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@ARTICLE{Schinke:304239,
author = {C. Schinke and L. Rasche and C. Ashby and R. van Hemert and
S. Thanendrarajan and S. Al Hadidi and M. Zangari and C.
Bailey and D. V. Alapat and J. D. Shaughnessy and F. Zhan
and B. Barlogie and F. van Rhee and N. Weinhold$^*$},
title = {{P}rognostic impact of focal lesion location and
persistence in multiple myeloma: insights from serial
{PET}/{DWI} imaging.},
journal = {Blood advances},
volume = {9},
number = {17},
issn = {2473-9529},
address = {Washington, DC},
publisher = {American Society of Hematology},
reportid = {DKFZ-2025-01798},
pages = {4368 - 4377},
year = {2025},
note = {#LA:A360#},
abstract = {Multiple myeloma (MM) is a heterogeneous disease
exemplified by focal lesions (FLs), densely populated
nodules whose number and persistence during treatment
predict poor outcome. However, the prognostic role of FL
location and the relationship between FLs at different time
points remain underexplored, although they may provide
critical clues to disease evolution and resistance
mechanisms. We analyzed positron emission tomography (PET)
and diffusion-weighted magnetic resonance imaging (DWI)
scans from 243 patients with MM enrolled in total therapies
at baseline, after autologous stem cell transplant (ASCT),
and every 6 to 12 months thereafter until relapse or last
follow-up. Baseline FLs in the humerus or femur were
associated with poor prognosis. Although rare, residual
PET-positive FLs after ASCT identified patients with worse
outcomes. One-third of patients had residual FLs on DWI
after ASCT, which also correlated with poor prognosis. Even
FLs that resolved after the second ASCT in patients who
underwent tandem ASCTs retained adverse prognostic
significance, highlighting the limitations of late imaging
in high-risk patients. Patients who achieved both minimal
residual disease (MRD) and imaging negativity after ASCT had
the best outcomes. Conversely, MRD-negative patients with
FLs had as poor outcomes as double-positive patients.
Residual FLs persisting to relapse were predominantly
observed in early relapse cases, and resolved FLs frequently
recurred at the same or nearby sites, suggesting limited
imaging sensitivity for detection of focal resistant cells.
Taken together, this study identifies long bone FLs as a
risk factor, and underscores the value of serial imaging and
the urgent need for alternative treatment strategies for
patients with persistent FLs.},
keywords = {Humans / Multiple Myeloma: therapy / Multiple Myeloma:
diagnostic imaging / Multiple Myeloma: mortality / Multiple
Myeloma: pathology / Multiple Myeloma: diagnosis / Prognosis
/ Male / Female / Middle Aged / Positron-Emission
Tomography: methods / Diffusion Magnetic Resonance Imaging:
methods / Aged / Neoplasm, Residual / Adult},
cin = {A360},
ddc = {610},
cid = {I:(DE-He78)A360-20160331},
pnm = {311 - Zellbiologie und Tumorbiologie (POF4-311)},
pid = {G:(DE-HGF)POF4-311},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:40590883},
doi = {10.1182/bloodadvances.2025016510},
url = {https://inrepo02.dkfz.de/record/304239},
}