Journals / Türk Klinik Biyokimya Dergisi / 2020 / Cilt: 18 - Sayı: 3

Evaluation of κ and λ light chain expressions by flow cytometry analysis in cases of CLL

KLL vakalarında akım sitometri analizi ile κ ve λ hafif zincir ekspresyonlarının değerlendirilmesi

Pages
150–156
Publication Date
2022-11-06
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Conclusion: In our patients, lambda light chain restriction was observed most frequently in CLL cells.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Objective: Confirmation of the clonality of B lymphocytes by flow cytometry analysis has an important role in the diagnosis of Chronic Lymphocytic Leukemia (CLL).
📊
Key Findings & Data:Material and Methods: Flow cytometry results of 33 CLL patients (12 women / 21 men) were examined retrospectively.
💡
Conclusion & Impact:Conclusion: In our patients, lambda light chain restriction was observed most frequently in CLL cells.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Objective: Confirmation of the clonality of B lymphocytes by flow cytometry analysis has an important role in the diagnosis of Chronic Lymphocytic Leukemia (CLL). In this retrospective study, we investigated which surface light chain pattern they showed as indicative of the monoclonity of CLL cells. Material and Methods: Flow cytometry results of 33 CLL patients (12 women / 21 men) were examined retrospectively. The reading results of the samples obtained after the application of the antibodies in the CLL immunophenotyping panel and the lysing procedure were evaluated. Cells that co-express CD19 and CD5 were considered CLL cells, and kappa and lambda light chain expressions were evaluated to the monoclonity of these cells. Results: When all cases were evaluated, the percentage of cases showing kappa monoclonity was 30.3%, while the percentage of cases showing lambda monoclonity was 51.5%. It was observed that both light chain expressions were absent in 18.2% of cases. Conclusion: In our patients, lambda light chain restriction was observed most frequently in CLL cells.

Özet

Amaç: B lenfositlerinin klonalitesinin akım sitometri analizi ile doğrulanması Kronik Lenfositik Lösemi(KLL) tanısında önemli bir yere sahiptir. Bu retrospektif çalışmada KLL hücrelerinin monoklonalitesiningöstergesi olarak hangi yüzey hafif zincir paterni gösterdikleri araştırıldı.Gereç ve Yöntem: 33 KLL hastasının (12 kadın/ 21 erkek) periferik venöz kanına ait akım sitometrisonuçları geriye dönük incelenmiştir. KLL immunfenotipleme panelinde yer alan antikorlarınuygulanması ve lysing prosedüründen sonra elde edilen örneklerin okuma sonuçları değerlendirildi.CD19 ve CD5’i birlikte eksprese eden hücreler KLL hücreleri, olarak kabul edildi ve bu hücrelerinmonoklonalitesini değerlendirmek için kappa ve lambda hafif zincir ekspresyonları değerlendirildi.Bulgular: Tüm vakalar değerlendirildiğinde kappa monoklonalitesi gösteren vaka yüzdesi %30.3 ikenlambda monoklonalitesi gösteren vaka yüzdesi %51.5 olduğu görüldü. %18.2 vakada da her iki hafifzincir ekspresyonunun da olmadığı görüldü.Sonuç: Çalışmaya alınan hastalarımızda KLL hücrelerinde en sık lambda hafif zincir restriksiyonugözlenmiştir.

🔖

Cite This Article

Köken, T., Yavaşoğlu, F., Özdemir, Ç. (2022). Evaluation of κ and λ light chain expressions by flow cytometry analysis in cases of CLL. Türk Klinik Biyokimya Dergisi, Cilt: 18 - Sayı: 3, 150–156. https://ajindex.com/articles/634342

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (12)

  1. Wierda WG, Byrd JC, Abramson JS, Bilgrami SF, Bociek G, Brander D. Et al. Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma, Version 4.2020, NCCN Clinical Practice Guidelines in Oncology. JNCCN 2020;18(2):185–217
  2. Hallek M, Cheson BD, Catovsky D, Caligaris-Cappio F, Dighiero G, Döhner H et al. Guidelines for the diagnosis and treatment of chronic lymphocytic leukemia: a report from the International Workshop on Chronic Lymphocytic Leukemia updating the National Cancer Institute-Working Group 1996 guidelines. Blood 2008;111(12):5446-56
  3. Eichhorst B, Robak T, Montserrat E, Ghia P, Hillmen P, Hallek M, et al. Chronic lymphocytic leukaemia: ESMO Clinical Practice Guidelines for diagnosis, treatment and follow-up. Ann Oncol 2015;26(Suppl 5):v78-84
  4. Leers MP, Theunissen PH, Ramaekers FC, Schutte B, Nap M. Clonality assessment of lymphoproliferative disorders by multiparameter flow cytometry of paraffin-embedded tissue: an additional diagnostic tool in surgical pathology. Hum Pathol 2000; 31(4): 422-7
  5. Levy R, Warnke R, Dorfman RF, Haimovich J. The Monoclonality of Human B cell Lymphomas. Journal of Experimental Medicine 1977;145:1014
  6. Marti GE, Rawstron AC, Ghia P, et al. Diagnostic criteria for monoclonal B-cell lymphocytosis. Br J Haematol. 2005;130(3):325-332
  7. Hsi ED, Hoeltge G, Tubbs RR. Biclonal Chronic Lymphocytic Leukemia. Am J Clin Pathol 2000; 113:798-804
  8. Ghodke KA, Patkar NV, Subramanian PG, Gujral S, Kadam PA, Tembhare PR. Biclonal chronic lymphocytic leukemia: A study of two cases and review of literatüre. Indian J Pathol Microbiol. 2017;60(1): 84-6
  9. Dongsheng Xu. Dual Surface Immunoglobulin Light-Chain Expression in B-Cell Lymphoproliferative Disorders. Arch Pathol Lab Med 2006;130:853-856
  10. Alves G. VA, Silva L. KF, Albuquerque D. GB, Nascimento FF, Freitas RV, Silva D. GKC, Barbosa M.R, Cavalcanti G. B. Use of Flow Cytometry to Evaluate the Immunophenotypic Profile of Patients with Chronic Lymphocytic Leukemia from Rio Grande Do Norte State, Brazil. Blood 2017;130 (Sppl 1): 5325
  11. Paiva A.S, Jardim A.S, Soares V.L, Paiva HD. OP, Bahia FT, Sales V. SF et al. Diagnostic Value of Kappa/Lambda Ratios Determined By Flow Cytometric Analysis of Peripheral Blood and Bone Marrow Specimens in B-Cell Chronic Proliferative Disease. Blood 2018;132(Sppl 1): 5431
  12. Abdel-Ghafar AA, El Din El Telbany MA, Mahmoud HM, El-Sakhawy YN. Immunophenotyping of chronic B-cell neoplasms: flow cytometry versus immunohistochemistry.