cells with multipolar spindles
Weekly PaclitaxelChange in CIN LevelsParticipant 124.2 % of cells with multipolar spindles
Weekly PaclitaxelChange in CIN LevelsParticipant 73.797468354 % of cells with multipolar spindles
Weekly PaclitaxelChange in CIN LevelsParticipant 135.6 % of cells with multipolar spindles
Weekly PaclitaxelChange in CIN LevelsParticipant 43.96039604 % of cells with multipolar spindles
Weekly PaclitaxelChange in CIN LevelsParticipant 1413.95 % of cells with multipolar spindles
Weekly PaclitaxelChange in CIN LevelsParticipant 85.33333333 % of cells with multipolar spindles
Weekly PaclitaxelChange in CIN LevelsParticipant 153.45 % of cells with multipolar spindles
Weekly PaclitaxelChange in CIN LevelsParticipant 32.44 % of cells with multipolar spindles
Weekly Paclitaxel - 20 Hours After First DoseChange in CIN LevelsParticipant 1560.4 % of cells with multipolar spindles
Weekly Paclitaxel - 20 Hours After First DoseChange in CIN LevelsParticipant 151.38 % of cells with multipolar spindles
Weekly Paclitaxel - 20 Hours After First DoseChange in CIN LevelsParticipant 249 % of cells with multipolar spindles
Weekly Paclitaxel - 20 Hours After First DoseChange in CIN LevelsParticipant 326.92 % of cells with multipolar spindles
Weekly Paclitaxel - 20 Hours After First DoseChange in CIN LevelsParticipant 429.12621359 % of cells with multipolar spindles
Weekly Paclitaxel - 20 Hours After First DoseChange in CIN LevelsParticipant 660.18518519 % of cells with multipolar spindles
Weekly Paclitaxel - 20 Hours After First DoseChange in CIN LevelsParticipant 764.0776699 % of cells with multipolar spindles
Weekly Paclitaxel - 20 Hours After First DoseChange in CIN LevelsParticipant 862.96296296 % of cells with multipolar spindles
Weekly Paclitaxel - 20 Hours After First DoseChange in CIN LevelsParticipant 961.9047619 % of cells with multipolar spindles
Weekly Paclitaxel - 20 Hours After First DoseChange in CIN LevelsParticipant 1127.27 % of cells with multipolar spindles
Weekly Paclitaxel - 20 Hours After First DoseChange in CIN LevelsParticipant 1256.6 % of cells with multipolar spindles
Weekly Paclitaxel - 20 Hours After First DoseChange in CIN LevelsParticipant 1364.5 % of cells with multipolar spindles
Weekly Paclitaxel - 20 Hours After First DoseChange in CIN LevelsParticipant 1458.82 % of cells with multipolar spindles
Secondary

Correlate Drug Levels With Aneuploidy of Tumor

Correlate pathologic response and clinical response with biomarkers including aneuploidy

Time frame: Up to 3 months

Population: This biomarker was not measured

Secondary

Correlate Drug Levels With Chromosomal Instability of Tumor

Correlate pathologic response and clinical response with biomarkers including CIN

Time frame: Up to 3 months

Population: This was not measured

Secondary

Ki67 of Tumor

The Ki-67 protein is a cellular marker for proliferation. Ki-67 is an excellent marker to determine the growth fraction of a given cell population. The fraction of Ki-67-positive tumor cells (the Ki-67 labeling index) is often correlated with the clinical course of cancer.

Time frame: Up to 3 months

Population: Clinical Response reported here.

ArmMeasureGroupValue (NUMBER)
Weekly PaclitaxelKi67 of TumorParticipant 190 Percentage of Ki67 + cells
Weekly PaclitaxelKi67 of TumorParticipant 280 Percentage of Ki67 + cells
Weekly PaclitaxelKi67 of TumorParticipant 390 Percentage of Ki67 + cells
Weekly PaclitaxelKi67 of TumorParticipant 645 Percentage of Ki67 + cells
Weekly PaclitaxelKi67 of TumorParticipant 790 Percentage of Ki67 + cells
Weekly PaclitaxelKi67 of TumorParticipant 860 Percentage of Ki67 + cells
Weekly PaclitaxelKi67 of TumorParticipant 915 Percentage of Ki67 + cells
Weekly PaclitaxelKi67 of TumorParticipant 1120 Percentage of Ki67 + cells
Weekly PaclitaxelKi67 of TumorParticipant 1225 Percentage of Ki67 + cells
Weekly PaclitaxelKi67 of TumorParticipant 1390 Percentage of Ki67 + cells
Weekly PaclitaxelKi67 of TumorParticipant 1460 Percentage of Ki67 + cells
Weekly PaclitaxelKi67 of TumorParticipant 1560 Percentage of Ki67 + cells
Secondary

Mitotic Index

The mitotic index is a measure of cells arresting in mitosis, previously thought to be the major mechanism of taxol action. It is defined as the percentage of cells undergoing mitosis in a given population of cells. An elevated mitotic index indicates more cells are at this phase of the cell cycle at the time of sampling.

Time frame: Baseline and 20 hours post-first dose

Population: Clinical Response reported here.

ArmMeasureGroupValue (NUMBER)
Weekly PaclitaxelMitotic IndexParticipant 80.6 mitotic index
Weekly PaclitaxelMitotic IndexParticipant 41.8 mitotic index
Weekly PaclitaxelMitotic IndexParticipant 91.466667 mitotic index
Weekly PaclitaxelMitotic IndexParticipant 110.198311 mitotic index
Weekly PaclitaxelMitotic IndexParticipant 11.4 mitotic index
Weekly PaclitaxelMitotic IndexParticipant 120.32 mitotic index
Weekly PaclitaxelMitotic IndexParticipant 61.052765 mitotic index
Weekly PaclitaxelMitotic IndexParticipant 132 mitotic index
Weekly PaclitaxelMitotic IndexParticipant 31.35 mitotic index
Weekly PaclitaxelMitotic IndexParticipant 141.48 mitotic index
Weekly PaclitaxelMitotic IndexParticipant 71.2 mitotic index
Weekly PaclitaxelMitotic IndexParticipant 151.33 mitotic index
Weekly PaclitaxelMitotic IndexParticipant 21 mitotic index
Weekly Paclitaxel - 20 Hours After First DoseMitotic IndexParticipant 155.56 mitotic index
Weekly Paclitaxel - 20 Hours After First DoseMitotic IndexParticipant 12.6 mitotic index
Weekly Paclitaxel - 20 Hours After First DoseMitotic IndexParticipant 23.379722 mitotic index
Weekly Paclitaxel - 20 Hours After First DoseMitotic IndexParticipant 34.4 mitotic index
Weekly Paclitaxel - 20 Hours After First DoseMitotic IndexParticipant 43.192745 mitotic index
Weekly Paclitaxel - 20 Hours After First DoseMitotic IndexParticipant 62.305837 mitotic index
Weekly Paclitaxel - 20 Hours After First DoseMitotic IndexParticipant 73.201638 mitotic index
Weekly Paclitaxel - 20 Hours After First DoseMitotic IndexParticipant 81.29731 mitotic index
Weekly Paclitaxel - 20 Hours After First DoseMitotic IndexParticipant 110.32 mitotic index
Weekly Paclitaxel - 20 Hours After First DoseMitotic IndexParticipant 121.44 mitotic index
Weekly Paclitaxel - 20 Hours After First DoseMitotic IndexParticipant 134.2 mitotic index
Weekly Paclitaxel - 20 Hours After First DoseMitotic IndexParticipant 142.87 mitotic index
Weekly Paclitaxel - 20 Hours After First DoseMitotic IndexParticipant 91.872558 mitotic index
Secondary

Non-Tumor Level Difference of Paclitaxel

Identify patient-specific differences in non-tumor (plasma) levels of paclitaxel at 20 hours after first dose. This is measured by high-performance liquid chromatography of tumor and plasma samples and comparing variability between patients with descriptive statistics.

Time frame: Up to 1 day

Population: Participant 10 withdrew consent

ArmMeasureGroupValue (NUMBER)
Weekly PaclitaxelNon-Tumor Level Difference of PaclitaxelParticipant 10.023 micromolar
Weekly PaclitaxelNon-Tumor Level Difference of PaclitaxelParticipant 20.040 micromolar
Weekly PaclitaxelNon-Tumor Level Difference of PaclitaxelParticipant 30.030 micromolar
Weekly PaclitaxelNon-Tumor Level Difference of PaclitaxelParticipant 40.027 micromolar
Weekly PaclitaxelNon-Tumor Level Difference of PaclitaxelParticipant 50.031 micromolar
Weekly PaclitaxelNon-Tumor Level Difference of PaclitaxelParticipant 60.020 micromolar
Weekly PaclitaxelNon-Tumor Level Difference of PaclitaxelParticipant 70.013 micromolar
Weekly PaclitaxelNon-Tumor Level Difference of PaclitaxelParticipant 80.011 micromolar
Weekly PaclitaxelNon-Tumor Level Difference of PaclitaxelParticipant 90.020 micromolar
Weekly PaclitaxelNon-Tumor Level Difference of PaclitaxelParticipant 110.038 micromolar
Weekly PaclitaxelNon-Tumor Level Difference of PaclitaxelParticipant 120.040 micromolar
Weekly PaclitaxelNon-Tumor Level Difference of PaclitaxelParticipant 130.094 micromolar
Weekly PaclitaxelNon-Tumor Level Difference of PaclitaxelParticipant 140.048 micromolar
Weekly PaclitaxelNon-Tumor Level Difference of PaclitaxelParticipant 150.035 micromolar
Secondary

Paclitaxel Levels

Paclitaxel levels at the first dose, 20 hours after the 3rd dose, and 20 hours after the 12th dose. This is measured by high-performance liquid chromatography of tumor and plasma samples and comparing difference at two time points within the same patient with paired statistics.

Time frame: Up to 79 days

ArmMeasureGroupValue (MEAN)
Weekly PaclitaxelPaclitaxel LevelsFirst dose plasma paclitaxel0.041 micromolars
Weekly PaclitaxelPaclitaxel LevelsThird dose plasma paclitaxel0.029 micromolars
Weekly PaclitaxelPaclitaxel LevelsFirst dose intratumoral paclitaxel0.785 micromolars
Weekly PaclitaxelPaclitaxel LevelsThird dose intratumoral paclitaxel1.21 micromolars
Secondary

Tumor Level Difference of Paclitaxel

Identify patient-specific differences in tumor levels of paclitaxel at 20 hours after first dose. This is measured by high-performance liquid chromatography of tumor and plasma samples and comparing variability between patients with descriptive statistics.

Time frame: Up to 1 day

Population: Participant 10 withdrew consent.

ArmMeasureGroupValue (NUMBER)
Weekly PaclitaxelTumor Level Difference of PaclitaxelParticipant 11.07 micromolar
Weekly PaclitaxelTumor Level Difference of PaclitaxelParticipant 20.34 micromolar
Weekly PaclitaxelTumor Level Difference of PaclitaxelParticipant 30.80 micromolar
Weekly PaclitaxelTumor Level Difference of PaclitaxelParticipant 40.57 micromolar
Weekly PaclitaxelTumor Level Difference of PaclitaxelParticipant 63.43 micromolar
Weekly PaclitaxelTumor Level Difference of PaclitaxelParticipant 71.55 micromolar
Weekly PaclitaxelTumor Level Difference of PaclitaxelParticipant 80.53 micromolar
Weekly PaclitaxelTumor Level Difference of PaclitaxelParticipant 90.63 micromolar
Weekly PaclitaxelTumor Level Difference of PaclitaxelParticipant 110.57 micromolar
Weekly PaclitaxelTumor Level Difference of PaclitaxelParticipant 131.67 micromolar
Weekly PaclitaxelTumor Level Difference of PaclitaxelParticipant 140.52 micromolar
Weekly PaclitaxelTumor Level Difference of PaclitaxelParticipant 151.20 micromolar
Weekly PaclitaxelTumor Level Difference of PaclitaxelParticipant 5NA micromolar
Weekly PaclitaxelTumor Level Difference of PaclitaxelParticipant 12NA micromolar

Source: ClinicalTrials.gov · Data processed: Jun 17, 2026