Autoimmune Hemolytic Anemia, Autoimmune Hemolytic Anemia and Autoimmune Thrombocytopenia
Conditions
Keywords
warm autoimmune hemolytic anemia, relapsed, refractory, EVANS syndrome, anti-CD20 monoclonal antibody, bortezomib
Brief summary
Patients of relapsed and refractory warm autoimmune hemolytic anemia or EVANS syndrome aged 18 to 80 will be included in this study. The treatment regimen is a single dose anti-CD20 antibody (500mg) combined with bortezomib (1.3mg/m2 twice a week for two weeks). The treatment course would be repeated three months later.
Detailed description
Glucocorticoids are the first-line treatment of warm AIHA. The overall response is 70-90%, but 10% to 20% patients are refractory to GCs and more than 50% patients will relapse after GCs tapering or cessation. Anti-CD20 monoclonal antibody is the preferred second-line treatment for relapsed refractory wAIHA. Anti-CD20 antibody 375 mg/m2, once a week, four times, is the standard treatment regimen. Low dose anti-CD20 antibody, 100mg once a week, four times, also showed similar response rate. However, the use of four times of intravenous infusion is trouble. So the investigators intend to explore the efficiency of the singe dose of 500mg anti-CD20 antibody. Anti-CD20 antibody takes median 6-8 weeks to response and only about 50% patients achieving long-term response. Plasma cells produce antibodies and long-lived plasma cells in bone marrow and spleen continuously work. Bortezomib is a proteasome inhibitor and targets plasma cells. Bortezomib has become a first-line treatment for clonal plasma cell diseases (such as multiple myeloma, systemic amyloidosis, POEMS syndrome, etc.). Bortezomib can also induce reactive plasma cell apoptosis and has a variety of immunomodulatory effects. The investigators try to combine bortezomib with anti-CD20 antibody, which may play a synergistic role and improve the efficacy. Patients of relapsed and refractory warm autoimmune hemolytic anemia or EVANS syndrome will receive a single dose anti-CD20 antibody (500mg) and bortezomib (1.3mg/m2 twice a week for two weeks) twice for three months interval.
Interventions
DRUGcombination of a single dose anti-CD20 antibody and bortezomib
Relapsed and refractory warm AIHA patients receive treatment of combination of a single dose anti-CD20 antibody and bortezomib twice during three months interval.
Sponsors
Peking Union Medical College Hospital
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to 80 Years
Healthy volunteers
No
Inclusion criteria
1. Diagnosis of warm autoimmune hemolytic anemia or EVANS syndrome, primary or secondary. 2. Patients refractory to glucocorticoids (HGB increase less than 20g/L after three weeks full dose glucocorticoids treatment). Or patients relapse after at least one course of glucocorticoids therapy (HGB \< 110g/L in female and HGB \< 120g/L in male). Or glucocorticoids dependence (prednisone maintenance dose \> 10mg a day). Or glucocorticoids intolerance. 3. Normal heart function, liver function (total bilirubin \< 1.5×ULN, ALT, AST \< 3.0 ×ULN), and renal function (serum creatinine \< 1.0 ×ULN). 4. No active infection. 5. No malignant tumors (except carcinoma in situ). 6. Patients understand the content of the study, participate the study and sign the informed consent voluntarily.
Exclusion criteria
1. Patients with malignant tumors (excluding carcinoma in situ); 2. With uncontrollable infections or other serious diseases; 3. Active hepatitis B, serume HBV-DNA \> 104copies/ml; 4. Women during pregnancy or lactation; 5. Not strict contraception; 6. Psychiatric patients and those with severe mental illness. 7. Other conditions that researchers consider inappropriate to join the study.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| response time | two years | days hemoglobin increasing more than 20g/L |
| overall response | two years | total of complete response and partial response |
| complete response | two years | rate of achieving complete response |
| relapse rate | two years | relapse rate of responders |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| overall survival | two years | time from first treatment to death of any causes |
| side effects | two years | side effects due to the combination of anti-CD20 antibody and bortezomib |
| relapse free survival | two years | time duration of responders from first treatment to recurrence of decompensated hemolysis |
Countries
China
Outcome results
None listed