Female patients of child-bearing potential (pre-menopausal and not surgically sterilized) who are breast-feeding or have a positive blood beta-human chorionic gonadotropin pregnancy test at Screening Positive beta human chorionic gonadotropin (HCG) test in a woman with child bearing potential defined as not post-menopausal for months or no previous surgical sterilization; Negative pregnancy test in female patients of childbearing potential, defined as not post-menopausal for months or no previous surgical sterilization. Women of child bearing potential must be willing to use an effective contraceptive measure while on study. Positive beta HCG test in a woman with child bearing potential defined as not post-menopausal for months or no previous surgical sterilization Negative beta human chorionic gonadotropin (HCG) test in a woman with child bearing potential defined as not post-menopausal for months or no previous surgical sterilization and willing to use an effective contraceptive measure while on study. Positive beta HCG in female of child-bearing potential defined as not post-menopausal for months or no previous surgical sterilization or breast-feeding. Positive beta human chorionic gonadotropin (HCG) in female of child-bearing potential defined as not postmenopausal for months or no previous surgical sterilization or lactating females. Positive beta human chorionic gonadotropin (HCG) test in a woman with child bearing potential defined as not post-menopausal for months or no previous surgical sterilization Negative beta HCG test in a woman with child bearing potential, defined as not post-menopausal for months or no previous surgical sterilization; women of child bearing potential must be willing to use an effective contraceptive measure while on study Negative pregnancy test in a woman with childbearing potential defined as not post-menopausal for months or no previous surgical sterilization Negative beta human chorionic gonadotropin (HCG) test in a woman with child bearing potential defined as not post-menopausal for months Positive beta human chorionic gonadotropin (HCG) in female of child-bearing potential defined as not post-menopausal for months or no previous surgical sterilization or lactating females Pregnancy (positive beta human chorionic gonadotropin [HCG] test in a woman with child bearing potential defined as not post-menopausal for months or no previous surgical sterilization) or currently breast-feeding; pregnancy testing is not required for post-menopausal or surgically sterilized women Negative beta-human chorionic gonadotropin (HCG) test in a woman of child-bearing potential, defined as not post-menopausal for months or no previous surgical sterilization Negative pregnancy test in female patients of childbearing potential, defined as not post-menopausal for months or no previous surgical sterilization; women of child bearing potential must be willing to use an effective contraceptive measure while on study Positive pregnancy test in a woman with child bearing potential defined as not post-menopausal for months or no previous surgical sterilization Negative beta human chorionic gonadotropin (HCG) test in a woman with child bearing potential, defined as not post-menopausal for months or no previous surgical sterilization; women of child bearing potential must be willing to use an effective contraceptive measure while on study Negative beta human chorionic gonadotropin (HCG) test in a woman with child bearing potential defined as not post-menopausal for months and no previous surgical sterilization Positive pregnancy test in a woman with child bearing potential defined as not post-menopausal for months or no previous surgical sterilization Pregnancy: positive pregnancy test in a woman with child bearing potential defined as not post-menopausal for months or no previous surgical sterilization Pregnancy (positive beta human chorionic gonadotropin [HCG] test in a woman with child bearing potential defined as not post-menopausal for months or no previous surgical sterilization) or currently breast-feeding; pregnancy testing is not required for post-menopausal or surgically sterilized women Negative beta human chorionic gonadotropin (HCG) test in a woman with child bearing potential (defined as not post-menopausal for months or no previous surgical sterilization) or currently breast-feeding; pregnancy testing is not required for post-menopausal or surgically sterilized women Positive pregnancy test in a female patient of childbearing potential defined as not post-menopausal for twelve months or no previous surgical sterilization Negative beta human chorionic gonadotropin (HCG) test in a woman with child bearing potential defined as not post-menopausal for months or no previous surgical sterilization and willing to ongoing pregnancy testing while on treatment with lenalidomide Positive beta human chorionic gonadotropin (HCG) in female of child-bearing potential defined as not post-menopausal for months or no previous surgical sterilization or lactating females. Positive beta human chorionic gonadotropin (HCG) in female of child-bearing potential defined as not postmenopausal for months or no previous surgical sterilization or lactating females Negative pregnancy test in a woman with child bearing potential defined as not post-menopausal for months or no previous surgical sterilization Positive beta human chorionic gonadotropin (HCG) in female of child-bearing potential defined as not post-menopausal for months or no previous surgical sterilization or lactating females Negative beta human chorionic gonadotropin (HCG) test in a woman with child bearing potential, defined as not post-menopausal for months or no previous surgical sterilization; women of child bearing potential must be willing to use an effective contraceptive measure while on study Patient of child-bearing potential is evidently pregnant (eg, positive human chorionic gonadotropin test) or is breast feeding; a woman with child bearing potential is defined as not surgically sterile or being post-menopausal for less than months Negative beta human chorionic gonadotropin (HCG) test within days in a woman with child bearing potential defined as not post-menopausal for months or no previous surgical sterilization); pregnancy testing is not required for post-menopausal or surgically sterilized women Negative beta human chorionic gonadotropin (HCG) test in a woman with child bearing potential, defined as not post-menopausal for months or no previous surgical sterilization; women of child bearing potential must be willing to use an effective contraceptive measure while on study Negative beta human chorionic gonadotropin (HCG) test in a woman with child bearing potential defined as not post-menopausal for months or no previous surgical sterilization and willing to use an effective contraceptive measure while on study Positive beta HCG in female of child-bearing potential defined as not post-menopausal for months or no previous surgical sterilization or breast-feeding Negative beta human chorionic gonadotropin (HCG) test in a woman with childbearing potential defined as not post-menopausal for months or no previous surgical sterilization and if fertile, males and females must agree to use contraceptives Positive beta human chorionic gonadotropin (HCG) test in a woman with child bearing potential, defined as not post-menopausal for months or no previous surgical sterilization Pregnant (Positive Beta HCG test in a woman with child bearing potential defined as not post-menopausal for months or no previous surgical sterilization) or currently breast-feeding. Pregnancy testing is not required for post-menopausal or surgically sterilized women. Negative beta human chorionic gonadotropin (HCG) test in a woman with child bearing potential defined as not post-menopausal for months or no previous surgical sterilization and willing to use an effective contraceptive measure while on study Positive beta HCG in female of child-bearing potential defined as not post-menopausal for months or no previous surgical sterilization or breast-feeding Negative beta human chorionic gonadotropin (HCG) test in a woman with child-bearing potential, defined as not post-menopausal for months or no previous surgical sterilization Negative beta human chorionic gonadotropin (HCG) test in a woman with child bearing potential defined as not post-menopausal for months or no previous surgical sterilization and willing to ongoing pregnancy testing while on treatment with lenalidomide Positive beta human chorionic gonadotropin (HCG) test in a woman with child bearing potential defined as not post-menopausal for months or no previous surgical sterilization Negative beta human chorionic gonadotropin (HCG) test in a woman with child bearing potential defined as not post-menopausal for months and no previous surgical sterilization Negative beta human chorionic gonadotropin (HCG) test in woman with child bearing potential, defined as not post-menopausal for months or no previous sterilization Positive beta-human chorionic gonadotropin (HCG) in female of child-bearing potential defined as not post-menopausal for months or no previous surgical sterilization or lactating females Positive beta human chorionic gonadotropin (HCG) within days prior to consent in female of child-bearing potential defined as not post-menopausal for months or no previous surgical sterilization or breast-feeding