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Genentech Provides Update on Phase III Study of Tecentriq in Combination With Paclitaxel for People With Metastatic Triple-Negative Breast Cancer

August 6, 2020 Off By BusinessWire

SOUTH SAN FRANCISCO, Calif.–(BUSINESS WIRE)–Genentech, a member of the Roche Group (SIX: RO, ROG; OTCQX: RHHBY), today announced that the Phase III IMpassion131 study, evaluating Tecentriq® (atezolizumab) in combination with paclitaxel (chemotherapy), in comparison to placebo plus paclitaxel, did not meet statistical significance on its primary endpoint of progression-free survival (PFS) for the initial (first-line) treatment of people with metastatic triple-negative breast cancer (TNBC), in the PD-L1-positive population.

The data for the secondary endpoint of overall survival (OS) showed a negative trend, however, the study was not powered for the secondary endpoint of OS and data were immature at time of analysis. OS follow-up is planned to continue until final analysis. Safety for the Tecentriq combination appeared to be consistent with the known safety profile of the individual medicines, and no new safety signals were identified.

In the previous IMpassion130 study, Tecentriq in combination with Abraxane® (paclitaxel protein-bound particles for injectable suspension [albumin-bound]; nab-paclitaxel) demonstrated a statistically significant PFS benefit and, while not formally tested, showed clinically meaningful improvements in OS for people with metastatic TNBC and whose tumors express PD-L1 (≥1%). Tecentriq in combination with nab-paclitaxel is approved under accelerated approval by the U.S. Food and Drug Administration for the treatment of adults with unresectable locally advanced or metastatic TNBC and whose tumors express PD-L1 (≥1%).

“While we are disappointed by the results from the IMpassion131 study, we are grateful for all the patients, families and physicians who were involved in the study,” said Levi Garraway, M.D., Ph.D., chief medical officer and head of Global Product Development. “Today’s results underscore the need to better understand the cancer and immune system interactions, including the chemotherapy backbone and associated regimens. We remain committed to finding optimal treatments for all people living with this aggressive disease.”

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Full results from IMpassion131 are being discussed with global health authorities and will be presented at a future medical meeting. The insights will also be used to inform existing and future studies in TNBC with Tecentriq in combination with paclitaxel.

Genentech has an extensive development program for Tecentriq, including multiple ongoing and planned Phase III studies across lung, genitourinary, skin, breast, gastrointestinal, gynecological, and head and neck cancers. This includes studies evaluating Tecentriq both alone and in combination with other medicines.

About the IMpassion131 study

The IMpassion131 study is a Phase III, multi-center, randomized, double-blind study evaluating the efficacy and safety of Tecentriq in combination with paclitaxel, in comparison to placebo plus paclitaxel, in people with previously untreated, inoperable, locally advanced or metastatic TNBC. The study enrolled 651 people who were randomized in a 2:1 ratio to receive Tecentriq or placebo plus paclitaxel. The primary endpoint is PFS per investigator assessment (RECIST 1.1) in the PD-L1-positive population, followed by intention-to-treat (ITT) population. Secondary endpoints include OS, objective response rate, and duration of response in the PD-L1-positive and ITT populations.

About triple-negative breast cancer

Breast cancer is the most common cancer among women worldwide. According to the American Cancer Society, close to 280,000 people in the United States will be diagnosed with invasive breast cancer, and more than 42,000 will die from the disease in 2020. Breast cancer is not one, but many diseases based on the biology of each tumor. In triple-negative breast cancer, tumor cells lack hormone receptors and do not have excess HER2 protein. Approximately 15 percent of breast cancers are triple-negative based on the results of diagnostic tests. It is an aggressive form of the disease with few treatment options.

About Tecentriq (atezolizumab)

Tecentriq is a monoclonal antibody designed to bind with a protein called PD-L1. Tecentriq is designed to bind to PD-L1 expressed on tumor cells and tumor-infiltrating immune cells, blocking its interactions with both PD-1 and B7.1 receptors. By inhibiting PD-L1, Tecentriq may enable the re-activation of T cells. Tecentriq may also affect normal cells.

Tecentriq U.S. Indications (pronounced ‘tē-SEN-trik’)

Tecentriq is a prescription medicine used to treat adults with:

A type of bladder and urinary tract cancer called urothelial carcinoma.

Tecentriq may be used in patients with urothelial carcinoma if their bladder cancer has spread or cannot be removed by surgery, and if they have any one of the following conditions:

They are not able to take chemotherapy that contains a medicine called cisplatin and their cancer tests positive for “PD-L1” or
They are not able to take chemotherapy that contains any platinum regardless of the levels of “PD-L1” status or
They have tried chemotherapy that contains platinum and it did not work or is no longer working.

The approval of Tecentriq in these patients is based on a study that measured the amount of time until patients’ disease worsened. Continued approval for this use may depend on the results of an ongoing study to confirm benefit.

A type of lung cancer called non-small cell lung cancer (NSCLC).

Tecentriq may be used alone as the first treatment in patients with lung cancer if:

Their cancer has spread or grown and
Their cancer tests positive for “high PD-L1”, and
Their tumor does not have an abnormal “EGFR” or “ALK” gene.

Tecentriq may be used with the medicines bevacizumab, paclitaxel, and carboplatin as the first treatment in patients with lung cancer if:

Their cancer has spread or grown, and
Is a type called “non-squamous NSCLC”, and
Their tumor does not have an abnormal “EGFR” or “ALK” gene.

Tecentriq may be used with the medicines paclitaxel protein-bound and carboplatin as the first treatment in patients with lung cancer if:

Their cancer has spread or grown, and
Is a type called “non-squamous NSCLC”, and
Their tumor does not have an abnormal “EGFR” or “ALK” gene.

Tecentriq may be used alone in patients with lung cancer if:

Their cancer has spread or grown and
They have tried chemotherapy that contains platinum, and it did not work or is no longer working.
If a patient’s tumor has an abnormal EGFR or ALK gene, they should have also tried an FDA-approved therapy for tumors with these abnormal genes, and it did not work or is no longer working.

A type of breast cancer called triple-negative breast cancer (TNBC).

Tecentriq may be used with the medicine paclitaxel protein-bound in patients with TNBC when their breast cancer:

Has spread or cannot be removed by surgery and
Their cancer tests positive for “PD-L1”.

A type of lung cancer called small cell lung cancer (SCLC).

Tecentriq may be used with the chemotherapy medicines carboplatin and etoposide as the first treatment in patients with SCLC when their lung cancer is a type of lung cancer called “extensive-stage small cell lung cancer,” which means that it has spread or grown.

A type of liver cancer called hepatocellular carcinoma (HCC).

Tecentriq may be used with the medicine bevacizumab when a patient’s liver cancer:

Has spread or cannot be removed by surgery, and
The patient has not received other medicines by mouth or injection through their vein (IV) to treat their cancer.

A type of skin cancer called melanoma.

Tecentriq may be used with the medicines cobimetinib and vemurafenib when a patient’s melanoma:

Has spread or cannot be removed by surgery, and
Their cancer has a certain type of abnormal “BRAF” gene. Their healthcare provider will perform a test to make sure this Tecentriq combination is right for them.

It is not known if Tecentriq is safe and effective in children.

Important Safety Information

The most important information about Tecentriq is:

Tecentriq can cause the immune system to attack normal organs and tissues and can affect the way they work. These problems can sometimes become serious or life-threatening and can lead to death.

Patients should call or see their healthcare provider right away if they get any symptoms of the following problems or these symptoms get worse.

Tecentriq can cause serious side effects, including:

Lung problems (pneumonitis)–signs and symptoms of pneumonitis may include new or worsening cough, shortness of breath and chest pain
Liver problems (hepatitis)–signs and symptoms of hepatitis may include yellowing of the skin or the whites of the eyes, severe nausea or vomiting, pain on the right side of the stomach area (abdomen), drowsiness, dark urine (tea-colored), bleeding or bruising more easily than normal and feeling less hungry than usual
Intestinal problems (colitis)–signs and symptoms of colitis may include diarrhea (loose stools) or more bowel movements than usual; blood or mucus in stools or dark, tarry, sticky stools; and severe stomach area (abdomen) pain or tenderness
Hormone gland problems (especially the thyroid, adrenal glands, pancreas, and pituitary)–signs and symptoms that the hormone glands are not working properly may include headaches that will not go away or unusual headaches, extreme tiredness, weight gain or weight loss, dizziness or fainting, feeling more hungry or thirsty than usual, hair loss, changes in mood or behavior (such as decreased sex drive, irritability, or forgetfulness), feeling cold, constipation, the voice gets deeper, urinating more often than usual, nausea or vomiting and stomach area (abdomen) pain
Problems in other organs–signs and symptoms may include severe muscle weakness, numbness or tingling in hands or feet, confusion, blurry vision, double vision, or other vision problems, changes in mood or behavior, extreme sensitivity to light, neck stiffness, eye pain or redness, skin blisters or peeling, chest pain, irregular heartbeat, shortness of breath or swelling of the ankles
Severe infections–signs and symptoms of infection may include fever, cough, flu-like symptoms, pain when urinating and frequent urination or back pain
Severe infusion reactions–signs and symptoms of infusion reactions may include chills or shaking, itching or rash, flushing, shortness of breath or wheezing, swelling of the face or lips, dizziness, fever, feeling like passing out and back or neck pain

Getting medical treatment right away may help keep these problems from becoming more serious. A healthcare provider may treat patients with corticosteroid or hormone replacement medicines. A healthcare provider may delay or completely stop treatment with Tecentriq if patients have severe side effects.

Before receiving Tecentriq, patients should tell their healthcare provider about all of their medical conditions, including if they:

Have immune system problems (such as Crohn’s disease, ulcerative colitis, or lupus); have had an organ transplant; have lung or breathing problems; have liver problems; have a condition that affects the nervous system (such as myasthenia gravis or Guillain-Barre syndrome); or are being treated for an infection
Are pregnant or plan to become pregnant. Tecentriq can harm an unborn baby. Patients should tell their healthcare provider right away if they become pregnant or think they may be pregnant during treatment with Tecentriq.

Females who are able to become pregnant:
- Should have a healthcare provider do a pregnancy test before they start treatment with Tecentriq and
- Should use an effective method of birth control during their treatment and for at least 5 months after the last dose of Tecentriq
Are breastfeeding or plan to breastfeed. It is not known if Tecentriq passes into breast milk. Patients should not breastfeed during treatment and for at least 5 months after the last dose of Tecentriq.

Patients should tell their healthcare provider about all the medicines they take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.

The most common side effects of Tecentriq when used alone include:

Feeling tired or weak
Nausea
Cough
Shortness of breath
Decreased appetite

The most common side effects of Tecentriq when used in lung cancer with other anti-cancer medicines include:

Feeling tired or weak
Nausea
Hair loss
Constipation
Diarrhea
Decreased appetite

The most common side effects of Tecentriq when used in TNBC with paclitaxel protein-bound include:

Hair loss
Tingling or numbness in hands and feet
Feeling tired
Nausea
Diarrhea
Low red blood cells (anemia)
Constipation
Cough
Headache
Low white blood cells
Vomiting
Decreased appetite

The most common side effects of Tecentriq when used in hepatocellular carcinoma with bevacizumab include:

High blood pressure
Feeling tired or weak
Too much protein in the urine

The most common side effects of Tecentriq when used in melanoma with cobimetinib and vemurafenib include:

Skin rash
Pain in the joint, muscle, or bone
Feeling tired or weak
Liver injury
Fever
Nausea
Itching
Swelling of legs or arms
Swelling of the mouth (sometimes with sores)
Low thyroid hormone levels
Vomiting
Skin sensitivity to sunlight

Tecentriq may cause fertility problems in females, which may affect their ability to have children. Patients should talk to their healthcare provider if they have concerns about fertility.

These are not all the possible side effects of Tecentriq. Patients should ask their healthcare provider or pharmacist for more information. Patients should call their doctor for medical advice about side effects of Tecentriq.

Report side effects to the FDA at (800) FDA-1088 or http://www.fda.gov/medwatch. Report side effects to Genentech at (888) 835-2555.

Please visit http://www.Tecentriq.com for the full Tecentriq Prescribing Information for additional Important Safety Information.

About Genentech in cancer immunotherapy

Genentech has been developing medicines to redefine treatment in oncology for more than 35 years, and today, realizing the full potential of cancer immunotherapy is a major area of focus. With more than 20 immunotherapy molecules in development, Genentech is investigating the potential benefits of immunotherapy alone, and in combination with various chemotherapies, targeted therapies and other immunotherapies with the goal of providing each person with a treatment tailored to harness their own unique immune system.

In addition to Genentech’s approved PD-L1 checkpoint inhibitor, the company’s broad cancer immunotherapy pipeline includes other checkpoint inhibitors, individualized neoantigen therapies and T cell bispecific antibodies. For more information visit http://www.gene.com/cancer-immunotherapy.

About Genentech

Founded more than 40 years ago, Genentech is a leading biotechnology company that discovers, develops, manufactures and commercializes medicines to treat patients with serious and life-threatening medical conditions. The company, a member of the Roche Group, has headquarters in South San Francisco, California. For additional information about the company, please visit http://www.gene.com.