The Utilization of Karyotyping, iFISH, and MLPA for the Detection of Recurrence Genetic Aberrations in Multiple Myeloma

Document Type : Research Articles


1 Department of Pathology, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.

2 Division of Hematology, Department of Medicine, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.

3 Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok, Thailand.


Multiple myeloma (MM) is a hematological malignancy characterized by abnormal accumulation of clonal plasma cells in the bone marrow. Recently, multiplex ligation-dependent probe amplification (MLPA) has emerged as an effective and robust method for detection of common genetic alterations in MM patients. Here, we aimed to confirm MLPA utility for this purpose and furthermore to test the feasibility of a combination of karyotyping, interphase fluorescence in situ hybridization (iFISH) and MLPA methods for diagnosis, prognostic assessment and risk stratification of MM. Thirty-five genomic DNA samples isolated from CD138-enriched plasma cells from bone marrow of MM patients were analyzed using the MLPA method. We found that amp (1q) was the most frequent genetic alteration (48.6%) in the tested samples, followed by del (1p) and del (13q) (34.3%). Moreover, concordant results between sensitivity and specificity of iFISH and MLPA for the detection of del (13q) (p-value >0.05) and del (17p) (p-value >0.05) were obtained. In summary, we could provide evidence of MLPA assay utility for the detection of common genetic alterations in MM. The combination of karyotyping, iFISH, and MLPA proved very helpful for clinical risk stratification.


Main Subjects

Volume 18, Issue 11
November 2017
Pages 3135-3142
  • Receive Date: 14 August 2017
  • Revise Date: 27 September 2017
  • Accept Date: 22 October 2017
  • First Publish Date: 01 November 2017