AzTrials
AzTrials

Breast CancerPhase 1NCT03916744

A Study of Giredestrant (GDC-9545) in Postmenopausal Women With Stage I-III Operable, Estrogen Receptor-Positive Breast Cancer

A Phase 1 study testing Giredestrant and Surgery in people with Breast Cancer, run by Genentech, Inc. at 15 sites in 5 countries.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
Search all trials

Trial summary

This study will evaluate the pharmacodynamics, pharmacokinetics, safety, and biologic activity of giredestrant in participants with Stage I-III operable estrogen receptor (ER)-positive, human epidermal growth factor receptor 2 (HER2)-negative, untreated breast cancer. Read more about this study

Who is it for?
Ages 18 years and older, women only
Conditions the study is for
Breast Cancer
What is being tested?
Giredestrant and Surgery
Could I receive a placebo?
No, everyone receives an active treatment
How many people
75 participants
Where
15 sitesin 5 countries
Study dates
26 Jul 2019to 25 May 2021
Phase
Phase 1
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • Women only
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Ability to comply with the study protocol, in the investigator's judgment
  • Histologically confirmed invasive breast carcinoma, with all of the following characteristics: Primary tumor greater than or equal to (≥)1.5 centimeters (cm) in largest diameter by ultrasound; Stage I-III operable breast cancer; Documentation confirming the absence of distant metastasis (M0) as determined by institutional practice.
  • ER-positive tumor and HER2-negative breast cancer as per local laboratory testing
  • Postmenopausal status
  • Breast cancer eligible for primary surgery
  • Submission of a representative tumor tissue specimen
  • Eastern Cooperative Oncology Group (ECOG) Performance Status less than or equal to (≤)1
  • Adequate organ function

Who cannot join

  • Diagnosis of inflammatory breast cancer
  • Diagnosis of bilateral breast cancer
  • Concurrent use of hormone replacement therapies
  • Previous systemic or local treatment for the primary breast cancer currently under investigation
  • Concurrent treatment with other experimental drugs or participation in another clinical trial with any investigational drug within 30 days prior to study entry
  • Current treatment with any systemic anti-cancer therapies
Show all 24Show fewer
  • Major surgery within 4 weeks prior to enrollment
  • Radiation therapy within 2 weeks prior to enrollment
  • Diagnosis of any secondary malignancy within 3 years prior to enrollment, except for appropriately treated carcinoma in situ of the cervix, non-melanoma skin carcinoma, or Stage I uterine cancer
  • Active inflammatory bowel disease or chronic diarrhea, short bowel syndrome, or upper gastrointestinal surgery including gastric resection
  • Known HIV infection
  • Known clinically significant history of liver disease consistent with Child-Pugh Class B or C, including active viral or other hepatitis, current alcohol abuse, or cirrhosis
  • Other severe acute or chronic medical or psychiatric condition or laboratory abnormality that may increase the risk associated with study participation or investigational product administration or may interfere with the interpretation of study results and, in the judgment of the investigator, would make the patient inappropriate for entry into this study
  • History of allergy to giredestrant or any of its excipients
  • Any condition requiring anti-coagulants, such as warfarin, heparin, or thrombolytic drugs
  • History of documented hemorrhagic diathesis or coagulopathy
  • History or presence of symptomatic bradycardia or sick sinus syndrome
  • Baseline heart rate ≤55 beats per minute (bpm) prior to enrollment
  • History or presence of an abnormal electrocardiogram (ECG) that is clinically significant in the investigator's opinion, including complete left bundle branch block, second- or third-degree heart block, or evidence of prior myocardial infarction
  • QT interval corrected through use of Fridericia's formula (QTcF) >470 milliseconds demonstrated by at least two ECGs >30 minutes apart
  • History of ventricular dysrhythmias or risk factors for ventricular dysrhythmias such as structural heart disease, coronary heart disease, clinically significant electrolyte abnormalities, or family history of sudden unexplained death or long QT syndrome
  • Current treatment with medications that are well known to prolong the QT interval
  • History or presence of uncontrolled hypothyroidism
  • Any other disease, metabolic dysfunction, physical examination finding, or clinical laboratory finding that, in the investigator's opinion, gives reasonable suspicion of a disease or condition that contraindicates the use of an investigational drug or that may affect the interpretation of the results or render the patient at high risk from treatment complications

Trial locations and contacts

15 sites in 5 countries.

15 sites in 5 countries

Spain5 sites
  • Hospital Universitari Vall d'Hebron

    Barcelona, 08035

  • Onkologikoa - Instituto Oncológico de Donostia

    Donostia / San Sebastian, Guipuzcoa, 20014

  • Hospital Ruber Internacional;Servicio de Oncologia

    Madrid, 28034

  • HM Sanchinarro ? CIOCC

    Madrid, 28050

  • Hospital Clinico Universitario de Valencia

    Valencia, 46010

Other trials in Spain

United States3 sites
  • University of Colorado

    Aurora, Colorado, 80045-2517

  • Massachusetts General Hospital

    Boston, Massachusetts, 02114

  • Memorial Sloan Kettering Cancer Center

    New York, New York, 10065

Other trials in United States

Belgium3 sites
  • Clinique Edith Cavell; Pharmacie

    Auderghem, 1160

  • UZ Antwerpen

    Edegem, 2650

  • Clinique Sainte-Elisabeth; Oncologie

    Namur, 5000

Other trials in Belgium

Australia2 sites
  • St Vincent's Hospital Sydney

    Darlinghurst, New South Wales, 2010

  • Sunshine Hospital

    St Albans, Victoria, 3021

Other trials in Australia

United Kingdom2 sites
  • Barts Health NHS Trust; William Harvey Heart Centre, QMUL School of Medicine & Dentistry

    London, EC1M 6BQ

  • Royal Cornwall Hospital

    Truro, TR1 3LQ

Other trials in United Kingdom

About this study

Official title: A Phase I, Multicenter, Open-Label Preoperative, Short-Term Window Study of GDC-9545 in Postmenopausal Women With Stage I-III Operable, Estrogen Receptor-Positive Breast Cancer

This study will evaluate the pharmacodynamics, pharmacokinetics, safety, and biologic activity of giredestrant in participants with Stage I-III operable estrogen receptor (ER)-positive, human epidermal growth factor receptor 2 (HER2)-negative, untreated breast cancer.

Conditions
Breast Cancer
Being tested
Giredestrant, Surgery
Medical subject headings
Breast Neoplasms

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • GiredestrantDrug

    Also called GDC-9545, RO7197597, RG6171

    Giredestrant will be administered orally once daily (QD) starting on Day 1 up to and including the day of surgery (if allowed per local process) on Day 15 (+/-2 days).

  • SurgeryProcedure or surgery

    Breast cancer surgery will take place on Day 15 (+/-2 days).

Study groups in NCT03916744
Study groupRoleWhat they receive
Giredestrant 10 mgExperimentalNot described
Receives: Drug: Giredestrant; Procedure: Surgery
Giredestrant 30 mgExperimentalNot described
Receives: Drug: Giredestrant; Procedure: Surgery
Giredestrant 100 mgExperimentalNot described
Receives: Drug: Giredestrant; Procedure: Surgery

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Change From Baseline in Tumor Cell Proliferation, as Measured by the Proportion of Nuclei Staining Ki67-Positive at Surgery Relative to Baseline in Pre- and Post-Treatment Tumor Biopsy Samples

    The biological response to the study treatment was assessed by measuring changes in cell proliferation (Ki67 expression) using formalin-fixed paraffin-embedded histopathology sections of the tumor biopsy specimens taken at baseline and at day of surgery. Baseline was defined as a sample taken prior to initiation of study drug. The results show the proportion of nuclei staining Ki67-positive (Ki67+) in the tumor biopsy sample taken post-treatment (at surgery) relative to that in the pre-treatment sample (at baseline).

    Measured: Baseline and Surgery (Day 15)

  2. Change From Baseline in Tumor Cell Proliferation, as Measured by the Difference in the Percentage of Nuclei Staining Ki67-Positive at Surgery Compared With Baseline in Pre- and Post-Treatment Tumor Biopsy Samples

    The biological response to the study treatment was assessed by measuring changes in cell proliferation (Ki67 expression) using formalin-fixed paraffin-embedded histopathology sections of the tumor biopsy specimens taken at baseline and at day of surgery. Baseline was defined as a sample taken prior to initiation of study drug. The results show the percentage of nuclei staining Ki67-positive (Ki67+) in the pre- and post-treatment tumor biopsy samples (taken at baseline and surgery, respectively) and the absolute difference in the percentage of Ki67+ nuclei between the two samples (calculated as surgery minus baseline).

    Measured: Baseline and Surgery (Day 15)

Secondary outcomes (10)
  1. Number of Participants With at Least One Adverse Event and by Severity, Determined According to National Cancer Institute Common Terminology Criteria for Adverse Events, Version 5.0 (NCI-CTCAE v5.0)

    All adverse events (AEs) were recorded and the investigator independently assessed the seriousness and severity of each AE. AE severity was graded on a scale from 1 to 5 using the NCI-CTCAE v5.0; any events not specifically listed in the scale were defined as: Grade 1 is mild; Grade 2 is moderate; Grade 3 is severe or medically significant; Grade 4 is life-threatening; and Grade 5 is death related to an AE. Investigators used their knowledge of the patient, the circumstances surrounding the event, and an evaluation of any potential alternative causes to determine whether an AE was considered to be related to the study drug.

    Measured: From Baseline to Day 43

  2. Percentage of Participants With Abnormal Vital Signs During Treatment

    Vital signs, which included diastolic and systolic blood pressure, pulse rate, and body temperature, were measured while the participant was sitting and according to institutional practices. Any of the vital signs that were outside of the normal reference range (in the specified direction - low or high) were considered abnormalities. Not every abnormality qualified as an adverse event (AE). A vital sign result had to be reported as an AE if it met any of the following criteria: was accompanied by clinical symptoms; resulted in a change in study treatment; resulted in a medical intervention or a change in concomitant therapy; or was clinically significant in the investigator's judgment.

    Measured: Baseline, Days 1, 8, and 15

  3. Change From Baseline in Pulse Rate

    Pulse rate was measured while the participant was in a seated position. The baseline value at visit and the change from baseline value at each timepoint are reported. The change from baseline value was calculated by subtracting the post-baseline value from the baseline value. The post-baseline minimum and maximum change from baseline values are, respectively, the smallest and largest value changes obtained after baseline through the last study visit. Baseline was defined as the participant's last value prior to initiation of study drug.

    Measured: Baseline, Day 8, Surgery (Day 15), and Post-Surgery (Day 43)

  4. Change From Baseline in Systolic Blood Pressure

    Systolic blood pressure was measured while the participant was in a seated position. The baseline value at visit and the change from baseline value at each timepoint are reported. The change from baseline value was calculated by subtracting the post-baseline value from the baseline value. The post-baseline minimum and maximum change from baseline values are, respectively, the smallest and largest value changes obtained after baseline through the last study visit. Baseline was defined as the participant's last value prior to initiation of study drug.

    Measured: Baseline, Day 8, Surgery (Day 15), and Post-Surgery (Day 43)

  5. Change From Baseline in Diastolic Blood Pressure

    Diastolic blood pressure was measured while the participant was in a seated position. The baseline value at visit and the change from baseline value at each timepoint are reported. The change from baseline value was calculated by subtracting the post-baseline value from the baseline value. The post-baseline minimum and maximum change from baseline values are, respectively, the smallest and largest value changes obtained after baseline through the last study visit. Baseline was defined as the participant's last value prior to initiation of study drug.

    Measured: Baseline, Day 8, Surgery (Day 15), and Post-Surgery (Day 43)

  6. Change From Baseline in Body Temperature

    Body temperature was measured according to institutional practice. The baseline value at visit and the change from baseline value at each timepoint are reported. The change from baseline value was calculated by subtracting the post-baseline value from the baseline value. The post-baseline minimum and maximum change from baseline values are, respectively, the smallest and largest value changes obtained after baseline through the last study visit. Baseline was defined as the participant's last value prior to initiation of study drug.

    Measured: Baseline, Day 8, Surgery (Day 15), and Post-Surgery (Day 43)

  7. Percentage of Participants With Laboratory Abnormalities in Hematology Tests During Treatment, Among Participants Without the Abnormality at Baseline

    Laboratory parameters for hematology will be measured and compared with a standard reference range. Any of the laboratory test results that were outside of a parameter's normal reference range (in the specified direction - low or high) were considered abnormalities. Not every laboratory abnormality qualified as an adverse event (AE). A laboratory test result was reported as an AE if it met any of the following criteria: was accompanied by clinical symptoms; resulted in a change in study treatment; resulted in a medical intervention or a change in concomitant therapy; or was clinically significant in the investigator's judgment.

    Measured: Baseline, Days 1, 8, and 15

  8. Percentage of Participants With Laboratory Abnormalities in Blood Chemistry and Coagulation Tests During Treatment, Among Participants Without the Abnormality at Baseline

    Laboratory parameters for blood chemistry and coagulation were measured and compared with a standard reference range. Any of the laboratory test results that were outside of a parameter's normal reference range (in the specified direction - low or high) were considered abnormalities. Not every laboratory abnormality qualified as an adverse event (AE). A laboratory test result was reported as an AE if it met any of the following criteria: was accompanied by clinical symptoms; resulted in a change in study treatment; resulted in a medical intervention or a change in concomitant therapy; or was clinically significant in the investigator's judgment. SGPT/ALT = alanine aminotransferase; SGOT/AST = aspartate aminotransferase

    Measured: Baseline, Days 1, 8, and 15

  9. Percentage of Participants With Abnormal Electrocardiogram Parameters During Treatment

    Electrocardiogram (ECG) recordings were performed after the participant had been resting in a supine position for at least 10 minutes. ECG parameters included heart rate, PR and QRS durations, and QT and QTcF intervals. Per the protocol, ECG readings post-treatment were limited to those for whom it was clinically indicated. Any of the ECG parameters that were outside of the normal reference range (in the specified direction - low or high) were considered abnormalities. Not every abnormality qualified as an adverse event (AE). An ECG test result was reported as an AE if it met any of the following criteria: was accompanied by clinical symptoms; resulted in a change in study treatment; resulted in a medical intervention or a change in concomitant therapy; or was clinically significant in the investigator's judgment.

    Measured: Baseline, Days 1, 8, and 15

  10. Plasma Concentration of Giredestrant at Steady State by Dose Level

    Plasma samples were obtained on the day of surgery (Day 15), or prior to biopsy on Day 14.

    Measured: Predose on day of surgery (Day 15), or prior to biopsy (Day 14)

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted16 Apr 2019
  2. Study start26 Jul 2019
  3. Primary completion25 May 2021
  4. Study completion25 May 2021

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Basic science
Allocation
Non-randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
75 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03916744
Sponsor's protocol ID
GO40987
Other IDs
2018-003798-85, 2018
Status last verified
Mar 2023
First submitted
10 Apr 2019
Last updated
10 Mar 2023
Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No: Qualified researchers may request access to individual patient level data through the request platform (www.vivli.org). Further details on Roche's criteria for eligible studies are available here (https://vivli.org/ourmember/roche/). For further details on Roche's Global Policy on Sharing of Clinical Study Information and how to request access to related clinical study documents, see here (https://www.roche.com/research\_and\_development/who\_we\_are\_how\_we\_work/clinical\_trials/our\_commitment\_to\_data\_sharing.htm).

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing Giredestrant and Surgery in people with Breast Cancer, run by Genentech, Inc. at 15 sites in 5 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 8 inclusion and 24 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 10 Mar 2023. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 15 sites in Spain, United States, Belgium, Australia, United Kingdom. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 10 Mar 2023). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Change From Baseline in Tumor Cell Proliferation, as Measured by the Proportion of Nuclei Staining Ki67-Positive at Surgery Relative to Baseline in Pre- and Post-Treatment Tumor Biopsy Samples (time frame: Baseline and Surgery (Day 15)). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 10 Mar 2023.

Free account

Log in to keep searching

You’ve used your 3 free searches. AzTrials is free: log in or create a free account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in