A Study of Tucatinib (MK-7119) in Combination With Trastuzumab and Capecitabine in Participants With Previously Treated Locally Advanced Unresectable or Metastatic Human Epidermal Growth Factor Receptor 2 Positive (HER2+) Breast Carcinoma (MK-7119-001)

December 16, 2025 updated by: Pfizer

A Phase 2 Open-label, Single Arm Study of MK-7119 in Combination With Trastuzumab and Capecitabine in Participants With Previously Treated Locally Advanced Unresectable or Metastatic HER2+ Breast Carcinoma

The goal of this study is to evaluate the efficacy and safety of tucatinib in combination with trastuzumab and capecitabine in participants with unresectable locally advanced or metastatic HER2+ breast cancer who have had prior treatment with taxane anti-cancer agent, trastuzumab, pertuzumab and trastuzumab emtansine (T-DM1). The primary hypothesis is that the confirmed objective response rate (cORR) per Response Evaluation Criteria in Solid Tumors version 1.1 (RECIST v1.1) as determined by independent central review (ICR) for the combination of tucatinib, trastuzumab and capecitabine, is greater than 20%.

Study Overview

Status

Active, not recruiting

Conditions

Study Type

Interventional

Enrollment (Actual)

66

Phase

  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

      • Fukuoka, Japan, 811-1395
        • National Hospital Organization Kyushu Cancer Center ( Site 1009)
      • Fukushima, Japan, 960-1295
        • Fukushima Medical University Hospital ( Site 1012)
      • Hiroshima, Japan, 730-8518
        • Hiroshima City Hiroshima Citizens Hospital ( Site 1024)
      • Kagoshima, Japan, 892-0833
        • Social medical corporation Hakuaikai Sagara Hospital ( Site 1008)
      • Kumamoto, Japan, 862-8655
        • Kumamoto Shinto General Hospital ( Site 1007)
      • Osaka, Japan, 540-0006
        • National Hospital Organization Osaka National Hospital ( Site 1001)
      • Osaka, Japan, 541-8567
        • Osaka International Cancer Institute ( Site 1004)
      • Tokyo, Japan, 104-0045
        • National Cancer Center Hospital ( Site 1003)
      • Tokyo, Japan, 113-0033
        • Juntendo University Hospital ( Site 1025)
      • Tokyo, Japan, 135-8550
        • The Cancer Institute Hospital of JFCR ( Site 1015)
      • Tokyo, Japan, 142-8666
        • Showa University Hospital ( Site 1023)
      • Tokyo, Japan, 160-0023
        • Tokyo Medical University Hospital ( Site 1006)
    • Aichi-ken
      • Nagoya, Aichi-ken, Japan, 464-8681
        • Aichi Cancer Center Hospital ( Site 1013)
      • Nagoya, Aichi-ken, Japan, 466-8560
        • Nagoya University Hospital ( Site 1021)
    • Chiba
      • Kashiwa, Chiba, Japan, 2778577
        • National Cancer Center Hospital East ( Site 1002)
    • Ehime
      • Matsuyama, Ehime, Japan, 791-0280
        • National Hospital Organization Shikoku Cancer Center ( Site 1014)
    • Hokkaido
      • Sapporo, Hokkaido, Japan, 003-0804
        • National Hospital Organization Hokkaido Cancer Center ( Site 1017)
      • Sapporo, Hokkaido, Japan, 060-8648
        • Hokkaido University Hospital ( Site 1022)
    • Hyōgo
      • Akashi, Hyōgo, Japan, 673-8558
        • Hyogo Cancer Center ( Site 1005)
      • Nishinomiya, Hyōgo, Japan, 663-8501
        • Hyogo College of Medicine Hospital ( Site 1019)
    • Ibaraki
      • Tsukuba, Ibaraki, Japan, 305-8576
        • University of Tsukuba Hospital ( Site 1020)
    • Kanagawa
      • Yokohama, Kanagawa, Japan, 241-8515
        • Kanagawa Cancer Center ( Site 1010)
    • Okinawa
      • Naha, Okinawa, Japan, 901-0154
        • Medical Corporation Nahanishikai Nahanishi Clinic ( Site 1016)
    • Saitama
      • Kitaadachi-gun, Saitama, Japan, 362-0806
        • Saitama Cancer Center ( Site 1018)
      • Seoul, South Korea, 03080
        • Seoul National University Hospital ( Site 2003)
      • Seoul, South Korea, 03722
        • Severance Hospital ( Site 2001)
      • Seoul, South Korea, 06351
        • Samsung Medical Center ( Site 2002)
    • Tainan
      • Dawan, Tainan, Taiwan, 704
        • National Cheng Kung University Hospital ( Site 3000)

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

20 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Has histologically confirmed HER2+ breast carcinoma
  • Has received previous treatment with taxane anti-cancer agent, trastuzumab, pertuzumab, and T-DM1 with the exception of when the use of taxanes is contraindicated or judged not to be the best treatment at the investigator's discretion
  • Has radiographically and/or histologically confirmed disease progression on last systemic anticancer treatment
  • Has adequate organ function
  • Female participant is not pregnant or breastfeeding and is not a woman of childbearing potential (WOCBP) or is a WOCBP and using contraception or abstinent from heterosexual intercourse during the intervention period and for at least 30 days after receiving the last dose of tucatinib, 80 days after receiving the last dose of trastuzumab, or 180 days after receiving the last dose of capecitabine, whichever occurs last and agrees to not donate eggs during this period
  • Male participants refrain from donating sperm and are either abstinent from heterosexual intercourse or agree to use contraception during the intervention period and for at least 7 days after receiving the last dose of tucatinib and 90 days after receiving the last dose of capecitabine, whichever occurs last
  • Previously treated brain metastasis is stable or progressed, provided there is no clinical indication for immediate re-treatment

Exclusion Criteria:

  • Has been previously treated with lapatinib within 12 months of starting study treatment
  • Has been previously treated with neratinib, afatinib, tucatinib or capecitabine
  • Has a history of exposure to doxorubicin, epirubicin, mitoxantrone, idarubicin, liposomal doxorubicin
  • Has had treatment with any systemic anti-cancer therapy including hormonal therapy, non-central nervous system (CNS) radiation or experimental agent ≤3 weeks before first dose of study treatment
  • Has any toxicity related to prior cancer therapies that has not resolved with the exception of alopecia, congestive heart failure, anemia
  • Has clinically significant cardiopulmonary disease
  • Has known myocardial infarction or unstable angina within 6 months prior to the first dose of study treatment
  • Has any uncontrolled viral, bacterial or fungal infection within 14 days prior to the first dose of study treatment
  • Is positive for Hepatitis B, Hepatitis C or has known chronic liver disease
  • Is known to be positive for human immunodeficiency virus (HIV)
  • Has evidence within 2 years of the start of study treatment of another malignancy that required systemic treatment
  • Has ongoing use of systemic corticosteroids for control of symptoms of brain metastases
  • Has any brain lesion thought to require immediate local therapy
  • Has known or suspected leptomeningeal disease (LMD)
  • Has poorly controlled generalized or complex partial seizures or manifest neurologic progression due to brain metastases

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Tucatinib + Trastuzumab + Capecitabine
Participants will receive tucatinib plus trastuzumab plus capecitabine. Tucatinib 300 mg will be administered orally twice daily (BID). Trastuzumab 8 mg/kg loading dose followed by 6 mg/kg maintenance dose thereafter, will be administered intravenously (IV) on Day 1 of each 21-day cycle. Capecitabine 1000 mg/m^2 will be administered orally BID on Days 1-14 of each 21-day cycle. Tucatinib, trastuzumab and capecitabine treatment will continue until unacceptable toxicity, disease progression, death, withdrawal of consent or study closure.
Tucatinib 300 mg administered BID via oral tablet
Other Names:
  • MK-7119
  • Tukysa
Trastuzumab 8 mg/kg loading dose followed by 6 mg/kg maintenance dose, administered via IV infusion
Other Names:
  • Herceptin
  • Herceptin Hylecta
Capecitabine 1000 mg/m^2 administered BID via oral tablet
Other Names:
  • Xeloda

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Confirmed Objective Response Rate(cORR) Per Response Evaluation Criteria in Solid Tumors (RECIST) Version 1.1 Determined by Independent Central Review (ICR): Japanese Participants
Time Frame: From date of first dose until first documented disease progression or start of new anticancer therapy, whichever occurred first (maximum up to 17.8 months)
cORR was defined as percentage of participants with confirmed complete response (CR) or partial response (PR), per RECIST version 1.1. CR: disappearance of all target lesions. Any pathological lymph nodes must have a reduction in short axis to <10 millimeter(mm). PR: a >=30% decrease in the sum of diameters of target lesions, taking as a reference the baseline sum diameters. Only response assessments before first documented progressive disease(PD) or new anti-cancer therapies were considered. PD: at least a 20% increase in sum of diameters of target lesions, taking as reference the smallest sum on study(included baseline sum if smallest on study). In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. Appearance of one or more new lesions was also considered PD. Participants with missing data were considered non-responders. cORR was determined by ICR. Two-sided 90% exact confidence interval was based on Clopper-Pearson method.
From date of first dose until first documented disease progression or start of new anticancer therapy, whichever occurred first (maximum up to 17.8 months)

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Confirmed Objective Response Rate(cORR) Per RECIST Version 1.1 Determined by ICR: All Participants
Time Frame: From date of first dose until first documented disease progression or start of new anticancer therapy, whichever occurred first
cORR was defined as percentage of participants with confirmed CR or PR, per RECIST version 1.1. CR: disappearance of all target lesions. Any pathological lymph nodes must have a reduction in short axis to <10 mm. PR: a >=30% decrease in the sum of diameters of target lesions, taking as a reference the baseline sum diameters. Only response assessments before first documented PD or new anti-cancer therapies were considered. PD: at least a 20% increase in sum of diameters of target lesions, taking as reference the smallest sum on study (included baseline sum if smallest on study). In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. Appearance of one or more new lesions was also considered PD. Participants with missing data were considered non-responders. cORR was determined by ICR. Two-sided 90% exact confidence interval was based on Clopper-Pearson method.
From date of first dose until first documented disease progression or start of new anticancer therapy, whichever occurred first
Confirmed Objective Response Rate(cORR) Per RECIST Version 1.1 Determined by Investigator Assessment (INV): Japanese Participants
Time Frame: From date of first dose until first documented disease progression or start of new anticancer therapy, whichever occurred first
cORR was defined as percentage of participants with confirmed CR or PR, per RECIST version 1.1. CR: disappearance of all target lesions. Any pathological lymph nodes must have a reduction in short axis to <10 mm. PR: a >=30% decrease in the sum of diameters of target lesions, taking as a reference the baseline sum diameters. Only response assessments before first documented PD or new anti-cancer therapies were considered. PD: at least a 20% increase in sum of diameters of target lesions, taking as reference the smallest sum on study (included baseline sum if smallest on study). In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. Appearance of one or more new lesions was also considered PD. Participants with missing data were considered non-responders. cORR was determined by INV. Two-sided 90% exact confidence interval was based on Clopper-Pearson method.
From date of first dose until first documented disease progression or start of new anticancer therapy, whichever occurred first
Confirmed Objective Response Rate(cORR) Per RECIST Version 1.1 Determined by INV: All Participants
Time Frame: From date of first dose until first documented disease progression or start of new anticancer therapy, whichever occurred first
cORR was defined as percentage of participants with confirmed CR or PR, per RECIST version 1.1. CR: disappearance of all target lesions. Any pathological lymph nodes must have a reduction in short axis to <10 mm. PR: a >=30% decrease in the sum of diameters of target lesions, taking as a reference the baseline sum diameters. Only response assessments before first documented PD or new anti-cancer therapies were considered. PD: at least a 20% increase in sum of diameters of target lesions, taking as reference the smallest sum on study (included baseline sum if smallest on study). In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. Appearance of one or more new lesions was also considered PD. Participants with missing data were considered non-responders. cORR was determined by ICR. Two-sided 90% exact confidence interval was based on Clopper-Pearson method.
From date of first dose until first documented disease progression or start of new anticancer therapy, whichever occurred first
Duration of Response (DOR) Per RECIST Version 1.1 Determined by INV: All Participants
Time Frame: From date of first objective response (CR or PR that is subsequently confirmed) to documented PD, or death from any cause whichever occurred first
DOR was defined as the time from the first objective response (CR or PR that is subsequently confirmed) to documented PD per RECIST version 1.1 or death from any cause, whichever occurred first. CR: disappearance of all target lesions. Any pathological lymph nodes must have a reduction in short axis to <10 mm. PR: a >=30% decrease in the sum of diameters of target lesions, taking as a reference the baseline sum diameters. Only response assessments before first documented PD or new anti-cancer therapies were considered. PD: at least a 20% increase in sum of diameters of target lesions, taking as reference the smallest sum on study (included baseline sum if smallest on study). In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. Appearance of one or more new lesions was also considered PD. Only those participants who achieved a confirmed response will be included in the analysis. DOR was determined by INV.
From date of first objective response (CR or PR that is subsequently confirmed) to documented PD, or death from any cause whichever occurred first
Duration of Response (DOR) Per RECIST Version 1.1 Determined by INV: Japanese Participants
Time Frame: From date of first objective response (CR or PR that is subsequently confirmed) to documented PD, or death from any cause whichever occurred first
DOR was defined as the time from the first objective response (CR or PR that is subsequently confirmed) to documented PD per RECIST version 1.1 or death from any cause, whichever occurred first. CR: disappearance of all target lesions. Any pathological lymph nodes must have a reduction in short axis to <10 mm. PR: a >=30% decrease in the sum of diameters of target lesions, taking as a reference the baseline sum diameters. Only response assessments before first documented PD or new anti-cancer therapies were considered. PD: at least a 20% increase in sum of diameters of target lesions, taking as reference the smallest sum on study (included baseline sum if smallest on study). In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. Appearance of one or more new lesions was also considered PD. Only those participants who achieved a confirmed response will be included in the analysis. DOR was determined by INV.
From date of first objective response (CR or PR that is subsequently confirmed) to documented PD, or death from any cause whichever occurred first
Duration of Response (DOR) Per RECIST Version 1.1 Determined by ICR: All Participants
Time Frame: From date of first objective response (CR or PR that is subsequently confirmed) to documented PD, or death from any cause whichever occurred first
DOR was defined as the time from the first objective response (CR or PR that is subsequently confirmed) to documented PD per RECIST version 1.1 or death from any cause, whichever occurred first. CR: disappearance of all target lesions. Any pathological lymph nodes must have a reduction in short axis to <10 mm. PR: a >=30% decrease in the sum of diameters of target lesions, taking as a reference the baseline sum diameters. Only response assessments before first documented PD or new anti-cancer therapies were considered. PD: at least a 20% increase in sum of diameters of target lesions, taking as reference the smallest sum on study (included baseline sum if smallest on study). In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. Appearance of one or more new lesions was also considered PD. Only those participants who achieved a confirmed response will be included in the analysis. DOR was determined by ICR.
From date of first objective response (CR or PR that is subsequently confirmed) to documented PD, or death from any cause whichever occurred first
Duration of Response (DOR) Per RECIST Version 1.1 Determined by ICR: Japanese Participants
Time Frame: From date of first objective response (CR or PR that is subsequently confirmed) to documented PD, or death from any cause whichever occurred first
DOR was defined as the time from the first objective response (CR or PR that is subsequently confirmed) to documented PD per RECIST version 1.1 or death from any cause, whichever occurred first. CR: disappearance of all target lesions. Any pathological lymph nodes must have a reduction in short axis to <10 mm. PR: a >=30% decrease in the sum of diameters of target lesions, taking as a reference the baseline sum diameters. Only response assessments before first documented PD or new anti-cancer therapies were considered. PD: at least a 20% increase in sum of diameters of target lesions, taking as reference the smallest sum on study (included baseline sum if smallest on study). In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. Appearance of one or more new lesions was also considered PD. Only those participants who achieved a confirmed response will be included in the analysis. DOR was determined by ICR.
From date of first objective response (CR or PR that is subsequently confirmed) to documented PD, or death from any cause whichever occurred first
Progression Free Survival (PFS) Per RECIST Version 1.1 Determined by ICR: All Participants
Time Frame: From date of first dose to the date of documented disease progression or death from any cause whichever occurred first or censoring date
PFS time was defined as the time from the first date of study treatment to the date of documented disease progression using RECIST v1.1 or death from any cause, whichever occurred first. Participants who were alive and had not progressed at the time of the analysis were censored at the time of their last tumor assessment documenting absence of PD. Participants lacking an evaluation of tumor response after their start of study treatment had their event time censored at 1 day. PD: at least a 20% increase in sum of diameters of target lesions, taking as reference the smallest sum on study (included baseline sum if smallest on study). In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. Appearance of one or more new lesions was also considered PD. PFS was determined by ICR.
From date of first dose to the date of documented disease progression or death from any cause whichever occurred first or censoring date
Progression Free Survival (PFS) Per RECIST Version 1.1 Determined by ICR: Japanese Participants
Time Frame: From date of first dose to the date of documented disease progression or death from any cause whichever occurred first or censoring date
PFS time was defined as the time from the first date of study treatment to the date of documented disease progression using RECIST v1.1 or death from any cause, whichever occurred first. Participants who were alive and had not progressed at the time of the analysis were censored at the time of their last tumor assessment documenting absence of PD. Participants lacking an evaluation of tumor response after their start of study treatment had their event time censored at 1 day. PD: at least a 20% increase in sum of diameters of target lesions, taking as reference the smallest sum on study (included baseline sum if smallest on study). In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. Appearance of one or more new lesions was also considered PD. PFS was determined by ICR.
From date of first dose to the date of documented disease progression or death from any cause whichever occurred first or censoring date
Progression Free Survival (PFS) Per RECIST Version 1.1 Determined by INV: All Participants
Time Frame: From date of first dose to the date of documented disease progression or death from any cause whichever occurred first or censoring date
PFS time was defined as the time from the first date of study treatment to the date of documented disease progression using RECIST v1.1 or death from any cause, whichever occurred first. Participants who were alive and had not progressed at the time of the analysis were censored at the time of their last tumor assessment documenting absence of PD. Participants lacking an evaluation of tumor response after their start of study treatment had their event time censored at 1 day. PD: at least a 20% increase in sum of diameters of target lesions, taking as reference the smallest sum on study (included baseline sum if smallest on study). In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. Appearance of one or more new lesions was also considered PD. PFS was determined by INV.
From date of first dose to the date of documented disease progression or death from any cause whichever occurred first or censoring date
Progression Free Survival (PFS) Per RECIST Version 1.1 Determined by INV: Japanese Participants
Time Frame: From date of first dose to the date of documented disease progression or death from any cause whichever occurred first or censoring date
PFS time was defined as the time from the first date of study treatment to the date of documented disease progression using RECIST v1.1 or death from any cause, whichever occurred first. Participants who were alive and had not progressed at the time of the analysis were censored at the time of their last tumor assessment documenting absence of PD. Participants lacking an evaluation of tumor response after their start of study treatment had their event time censored at 1 day. PD: at least a 20% increase in sum of diameters of target lesions, taking as reference the smallest sum on study (included baseline sum if smallest on study). In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. Appearance of one or more new lesions was also considered PD. PFS was determined by INV.
From date of first dose to the date of documented disease progression or death from any cause whichever occurred first or censoring date
Overall Survival: All Participants
Time Frame: From start of study treatment to date of death from any cause or censoring date
OS was defined as the time from start of study treatment to date of death due to any cause. In the absence of confirmation of death, survival time was censored at the last date the participant was known to be alive. Participants lacking data beyond their start of study treatment had their survival time censored at 1 day.
From start of study treatment to date of death from any cause or censoring date
Overall Survival: Japanese Participants
Time Frame: From start of study treatment to date of death from any cause or censoring date
OS was defined as the time from start of study treatment to date of death due to any cause. In the absence of confirmation of death, survival time was censored at the last date the participant was known to be alive. Participants lacking data beyond their start of study treatment had their survival time censored at 1 day.
From start of study treatment to date of death from any cause or censoring date
Number of Participants With Adverse Events, Serious Adverse Events and Treatment Related Adverse Events and Serious Adverse Events: All Participants
Time Frame: From date of first dose of study treatment to up to 30 days after last dose of study treatment
An adverse event was defined as any untoward medical occurrence in a participant or clinical investigational participant administered a medicinal product and which does not necessarily have a causal relationship with this treatment. Serious adverse event was any untoward medical occurrence at any dose that resulted in death; life-threatening (immediate risk of death); required inpatient hospitalization or prolongation of existing hospitalization; persistent or significant disability/incapacity (substantial disruption of the ability to conduct normal life functions); congenital anomaly/birth defect or that was considered as an important medical event. Treatment related adverse events and serious adverse events was judged by investigator.
From date of first dose of study treatment to up to 30 days after last dose of study treatment
Number of Participants With Adverse Events, Serious Adverse Events and Treatment Related Adverse Events and Serious Adverse Events: Japanese Participants
Time Frame: From date of first dose of study treatment to up to 30 days after last dose of study treatment
An adverse event was defined as any untoward medical occurrence in a participant or clinical investigational participant administered a medicinal product and which does not necessarily have a causal relationship with this treatment. t intervention indicated and Grade 5 indicates death related to AE. Participants who discontinued treatment due to AEs were captured under AEs leading to treatment discontinuation. SAE was any untoward medical occurrence at any dose that resulted in death; life-threatening (immediate risk of death); required inpatient hospitalization or prolongation of existing hospitalization; persistent or significant disability/incapacity (substantial disruption of the ability to conduct normal life functions); congenital anomaly/birth defect or that was considered as an important medical event. Treatment related adverse events and serious adverse events was judged by investigator.
From date of first dose of study treatment to up to 30 days after last dose of study treatment
Number of Participants With Abnormalities in Laboratory Parameters: All Participants
Time Frame: From date of first dose of study treatment to up to 30 days after last dose of study treatment
From date of first dose of study treatment to up to 30 days after last dose of study treatment
Number of Participants With Abnormalities in Laboratory Parameters: Japanese Participants
Time Frame: From date of first dose of study treatment to up to 30 days after last dose of study treatment
From date of first dose of study treatment to up to 30 days after last dose of study treatment
Number of Participants With Dose Modifications and Treatment Discontinuations: All Participants
Time Frame: From date of first dose of study treatment to up to 30 days after last dose of study treatment
From date of first dose of study treatment to up to 30 days after last dose of study treatment
Number of Participants With Dose Modifications and Treatment Discontinuations: Japanese Participants
Time Frame: From date of first dose of study treatment to up to 30 days after last dose of study treatment
From date of first dose of study treatment to up to 30 days after last dose of study treatment
Number of Participants With Clinically Significant Changes in Vital Signs: All Participants
Time Frame: From date of first dose of study treatment to up to 30 days after last dose of study treatment
From date of first dose of study treatment to up to 30 days after last dose of study treatment
Number of Participants With Clinically Significant Changes in Vital Signs: Japanese Participants
Time Frame: From date of first dose of study treatment to up to 30 days after last dose of study treatment
From date of first dose of study treatment to up to 30 days after last dose of study treatment

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Investigators

  • Study Director: Pfizer CT.gov Call Center, Pfizer

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

April 8, 2021

Primary Completion (Actual)

July 17, 2023

Study Completion (Estimated)

June 30, 2026

Study Registration Dates

First Submitted

January 20, 2021

First Submitted That Met QC Criteria

January 20, 2021

First Posted (Actual)

January 25, 2021

Study Record Updates

Last Update Posted (Actual)

January 9, 2026

Last Update Submitted That Met QC Criteria

December 16, 2025

Last Verified

May 1, 2025

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

http://engagezone.msd.com/doc/ProcedureAccessClinicalTrialData.pdf

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

Yes

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Clinical Trials on Breast Cancer

Clinical Trials on Tucatinib

Subscribe