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ORIGINAL ARTICLE
Year : 2018  |  Volume : 5  |  Issue : 2  |  Page : 74-78

Chromosomal aberrations in multiple myeloma: A study on Indian population


1 Cytogenetics Division, Central Research Laboratory, Ramaiah Medical College and Hospitals, Bengaluru, Karnataka, India
2 Department of Applied Genetics, Ramaiah College of Arts and Science, Bengaluru, Karnataka, India
3 Department of Pathology, Ramaiah Medical College and Hospitals, Bengaluru, Karnataka, India

Correspondence Address:
Dr. Angel Beula P. Royal
Cytogenetics Division, Central Research Laboratory, Ramaiah Medical College and Hospitals, Bengaluru, Karnataka
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ami.ami_42_18

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Aims: The aim of this study was to evaluate the complexity of the chromosomal abnormalities in multiple myeloma (MM) cases and to correlate the findings with the previous reported cases. Materials and Methods: Bone marrow samples were obtained from patients with MM and sent for cytogenetic study. The patient's details were logged and the cytogenetic test was performed. The karyotypes were analyzed and interpreted as per the standard guidelines. Results: Of the compiled data of cases from 2013 to 2016, 34 patients were diagnosed with MM. About 15% were below the age of 50, maximum patients were between ages of 61 and 70 years (50%). There were 25 male and 9 female. Twenty-one cases had normal karyotypes and few cases showed structural rearrangements and numerical abnormalities. Conclusions: From the data compiled, only a total of 34 cases were positive for MM, indicating that the disease is quite rare in our population. It has been previously reported that the disease usually occurs in people over the age of 50 years, however, in this study, 5 (15%) were below the age of 50 indicating that MM can affect the age group below 50 years as well. The numerical, structural abnormalities and few clonal abnormalities observed in our study added a few more to the previously reported abnormalities. However, the interesting finding of our study was a case with a combination of clones of hypodiploidy, hyperdiploidy, hypotetraploidy, and hypertetraploidy which was in contrary to the reported literatures, which were only one type of ploidy were observed. Thus, the heterogeneity and complexity of the chromosomal abnormalities in MM and the challenge in staging the disease have been proven in our study.


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