ClinicalTrials.gg
CompletedNCT07760714Updated Aug 14, 2026

A Real-World Study of Treatment Patterns, Tolerability and Effectiveness of CDK4/6 Inhibition in HR+, HER2-negative Metastatic Breast Cancer Patients

An observational study in Breast Cancer, sponsored by Novartis Pharmaceuticals. Completed at 1 site in United States. Open to participants aged 18 Years to 120 Years. Per ClinicalTrials.gov, last updated 2026-08-14.

Sponsored by Novartis Pharmaceuticals (part of Novartis) · Observational

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Study type
Observational
Model
Cohort
Time perspective
Retrospective
Enrollment
945
Ages
18 Years to 120 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-14

Among 199 studies in Breast Neoplasms by Novartis — 16 open to participants now, 30 under way, 4 of them phase 3. Breast Neoplasms · Novartis.

Enrollment
16th of 38
945 · median 538
Started
2025
with 7 others
Observational
38 of 199
7 open now
Registered
198th of 199
by date

Among the 199 studies in Breast Neoplasms by Novartis, this one is the 16th largest by enrollment of the 38 observational ones that give a count, is one of 8 that started in 2025, is one of 38 observational ones, and was the 198th registered.

Breast Neoplasms

14,832 studies on the registry are indexed under Breast Neoplasms; 3,320 are open to participants now.

Browse Breast Neoplasms studies →

Open to participants now

16 of the 199 studies in Breast Neoplasms by Novartis are open now, in 12 countries. Recruiting first, the newest first:

11 more — sign in →

By country, each count listing its studies:

All 16 open studies →

Who these studies take

Of the 2,399 Breast Neoplasms studies recruiting now, 1,570 (65%) set no upper age limit and 592 (25%) stop at 75 or younger; 103 take children under 18; 215 take healthy volunteers.

This study: 18 Years to 120 Years · all sexes · no healthy volunteers.

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02

Study summary

The aim of this study was to assess real-world treatment patterns and tolerability of ribociclib among patient populations historically underrepresented in clinical trials - specifically older adults and Black/African American patients with hormone receptor-positive/human epidermal growth factor receptor 2-negative (HR+/HER2-) metastatic breast cancer (mBC).

The study was conducted using data from a nationwide database derived from electronic health record (EHR) data collected from oncology practices across the United States. The study population was drawn from community and academic oncology practices within the health research network.

03

Conditions studied

  • Breast Cancer

Browse trials for

Keywords

  • Ribociclib
  • CDK4/6 inhibitor
  • Metastatic breast cancer
  • HR+/HER2-
  • Real-world evidence
  • Treatment patterns
  • Dose modification
  • Tolerability
  • Older adults
  • African American
04

Who can participate

Ages eligible
18 Years to 120 Years
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

HR+/HER2- recurrent or mBC cancer patients aged 65 years or older, and who self-identify as African American, and initiated 1L ribociclib plus ET on or after January 01, 2018.

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Included in Flatiron's mBC Enhanced Data Model (EDM):

    1. Had an International Classification of Diseases (ICD) diagnosis of breast cancer (ICD, 9th revision, clinical modification [ICD-9-CM] 174.x or 175.x or ICD, 10th revision, clinical modification [ICD-10-CM] C50x)
    2. At least two documented clinical visits, on different days, occurring on or after January 1, 2011
    3. Included in probabilistic sample of patients queued for review via abstraction
    4. Had pathology consistent with breast cancer
    5. Had evidence of stage IV or recurrent mBC with a diagnosis date on or after January 1, 2011, including patients diagnosed as stage IV at initial diagnosis, or diagnosed with earlier stage disease who then developed metastatic disease
  2. Initiated treatment with (1L) ribociclib (in combination with endocrine therapy [ET]) in the metastatic setting on or after January 1, 2018, and at least 6 months prior to the study data cutoff date (October 31, 2024) to ensure adequate time to observe dose modifications and treatment discontinuations
  3. Had evidence of HR+/- test result prior to or up to 30 days after initiation of 1L ribociclib
  4. Had 1L ribociclib on or before April 30, 2024, to allow for at least 6 months of potential follow-up time prior to the data cutoff date of October 31, 2024

Exclusion criteria

Exclusion Criteria:

  1. Use of any CDK4/6 inhibitor therapy in combination with tamoxifen
  2. Use of any CDK4/6 inhibitor in the pre- setting
Terms in these criteria, in plain language(3)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Metastases

Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.

Line of therapy

A line of therapy is one course of treatment, which may combine several drugs. First-line is the first course given; second-line follows when that stops working or is not tolerated.

“Two prior lines” means two courses that count separately under the study’s rules — not simply two drugs. Ask the study team if you are unsure how yours are counted.

HER2

HER2 is a protein, made from the ERBB2 gene, that drives the growth of some cancers. A study may look for a level of the protein, extra copies of the gene, or a particular change in it.

In breast cancer, protein tests are read as HER2-positive, HER2-low or HER2-negative; other cancers use their own rules. Check which test result the study requires.

05

Study design

Observational model
Cohort
Time perspective
Retrospective
Enrollment
945 participants (actual)
Patient registry
No

Groups and cohorts

  • Adults Aged 65 and Older

    HR+/HER2- mBC cancer patients aged 65 years or older who initiated 1L ribociclib plus ET on or after January 01, 2018.

  • Adults Aged 75 and Older

    HR+/HER2- mBC cancer patients aged 75 years or older who initiated 1L ribociclib plus ET on or after January 01, 2018.

  • Black or African American Adults

    HR+/HER2- mBC cancer patients aged 65 years or older who self-identify as Black/African American and initiated 1L ribociclib plus ET on or after January 01, 2018.

This study also gives Ribociclib. No intervention listed here names it: that was found by reading the record.

06

What researchers measure

Primary outcomes

  1. Number of Patients Who Initiated 1L Ribociclib Treatment for HR+/HER2- mBC, by Demographic and Clinical Characteristics Among Patients Aged 65 Years and Older, and Patients Aged 75 Years and Older

    Demographics and clinical characteristics included race/ethnicity, practice type, geographic region, insurance type, socioeconomic status (SES) quintile, stage at initial diagnosis, menopausal status at 1L start, sites of metastasis, endocrine sensitivity status, year of 1L initiation, and prior chemotherapy exposure.

    Time frame: Baseline

  2. Age at 1L Ribociclib Initiation Among Patients Aged 65 Years and Older, and Patients Aged 75 Years and Older

    Time frame: Baseline

  3. Body Mass Index (BMI) at 1L Ribociclib Initiation Among Patients Aged 65 Years and Older, and Patients Aged 75 Years and Older

    Time frame: Baseline

  4. Number of Patients by Eastern Cooperative Oncology Group (ECOG) Performance Status Among Patients Aged 65 Years and Older, and Patients Aged 75 Years and Older,

    ECOG performance status is a scale used to measure a patient's level of functioning in terms of self-care, daily activity, and physical ability. Scores range from 0 (fully active, able to carry out all pre-disease performance without restriction) to 5 (deceased).

    Time frame: Baseline

  5. Duration Between Metastatic Diagnosis and 1L Ribociclib Initiation Among Patients Aged 65 Years and Older, and Patients Aged 75 Years and Older

    Time frame: Baseline

  6. Number of Patients by Initial and Subsequent Dosing Among Patients Aged 65 Years and Older, and Patients Aged 75 Years and Older

    Time frame: Up to approximately 6 years, 10 months

  7. Number of Patients With Dose Modifications Among Patients Aged 65 Years and Older, and Patients Aged 75 Years and Older

    Dose modifications defined as a dose being held, increased, or decreased.

    Time frame: Up to approximately 6 years, 10 months

  8. Number of Patients by Reasons for Dose Modifications Among Patients Aged 65 Years and Older, and Patients Aged 75 Years and Older

    Dose modifications defined as a dose being held, increased, or decreased.

    Time frame: Up to approximately 6 years, 10 months

  9. Number of Patients Who Discontinued Treatment Among Patients Aged 65 Years and Older, and Patients Aged 75 Years and Older

    Time frame: Up to approximately 6 years, 10 months

  10. Number of Patients by Reason for Treatment Discontinuation Among Patients Aged 65 Years and Older, and Patients Aged 75 Years and Older

    Time frame: Up to approximately 6 years, 10 months

Secondary outcomes

  1. Number of Patients Who Initiated 1L Ribociclib Treatment for HR+/HER2- mBC, by Demographic and Clinical Characteristics Among Black/African American Patients

    Demographics and clinical characteristics included race/ethnicity, practice type, geographic region, insurance type, socioeconomic status (SES) quintile, stage at initial diagnosis, menopausal status at 1L start, sites of metastasis, endocrine sensitivity status, year of 1L initiation, and prior chemotherapy exposure.

    Time frame: Baseline

  2. Age at 1L Ribociclib Initiation Among Black/African American Patients

    Time frame: Baseline

  3. BMI at 1L Ribociclib Initiation Among Black/African American Patients

    Time frame: Baseline

  4. Number of Patients by ECOG Performance Status Among Black/African American Patients

    ECOG performance status is a scale used to measure a patient's level of functioning in terms of self-care, daily activity, and physical ability. Scores range from 0 (fully active, able to carry out all pre-disease performance without restriction) to 5 (deceased).

    Time frame: Baseline

  5. Duration Between Metastatic Diagnosis and 1L Ribociclib Initiation Among Black/African American Patients

    Time frame: Baseline

  6. Number of Patients by Initial and Subsequent Dosing Among Black/African American Patients

    Time frame: Up to approximately 6 years, 10 months

  7. Number of Patients With Dose Modifications Among Black/African American Patients

    Dose modifications defined as a dose being held, increased, or decreased.

    Time frame: Up to approximately 6 years, 10 months

  8. Number of Patients by Reasons for Dose Modifications Among Black/African American Patients

    Dose modifications defined as a dose being held, increased, or decreased.

    Time frame: Up to approximately 6 years, 10 months

  9. Number of Patients Who Discontinued Treatment Among Black/African American Patients

    Time frame: Up to approximately 6 years, 10 months

  10. Number of Patients by Reason for Treatment Discontinuation Among Black/African American Patients

    Time frame: Up to approximately 6 years, 10 months

07

Study locations

1 site
  • Novartis
    East Hanover, New Jersey 07936, United States
08

References and documents

Individual participant data

Plan to share: No

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Feb 2025 to primary completion in Aug 2025, 6 months.

How these figures are worked out, and which studies are left out of them.

Registered
Aug 7, 2026
First posted
Aug 12, 2026
StartActual
Feb 26, 2025
Primary completionActual
Aug 29, 2025
CompletionActual
Aug 29, 2025
Last update
Aug 14, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Aug 14, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07760714
Responsible party
Sponsor
First posted
Aug 12, 2026
Start date
Feb 26, 2025
Primary completion
Aug 29, 2025
Completion
Aug 29, 2025
Last update
Aug 14, 2026

Study contacts

Novartis Pharmaceuticals
study director · Novartis Pharmaceuticals
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Aug 2026. You cannot join it, but the record below documents what was studied.

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