Servier Announces Positive Topline Data from the Global Phase 3 Study of TIBSOVO® (ivosidenib tablets) in Combination with Azacitidine in Patients with Previously Untreated IDH1-mutated Acute Myeloid Leukemia

TIBSOVO is the first targeted therapy to show improved event-free survival and overall survival in combination with azacitidine compared to azacitidine monotherapy.

Safety profile consistent with previously published data in patients with IDH1-mutated acute myeloid leukemia.

The study recently halted further enrollment due to compelling efficacy data for TIBSOVO.

PARIS and BOSTON,Aug. 2,2021 -- Servier,a global pharmaceutical company,today announced the global Phase 3 double blinded placebo controlled AGILE study of TIBSOVO(ivosidenib tablets) in combination with the chemotherapy azacitidine in adults with previously untreated IDH1-mutated acute myeloid leukemia (AML) met its primary endpoint of event-free survival (EFS)1,2. Treatment with TIBSOVOin combination with azacitidine compared to azacitidine in combination with placebo demonstrated a statistically significant improvement in EFS. Additionally,the trial met all of its key secondary endpoints,including complete remission rate (CR rate),overall survival (OS),CR and complete remission with partial hematologic recovery rate (CRh rate) and objective response rate (ORR). The safety profile of TIBSOVO in combination with azacitidine was consistent with previously published data. The study recently halted further enrollment based on the recommendation of the Independent Data Monitoring Committee (IDMC),as a difference of clinical importance was noted between the treatment groups.

"The results of AGILE represent a major breakthrough and will bewelcome news for patients dealing with previously untreated IDH1-mutated acute myeloid leukemia," said Claude Bertrand,Executive Vice President,R&D,Servier Group. "We look forward to sharing the findings fromthis study with the medical community and with regulatory authorities around the world."

A full analysis of the AGILE trial will be submitted for a presentation at a future medical congress.

"Acute myeloid leukemia has a poor prognosis,especially for newly diagnosed patients who are not eligible for intensive chemotherapy," said Susan Pandya,M.D.,Vice President Clinical Development,Servier Pharmaceuticals. "TIBSOVO monotherapy has been instrumental in transforming outcomes for adult patients with newly diagnosed or relapsed refractory AML harboring an IDH1 mutation. These promising results from the AGILE study support the added benefit of inhibiting the mutant IDH1 enzyme in combination with standard chemotherapy in the newly diagnosed intensive chemotherapy ineligible setting. We look forward to presenting the full results of the AGILE trial to show how TIBSOVO in combination with azacitidine may improve outcomes in previously untreated patients with IDH1-mutated acute myeloid leukemia."

TIBSOVO*is currently approved in the U.S. as monotherapy for the treatment of adults with IDH1-mutant relapsed or refractory acute myeloid leukemia (AML),and for adults with newly diagnosed IDH1-mutant AML who are ≥75 years old or who have comorbidities that preclude the use of intensive induction chemotherapy. Recently,the U.S. Food and Drug Administration (FDA) accepted Servier's supplemental New Drug Application (sNDA) for TIBSOVO as a potential treatment for patients with previously treated IDH1-mutated cholangiocarcinoma. The sNDA was granted Priority Review by the FDA.

About AGILE Phase 3 Trial

The AGILE trial is a global,Phase 3,multicenter,double-blind,randomized,placebo-controlled clinical trial designed to evaluate the efficacy and safety ofTIBSOVO in combination with azacitidine compared to placebo in combination with azacitidine,in newly diagnosed AML patients non eligible for intensive chemotherapy. The study's primary endpoint is event-free survival (EFS),defined as the time from randomization until treatment failure,relapse from remission,or death from any cause,whichever occurs first. Treatment failure is defined as failure to achieve complete remission (CR) by Week 24.

Other key secondary endpoints included complete remission rate (CR rate),defined as the proportion of participants who achieve a CR; overall survival (OS),defined as the time from date of randomization to the date of death due to any cause; CR and complete remission with partial hematologic recovery (CRh) rate,defined as the proportion of participants who achieve a CR or CRh; and objective response rate (ORR),defined as the rate of CR,CR with incomplete hematologic recovery (CRi) (including CR with incomplete platelet recovery [CRp]),partial remission (PR),and morphologic leukemia-free state (MLFS).

About Acute Myeloid Leukemia

Acute Myeloid Leukemia (AML) is a cancer of the blood and bone marrow marked by rapid disease progression and is the most common acute leukemia affecting adults with approximately 20,000 new cases in the U.S.,and 43,000 cases in Europe each year3,4.The majority of patients with AML eventually relapse. Relapsed or refractory AML has a poor prognosis5.The five-year survival rate is approximately 27%3.For 6 to 10 percent of AML patients,the mutated IDH1 enzyme blocks normal blood stem cell differentiation,contributing to the genesis of acute leukemia6.

About Servier Pharmaceuticals

Servier Pharmaceuticals LLC is a commercial-stage company with a passion for innovation and improving the lives of patients,their families and caregivers. A privately held company,Servier has the unique freedom to devote its time and energy toward putting those who require our treatment and care first,with future growth driven by innovation in areas of unmet medical need.

As a growing leader in oncology,Servier is committed to finding solutions that will address today's challenges. The company's oncology portfolio of innovative medicines is designed to bring more life-saving treatments to a greater number of patients,across the entire spectrum of disease and in a variety of tumor types.

Servier believes co-creation is fundamental to driving innovation and is actively building alliances,acquisitions,licensing deals and partnerships that bring solutions and accelerate access to therapies. With our commercial expertise,global reach,scientific expertise and commitment to clinical excellence,Servier Pharmaceuticals is dedicated to bringing the promise of tomorrow to the patients that we serve.

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About Servier Group

Servier is a global pharmaceutical group governed by a Foundation. With a strong international presence in 150 countries and a total revenue of 4.7 billion euros in 2020,Servier employs 22,500 people worldwide. Servier is an independent group that invests over 20% of its brand-name revenue in Research and Development every year. To accelerate therapeutic innovation for the benefit of patients,the Group is committed to open and collaborative innovation with academic partners,pharmaceutical groups,and biotech companies. It also integrates the patient's voice at the heart of its activities.

A leader in cardiology,the ambition of the Servier Group is to become a renowned and innovative player in oncology. Its growth is based on a sustained commitment to cardiovascular and metabolic diseases,oncology,neuroscience and immuno-inflammatory diseases. To promote access to healthcare for all,the Servier Group also offers a range of quality generic drugs covering most pathologies.

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Press Contacts

Servier Group (France and worldwide)

Sonia Marques

presse@servier.com

+33 (0)1 55 72 40 21 / + 33 (0)7 84 28 76 13

Servier Pharmaceuticals (U.S.)

Megan Talon

megan.talon@servier.com

+1 857-895-4334

Disclosures

This release contains general information about the Servier Group and its entities (hereinafter "Servier and its Affiliates") and is intended for informational purposes only. The information is thought to be reliable; however,Servier and its Affiliates make no representation as to the completeness of the information contained herein or otherwise provided and accept no responsibility or liability,in contract,in tort,in negligence,or otherwise,should the information be found to be inaccurate or incomplete in any respect.

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This statement also contains forward-looking statements that are subject to varying levels of uncertainty and risk. Investigational new drugs and indications are subject to further scientific and medical review and regulatory approval. They are not approved for use by the FDA.

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The estimates,strategies,and views expressed in this document are based upon past or current data and information and are subject to change without notice.

About TIBSOVO®(ivosidenib tablets)

TIBSOVO®is indicated for the treatment of acute myeloid leukemia (AML) with a susceptible isocitrate dehydrogenase-1 (IDH1) mutation as detected by an FDA-approved test in:

Adult patients with newly-diagnosed AML who are ≥75 years old or who have comorbidities that preclude use of intensive induction chemotherapy.

Adult patients with relapsed or refractory AML.

IMPORTANT SAFETY INFORMATION

WARNING: DIFFERENTIATION SYNDROME

Patients treated with TIBSOVOhave experienced symptoms of differentiation syndrome,which can be fatal if not treated. Symptoms may include fever,dyspnea,hypoxia,pulmonary infiltrates,pleural or pericardial effusions,rapid weight gain or peripheral edema,hypotension,and hepatic,renal,or multi-organ dysfunction. If differentiation syndrome is suspected,initiate corticosteroid therapy and hemodynamic monitoring until symptom resolution.

WARNINGS AND PRECAUTIONS

Differentiation Syndrome: See Boxed WARNING.In the clinical trial,25% (7/28) of patients with newly diagnosed AML and 19% (34/179) of patients with relapsed or refractory AML treated with TIBSOVOexperienced differentiation syndrome. Differentiation syndrome is associated with rapid proliferation and differentiation of myeloid cells and may be life-threatening or fatal if not treated. Symptoms of differentiation syndrome in patients treated with TIBSOVOincluded noninfectious leukocytosis,peripheral edema,pyrexia,pleural effusion,pulmonary edema,pneumonitis,pericardial effusion,rash,fluid overload,tumor lysis syndrome,and creatinine increased. Of the 7 patients with newly diagnosed AML who experienced differentiation syndrome,6 (86%) patients recovered. Of the 34 patients with relapsed or refractory AML who experienced differentiation syndrome,27 (79%) patients recovered after treatment or after dose interruption of TIBSOVO. Differentiation syndrome occurred as early as 1 day and up to 3 months after TIBSOVOinitiation and has been observed with or without concomitant leukocytosis.

If differentiation syndrome is suspected,initiate dexamethasone 10 mg IV every 12 hours (or an equivalent dose of an alternative oral or IV corticosteroid) and hemodynamic monitoring until improvement. If concomitant noninfectious leukocytosis is observed,initiate treatment with hydroxyurea or leukapheresis,as clinically indicated. Taper corticosteroids and hydroxyurea after resolution of symptoms and administer corticosteroids for a minimum of 3 days. Symptoms of differentiation syndrome may recur with premature discontinuation of corticosteroid and/or hydroxyurea treatment. If severe signs and/or symptoms persist for more than 48 hours after initiation of corticosteroids,interrupt TIBSOVOuntil signs and symptoms are no longer severe.

QTc Interval Prolongation:Patients treated with TIBSOVOcan develop QT (QTc) prolongation and ventricular arrhythmias. One patient developed ventricular fibrillation attributed to TIBSOVO. Concomitant use of TIBSOVOwith drugs known to prolong the QTc interval (e.g.,anti-arrhythmic medicines,fluoroquinolones,triazole anti-fungals,5-HT3receptor antagonists) and CYP3A4 inhibitors may increase the risk of QTc interval prolongation. Conduct monitoring of electrocardiograms (ECGs) and electrolytes. In patients with congenital long QTc syndrome,congestive heart failure,or electrolyte abnormalities,or in those who are taking medications known to prolong the QTc interval,more frequent monitoring may be necessary.

Interrupt TIBSOVOif QTc increases to greater than 480 msec and less than 500 msec. Interrupt and reduce TIBSOVOif QTc increases to greater than 500 msec. Permanently discontinue TIBSOVOin patients who develop QTc interval prolongation with signs or symptoms of life-threatening arrhythmia.

Guillain-BarréSyndrome:Guillain-Barrésyndrome occurred in <1% (2/258) of AML patients treated with TIBSOVOin the clinical study. Monitor patients taking TIBSOVOfor onset of new signs or symptoms of motor and/or sensory neuropathy such as unilateral or bilateral weakness,sensory alterations,paresthesias,or difficulty breathing. Permanently discontinue TIBSOVOin patients who are diagnosed with Guillain-Barrésyndrome.

ADVERSE REACTIONS

The most common adverse reactions including laboratory abnormalities (≥20%) were hemoglobin decreased (60%),fatigue (43%),arthralgia (39%),calcium decreased (39%),sodium decreased (39%),leukocytosis (38%),diarrhea (37%),magnesium decreased (36%),edema (34%),nausea (33%),dyspnea (32%),uric acid increased (32%),potassium decreased (32%),alkaline phosphatase increased (30%),mucositis (28%),aspartate aminotransferase increased (27%),phosphatase decreased (25%),electrocardiogram QT prolonged (24%),rash (24%),creatinine increased (24%),cough (23%),decreased appetite (22%),myalgia (21%),constipation (20%),and pyrexia (20%).

In patients with newly diagnosed AML,the most frequently reported Grade ≥3 adverse reactions (≥5%) were fatigue (14%),differentiation syndrome (11%),electrocardiogram QT prolonged (11%),diarrhea (7%),nausea (7%),and leukocytosis (7%). Serious adverse reactions (≥5%) were differentiation syndrome (18%),electrocardiogram QT prolonged (7%),and fatigue (7%). There was one case of posterior reversible encephalopathy syndrome (PRES).

In patients with relapsed or refractory AML,the most frequently reported Grade ≥3 adverse reactions (≥5%) were differentiation syndrome (13%),electrocardiogram QT prolonged (10%),dyspnea (9%),leukocytosis (8%),and tumor lysis syndrome (6%). Serious adverse reactions (≥5%) were differentiation syndrome (10%),leukocytosis (10%),and electrocardiogram QT prolonged (7%). There was one case of progressive multifocal leukoencephalopathy (PML).

DRUG INTERACTIONS

Strong or Moderate CYP3A4 Inhibitors:Reduce TIBSOVOdose with strong CYP3A4 inhibitors. Monitor patients for increased risk of QTc interval prolongation.

Strong CYP3A4 Inducers:Avoid concomitant use with TIBSOVO.

Sensitive CYP3A4 Substrates:Avoid concomitant use with TIBSOVO.

QTc Prolonging Drugs:Avoid concomitant use with TIBSOVO. If co-administration is unavoidable,monitor patients for increased risk of QTc interval prolongation.

LACTATION

Because many drugs are excreted in human milk and because of the potential for adverse reactions in breastfed children,advise women not to breastfeed during treatment with TIBSOVOand for at least 1 month after the last dose.

Please see fullPrescribing Information,including Boxed WARNING.

References

Data on file. Servier. July 30,2021

ClinicalTrials.gov. Study of AG-120 (Ivosidenib) vs. Placebo in Combination With Azacitidine in Patients With Previously Untreated Acute Myeloid Leukemia With an IDH1 Mutation (AGILE). Available at: https://clinicaltrials.gov/ct2/show/NCT03173248. Last accessed: July 2021.

National Cancer Institute Surveillance,Epidemiology,and End Results Program. Cancer Stat Facts: Acute Myeloid Leukemia (AML). https://seer.cancer.gov/statfacts/html/amyl.html. Last accessed: July 2021.

American Cancer Society. Acute Myeloid Leukemia (AML). https://www.cancer.org/content/dam/CRC/PDF/Public/8674.00.pdf. Accessed July 2021.

Kumar C. Genetic Abnormalities and Challenges in the Treatment of Acute Myeloid Leukemia. Genes Cancer. 2011; 2:95-107.

DiNardo CD,Stein EM,de Botton S,et al. Durable Remissions from Ivosidenib in IDH1-Mutated Relapsed or Refractory AML. N Engl J Med 2018;378:2386-98.

* Servier has an exclusive collaboration and license agreement with CStone for the development and commercialization of TIBSOVO (ivosidenib tablets) in Mainland China,Taiwan,Hong Kong,Macau and Singapore.

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