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Trial · NCT01306942

Registered outcomes20

Each outcome the trial registered, primary first, in ClinicalTrials.gov's words.

ListOutcomeTime frameDescription
PrimaryNumber of Participants With Dose Limiting Toxicity (DLT) Within the First Cycle of Dasatinib in Combination With Trastuzumab and Paclitaxel (Phase I)Up to cycle 1
DLT was defined as the occurrence of any of the following adverse events or abnormal laboratory value (graded according to the NCI Common Terminology Criteria for Adverse Events (CTCAE) version 4.03), assessed as possibly, probably or definitively related to study drugs, occurring within the first cycle of study treatment: Need of any dose modification within the first cycle due to toxicity, grade 3 or 4 neutropenia complicated with fever ≥38.5° C or infection, grade 4 neutropenia (absolute neutrophil count (ANC)\<0.5x1000000000/L) of at least 7 days duration, grade 3 thrombocytopenia complicated by hemorrhage, grade 4 thrombocytopenia, any grade 4 non-hematologic toxicity, grade 3 non-hematologic toxicities except nausea, vomiting, or diarrhea that can be controlled by appropriate medical intervention or prophylaxis, inability to resume dosing for cycle 2 at the current dose level within 14 days due to treatment related toxicity.
PrimaryMaximum Tolerated Dose (MTD) of Dasatinib in Combination With Trastuzumab and Paclitaxel (Phase I)Up to cycle 1
MTD is determined by testing increasing doses of dasatinib on dose escalation cohorts 3 to 6 patients per dose level. MTD reflects the highest dose tested in which a DLT is experienced by 0 out of 3 or 1 out of 6 patients among the dose levels
PrimaryRecommended Phase II Dose (RP2D) of Dasatinib in Combination With Trastuzumab and Paclitaxel (Phase I).Up to cycle 1
The RP2D was decided by the investigators taken into consideration the information obtained in the study and based on the MTD. To define the RP2D, information about toxicity observed during the full treatment were taken into consideration (relative dose intensity and toxicity observed).
PrimaryObjective Response Rate (ORR)Through study treatment, an average of 24 months
Tumor response was assessed using Response Evaluation Criteria In Solid Tumors Criteria (RECIST 1.1) criteria. ORR is defined as the percentage of patients with a Complete Response (CR) or Partial Response (PR) out of the patients who had measurable disease at baseline. Per RECIST, Complete Response (CR) is defined as the disappearance of all target lesions; Partial Response (PR) is defined as an \>=30% decrease in the sum of the longest diameter of target lesions; Overall Response (OR) = CR + PR.
SecondaryThe Number of Participants Who Experienced Adverse Events (AE)Through study treatment, an average of 24 months
Safety was assessed by standard clinical (blood pressure, pulse and body temperature, electrocardiogram (ECG), left ventricular ejection fraction (LVEF)) and laboratory tests (hematology: hemoglobin, platelet count, red blood cells (RBC), white blood cells (WBC) with differential (neutrophils) and absolute lymphocyte count, and serum chemistry: alkaline phosphatase, alanine aminotransferase (ALT), aspartate aminotransferase (AST), total bilirubin, creatinine, sodium, potassium, magnesium, phosphate and calcium). Adverse events grade were defined by the NCI CTCAE v 4.03.
SecondaryTo Evaluate the Clinical Benefit Rate (CBR)Through study treatment, an average of 24 months
Tumor response was assessed using Response Evaluation Criteria In Solid Tumors Criteria (RECIST 1.1) criteria. CBR is defined as the percentage of patients with a Complete Response (CR) or Partial Response (PR) plus stable disease lasting at least 6 months out of the efficacy population. Per RECIST, CR is defined as the disappearance of all target lesions; PR is defined as an \>=30% decrease in the sum of the longest diameter of target lesions; Overall Response (OR) = CR + PR.
SecondaryTime to Progression (TTP)Through study treatment, an average of 24 months
TTP is defined as the time from the date of the first dose to the first date of objectively determined progressive disease. For patients not known to have objectively-determined progressive disease, TTP will be censored at the date of the last objective progression-free assessment. For patients who receive subsequent systemic anticancer therapy (after discontinuation from the study treatment) prior to objective disease progression, TTP will be censored at the date of last objective progression-free assessment prior to the initiation of post-discontinuation systemic anticancer therapy.
SecondaryProgression Free Survival (PFS)Through study treatment, an average of 24 months
PFS is defined as the time from the date of the first dose to the first date of objectively determined progressive disease or death from any cause. For patients not known to have died as of the data cut-off date and who do not have objectively-determined progressive disease, PFS will be censored at the date of the last objective progression-free assessment. For patients who receive subsequent systemic anticancer therapy (after discontinuation from the study treatment) prior to objective disease progression or death, PFS will be censored at the date of last objective progression-free assessment prior to the initiation of post-discontinuation systemic anticancer therapy.
SecondaryResponse Duration (RD)Through study treatment, an average of 24 months
Tumor response was assessed using Response Evaluation Criteria In Solid Tumors Criteria (RECIST 1.1) criteria. RD is defined as the time from the date when the measurement criteria are met for complete response (CR) or partial response (PR) (whichever status is recorded first) until the date of first observation of disease progression or death occurred. Per RECIST, CR is defined as the disappearance of all target lesions; PR is defined as an \>=30% decrease in the sum of the longest diameter of target lesions. For responding patients not known to have died as of the data cut-off date and who do not have progression, RD will be censored at the date of last visit with adequate assessment. For responding patients who receive subsequent anticancer therapy (after discontinuation from the study treatment) prior to progression, RD will be censored at the date of last visit with adequate assessment prior to the initiation of post-discontinuation anticancer therapy.
SecondaryDasatinib Maximun Plasma Concentration (Cmax) Value (Pharmacokinetics (PK) Phase I)Cycle 1 day 2 and day 18
To assess the influence of the concomitant administration of paclitaxel and trastuzumab on dasatinib PKs, we compared dasatinib exposures alone (first PK occasion: day 2 of cycle 1) or combined (second PK occasion: day 18 on cycle 1). The mean profiles of dasatinib plasma concentrations were determined by dose and PK occasion.
SecondaryDasatinib Area Under the Plasma Concentration-time Curve (AUC) Value (Pharmacokinetics (PK) Phase I)Cycle 1 day 2 and day 18
To assess the influence of the concomitant administration of paclitaxel and trastuzumab on dasatinib PKs, we compared dasatinib exposures alone (first PK occasion: day 2 of cycle 1) or combined (second PK occasion: day 18 on cycle 1). The area under the plasma concentration-time curve from time zero to 8 hours post dose (AUC0-8) were calculated in all treated patients, as the dasatinib plasmatic half-life is very short and concentrations at 24 hours post dose could only be quantified in some patients.
SecondaryPhosphorylated SRC (p-SRC) Protein Expression Change in Peripheral Blood Mononuclear Cells After 8 Hours of Treatment (Phase II)Cycle 1 day 1 at 0 hours and at 8 hours
Sequential peripheral blood mononuclear cells (PBMCs) on Cycle 1 Day 1 before treatment and 8 hours (h) after treatment (0h and 8h) were assessed to explore changes in the expression of p-SRC proteins measured by enzyme-linked immunosorbent assay (ELISA). For ELISA analyses, a duplicate of 100 µg of the extract was used to detect p-SRC (Tyr416). ELISA is a plate-based assay technique designed for detecting and quantifying proteins. The instrumentation used for protein signal-detection is an absorbance spectrophotometer (AS), which measures Absorbance (A). A is the quantity of light absorbed by a sample. As different compounds absorb light at different wavelengths, an AS can be used to distinguish compounds by analyzing the pattern of wavelengths absorbed by a given sample. Additionally, the amount of light absorbed is directly proportional to the concentration of absorbing compounds in that sample, so an AS can also be used to determine concentrations of compounds in the sample.
SecondaryPhosphorylated AKT (p-AKT) Protein Expression Change in Peripheral Blood Mononuclear Cells After 8 Hours of Treatment (Phase II)Cycle 1 day 1 at 0 hours and at 8 hours
Sequential peripheral blood mononuclear cells (PBMCs) on Cycle 1 Day 1 before treatment and 8 hours (h) after treatment (0h and 8h) were assessed to explore changes in the expression of p-AKT proteins measured by enzyme-linked immunosorbent assay (ELISA). For ELISA analyses, a duplicate of 100 µg of the extract was used to detect p-AKT (Ser473). ELISA is a plate-based assay technique designed for detecting and quantifying proteins. The instrumentation used for protein signal-detection is an absorbance spectrophotometer (AS), which measures Absorbance (A). A is the quantity of light absorbed by a sample. As different compounds absorb light at different wavelengths, an AS can be used to distinguish compounds by analyzing the pattern of wavelengths absorbed by a given sample. Additionally, the amount of light absorbed is directly proportional to the concentration of absorbing compounds in that sample, so an AS can also be used to determine concentrations of compounds in the sample.
SecondaryPhosphorylation Status of Phosphorylated SRC (p-SRC) in Skin After Treatment (Phase I)Cycle 1 day 1 at 0 hours and at 8 hours, cycle 1 day 4 and cycle 2 day 1
p-SRC was analyzed in the skin biopsies taken at cycle 1 day 1 at 0 hours and 8 hours, cycle 1 day 4 and cycle 2 day 1, only in patients accepting to participate. A semi-quantitative H-score (or "histo" score) determined by the estimation of the percentage of tumour cells positively stained with low, medium, or high staining intensity. The final score is determined after applying a weighting factor to each estimate. The formula used is H-score = (low %) × 1 + (medium %) × 2 + (high %) × 3, and the results ranged from minimum 0 to maximum 300. Aim: to confirm the mechanism of action identified in preclinical models where the combination of dasatinib and trastuzumab show a statistically significant reduction in the phosphorylated levels of SRC.
SecondaryPhosphorylation Status of Phosphorylated SRC (p-SRC) in Skin After Treatment (Phase II)Cycle 1 day 1 at 0 hours and at 8 hours
p-SRC was analyzed in the skin biopsies taken at cycle 1 day 1 at 0 hours and 8 hours, only in patients accepting to participate. A semi-quantitative H-score (or "histo" score) determined by the estimation of the percentage of tumour cells positively stained with low, medium, or high staining intensity. The final score is determined after applying a weighting factor to each estimate. The formula used is H-score = (low %) × 1 + (medium %) × 2 + (high %) × 3, and the results ranged from minimum 0 to maximum 300. Aim: to confirm the mechanism of action identified in preclinical models where the combination of dasatinib and trastuzumab show a statistically significant reduction in the phosphorylated levels of SRC.
SecondaryPhosphorylation Status of Phosphorylated AKT (p-AKT) in Skin After Treatment (Phase I)Cycle 1 day 1 at 0 hours and at 8 hours and cycle 2 day 1
p-AKT was analyzed in the skin biopsies taken at cycle 1, day 1 at 0 hours and 8 hours, and cycle 2 day 1, only in patients accepting to participate. A semi-quantitative H-score (or "histo" score) determined by the estimation of the percentage of tumour cells positively stained with low, medium, or high staining intensity. The final score is determined after applying a weighting factor to each estimate. The formula used is H-score = (low %) × 1 + (medium %) × 2 + (high %) × 3, and the results ranged from minimum 0 to maximum 300. Aim: to confirm the mechanism of action identified in preclinical models where the combination of dasatinib and trastuzumab show a statistically significant reduction in the phosphorylated levels of AKT
SecondaryPhosphorylation Status of Phosphorylated AKT (p-AKT) in Skin After Treatment (Phase II)Cycle 1 day 1 at 0 hours and at 8 hours
p-AKT was analyzed in the skin biopsies taken at cycle 1, day 1 at 0 hours and 8 hours, only in patients accepting to participate. A semi-quantitative H-score (or "histo" score) determined by the estimation of the percentage of tumour cells positively stained with low, medium, or high staining intensity. The final score is determined after applying a weighting factor to each estimate. The formula used is H-score = (low %) × 1 + (medium %) × 2 + (high %) × 3, and the results ranged from minimum 0 to maximum 300. Aim: to confirm the mechanism of action identified in preclinical models where the combination of dasatinib and trastuzumab show a statistically significant reduction in the phosphorylated levels of AKT
SecondaryPhosphorylation Status of Phosphorylated ERK (p-ERK) in Skin After Treatment (Phase I)Cycle 1 day 1 at 0 hours and at 8 hours, cycle 1 day 4 at 8 hours and cycle 2 day 1 at 8 hours
p-ERK was analyzed in the skin biopsies taken at cycle 1 day 1 at 0 hours and 8 hours, cycle 1 day 4 at 8 hours, and cycle 2 day 1 at 8 hours, only in patients accepting to participate. A semi-quantitative H-score (or "histo" score) determined by the estimation of the percentage of tumour cells positively stained with low, medium, or high staining intensity. The final score is determined after applying a weighting factor to each estimate. The formula used is H-score = (low %) × 1 + (medium %) × 2 + (high %) × 3, and the results ranged from minimum 0 to maximum 300. Aim: to confirm the mechanism of action identified in preclinical models where the combination of dasatinib and trastuzumab show a statistically significant reduction in the phosphorylated levels of ERK
SecondaryPhosphorylation Status of Phosphorylated ERK (p-ERK) in Skin After Treatment (Phase II)Cycle 1 day 1 at 0 hours and at 8 hours
Phosphorylated extracellular signal-regulated kinases (p-ERK) 1 and 2 expression were analyzed in the skin biopsies taken at the cycle 1 day 1 at 0 hours and 8 hours, only in patients accepting to participate. A semi-quantitative H-score (or "histo" score) determined by the estimation of the percentage of tumour cells positively stained with low, medium, or high staining intensity. The final score is determined after applying a weighting factor to each estimate. The formula used is H-score = (low %) × 1 + (medium %) × 2 + (high %) × 3, and the results ranged from minimum 0 to maximum 300. Aim: to confirm the mechanism of action identified in preclinical models where the combination of dasatinib and trastuzumab show a statistically significant reduction in the phosphorylated levels of ERK
SecondaryNumber of Participants With Correlation Between Lymphocytosis and Efficacy.Cycle 1
Efficacy (ORR, CBR, TTP, RD and PFS) was assessed using Response Evaluation Criteria In Solid Tumors Criteria (RECIST 1.1) criteria, and were correlated Lymphocytes, that were measured in the weekly hematology analyses performed within the first cycle.

Source ClinicalTrials.govtrials-2026-11-12-0.5.0

Sources 3

  • ClinicalTrials.gov's posted results, through CTTI's AACTFreely available. Acknowledgement requested
  • ClinicalTrials.govNo license stated
  • NIH RePORTER's clinical studies and project filesPublic domain
Each source's terms
  • ClinicalTrials.gov's posted results, through CTTI's AACTClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299
  • ClinicalTrials.govnone stated
  • NIH RePORTER's clinical studies and project filesPublic domain (NIH RePORTER)

ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions.

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