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Not yet recruitingNCT07839988DESCMLUpdated Sep 24, 2026

De-escalation Strategy of Tyrosine Kinase Inhibitors Before Treatment Discontinuation in Patients With Chronic Myeloid Leukemia

A Phase 4 interventional study of Halve TKIs and Withdrawal TKIs in Chronic Myeloid Leukemia in Chronic Phase, sponsored by Nanfang Hospital, Southern Medical University. Not yet recruiting at 1 site in China. Open to participants aged 18 Years to 80 Years. Per ClinicalTrials.gov, last updated 2026-09-24.

Sponsored by Nanfang Hospital, Southern Medical University · Phase 4, Interventional, and Treatment

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Phase
Phase 4
Study type
Interventional
Enrollment
280
Allocation
Randomized
Ages
18 Years to 80 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-14

Among 49 studies in Leukemia, Myelogenous, Chronic, BCR-ABL Positive with a site in China — 11 open to participants now, 14 under way, 2 of them phase 3. Leukemia, Myelogenous, Chronic, BCR-ABL Positive · China.

Planned enrollment
11th of 37
280 · median 144
Started
2026
with 3 others
Phase 4
6 of 49
3 open now
Primary completion
2030-07
later than 11 of 13 live
Registered
48th of 49
by date
Lead sponsor
4 of 49
Nanfang Hospital, Southern Medical University

Among the 49 studies in Leukemia, Myelogenous, Chronic, BCR-ABL Positive with a site in China, this one is the 11th largest by planned enrollment of the 37 interventional ones that give a count, is one of 4 that started in 2026, is one of 6 in phase 4, reaches primary completion later than 11 of the 13 other live ones, and was the 48th registered.

Leukemia, Myelogenous, Chronic, BCR-ABL Positive

894 studies on the registry are indexed under Leukemia, Myelogenous, Chronic, BCR-ABL Positive; 109 are open to participants now.

Browse Leukemia, Myelogenous, Chronic, BCR-ABL Positive studies →

Open to participants now

11 of the 49 studies in Leukemia, Myelogenous, Chronic, BCR-ABL Positive with a site in China are open now. Recruiting first, the newest first:

5 more — sign in →

All 11 open studies →

A study can be open while its sites in China have not opened yet or have stopped. Only those recruiting at a site in China →

Who these studies take

Of the 79 Leukemia, Myelogenous, Chronic, BCR-ABL Positive studies recruiting now, 48 (61%) set no upper age limit and 20 (25%) stop at 75 or younger; 20 take children under 18; 7 take healthy volunteers.

This study: 18 Years to 80 Years · all sexes · no healthy volunteers.

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02

Study summary

The goal of this clinical trial is to learn if a 1-year dose-reduction strategy with tyrosine kinase inhibitors (TKIs) - before complete discontinuation - works to improve treatment-free remission in adults with chronic-phase chronic myeloid leukaemia (CML) who have already achieved stable deep molecular response and are eligible to stop therapy. It will also learn about the safety of this gradual reduction approach.

The main questions it aims to answer are:

Does the dose-reduction strategy lead to a higher 2-year molecular relapse-free survival rate (maintaining major molecular response, BCR-ABL1 ≤0.1%) compared with immediate TKI discontinuation? What medical problems (adverse events) do participants experience during and after dose reduction, and how do they differ from those in the direct-stop group? Researchers will compare the dose-reduction group (reduced daily TKI for 12 months, then 1-year follow-up) with the direct-discontinuation group (immediate stop, 2-year follow-up) to see whether gradual reduction is superior in preserving molecular remission. In addition, they will compare the changes in T-cell subsets between the two groups to explore immune mechanisms that may influence treatment-free remission.

Participants will:

Be randomly assigned to either dose reduction or immediate discontinuation; Take reduced TKI (or no drug) daily for 1 year, followed by 1-year observation (total 24 months); Visit the clinic every 2 months for the first 6 months, then every 3 months thereafter, for physical exams, blood tests, molecular monitoring (BCR-ABL1 PCR), and ECG; Have T-cell subsets measured by flow cytometry at months 3, 6, 12, and 24; Complete quality-of-life questionnaires (EORTC QLQ-CML24) at baseline and at months 3, 6, 12, and 24; Report all adverse events; if MMR is lost, they must restart full-dose TKI and be monitored monthly until remission is regained;

Read the detailed description

Chronic myeloid leukemia (CML) patients treated with tyrosine kinase inhibitors (TKIs) have significantly prolonged survival, but long-term medication leads to adverse events, financial burden, and reduced quality of life, creating a strong desire for treatment discontinuation. Chinese CML patients are diagnosed at a younger median age (45-50 years) than Western populations, exposing them to TKIs earlier and making treatment-free remission (TFR) a particularly urgent goal. Current studies show that direct discontinuation after achieving deep molecular response yields a 2-year molecular relapse-free survival rate of approximately 50%, with some patients experiencing "withdrawal syndrome." Recent evidence suggests that TKI dose reduction may lower relapse risk and reduce adverse effects without compromising efficacy. Therefore, investigating whether a tapering strategy before discontinuation is superior to immediate cessation is of great significance for optimising CML management and improving patients' quality of life. This study aims to investigate the difference in 2-year molecular relapse-free survival between Chinese CML patients who undergo gradual TKI dose reduction and those who discontinue TKI immediately after meeting the criteria for treatment-free remission, and to evaluate whether the dose-reduction strategy is superior to immediate discontinuation in improving molecular relapse-free survival.

03

Conditions studied

  • Chronic Myeloid Leukemia in Chronic Phase

Keywords

  • CML
  • Tyrosine kinase inhibitors
  • TFR
  • De-escalation
  • Discontinuation
  • MMR
04

Who can participate

Ages eligible
18 Years to 80 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Age ≥ 18 years.
  2. Patients in chronic phase, with no history of accelerated phase (AP-CML) or blast phase (BP-CML).
  3. Treatment with a first-generation TKI for ≥5 years; treatment with a second-generation TKI for ≥3 years; for resistant patients, treatment with an effective TKI for ≥5 years.
  4. Prior evidence of detectable BCR::ABL1 transcripts. Stable deep molecular response (DMR) for >2 years (MR⁴, BCR::ABL1¹⁵ ≤0.01%), with at least 4 test results meeting the criterion and each test at least 3 months apart.
  5. Availability of reliable qPCR testing with a sensitivity of at least MR⁴·⁵ (BCR::ABL1¹⁵ ≤0.0032%), and test results available within 2 weeks.

Exclusion criteria

Exclusion Criteria:

  1. Received stem cell transplantation before study entry.
  2. Presence of diseases associated with immunodeficiency, such as syphilis, , or .
  3. Concurrent participation in other clinical studies.
  4. Having another malignant disease, unless the other primary is currently of no clinical significance or does not require active intervention.
  5. Major surgery within 4 weeks, or not recovered from a previous surgery.
  6. Pregnancy, lactation, or women planning to become pregnant.
  7. performance status (ECOG PS) ≥3.
  8. Inability to comply with protocol procedures or to attend follow-up visits on time.
  9. Known allergy or to the study drug (active pharmaceutical ingredient and/or ).
  10. Any other condition that the investigator considers makes the patient unsuitable for enrolment.
Terms in these criteria, in plain language(6)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Hepatitis C tests

Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.

After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

ECOG performance status

A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.

0
Fully active, no restrictions.
1
Limited in strenuous activity, but walking and able to do light work, such as housework or office work.
2
Walking and able to look after yourself, but unable to work; up and about more than half of waking hours.
3
Able to look after yourself only in part; in bed or a chair more than half of waking hours.
4
Unable to look after yourself at all; in bed or a chair all day.

Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

Excipients

The other ingredients in a medicine besides the active drug, such as fillers, colours or preservatives.

05

Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
280 participants (estimated)

Study arms

  • Experimental
    De-escalation group

    12-month reduced-dose TKI (e.g., imatinib 200 mg, nilotinib 300 mg, dasatinib 50 mg, flumatinib 200/400 mg, or olverembatinib 20 mg daily) followed by 1-year observation

    Drug: Halve TKIs

  • Active comparator
    Discontinuation group

    Participants discontinue all tyrosine kinase inhibitor (TKI) therapy immediately after enrollment. No study drug is administered during the 24-month follow-up period.

    Drug: Withdrawal TKIs

Interventions

  • DrugHalve TKIs

    Participants receive a reduced dose of their current tyrosine kinase inhibitor (TKI) for 12 months. Doses are halved/reduced per protocol: Flumatinib 400/200 mg QD, Imatinib 200 mg QD, Nilotinib 300 mg QD, Dasatinib 50 mg QD, or Olverembatinib 20 mg QD, based on pre-entry therapy. Followed by 12 months of observation without TKI

  • DrugWithdrawal TKIs

    Participants discontinue all tyrosine kinase inhibitor (TKI) therapy immediately after enrollment. No study drug is administered during the 24-month follow-up period. Regular molecular monitoring (BCR-ABL1 qPCR) is performed according to protocol: every 2 months for the first 6 months, and every 3 months thereafter until month 24. Upon confirmed loss of major molecular response (MMR, BCR-ABL1 \> 0.1%), TKI must be re-initiated at the original pre-enrollment dose.

06

What researchers measure

Primary outcomes

  1. 2-year molecular relapse-free survival

    Molecular relapse is defined as loss of major molecular response (MMR; BCR-ABL1 \> 0.1%) at a single time point.

    Time frame: From enrollment until molecular relapse (loss of MMR) or death from any cause, whichever came first, assessed up to 2 years.

Secondary outcomes

  1. Event-Free Survival (EFS)

    EFS is defined as the time from enrollment to the first occurrence of confirmed loss of major molecular response (MMR; BCR-ABL1 \> 0.1%), progression to advanced phase disease, or death from any cause, whichever occurs first. Participants without an event are censored at the end of follow-up.

    Time frame: From date of enrollment until the date of first documented confirmed loss of MMR (BCR-ABL1 > 0.1%), progression to advanced phase, or death from any cause, whichever came first, assessed up to 24 months.

  2. Changes in T cell subsets

    Changes in T cell subsets at 3 months, 6 months, 12 months and 24 months after enrollment.

    Time frame: Changes in T cell subsets at 3 months, 6 months, 12 months and 24 months after enrollment.

07

Study locations

1 site
08

References and documents

Publications

  • Chen Y, Xu N, Yang Y, Liu Z, Xue M, Meng L, He Q, Chen C, Zeng Q, Zhu H, Du X, Zou J, He W, Guo J, Chen S, Yuan G, Wu H, Hong M, Cheng F, Liu B, Zhang Y, Li W. Quality-of-life, mental health, and perspective on TKI dose reduction as a prelude to discontinuation in chronic phase chronic myeloid leukemia. Cancer Med. 2023 Aug;12(16):17239-17252. doi: 10.1002/cam4.6296. Epub 2023 Jul 6. PubMed 37409506 ↗
  • Saussele S, Richter J, Guilhot J, Gruber FX, Hjorth-Hansen H, Almeida A, Janssen JJWM, Mayer J, Koskenvesa P, Panayiotidis P, Olsson-Stromberg U, Martinez-Lopez J, Rousselot P, Vestergaard H, Ehrencrona H, Kairisto V, Machova Polakova K, Muller MC, Mustjoki S, Berger MG, Fabarius A, Hofmann WK, Hochhaus A, Pfirrmann M, Mahon FX; EURO-SKI investigators. Discontinuation of tyrosine kinase inhibitor therapy in chronic myeloid leukaemia (EURO-SKI): a prespecified interim analysis of a prospective, multicentre, non-randomised, trial. Lancet Oncol. 2018 Jun;19(6):747-757. doi: 10.1016/S1470-2045(18)30192-X. Epub 2018 May 4. PubMed 29735299 ↗
  • Luo J, Du X, Lou J, Wu J, Ma L, Huang J, Wang L, Tu C, Liu Z, Chen L, Tan Y, Luo D, Liang H, Yin C, Cao R, Zhou X, Liu Q, Liu X, Xu N. De-escalation or discontinuation of tyrosine kinase inhibitor in patients with chronic myeloid leukemia: A multicentral, open-label, prospective trial in China. EJHaem. 2022 Sep 19;3(4):1220-1230. doi: 10.1002/jha2.550. eCollection 2022 Nov. PubMed 36467815 ↗
  • Clark RE, Polydoros F, Apperley JF, Milojkovic D, Rothwell K, Pocock C, Byrne J, de Lavallade H, Osborne W, Robinson L, O'Brien SG, Read L, Foroni L, Copland M. De-escalation of tyrosine kinase inhibitor therapy before complete treatment discontinuation in patients with chronic myeloid leukaemia (DESTINY): a non-randomised, phase 2 trial. Lancet Haematol. 2019 Jul;6(7):e375-e383. doi: 10.1016/S2352-3026(19)30094-8. Epub 2019 Jun 12. PubMed 31201085 ↗

Individual participant data

Plan to share: No

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Start is estimated for Sep 2026; primary completion for Jul 2030, 46 months later.

How these figures are worked out, and which studies are left out of them.

Registered
Sep 9, 2026
First posted
Sep 24, 2026
StartEst.
Sep 9, 2026
Primary completionEst.
Jul 31, 2030
CompletionEst.
Dec 31, 2030
Last update
Sep 24, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Sep 24, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07839988
Responsible party
Sponsor
First posted
Sep 24, 2026
Start date
Sep 9, 2026 (estimated)
Primary completion
Jul 31, 2030 (estimated)
Completion
Dec 31, 2030 (estimated)
Last update
Sep 24, 2026

Study contacts

Na Xu
Contact
sprenaa@163.com
86-18620698390

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Sep 2026. You cannot join it, but the record below documents what was studied.

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