{"denoms":[{"counts":[{"groupId":"BG000","value":"3"}],"units":"Participants"}],"groups":[{"description":"This study will employ a Simon optimal two-stage design. Patients will receive lenalidomide 25 mg daily for days 1-21 of each 28 day cycle. Rituximab 375 mg/m2 will be given weekly for 4 weeks beginning 1 week after the start of lenalidomide therapy (weeks 2-5), and then once 8 weeks later (week 13). Patients with stable disease or better after 4 cycles (week 16, in the absence of delays for toxicity) will be able to continue on therapy on the same lenalidomide schedule and with rituximab 375 mg/m2 given once every 8 weeks.","id":"BG000","title":"Lenalidomide and Rituximab"}],"measures":[{"classes":[{"categories":[{"measurements":[{"groupId":"BG000","value":"0"}],"title":"<=18 years"},{"measurements":[{"groupId":"BG000","value":"1"}],"title":"Between 18 and 65 years"},{"measurements":[{"groupId":"BG000","value":"2"}],"title":">=65 years"}]}],"paramType":"COUNT_OF_PARTICIPANTS","title":"Age, Categorical","unitOfMeasure":"Participants"},{"classes":[{"categories":[{"measurements":[{"groupId":"BG000","value":"1"}],"title":"Female"},{"measurements":[{"groupId":"BG000","value":"2"}],"title":"Male"}]}],"paramType":"COUNT_OF_PARTICIPANTS","title":"Sex: Female, Male","unitOfMeasure":"Participants"}]}