Adaptation of a multiple myeloma minimal residual disease multicolor flow cytometry assay for real-world practice
© 2022 International Clinical Cytometry Society..
BACKGROUND: Achieving minimal residual disease (MRD) negativity following treatment for multiple myeloma (MM) is associated with improved progression free and overall survival. In the UK, MRD assessments in MM are not incorporated into routine clinical use outside trials. Widely used in other haematological malignancies, there is a role for widening the availability of myeloma MRD assays to laboratories outside larger treating centers.
METHODS: We set up and assessed concordance of a multicolor flow cytometry (MCF) assay for MM MRD in collaboration with a reference center including validity following delayed processing of samples using an optimized fixation step. We then conducted a real-world snapshot of MRD results in a cohort of newly diagnosed transplant-eligible patients treated with UK standard induction therapies at the time of analysis.
RESULTS: 43 MCF MRD samples run in parallel with a reference center showed high correlation and minimal bias. 24 samples were split and processed in duplicate both fixed and fresh, with strong correlation, minimal bias, and no change in plasma cell phenotype by flow markers confirming a 6-day delay in processing did not affect assay performance. A real-world snapshot found 17% (10/58) of patients were MRD-negative post-bortezomib-based triplet induction therapy.
CONCLUSIONS: We successfully adopted a reference MCF MM MRD method which was stable for up to 6 days following sample collection potentially allowing broader access of this assay to smaller laboratories which would facilitate further investigation of the prognostic value and clinical utility of MRD assessments outside the trial setting in real-world practice.
| Medienart: |
E-Artikel |
|---|
| Erscheinungsjahr: |
2023 |
|---|---|
| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:104 |
|---|---|
| Enthalten in: |
Cytometry. Part B, Clinical cytometry - 104(2023), 4 vom: 03. Juli, Seite 304-310 |
| Sprache: |
Englisch |
|---|
| Beteiligte Personen: |
McMillan, Annabel [VerfasserIn] |
|---|
| Links: |
|---|
| Themen: |
69G8BD63PP |
|---|
| Anmerkungen: |
Date Completed 21.08.2023 Date Revised 22.08.2023 published: Print-Electronic Citation Status MEDLINE |
|---|
| doi: |
10.1002/cyto.b.22100 |
|---|
| funding: |
|
|---|---|
| Förderinstitution / Projekttitel: |
|
| PPN (Katalog-ID): |
NLM348836732 |
|---|
| LEADER | 01000naa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLM348836732 | ||
| 003 | DE-627 | ||
| 005 | 20231226041218.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 231226s2023 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1002/cyto.b.22100 |2 doi | |
| 028 | 5 | 2 | |a pubmed24n1162.xml |
| 035 | |a (DE-627)NLM348836732 | ||
| 035 | |a (NLM)36370149 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 100 | 1 | |a McMillan, Annabel |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Adaptation of a multiple myeloma minimal residual disease multicolor flow cytometry assay for real-world practice |
| 264 | 1 | |c 2023 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ƒaComputermedien |b c |2 rdamedia | ||
| 338 | |a ƒa Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Date Completed 21.08.2023 | ||
| 500 | |a Date Revised 22.08.2023 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a © 2022 International Clinical Cytometry Society. | ||
| 520 | |a BACKGROUND: Achieving minimal residual disease (MRD) negativity following treatment for multiple myeloma (MM) is associated with improved progression free and overall survival. In the UK, MRD assessments in MM are not incorporated into routine clinical use outside trials. Widely used in other haematological malignancies, there is a role for widening the availability of myeloma MRD assays to laboratories outside larger treating centers | ||
| 520 | |a METHODS: We set up and assessed concordance of a multicolor flow cytometry (MCF) assay for MM MRD in collaboration with a reference center including validity following delayed processing of samples using an optimized fixation step. We then conducted a real-world snapshot of MRD results in a cohort of newly diagnosed transplant-eligible patients treated with UK standard induction therapies at the time of analysis | ||
| 520 | |a RESULTS: 43 MCF MRD samples run in parallel with a reference center showed high correlation and minimal bias. 24 samples were split and processed in duplicate both fixed and fresh, with strong correlation, minimal bias, and no change in plasma cell phenotype by flow markers confirming a 6-day delay in processing did not affect assay performance. A real-world snapshot found 17% (10/58) of patients were MRD-negative post-bortezomib-based triplet induction therapy | ||
| 520 | |a CONCLUSIONS: We successfully adopted a reference MCF MM MRD method which was stable for up to 6 days following sample collection potentially allowing broader access of this assay to smaller laboratories which would facilitate further investigation of the prognostic value and clinical utility of MRD assessments outside the trial setting in real-world practice | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a minimal residual disease | |
| 650 | 4 | |a multicolor flow cytometry | |
| 650 | 4 | |a multiple myeloma | |
| 650 | 7 | |a Bortezomib |2 NLM | |
| 650 | 7 | |a 69G8BD63PP |2 NLM | |
| 700 | 1 | |a Tran, Thien-An |e verfasserin |4 aut | |
| 700 | 1 | |a Galas-Filipowicz, Daria |e verfasserin |4 aut | |
| 700 | 1 | |a Camilleri, Marquita |e verfasserin |4 aut | |
| 700 | 1 | |a Lecat, Catherine |e verfasserin |4 aut | |
| 700 | 1 | |a Ainley, Louise |e verfasserin |4 aut | |
| 700 | 1 | |a Guo, Yanping |e verfasserin |4 aut | |
| 700 | 1 | |a Yong, Kwee |e verfasserin |4 aut | |
| 700 | 1 | |a Sive, Jonathan |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Cytometry. Part B, Clinical cytometry |d 2003 |g 104(2023), 4 vom: 03. Juli, Seite 304-310 |w (DE-627)NLM122834577 |x 1552-4957 |7 nnns |
| 773 | 1 | 8 | |g volume:104 |g year:2023 |g number:4 |g day:03 |g month:07 |g pages:304-310 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1002/cyto.b.22100 |3 Volltext |
| 912 | |a GBV_USEFLAG_A | ||
| 912 | |a GBV_NLM | ||
| 951 | |a AR | ||
| 952 | |d 104 |j 2023 |e 4 |b 03 |c 07 |h 304-310 | ||