Dosage regimes for the administration of an anti-CD25 ADC
View Patent ↗The present disclosure relates to novel dosage regimes for the treatment of pathological conditions, such as cancer, with Antibody Drug Conjugates (ADCs). In particular, the present disclosure relates to novel dosage regimes for the administration of ADCs which bind to CD25 (CD25-ADCS).
1. A method of treating a proliferative disease in a subject, said method comprising administering to a subject a CD25-ADC, wherein the CD25-ADC is administered to the subject in a dosage regime where the dose is reduced following the second treatment cycle, wherein each treatment cycle is 3 weeks and the reduced dose is 25 to 55 μg/kg, and wherein the CD25-ADC has the chemical structure:
where the Ab is a CD25 antibody comprising:
a VH domain comprising a VH CDR1 with the amino acid sequence of SEQ ID NO:3, a VH CDR2 with the amino acid sequence of SEQ ID NO:4, and a VH CDR3 with the amino acid sequence of SEQ ID NO:5, and
a VL domain comprising a VL CDR1 with the amino acid sequence of SEQ ID NO:6, a VL CDR2 with the amino acid sequence of SEQ ID NO:7, and a VL CDR3 with the amino acid sequence of SEQ ID NO:8,
and the DAR (drug to antibody ratio) is between 1 and 8.
2. The method according to claim 1 , wherein Ab comprises a VH domain having the amino acid sequence of SEQ ID NO:1 and a VL domain having the amino acid sequence of SEQ ID NO:2.
3. The method according to claim 1 , wherein the starting dose of CD25-ADC is reduced no more than once during the dosage regime.
4. The method according to claim 1 , wherein the starting dose is 40 to 50 μg/kg.
5. The method according to claim 3 , wherein the starting dose is about 45 μg/kg.
6. The method according to claim 1 , wherein the starting dose is 55 to 65 μg/kg.
7. The method according to claim 6 , wherein the starting dose is about 60 μg/kg.
8. The method according to claim 1 , wherein the starting dose is 75 to 85 μg/kg.
9. The method according to claim 8 , wherein the starting dose is about 80 μg/kg.
10. The method according to claim 1 , wherein the reduced dose is 25 to 35 μg/kg.
11. The method according to claim 10 , wherein the reduced dose is about 30 μg/kg.
12. The method according to claim 1 , wherein the reduced dose is 35 to 45 μg/kg.
13. The method according to claim 12 , wherein the reduced dose is about 40 μg/kg.
14. The method according to claim 1 , wherein the reduced dose is 45 to 55 μg/kg.
15. The method according to claim 14 , wherein the reduced dose is about 50 μg/kg.
16. The method according to claim 1 , wherein about 40 to 50 μg/kg of CD25-ADC are administered for two, 3-week treatment cycles, followed by subsequent 3-week cycles of 25 to 35 μg/kg beginning 3 weeks after the cycle 2 administration.
17. The method according to claim 1 , wherein about 45 μg/kg of CD25-ADC are administered for two, 3-week treatment cycles, followed by subsequent 3-week cycles of 30 μg/kg beginning 3 weeks after the cycle 2 administration.
18. The method according to claim 1 , wherein the proliferative disease is Hodgkin's lymphoma.
19. The method according to claim 1 , wherein the proliferative disease is non-Hodgkin's lymphoma of B-cell or T-cell lineage.
20. The method according to claim 1 , wherein the non-Hodgkin's lymphoma is either:
(a) a B-cell lineage lymphoma selected from diffuse large B-cell lymphoma (DLBCL), follicular lymphoma, (FL), Mantle Cell lymphoma (MCL), chronic lymphatic lymphoma (CLL), and Marginal Zone B-cell lymphoma (MZBL); or
(b) a T-cell lineage lymphoma selected from Extranodal T cell lymphoma, Cutaneous T-cell lymphomas (Sézary syndrome and Mycosis fungoides), Anaplastic large cell lymphoma, T-cell lymphoblastic lymphoma, including acute T-cell lymphoblastic lymphoma (ATLL), and Angioimmunoblastic T-cell lymphoma.
21. The method according to claim 1 , wherein the proliferative disease is resistant, relapsed, or refractory.
22. The method according to claim 1 , wherein the subject is human.
23. The method according to claim 1 , further comprising administering a chemotherapeutic agent in combination with the CD25-ADC.
24. The method according to claim 1 , wherein the CD25-ADC is administered in combination with a steroid.
25. The method according to claim 24 , wherein the steroid is dexamethasone.