Study Combining SAR245409 With Rituximab or Bendamustine Plus Rituximab in Patients With Indolent Lymphoma, Mantle Cell Lymphoma and Chronic Lymphocytic Leukemia

All subjects will take SAR245409 twice daily. All subjects will receive SAR245409 as long as
there is clinical benefit.

Combination therapy with SAR245409, bendamustine and rituximab , will be administered over a
28 day cycle for up to 6 to 8 cycles.

Subjects receiving the doublet combination , SAR245409 plus rituximab will receive weekly
rituximab for 4 - 8 weeks. Monthly Rituximab may be continued beyond 8 weeks.

Inclusion criteria:

- A confirmed diagnosis of indolent non-Hodgkin lymphoma, mantle cell lymphoma or
chronic lymphocytic leukemia

- Evaluable disease or measurable disease

- Transfusion independent

- Able to take oral medication

- Male and Female subjects > 18 years

- Eastern Cooperative Oncology Group (ECOG) performance status ≤ 2

- Women of childbearing potential using adequate contraception

Exclusion criteria:

- Prior therapy with a PI3K, mTOR or dual PI3K/mTOR inhibitor resulting in adverse
events necessitating treatment discontinuation

- Eligible for a hematopoietic stem cell transplant (HSCT)

- The subject has received investigational or non-investigational cytotoxic
chemotherapy (i.e., cyclophosphamide), small molecule cancer therapy (i.e.,
imatinib), biologic cancer therapies other than rituximab (i.e., alemtuzumab,
cytokines, vaccines or other monoclonal antibodies) hormonal therapy, radio- or
immuno- conjugates (e.g. ibritumomab tiuxetan, tositumomab) or immunosuppressants to
treat malignancy within 4 weeks prior to Cycle 1, Day 1

- Radiation therapy within 2 weeks prior to Cycle 1, Day 1

- Autologous Hematopoietic Stem Cell Transplant (HSCT) within the past 16 weeks

- Prior allogeneic HSCT

- Active central nervous system (CNS) metastases or leptomeningeal involvement

- Positive Hepatitis B surface antigen (HBsAg) or Hepatitis C Antibody (anti-HCV)

- Hereditary or acquired immunodeficiency syndrome or human immunodeficiency virus
(HIV) infection

- Active peptic ulcer disease requiring treatment with proton pump inhibitors (e.g.
pantoprazole) or Type 2 histamine antagonists (e.g. cimetidine)

- Diagnosis or treatment for another malignancy within 3 years of enrollment with the
exception of complete resection of basal cell or squamous cell carcinoma of the skin,
an in situ malignancy or low-risk prostate cancer after curative therapy

- Inadequate bone marrow function

- Abnormal liver function

- Abnormal renal function

- Abnormal coagulation

The above information is not intended to contain all considerations relevant to a
patient's potential participation in a clinical trial.