Abstract:
:Major molecular remission (MMR) is an important therapy goal in chronic myeloid leukemia (CML). So far, MMR is not a failure criterion according to ELN management recommendation leading to uncertainties when to change therapy in CML patients not reaching MMR after 12 months. At monthly landmarks, for different molecular remission status Hazard ratios (HR) were estimated for patients registered to CML study IV who were divided in a learning and a validation sample. The minimum HR for MMR was found at 2.5 years with 0.28 (compared to patients without remission). In the validation sample, a significant advantage for progression-free survival (PFS) for patients in MMR could be detected (p-value 0.007). The optimal time to predict PFS in patients with MMR could be validated in an independent sample at 2.5 years. With our model we provide a suggestion when to define lack of MMR as therapy failure and thus treatment change should be considered. The optimal response time for 1% BCR-ABL at about 12-15 months was confirmed and for deep molecular remission no specific time point was detected. Nevertheless, it was demonstrated that the earlier the MMR is achieved the higher is the chance to attain deep molecular response later.
journal_name
Leukemiajournal_title
Leukemiaauthors
Saussele S,Hehlmann R,Fabarius A,Jeromin S,Proetel U,Rinaldetti S,Kohlbrenner K,Einsele H,Falge C,Kanz L,Neubauer A,Kneba M,Stegelmann F,Pfreundschuh M,Waller CF,Oppliger Leibundgut E,Heim D,Krause SW,Hofmann WK,Hasdoi
10.1038/s41375-018-0055-7subject
Has Abstractpub_date
2018-05-01 00:00:00pages
1222-1228issue
5eissn
0887-6924issn
1476-5551pii
10.1038/s41375-018-0055-7journal_volume
32pub_type
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