MMR on 12 Month
Conditions
Brief summary
patients with Ph+ CML-CP who have been treated with second-generation TKIs (nilotinib, dasatinib) for at least 3 years and maintains MMR for at least 2 years, continue to be treated with halved dose for 12 months, and then stop for 12 months.
Detailed description
1.Patients with Ph+ CML-CP who have been treated with second-generation TKIs (nilotinib, dasatinib) for at least 3 years and maintains MMR for at least 2 years. 2。During the TKI reduction phase, the peripheral blood BCR/ABLIS was detected by Q-PCR every two months and continuously monitored for 12 months. In the TFR period, the peripheral blood BCR/ABLIS was detected once a month for the first 6 months; the peripheral blood BCR/ABLIS was detected once every two months for the next 6 months; after that, the peripheral blood BCR/ABLIS was detected once every three months. 3.If the patients detected molecular recurrence (loss of MMR, BCR/ABL IS\>0.1%),the original dose of 2G-TKI should be administered
Interventions
DRUGTKI
halve dose of 2G-TKI for 12 months and then withdrawal for 12 months
Sponsors
xuna
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
1. Male or female over 18 years 2. Patients diagnosed as Ph+ (or Ph- but PCR-positive for BCR-ABL) CML-CP 3. Patients have received one of the second-generation TKIs (nilotinib, dasatinib) for at least 3 years 4. Patients have maintained MMR (BCR/ABL IS\<0.1% or more) at least 2 years 5. in the past 24 months, at least three times recent molecular reactions have confirmed MMR 6. Patients have signed the informed consent
Exclusion criteria
1. patients with the presence or history of T315I mutation 2. patients with the presence of rare unquantifiable atypical transcripts 3. Patients with comorbid cardiovascular disease or a history of severe cardiovascular disease 4. patients have history of accelerated or blast phase, or suspected blast disease 5. patients have received allogeneic hematopoietic stem cell transplantation 6. patients have severe abnormal liver and kidney function (ALT \> upper limit of normal, AST \> 3 times normal upper line, glomerular filtration rate \< 50%) 7. patients combined with other tumors or a history of other malignancies ECOG score\>3 8. Two-line abnormality in the patient's blood routine examination 9. women is pregnant or nursing
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| MMR(BCR/ABL IS<0.1%) on 24 months | 24 months | Continue to treat patients at half-dose for 12 months, then stop for 12 months |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| MRFS | 24 months | Molecular relapse free survival in 24 months |
Countries
China
Contacts
Primary Contactxu na
Outcome results
None listed