DiviTum®TKa: A Biomarker Assay for Efficacy in HR+ Metastatic Breast Cancer Patients

NCT ID: NCT06388122

Last Updated: 2025-09-09

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Total Enrollment

100 participants

Study Classification

OBSERVATIONAL

Study Start Date

2024-04-30

Study Completion Date

2031-06-15

Brief Summary

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The purpose of this study is to explore the clinical utility of routinely measuring thymidine kinase activity (TKa) in HR+ metastatic breast cancer patients receiving treatment with any approved endocrine therapy either alone or in combination with any approved CDK4/6 inhibitor.

Detailed Description

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Conditions

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HER2-negative Breast Cancer Hormone-receptor-positive Breast Cancer Metastatic Breast Cancer

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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Group 1 (initiating 1st line CDK4/6 & endocrine therapy)

Blood will be drawn every 14 days starting from the first treatment cycle until the start of cycle 3; starting at cycle 3 blood will be drawn the first day of every cycle thereafter until progression. Optional blood draws will be taken with standard of care labs when starting next therapy.

Biospecimen Collection

Intervention Type PROCEDURE

Undergo blood sample collection

Group 2 (initiating 2nd or later line of CDK4/6 with or without endocrine therapy)

Blood will be drawn every 14 days starting from the first treatment cycle until the start of cycle 3; starting at cycle 3 blood will be drawn the first day of every cycle thereafter until progression. Optional blood draws will be taken with standard of care labs when starting next therapy.

Biospecimen Collection

Intervention Type PROCEDURE

Undergo blood sample collection

Group 3 (currently receiving 1st line CDK4/6 and endocrine therapy)

Blood will be drawn on day 15 of the next cycle after enrollment and the first day of every cycle thereafter until progression. Optional blood draws will be taken with standard of care labs when starting next therapy.

Biospecimen Collection

Intervention Type PROCEDURE

Undergo blood sample collection

Group 4 (initiating or currently receiving 1st or 2nd line endocrine therapy)

Blood will be drawn at baseline or the first day of the treatment cycle and the first day of every cycle thereafter until progression. Optional blood draws will be taken with standard of care labs when starting next therapy.

Biospecimen Collection

Intervention Type PROCEDURE

Undergo blood sample collection

Interventions

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Biospecimen Collection

Undergo blood sample collection

Intervention Type PROCEDURE

Other Intervention Names

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Biological Sample Collection Biospecimen Collected Specimen Collection

Eligibility Criteria

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Inclusion Criteria

* Pre- or post-menopausal HR+ metastatic breast cancer patients who are:

* Group 1: scheduled to initiate 1st line combination therapy with an FDA-approved CDK4/6 inhibitor (palbociclib, ribociclib, or abemaciclib) and an FDA-approved endocrine therapy for pre- or post-menopausal HR+ metastatic breast cancer (mBC).
* Group 2: scheduled to initiate second or later lines of therapy with an FDA-approved CDK4/6 inhibitor (palbociclib, ribociclib, or abemaciclib) with or without an FDA-approved endocrine therapy for pre- or post-menopausal HR+ mBC.
* Group 3: currently receiving 1st line therapy with an FDA-approved CDK4/6 inhibitor (palbociclib, ribociclib, or abemaciclib) and an FDA-approved endocrine therapy for pre- or post-menopausal HR+ mBC.
* Group 4: scheduled to initiate, or are currently receiving, 1st or 2nd line therapy of an FDA approved endocrine therapy (single agent) for pre- or post-menopausal HR+ mBC.

NOTE: Patients that meet eligibility criteria for any of the above groups that are already enrolled in an ongoing clinical trial are eligible for co-enrollment to this observational study.

Exclusion Criteria

* Treatment including investigational agent or therapies
* Early breast cancer diagnosis
* Male breast cancer
* Currently receiving treatment for other active malignancy at time of registration

* EXCEPTIONS: Nonmelanoma skin cancer or carcinoma-in-situ (e.g. of cervix, prostate)
* Inability to give written informed consent
Minimum Eligible Age

18 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

No

Sponsors

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Mayo Clinic

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Pooja Advani, MBBS, MD

Role: PRINCIPAL_INVESTIGATOR

Mayo Clinic

Locations

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Mayo Clinic in Florida

Jacksonville, Florida, United States

Site Status RECRUITING

Countries

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United States

Central Contacts

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Clinical Trials Referral Office

Role: CONTACT

855-776-0015

Facility Contacts

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Clinical Trials

Role: primary

855-776-0015

Related Links

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Other Identifiers

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NCI-2024-03405

Identifier Type: REGISTRY

Identifier Source: secondary_id

MC240301

Identifier Type: OTHER

Identifier Source: secondary_id

23-009689

Identifier Type: -

Identifier Source: org_study_id

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