New Blood Testโ Shows Promiseโฃ for Monitoringโข Multiple Myeloma
A new technique called โSWIFT-seqโข offers a potentially less invasive way to monitor patients with multiple myeloma (MM) and its precursor conditions, โaccording to โคresearch published August 8, 2025, in Nature Cancer. Currently, monitoring ofen relies on bone marrow (BM) biopsies, a more invasive procedure.SWIFT-seq analyzes circulatingโ tumor cells (CTCs) found in a simple blood test.
Researchers at Dana-Farber Cancer Institute developed SWIFT-seq, which not only quantifiesโฃ CTCs but also provides a โขmore detailed analysis than customaryโ methods like FISH โฃ(fluorescence in situ hybridization). According to researchers, SWIFT-seq can measureโข CTC numbers, characterize genomic alterations within theโ tumor, estimate the tumor’s proliferative capacity, and identify prognosticallyโ relevant gene signatures – allโ from a single blood sample.
“SWIFT-seq is โa powerful option as it can measureโ the โnumber of CTCs, characterize the genomic alterationsโค of the tumor,โ estimate the tumor’s proliferative capacity, and โขmeasure prognostically useful geneโ signatures in a single testโ and from a blood sample,” said Dr. Ghobrial in a press release.2
The study involved 101 patients โandโ healthy donors. The researchers successfully captured CTCs in 90% of individuals with โฃmonoclonal gammopathy of undetermined significance (MGUS), smoldering multiple myelomaโค (SMM), and MM. Specifically, CTCsโข were identified in 95% of SMM patients and 94% ofโค thoseโค with newly โฃdiagnosed MM.1 the team believes these patient groups are โmost likelyโ to benefit from improved risk assessment and ongoing genomicโ monitoring.
“We identified a gene signature that weโข believe captures theโฃ tumor’s circulatory capacity and may partly explain some of the โunexplained mysteries of myeloma biology,” โฃexplained Dr. Elizabeth D. Lightbody, co-first author of the study.2 “This can have a tremendous impact in how we think about curtailing โtumor spread in patients with myeloma and could โlead to the developmentโข of new drugs for โคpatients.”
Currently, obtaining the same level of characterization โขas โคSWIFT-seq requires four separate assays, โthree of which necessitate a BM biopsy, the investigators โขnoted.1 They suggest SWIFT-seq couldโ be a “pivotal” advancement inโ blood-based tumor profiling for MM patients.
“It would be amazing if we โคhad a blood-based test that โคcan outperform โFISH and thatโ works in theโ majority of patients-we think SWIFT-seqโ may just be that test,” stated Dr. Romanos Sklavenitis-Pistofidis, โco-firstโ author.2
References
- Lightbody ED, Sklavenitis-Pistofidis R, Wu T, et al.โ SWIFT-seq enables complete single-cell transcriptomic profilingโฃ of circulating tumor cellsโฃ in multiple myelomaโ and its โprecursors. Nat Cancer. Published online August 8, 2025. doi:10.1038/s43018-025-01006-0
- Dana-Farber Cancer โInstitute unveils groundbreaking blood test for multiple myeloma. News release. Dana-Farber Cancer Institute. August 8,โ 2025. Accessed August 22, 2025.
- Bertamini L, Oliva โS, Rota-Scalabrini D, etโค al. Highโข Levels of Circulating Tumor Plasma Cells asโฃ aโฃ Key Hallmark of aggressive โDisease โin Transplant-Eligible Patients With Newly Diagnosed Multiple Myeloma.J Clin Oncol. 2022;40(27):3120-3131. doi:10.1200/JCO.21.01393