| Inclusion Criteria: | 1) Understand and voluntarily sign an informed consent form.
2) Age >/=18 years at the time of signing the informed consent form.
3) Able to adhere to the study visit schedule and other protocol requirements.
4) Have low or intermediate-1 IPSS risk category MDS (excluding 5q deletion)
5) RBC transfusion-dependent anemia defined as no transfusion free interval of >/= 56 consecutive days within the past 112 days.
6) ECOG performance status of 0-2 at study entry.
7) Laboratory test results within these ranges: Serum creatinine </= 1.5 mg/dL ,Total bilirubin </= 1.5 mg/dL ,AST (SGOT) and ALT (SGPT) </= 3 x ULN, ANC >/= 500 /uL, Platelet count >/= 30,000/uL (untransfused)
8) Disease free of prior malignancies for >/=2 years with exception of currently treated basal cell, squamous cell carcinoma of the skin, or carcinoma "insitu" of the cervix or breast
9) Patients who are on epoetin alfa or darbopoetin prior to enrollment will be allowed to enroll if they have failed such therapy, failure defined as transfusion requiring despite >/= 6 weeks of epoetin alfa at dose of 40,000 units/week and darbopoetin alfa at dose of 150 mcg/ 2 week. No washout period will be necessary. Upon study entry patients receiving epoetin alfa will be switched over to darbopoetin.
10) Females of childbearing potential (FCBP) must have a negative serum or urine pregnancy test with a sensitivity of at least 50 mIU/mL within 10–14 days prior to and again within 24 hours of prescribing lenalidomide and must either commit to continued abstinence from heterosexual intercourse or begin TWO acceptable methods of birth control, one highly effective method and one additional effective method AT THE SAME TIME, at least 4 weeks before she starts taking lenalidomide. FCBP must also agree to ongoing pregnancy testing.
11) continued from #10 Men must agree to use a latex condom during sexual contact with a female of child bearing potential even if they have had a successful vasectomy. |