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Place title here, using this font Place authorship here, using this font and using superscript for institutional affiliation1, etc. Place institutional affiliation here, using this font METHODS BACKGROUND RESULTS Response • Response seen in 17/27 patients, resulting in an overall response rate of 63%: – CR was seen in 2 (7%) – VGPR in 3 (11%) – PR in 12 (44%) – SD for 9 (33%) – Unevaluable in 1 (3%) • 3 patients have not yet had a disease evaluation • 1 patient was unevaluable (died before disease evaluation) • With median follow-up of 24 months, median progression-free survival is 9.8 months and median overall survival is 31.5 months. • Lenalidomide is a highly effective treatment in relapsed multiple myeloma (MM), particularly when used in combination with weekly oral dexamethasone • Over 30% of patients with myeloma have renal insufficiency • As lenalidomide is renally excreted, little information is available about the optimal use of lenalidomide in myeloma patients with impaired kidney function • Defining a safe and effective dose of lenalidomide in this context is critical • Eligible patients had previously treated MM with renal impairment defined as creatinine clearance <60 mL/min measured within 21 days prior to registration • Patients previously treated with lenalidomide were required to demonstrate clinical response (any duration) or stable disease with progression-free interval of >6 months from start of that therapy • All patients received dexamethasone 40 mg orally on days 1, 8, 15 and 22 of a 28-day cycle • Prophylactic anticoagulation consisted of either 81 mg or 325 mg per day of aspirin • Patients also received lenalidomide orally every 1 or 2 days on days 1-21 of a 28-day cycle (Table 1) – Starting doses were as in U.S. Product Insert – Dose escalation follows a standard 3+3 design • 30 patients have been enrolled to the study – Groups, cohorts and dosing is outlined in Table 1 – Patient characteristics are summarized in Table 2 – The regimen was well tolerated» MTD has not been reached in any group » No DLTs have occurred to date Toxicity • The most commonly reported clinical adverse events (all grades, independent of attribution) across all patients included infections, hyperglycemia, constipation, dizziness, hyponatremia, hypocalcemiaand tremor • Hematological toxicities (grade 3-4) occurred in 13/21 (62%) patients, mostly neutropenia and thrombocytopenia • Grade 3-4 events at least possibly related to the regimen occurred in 70% and included pneumonia (26%) and otitismedia (9%) Table 1 Sample text sample text sample text sample text sample text sample text sample text sample text sample text sample text. 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