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Nalin A, Zhao Q, Voorhees T, Bond D, Sawalha Y, Hanel W, Sigmund A, Annunzio K, Alinari L, Baiocchi R, Maddocks K, Jones D, Christian B, Epperla N. Impact of circulating lymphoma cells at diagnosis on outcomes in patients with Waldenstrom macroglobulinemia. Front Oncol 2023; 13:1264387. [PMID: 37781209 PMCID: PMC10533994 DOI: 10.3389/fonc.2023.1264387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 08/30/2023] [Indexed: 10/03/2023] Open
Abstract
Given the paucity of data surrounding the prognostic relevance of circulating lymphoma (CL) in Waldenström macroglobulinemia (WM), we sought to evaluate the impact of CL at diagnosis on outcomes in patients with WM. Patients were divided into CL+ and CL- based on the results of flow cytometry. The endpoints included assessing progression-free survival (PFS), overall survival (OS), and diagnosis-to-treatment interval (DTI) between the two groups. Among the 308 patients with WM, 69 met the eligibility criteria with 42 and 27 in CL+ and CL- groups, respectively. The two groups were well balanced in regard to all the baseline characteristics. The ORR was numerically higher in the CL+ group compared to the CL-group (81% versus 61%, respectively), however, the CR+VGPR rates were similar between the two groups. The median PFS was not significantly different between the two groups (6.3 years in the CL- group versus not reached [NR] in the CL+ group) regardless of the first-line therapy. There was no significant difference in median OS between the CL- and CL+ groups (13 years versus NR). Although the median DTI was shorter in the CL+ group compared to CL- group, the significance was lost in the multivariable analysis. In this study (largest-to-date) evaluating the impact of CL on outcomes in patients with newly diagnosed WM, we did not find the prognostic utility of CL in WM. Future studies should explore the correlation of CL with other biological factors that impact the outcomes in WM patients.
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Affiliation(s)
- Ansel Nalin
- Department of Medicine, The Ohio State University, Columbus, OH, United States
| | - Qiuhong Zhao
- Division of Hematology, The James Cancer Hospital and Solove Research Institute, The Ohio State University, Columbus, OH, United States
| | - Timothy Voorhees
- Division of Hematology, The James Cancer Hospital and Solove Research Institute, The Ohio State University, Columbus, OH, United States
| | - David Bond
- Division of Hematology, The James Cancer Hospital and Solove Research Institute, The Ohio State University, Columbus, OH, United States
| | - Yazeed Sawalha
- Division of Hematology, The James Cancer Hospital and Solove Research Institute, The Ohio State University, Columbus, OH, United States
| | - Walter Hanel
- Division of Hematology, The James Cancer Hospital and Solove Research Institute, The Ohio State University, Columbus, OH, United States
| | - Audrey Sigmund
- Division of Hematology, The James Cancer Hospital and Solove Research Institute, The Ohio State University, Columbus, OH, United States
| | - Kaitlin Annunzio
- Division of Hematology, The James Cancer Hospital and Solove Research Institute, The Ohio State University, Columbus, OH, United States
| | - Lapo Alinari
- Division of Hematology, The James Cancer Hospital and Solove Research Institute, The Ohio State University, Columbus, OH, United States
| | - Robert Baiocchi
- Division of Hematology, The James Cancer Hospital and Solove Research Institute, The Ohio State University, Columbus, OH, United States
| | - Kami Maddocks
- Division of Hematology, The James Cancer Hospital and Solove Research Institute, The Ohio State University, Columbus, OH, United States
| | - Dan Jones
- Department of Pathology, The Ohio State University, Columbus, OH, United States
| | - Beth Christian
- Division of Hematology, The James Cancer Hospital and Solove Research Institute, The Ohio State University, Columbus, OH, United States
| | - Narendranath Epperla
- Division of Hematology, The James Cancer Hospital and Solove Research Institute, The Ohio State University, Columbus, OH, United States
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New Concept and Apparatus for Cytocentrifugation and Cell Processing for Microscopy Analysis. Int J Mol Sci 2021; 22:ijms22137098. [PMID: 34281153 PMCID: PMC8268716 DOI: 10.3390/ijms22137098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 06/21/2021] [Accepted: 06/27/2021] [Indexed: 01/21/2023] Open
Abstract
Cytocentrifugation is a common technique for the capture of cells on microscopic slides. It usually requires a special cytocentrifuge or cytorotor and cassettes. In the study presented here, we tested the new concept of cytocentrifugation based on the threaded connection of the lid and the sample holder to ensure an adjustable flow of solutions through the filters and the collection of the filtered solutions in the reservoir during centrifugation. To test this concept, we developed a device for the preparation of cell samples on circular coverslips. The device was tested for the capture and sample processing of both eukaryotic and prokaryotic cells, cell nuclei, and mitochondria for microscopy analysis including image cytometry. Moreover, an efficient procedure was developed for capturing formaldehyde-fixed cells on non-treated coverslips without cell drying. The results showed that the tested arrangement enables the effective capture and processing of all of the tested samples and the developed device represents an inexpensive alternative to common cytocentrifuges, as only the paper filter is consumed during sample processing, and no special centrifuge, cytorotor, or cassette is necessary. As no additional system of solution removal is required during sample staining, the tested concept also facilitates the eventual automation of the staining procedure.
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