Formulations and methods for treating amyloidosis

1. A method of treating a patient suffering from AA amyloidosis and having renal impairment comprising

measuring a first creatinine clearance rate of the patient and determining it to be (a) less than about 30 mL/min, (b) from about 30 to about 80 mL/min or (c) greater than about 80 mL/min, and

orally administering to said patient, in dependence on which rate is found, respectively,

(a), a dose of 400 mg twice a day of an active agent which is 1,3-propane disulfonic acid or a pharmaceutically acceptable salt thereof, in a formulation with a pharmaceutically acceptable carrier, such that when said dose is orally administered to said patient for multiple administrations, a mean C max after a single administration of about 500-2,000 ng/mL±20% is achieved;

(b), dose of 800 mg twice a day of said active agent in a formulation with a pharmaceutically acceptable carrier, such that when said dose is orally administered to said patient for multiple administrations, a mean C max after a single administration of about 500-2,000 ng/mL±20% is achieved; or

(c), a dose of 1200 mg twice a day of said active agent, in a formulation with a pharmaceutically acceptable carrier, such that when said dose is orally administered to said patient for multiple administrations, a mean C max after a single administration of about 500-2,000 ng/mL±20% is achieved; and

measuring a second creatinine clearance rate of said patient and determining it to be in a different rate range (a), (b) or (c), as defined above, from said first creatinine clearance rate, and orally administering to said patient an active agent dose (a), (b) or (c) as defined above, corresponding to said different rate.

2. A method of claim 1 , wherein the formulation is administered without food.

3. The method of claim 2 , wherein the administration without food results in an increase in bioavailability of about 25% or greater compared to administration with food.

4. The method of claim 3 , wherein the subject is informed to administer the composition at least 1 or 2 hours before or after any meals.

5. The method of claim 1 wherein said mean C max after a single administration for (a), (b) and (c) is about 850 ng/mL±50 ng/mL.

6. The method of claim 1 , comprising measuring a third creatinine clearance rate of said patient and determining it to be in a different rate range (a), (b) or (c), as defined above, from said first and second creatinine clearance rates, and orally administering to said patient an active agent dose (a), (b) or (c) as defined above, corresponding to said different rate.

7. The method of claim 1 wherein creatinine clearance rate is stabilized or improved in the patient.

8. The method of claim 1 , wherein said active agent is administered in combination with a second active agent.

9. The method of claim 8 , wherein the second agent is selected from the group consisting of anti-inflammatory agents, colchicine, cytotoxic agents, chemotherapeutic agents, anti-TNF agents, antibiotics, and combinations thereof.