Claims for Patent: 6,682,734

Summary for Patent: 6,682,734

Title:	Therapeutic application of chimeric and radiolabeled antibodies to human B lymphocyte restricted differentiation antigen for treatment of B cell lymphoma
Abstract:	Disclosed herein are therapeutic treatment protocols designed for the treatment of B cell lymphoma. These protocols are based upon therapeutic strategies which include the use of administration of immunologically active mouse/human chimeric anti-CD20 antibodies, radiolabeled anti-CD20 antibodies, and cooperative strategies comprising the use of chimeric anti-CD20 antibodies and radiolabeled anti-CD20 antibodies.
Inventor(s):	Anderson; Darrell R. (Escondido, CA), Hanna; Nabil (Olivenhain, CA), Leonard; John E. (Encinitas, CA), Newman; Roland A. (San Diego, CA), Reff; Mitchell E. (San Diego, CA), Rastetter; William H. (Rancho Sante Fe, CA)
Assignee:	IDEC Pharmaceuticals Corporation (San Diego, CA)
Application Number:	08/475,813
Patent Claims:	1. A method for the treatment of B cell lymphoma comprising the steps of: 1) administering to a human, at a first administration period, a therapeutically effective amount of a chimeric anti-CD20 antibody derived from a transfectoma having ATCC deposit number 69119; and 2) administering to said human at another administration period, a therapeutically effective amount of a radiolabeled anti-CD20 antibody, said antibody being derived from a hybridoma having ATCC deposit number HBE 1388. 2. The method of claim 1 wherein the therapeutically effective amount of said chimeric anti-CD20 antibody ranges from about 0.001 to about 30 mg/kg body weight. 3. The method of claim 2 wherein said therapeutically effective dosage of said chimeric anti-CD20 antibody more preferably ranges from 0.01 to about 25 mg/kg body weight. 4. The method of claim 3 wherein said therapeutically effective dosage of said chimeric anti-CD20 antibody most preferably ranges from 0.4 to about 20.0 mg/kg body weight. 5. The method of claim 1 wherein said therapeutically effective amount of the chimeric anti-CD20 antibody is administered once a week for about 2 to 10 weeks during said first administration period. 6. The method of claim 1 wherein the radiolabeled anti-CD20 antibody is radiolabeled with a radiolabel selected from the group consisting of iodine [131], and yttrium [90]. 7. The method of claim 6, wherein the radiolabel is iodine [131] and the therapeutically effective dosage of the iodine [131] radiolabeled anti-CD20 antibody ranges from between about 5 to about 40 mCi for a single treatment dosage. 8. The method of claim 1, wherein a diagnostically effective amount of a diagnostic radionuclide labeled anti-CD20 antibody is administered prior to administration of said radiolabeled anti-CD20 antibody. 9. The method of claim 8 wherein a diagnostically effective amount of a diagnostic radionuclide labeled anti-CD20 anti-body comprising indium [111] as the diagnostic radionuclide is administered prior to administration of said radiolabeled anti-CD20 antibody. 10. The method of claim 9 wherein the diagnostically effective amount is less than about 5 mCi. 11. The method of claim 9 wherein the diagnostic radio-nuclide labeled anti-CD20 antibody comprises either the chimeric anti-CD20 antibody produced by transfectoma having ATCC deposit number 69119 or the anti-CD20 antibody produced by a hybridoma having ATCC deposit number HB11388. 12. The method of claim 1 wherein prior to administration of the radiolabeled anti-CD20 antibody peripheral stem cells or bone marrow is harvested from said human. 13. The method of claim 12 wherein said peripheral stem cells or bone marrow is reinfused into said human.

Details for Patent 6,682,734

Applicant	Tradename	Biologic Ingredient	Dosage Form	BLA	Approval Date	Patent No.	Expiredate
Acrotech Biopharma Llc	ZEVALIN	ibritumomab tiuxetan	Injection	125019	02/19/2002		2021-01-27

International Patent Family for US Patent 6,682,734

Country	Patent Number	Estimated Expiration
Austria	139900
Austria	196606
Austria	421335
Austria	431158
Australia	5603294
Australia	688743
Bulgaria	62386