Sacituzumab Govitecan + Pembrolizumab for Breast Cancer

(NeoSTAR Trial)

Recruiting at 4 trial locations

Overseen By Laura Spring, MD

Age: 18+

Sex: Any

Trial Phase: Phase 2

Sponsor: Massachusetts General Hospital

Must not be taking: Antiretrovirals

Disqualifiers: Inflammatory breast cancer, Heart disease, HIV, others

No Placebo Group All trial participants will receive the active study treatment (no placebo)

Prior Safety Data This treatment has passed at least one previous human trial

Breakthrough Therapy This drug has been fast-tracked for approval by the FDA given its high promise

Compensation: Varies

Number of Visits: 11

Duration: 12 weeks

260 Participants Needed

Trial Summary

Will I have to stop taking my current medications?

The trial information does not specify whether you need to stop taking your current medications. It's best to discuss this with the study team or your doctor.

What data supports the effectiveness of the drug Sacituzumab Govitecan for breast cancer?

Sacituzumab Govitecan has shown to prolong the time patients with advanced triple-negative breast cancer live without the disease getting worse, and it is generally well tolerated with manageable side effects. It received accelerated approval in the USA for treating metastatic triple-negative breast cancer after other treatments have been tried. ^{1 2 3 4 5}

Is the combination of Sacituzumab Govitecan and Pembrolizumab generally safe for humans?

Pembrolizumab, also known as Keytruda, has been studied in various cancers and has shown manageable safety with very little toxicity in large studies. In nonhuman primate studies, pembrolizumab showed no significant toxic effects, supporting its safety profile. Sacituzumab Govitecan, marketed as Trodelvy, is not specifically mentioned in the provided research, but pembrolizumab's safety data is relevant for understanding the combination's potential safety. ^{6 7 8 9 10}

What makes the drug Sacituzumab Govitecan + Pembrolizumab unique for breast cancer treatment?

This drug combination is unique because it combines Sacituzumab Govitecan, an antibody-drug conjugate that targets cancer cells with a chemotherapy agent, with Pembrolizumab, an immunotherapy that helps the immune system attack cancer. This dual approach aims to enhance treatment effectiveness for patients with metastatic triple-negative breast cancer who have limited options after other therapies. ^{1 2 3 11 12}

What is the purpose of this trial?

This research study is studying to evaluate sacituzumab govitecan for individuals with localized triple negative breast cancer (TNBC) The names of the study drugs involved in this study is: * Sacituzumab govitecan (SG) * Pembrolizumab (combination therapy with SG)

Research Team

Laura M Spring, M.D.

Principal Investigator

Massachusetts General Hospital

Eligibility Criteria

This trial is for adults with a specific breast cancer type called triple negative (no ER, PR, HER2 receptors), who haven't been treated yet. They must have a tumor of at least 1 cm without spread to distant parts of the body and be in good health overall. Pregnant or breastfeeding individuals, those with other cancers within 3 years, uncontrolled illnesses, HIV on antiretrovirals or certain heart conditions can't join.

Inclusion Criteria

My cancer has spread to nearby lymph nodes but not beyond.

My breast cancer is not driven by estrogen, progesterone, or HER2.

My blood tests show my organs and bone marrow are working well.

Exclusion Criteria

I do not have uncontrolled heart disease or abnormal heart rhythms.

I do not have any severe illnesses or social situations that would stop me from following the study's requirements.

I am not on systemic therapy for another cancer nor have I been in the last 3 years.

Timeline

Screening

Participants are screened for eligibility to participate in the trial

2-4 weeks

1 visit (in-person)

Treatment

Participants receive Sacituzumab govitecan for up to 12 weeks, with evaluations and follow-up visits

12 weeks

8 visits (in-person)

Follow-up

Participants are monitored for safety and effectiveness after treatment

12 weeks

2 visits (in-person)

Long-term follow-up

Participants are monitored for disease-free survival and overall survival

up to 36 months

Treatment Details

Interventions

• Pembrolizumab
• Sacituzumab Govitecan

Trial Overview The study is testing Sacituzumab Govitecan alone and in combination with Pembrolizumab for treating localized triple negative breast cancer. It aims to see how well these drugs work before any standard treatments like surgery or radiation are given.

Participant Groups

Group I: Sacituzumab Govitecan and Pembrolizumab (combination cohort) Experimental Treatment 2 Interventions

- The research study procedures include screening for eligibility and study treatment including evaluations and follow up visits. * Sacituzumab govitecan via iv, predetermined dosage per protocol, IV, 2 days per each 21-day cycle, for 4 cycles. * Pembrolizumab via iv, predetermined dosage per protocol, IV, 1 day per each 21-day cycle, for 4 cycles. * This can be followed by standard chemotherapy at the discretion of treating physician.

Group II: Sacituzumab Govitecan (monotherapy cohort) Experimental Treatment 1 Intervention

- The research study procedures include screening for eligibility and study treatment including evaluations and follow up visits. * Sacituzumab govitecan via iv, predetermined dosage per protocol, IV, 2 days per each 21-day cycle, for 4 cycles. * This can be followed by standard chemotherapy at the discretion of treating physician.

Pembrolizumab is already approved in United States, European Union, United Kingdom for the following indications:

Approved in United States as KEYTRUDA for:

• Head and neck squamous cell carcinoma (HNSCC) with PD-L1 CPS ≥1
• Melanoma
• Non-small cell lung cancer (NSCLC)
• Urothelial carcinoma
• Colorectal cancer
• Gastric cancer
• Hepatocellular carcinoma
• Renal cell carcinoma
• Cervical cancer
• Endometrial carcinoma

Approved in European Union as KEYTRUDA for:

• Head and neck squamous cell carcinoma (HNSCC) with PD-L1 CPS ≥1
• Melanoma
• Non-small cell lung cancer (NSCLC)
• Urothelial carcinoma
• Colorectal cancer
• Gastric cancer
• Hepatocellular carcinoma
• Renal cell carcinoma
• Cervical cancer
• Endometrial carcinoma

Approved in United Kingdom as KEYTRUDA for:

• Untreated metastatic or unresectable recurrent head and neck squamous cell carcinoma (HNSCC) with PD-L1 CPS ≥1

Who Is Running the Clinical Trial?

Massachusetts General Hospital

Lead Sponsor

Trials

3,066

Recruited

13,430,000+

Aditya Bardia

Lead Sponsor

Trials

1

Recruited

260+

Gilead Sciences

Industry Sponsor

Trials

1,150

Recruited

878,000+

Daniel O'Day

Gilead Sciences

Chief Executive Officer since 2019

MBA from Columbia University

Dietmar Berger

Gilead Sciences

Chief Medical Officer

MD and PhD from Albert-Ludwigs University School of Medicine

Findings from Research

Sacituzumab govitecan is an antibody-drug conjugate that targets Trop-2 and has shown a 33.3% overall response rate in patients with metastatic triple-negative breast cancer (mTNBC) who have received at least two prior therapies, based on a phase I/II study with 108 participants.

The treatment has a median duration of response of 7.7 months, and while it is generally well-tolerated, common side effects include nausea, neutropenia, and fatigue, indicating a need for monitoring during treatment.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

Sacituzumab Govitecan-hziy: An Antibody-Drug Conjugate for the Treatment of Refractory, Metastatic, Triple-Negative Breast Cancer. Seligson, JM., Patron, AM., Berger, MJ., et al.[2021]

Sacituzumab govitecan is an antibody-drug conjugate that targets Trop-2 and delivers a topoisomerase I inhibitor, showing promise in treating metastatic triple-negative breast cancer (mTNBC) after at least two prior therapies.

In April 2020, it received accelerated approval in the USA for mTNBC, and it is currently undergoing further clinical trials for various cancers, indicating its potential as a versatile treatment option.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

Sacituzumab Govitecan: First Approval. Syed, YY.[2021]

Sacituzumab govitecan (IMMU-132) has been shown to prolong progression-free survival in patients with advanced triple-negative breast cancer, indicating its efficacy as a treatment option.

The treatment is well tolerated, resulting in fewer and more manageable side effects compared to traditional irinotecan, suggesting a safer profile for patients.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

An ADC for Triple-Negative Breast Cancer. [2018]

Sacituzumab govitecan (IMMU-132) demonstrated a predictable pharmacokinetic profile and manageable toxicity in patients with advanced epithelial cancers, with doses of 8 mg/kg (n=81) and 10 mg/kg (n=97) showing safety and efficacy.

The treatment resulted in objective responses in various cancer types, particularly metastatic triple-negative breast cancer, supporting the use of the 10 mg/kg dose for future clinical development.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

Sacituzumab govitecan (IMMU-132), an anti-Trop-2-SN-38 antibody-drug conjugate for the treatment of diverse epithelial cancers: Safety and pharmacokinetics. Ocean, AJ., Starodub, AN., Bardia, A., et al.[2018]

Sacituzumab govitecan, an antibody-drug conjugate targeting Trop-2, showed promising therapeutic activity in a phase I trial with 25 patients suffering from various metastatic solid cancers, achieving partial responses in two patients and stable disease in 16 others.

The maximum tolerated dose was determined to be 12 mg/kg for the first cycle, with lower doses (8 and 10 mg/kg) being safer for extended treatment, leading to acceptable toxicity levels and disease control for up to 36 weeks.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

First-in-Human Trial of a Novel Anti-Trop-2 Antibody-SN-38 Conjugate, Sacituzumab Govitecan, for the Treatment of Diverse Metastatic Solid Tumors. Starodub, AN., Ocean, AJ., Shah, MA., et al.[2022]

Pembrolizumab, a PD-1 inhibitor, has demonstrated clinical effectiveness in treating various solid tumors, particularly in patients with PD-L1-positive non-small-cell lung cancer and unresectable/metastatic melanoma.

Early-phase trials and ongoing studies are focused on further confirming the clinical benefits of pembrolizumab in thoracic malignancies, highlighting its potential as a significant treatment option in cancer therapy.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

Pembrolizumab for the treatment of thoracic malignancies: current landscape and future directions. Karim, S., Leighl, N.[2017]

Pembrolizumab (Keytruda) effectively blocks the PD-1 pathway, enhancing T-cell activity against tumors, which supports its role in promoting tumor regression and immune rejection.

Preclinical studies in cynomolgus monkeys showed that pembrolizumab has a favorable safety profile with no significant toxicological findings, aligning with its demonstrated safety and efficacy in human clinical trials.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

Biophysical and Immunological Characterization and In Vivo Pharmacokinetics and Toxicology in Nonhuman Primates of the Anti-PD-1 Antibody Pembrolizumab. Hutchins, B., Starling, GC., McCoy, MA., et al.[2021]

In the KEYNOTE-355 trial, patients with previously untreated metastatic triple-negative breast cancer (mTNBC) who received pembrolizumab combined with chemotherapy experienced a significant improvement in quality-adjusted survival, gaining an average of 3.7 months more time without symptoms or treatment toxicity compared to those receiving chemotherapy alone.

The benefits of pembrolizumab plus chemotherapy increased over time, with a 20% relative gain in quality-adjusted survival at a maximum follow-up of 52 months, indicating both efficacy and manageable safety in this patient population.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

Q-TWiST analysis of pembrolizumab combined with chemotherapy as first-line treatment of metastatic triple-negative breast cancer that expresses PD-L1. Huang, M., O'Shaughnessy, J., Haiderali, A., et al.[2023]

Pembrolizumab is a monoclonal antibody that effectively blocks the PD-1 receptor on T cells, enhancing their ability to attack cancer cells, particularly in melanoma patients.

In a Phase I study involving 411 patients, pembrolizumab demonstrated high durable response rates with minimal toxicity, indicating its potential as a safe and effective treatment option for melanoma.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

Pembrolizumab joins the anti-PD-1 armamentarium in the treatment of melanoma. Hersey, P., Gowrishankar, K.[2017]

In a phase II trial involving 15 patients with resectable non-small cell lung cancer (NSCLC), neoadjuvant treatment with pembrolizumab showed a major pathologic response in 27% of patients, indicating promising antitumor activity before surgery.

The treatment was found to be feasible and safe, with only 33% of patients experiencing moderate adverse events, and no postoperative mortality, suggesting that pembrolizumab does not compromise surgical outcomes.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

Neoadjuvant anti-programmed death-1 immunotherapy by pembrolizumab in resectable non-small cell lung cancer: First clinical experience. Eichhorn, F., Klotz, LV., Kriegsmann, M., et al.[2022]

Sacituzumab govitecan (SG) demonstrated effectiveness in treating relapsed or refractory metastatic triple-negative breast cancer (RM-TNBC), with a median overall survival of 12.9 months and an objective response rate of 34% based on an analysis of 412 patients across three trials.

The treatment was associated with significant adverse effects, particularly myelosuppression, with 46% of patients experiencing grade ≥3 neutropenia, and there were four treatment-related deaths reported, highlighting the need for careful monitoring during treatment.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

An integrated analysis of Sacituzumab govitecan in relapsed or refractory metastatic triple-negative breast cancer. Cheng, SX., Chen, QC., Lin, GH., et al.[2023]

In a study of 43 patients with metastatic triple-negative breast cancer (mTNBC) treated with sacituzumab govitecan, the median overall survival was 13.1 months, indicating its effectiveness in a real-world setting.

Common adverse events included alopecia, diarrhea, and neutropenia, with 27.9% of patients experiencing Grade 3 neutropenia, highlighting the need for careful management of side effects during treatment.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

Safety and effectiveness of sacituzumab govitecan in patients with metastatic triple-negative breast cancer in real-world settings: first observations from an interdisciplinary breast cancer centre in Germany. Reinisch, M., Bruzas, S., Spoenlein, J., et al.[2023]

References

1. United States pubmed.ncbi.nlm.nih.gov

Sacituzumab Govitecan-hziy: An Antibody-Drug Conjugate for the Treatment of Refractory, Metastatic, Triple-Negative Breast Cancer. [2021]

2. New Zealand pubmed.ncbi.nlm.nih.gov

Sacituzumab Govitecan: First Approval. [2021]

3. United States pubmed.ncbi.nlm.nih.gov

An ADC for Triple-Negative Breast Cancer. [2018]

4. United States pubmed.ncbi.nlm.nih.gov

Sacituzumab govitecan (IMMU-132), an anti-Trop-2-SN-38 antibody-drug conjugate for the treatment of diverse epithelial cancers: Safety and pharmacokinetics. [2018]

5. United States pubmed.ncbi.nlm.nih.gov

First-in-Human Trial of a Novel Anti-Trop-2 Antibody-SN-38 Conjugate, Sacituzumab Govitecan, for the Treatment of Diverse Metastatic Solid Tumors. [2022]

6. England pubmed.ncbi.nlm.nih.gov

Pembrolizumab for the treatment of thoracic malignancies: current landscape and future directions. [2017]

7. United States pubmed.ncbi.nlm.nih.gov

Biophysical and Immunological Characterization and In Vivo Pharmacokinetics and Toxicology in Nonhuman Primates of the Anti-PD-1 Antibody Pembrolizumab. [2021]

8. England pubmed.ncbi.nlm.nih.gov

Q-TWiST analysis of pembrolizumab combined with chemotherapy as first-line treatment of metastatic triple-negative breast cancer that expresses PD-L1. [2023]

9. England pubmed.ncbi.nlm.nih.gov

Pembrolizumab joins the anti-PD-1 armamentarium in the treatment of melanoma. [2017]

10. Ireland pubmed.ncbi.nlm.nih.gov

Neoadjuvant anti-programmed death-1 immunotherapy by pembrolizumab in resectable non-small cell lung cancer: First clinical experience. [2022]

11. United States pubmed.ncbi.nlm.nih.gov

An integrated analysis of Sacituzumab govitecan in relapsed or refractory metastatic triple-negative breast cancer. [2023]

12. England pubmed.ncbi.nlm.nih.gov

Safety and effectiveness of sacituzumab govitecan in patients with metastatic triple-negative breast cancer in real-world settings: first observations from an interdisciplinary breast cancer centre in Germany. [2023]