Tags

Type your tag names separated by a space and hit enter

An approach for diagnosing plasma cell myeloma by three-color flow cytometry based on kappa/lambda ratios of CD38-gated CD138(+) cells.
Diagn Pathol. 2012 Sep 28; 7:131.DP

Abstract

BACKGROUND

World Health Organization (WHO) criteria are commonly used to diagnose plasma cell myeloma (PCM); however, these criteria are complex and require several laboratory parameters. For differentiating reactive plasmacytosis from clonal plasma cell (PC) neoplasms such as PCM, it is important to accurately determine the expression of cytoplasmic immunoglobulin light chains.

METHODS

We retrospectively analyzed the records of 27 selected patients with PCM who underwent bone biopsies for confirmative diagnosis according to WHO criteria. Twenty-three controls were also investigated. In the present study, all the samples were analyzed using flow cytometry (FC) in the side scatter vs. CD38 histogram mode, and the CD38-gated PC population was identified. Bivariate histograms of CD138/kappa and CD138/lambda were assessed, and the ratios of dual-positive cells to the CD138(+) PC population were calculated. The kappa/lambda ratio was defined as the ratio of CD138/kappa to CD138/lambda.

RESULTS

PCM cells were distinguished from normal PCs using cutoff levels between 0.76 and 1.5, at a sensitivity of 96.3% and specificity of 95.7%.

CONCLUSIONS

Three-color FC analysis is simple to perform and inexpensive, with clinically relevant data obtained soon after the completion of FC measurements. The detection of the cytoplasmic kappa/lambda ratio of CD38-gated CD138(+) PCs may be a useful tool in the diagnosis of PCM. To the best of our knowledge, this report represents the first diagnostic assessment of the cytoplasmic kappa/lambda ratio in CD38-gated CD138+ PCs using FC analysis. This method may help in more simple, efficient, rapid, and accurate diagnosis of PCM.

VIRTUAL SLIDES

The virtual slide(s) for this article can be found here: http://www.diagnosticpathology.diagnomx.eu/vs/1568085959771735.

Authors+Show Affiliations

First Department of Internal Medicine (I), Osaka Medical College, 2-7 Daigakumachi, Takatsuki City, Osaka, 569-0801, Japan. in1304@poh.osaka-med.ac.jpNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

23021410

Citation

Nakayama, Shoko, et al. "An Approach for Diagnosing Plasma Cell Myeloma By Three-color Flow Cytometry Based On Kappa/lambda Ratios of CD38-gated CD138(+) Cells." Diagnostic Pathology, vol. 7, 2012, p. 131.
Nakayama S, Yokote T, Hirata Y, et al. An approach for diagnosing plasma cell myeloma by three-color flow cytometry based on kappa/lambda ratios of CD38-gated CD138(+) cells. Diagn Pathol. 2012;7:131.
Nakayama, S., Yokote, T., Hirata, Y., Iwaki, K., Akioka, T., Miyoshi, T., Takayama, A., Nishiwaki, U., Masuda, Y., Ikemoto, T., Tanaka, H., Nishimura, Y., Tsuji, M., & Hanafusa, T. (2012). An approach for diagnosing plasma cell myeloma by three-color flow cytometry based on kappa/lambda ratios of CD38-gated CD138(+) cells. Diagnostic Pathology, 7, 131. https://doi.org/10.1186/1746-1596-7-131
Nakayama S, et al. An Approach for Diagnosing Plasma Cell Myeloma By Three-color Flow Cytometry Based On Kappa/lambda Ratios of CD38-gated CD138(+) Cells. Diagn Pathol. 2012 Sep 28;7:131. PubMed PMID: 23021410.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - An approach for diagnosing plasma cell myeloma by three-color flow cytometry based on kappa/lambda ratios of CD38-gated CD138(+) cells. AU - Nakayama,Shoko, AU - Yokote,Taiji, AU - Hirata,Yuji, AU - Iwaki,Kazuki, AU - Akioka,Toshikazu, AU - Miyoshi,Takuji, AU - Takayama,Ayami, AU - Nishiwaki,Uta, AU - Masuda,Yuki, AU - Ikemoto,Toshiyuki, AU - Tanaka,Hidema, AU - Nishimura,Yasuichiro, AU - Tsuji,Motomu, AU - Hanafusa,Toshiaki, Y1 - 2012/09/28/ PY - 2012/07/26/received PY - 2012/09/24/accepted PY - 2012/10/2/entrez PY - 2012/10/2/pubmed PY - 2013/5/11/medline SP - 131 EP - 131 JF - Diagnostic pathology JO - Diagn Pathol VL - 7 N2 - BACKGROUND: World Health Organization (WHO) criteria are commonly used to diagnose plasma cell myeloma (PCM); however, these criteria are complex and require several laboratory parameters. For differentiating reactive plasmacytosis from clonal plasma cell (PC) neoplasms such as PCM, it is important to accurately determine the expression of cytoplasmic immunoglobulin light chains. METHODS: We retrospectively analyzed the records of 27 selected patients with PCM who underwent bone biopsies for confirmative diagnosis according to WHO criteria. Twenty-three controls were also investigated. In the present study, all the samples were analyzed using flow cytometry (FC) in the side scatter vs. CD38 histogram mode, and the CD38-gated PC population was identified. Bivariate histograms of CD138/kappa and CD138/lambda were assessed, and the ratios of dual-positive cells to the CD138(+) PC population were calculated. The kappa/lambda ratio was defined as the ratio of CD138/kappa to CD138/lambda. RESULTS: PCM cells were distinguished from normal PCs using cutoff levels between 0.76 and 1.5, at a sensitivity of 96.3% and specificity of 95.7%. CONCLUSIONS: Three-color FC analysis is simple to perform and inexpensive, with clinically relevant data obtained soon after the completion of FC measurements. The detection of the cytoplasmic kappa/lambda ratio of CD38-gated CD138(+) PCs may be a useful tool in the diagnosis of PCM. To the best of our knowledge, this report represents the first diagnostic assessment of the cytoplasmic kappa/lambda ratio in CD38-gated CD138+ PCs using FC analysis. This method may help in more simple, efficient, rapid, and accurate diagnosis of PCM. VIRTUAL SLIDES: The virtual slide(s) for this article can be found here: http://www.diagnosticpathology.diagnomx.eu/vs/1568085959771735. SN - 1746-1596 UR - https://www.unboundmedicine.com/medline/citation/23021410/An_approach_for_diagnosing_plasma_cell_myeloma_by_three_color_flow_cytometry_based_on_kappa/lambda_ratios_of_CD38_gated_CD138_+__cells_ L2 - https://diagnosticpathology.biomedcentral.com/articles/10.1186/1746-1596-7-131 DB - PRIME DP - Unbound Medicine ER -