Patient description: The patient is a 53-year-old man complaining of frequent headaches, generalized bone pain and difficulty chewing that started 6 years ago and is getting worse. Examination shows bilateral swellings around the molars. The swellings have increased since his last examination. Several extraoral lesions of the head and face are detected. The swellings are non-tender and attached to the underlying bone. Further evaluation shows increased uptake of radioactive substance as well as an increase in urinary pyridinoline. The serum alkaline phosphatase is 300 IU/L (the normal range is 44- 147 IU/L). The patient's sister had the same problems. She was diagnosed with Paget's disease of bone when she was 52 years old. The diagnosis of Paget's Disease of Bone is confirmed and Bisphosphonate will be started as first-line therapy.

Clinical trial eligibility criteria: eligible ages (years): 18.0-999.0,  Relapsed or Refractory Multiple Myeloma Patients with relapsed/refractory multiple myeloma based on standard Renal function assessed by calculated creatinine clearance as follows Phase I subjects must have calculated creatinine clearance >=30ml/min by Cockcroft-Gault formula Phase II subjects must have calculated creatinine clearance >=30ml/min by Cockcroft-Gault formula Progressed (>25% increase in evaluable disease) or non response on Revlimid or within 60 days of stopping Revlimid > 1 prior regimen Total bilirubin <=1.5 x Upper limit of normal (ULN) AST (aspartate aminotransferase) or serum glutamic-oxaloacetic transaminase (SGOT) and alanine aminotransferase (ALT) or serum glutamic-pyruvic transaminase (SGPT) <=3 x ULN All study participants must be registered into the mandatory Revlimid REMS® program, and be willing and able to comply with the requirements of Revlimid REMS® Females of childbearing potential must have a negative serum or urine pregnancy test with a sensitivity of at least 50 mIU/mL (milli-International unit/milliliter) within 10  > grade 2 neuropathy > Cr (complete response) 2.5 LFTs (liver function test) > 2x nl (normal limit) Patient had myocardial infarction within 6 months prior to enrollment or has New York Heart Association (NYHA) Class III or IV heart failure, uncontrolled angina, severe uncontrolled ventricular arrhythmias, or electrocardiographic evidence of acute ischemia or active conduction system abnormalities. Prior to study entry, any ECG (electrocardiogram) abnormality at screening must be documented by the investigator as not medically relevant Known hypersensitivity to thalidomide or Revlimid (if applicable) The development of erythema nodosum if characterized by a desquamating rash while taking thalidomide or similar drugs Known seropositive for or active viral infection with human immunodeficiency virus (HIV), hepatitis B virus (HBV) or hepatitis C virus (HCV). Patients who are seropositive because of hepatitis B virus vaccine are eligible Female subject is pregnant or lactating. Confirmation that the subject is not pregnant must be established by a negative serum -human chorionic gonadotropin (hCG) pregnancy test result obtained during screening. Pregnancy testing is not required for postmenopausal or surgically sterilized women Female patients who are lactating or have a positive serum pregnancy test during the screening period, or a positive urine pregnancy test on Day 1 before first dose of study drug, if applicable Serious medical or psychiatric illness likely to interfere with participation in this clinical study